Friday, January 31, 2020
Human Resource Management Essay Example for Free
Human Resource Management Essay 1)Given Bandag Autoââ¬â¢s size, and anything else you know about it, explain why and how the human resource management function should be reorganized. Because of the lack of any kind of plan or strategy for the company, having a functioning human resource management in place is vital. First of all management formulates a strategic plan. The strategic plan implies certain workforce requirements. Given these workforce requirements, human resource management formulates HR strategies to produce the desired workforce skills, competencies, and behaviors. Finally the human resource manager identifies the measure he or she can use to gauge the extent to which itââ¬â¢s new policies and practices are actually producing the required employee skills and behavior. There should be a strategy map in place which shows the big picture of how each departmentââ¬â¢s performance contributes to the companyââ¬â¢s overall strategic goals. The HR score card is used by many employers to quantify and computerize the maps activities. The score card refers to a process for assigning financial and nonfinancial goals or metries to the human resource management-related chain of activities required for achieving the companyââ¬â¢s strategic aims and for monitoring results. The computerized scorecard process helps to quantify the relationships between the HR activities, the resulting employee behaviors and the resulting firm-wide strategic outcomes and performance. All of this presents the manager with a digital dash board which are computerized graphs and charts of where the company stands on all the metries from the HR scorecard. 2)Recommend what Bandag should change and/or improve upon regarding the current HR systems, forms, and practices the company now uses. They should put their HR system under one management source in order to acheire a desired workforce. This would be achieved by having (a) set policies and practices Human resources policies are vital to any organization because they provide structure for the human resources department and guidelines for employment activities. Without human resources policies, it would be extremely difficult to justify employment or business decisions. Human resources leadership is initially responsible for creating the policies. Human resources practices are the method used to conduct any type of employment action. The human resources department develops the introduction to the set of policies and guidelines and explains the importance of the policies. Policies about performance appraisals, fair employment practices, appearance and behavior are just a few of the several policies contained in an employee handbook.The handbook is distributed to new employees on the first day of work and is typically discussed during informal or formal orientation sessions. Employers expect employees to fully understand the policies; a signed form to acknowledge the employee has received and understands the employment policies is contained in the employees personnel file. Without the support of its executive leadership team to which the human resources director should belong the human resources policies will either fail or the workforce will be resentful of the human resources department as a whole. Without policies, an employee has no way of knowing whats expected of her. Without policies, whenever a manager needs to correct the employees behavior or performance, neither the manager nor the employee have any guidelines to follow. This makes it extremely difficult to conduct any type of manager-employee discussion. In short, the lack of human resources policies weakens the employer-employee relationship which can prevent your business from being successful.(b) recruiting and screening Recruitment refers to the process of attracting, screening, and selecting qualified people for a job. For some components of the recruitment process, mid- and large-size organizations often retain professional recruiters or outsource some of the process to recruitment agencies. The recruitment industry has four main types of agencies: employment agencies, recruitment websites and job search engines, headhunters for executive and professional recruitment, and niche agencies which specialize in a particular area of staffing. Some organizations use employer branding strategy and in-house recruitment instead of agencies. Recruitment-related functions are generally carried out by an organizations human resources staff.The stages in recruitment include sourcing candidates by advertising or other methods, screening potential candidates using tests and/or interviews, selecting candidates based the the results of the tests and/or interviews, and on-boarding to ensure the candidate is able to fulfill their new role effectively.. One meaning of screening is the investigation of a great number of something (for instance, people) looking for those with a particular problem or feature. ( c) benefit plans and payroll,There were three plan features I thought were going to become increasingly more prevalent in the future: individually managed accounts, distribution planning help, and greater integration of payroll and 401(k) administration. and (d) application forms and performance evaluation forms. This would eliminate all the different channels that everything goes through and make it much simpler and easir to keep a handle on .Because every =thing would one consistent source. 3)Jim fired an employee for creating what the manager called a poisonous relationship. Explain whether or not the employee has a legitimate claim against the company and the actions the company should take. The employee could have a legitimate claim because on his performance appraisal it was said that he did the technical aspects of his job well. Even though it was said he had serious problems interacting with his coworkers his boss admitted hearing rumors that he might have some mental issues. So under the new ADA laws he could possibly have a claim against the company due to mental disability. The actions the company should take from my view would be to have in place a working HR system to be able to handle this type of situation. Then there would be no guess work into how to proceed. My thoughts are that they may well have to take this employee back and attempt to make reasonable accommodations for him if possible in accordance with the new ADA guidelines or risk possibly being sued. 4) Miriam, the controller, is basically claiming that the company is retaliating against her for being pregnant, and that the fact that the company raised performance issues was just a smokescreen. Explain whether or not the EEOC and/or courts would agree with her and the actions the company should take now. I think that EEOC and \or courts might agree with her because the company had no problems with her for the 6 years previously. The issues the company rasied especially in regard to her monthly budgets being late and possibly being forged should have shown up in her performance appraisal and dealt with before now .The actions the company should take now is to have a viable HR syatem in place to be able to avoid such situations like this from happening in the first place. Because they would have known all the specific facts of the Pregancy Discrimination Act of 1978 and been better able to remedy the situation possible without a lawsuit. 5)An employee who is deaf has asked to switch jobs to be a delivery person and he was turned down. He is now threatening to sue. Recommend what the company should do and describe why. The company should allow the employee to switch because under the American Disabilities Act it prohibits employment discrimination against Qualified disabled individuals. It prohibits employers with 15 or more workers from discriminating against qualified individuals with disabilities with regard to applications, hiring, discharge, compensation, advancement, training, or other terms, conditions, or privileges of employment. It also says employers must make reasonable accommodations for physical or mental limitations unless doing so imposes an undue hardship on the qualifying job skill he should be able to switch and given reasonable accommodation in the form of modified work schedules, acquiring equipment or other devices to assist Kim.
Wednesday, January 22, 2020
Temptation in Where Are You Going , Where Are you Been? Essay -- Where
The Theme of Temptation in ââ¬Å"Where Are You Going , Where Are you Been?â⬠by Joyce Carol Oates In ââ¬Å"Where are You Going, Where Have you Been?â⬠Joyce Carol Oates uses an allegorical figure of evil to illustrate the theme of temptation. Oates alludes to hell through the character Arnold Friend, as the devil, and his victim Connie, who invites him in by committing the sin of vanity. The narrator implies that Arnold Friend is Satan by giving certain clues that the reader can easily deduce. The name that Oates gives to the character is one hint to the reader: ââ¬Å"Connie looked away from Friend's smile to the car, which was painted so bright it almost hurt her eyes to look at it. She looked at the name, Arnold Friend. She looked at it for a while as if the words meant something to her that she did not yet knowâ⬠(583). The name ââ¬Å"friendâ⬠was commonly used by the Protestants to refer to evil or the devil. Moreover, Arnold Friend's appearance also hints that he is Satan: ââ¬Å"There were two boys in the car and now she recognizes the driver: he had shaggy, shabby black hair that looked as a crazy wigâ⬠(583). The narrator emphasizes the ââ¬Å"wigâ⬠to make the reader think that he is wearing it for a purpose, which is hide his devilââ¬â¢s horns. Also, the fact that Arnold Friend's eyes are covered is another stragedy use by Oates to c onfirm the assumption of the diabolic presence: ââ¬Å" He took off the sunglasses and she saw how pale the skin around his eyes was it, like holes that were not in shadow but in...
Tuesday, January 14, 2020
Universities should accept equal numbers of male
This wildflower trends in society, in which the world outside education is a fairer one following defeatists movements. In terms of ability, women are Just as capable of allowing any subjects men and should be given the opportunity to do so. In academic terms a mixed calloused be a balanced one. On the other hand, university seats shouldn't be allocated according to gender butchering to other factors Like demand and supply for a particular course or meeting entertainments.Some courses Like teaching have a large number of female applicants helicopters may not be so popular. I think this has to do with personal preferences rather tonsorial conditioning. Perhaps choosing student based on entry requirement may even work infamous of female students who tend to do better at school than their male underpants. I believe the subject a student wishes to follow is a personal choice. Universities should bewailing to accept students on their academic ability and skills and not on their gender. Cl assless to courses should be provided to all applicants.Rather than exclude homogeneously from an important area such as education, they should be motivated undercharged to take part based on their merit. From the evidence of developing countries, the number of students with various subjects in the university Is far higher but the major factor Is equal demand In the field of differentiability. It Is difficult to keep parity of every subject for the administration In university. However, In my view, students both male and female should have entitled to access In versus]etc rather than being an equal number of genders In every subject.It is undoubtedly true universities are now full of crowded in order for the need of transferable subject. Therefore, most of the students often prefer most demanding subject likeliness course, psychology course and so on. In that case, administration assesses adequately of the students, which is good judgment in order to empower equally both male manhan dle. Female or male will be the candidate for a course by the selection procedure. If maintained parity, brighten male or female students may go out of estimate.On the other hand, there are a good number of subjects which are always dominated by tablemates, art and design course and nursing course are the example. If the administration's to fill up these fields by the males but remains vacant at the last. Different subjective sundry demand according to the gender allocation. But every student gets provided same opportunities. In conclusion, I believe that students should not be deferred only by to deprive someone eventide good experience.
Monday, January 6, 2020
Catcher in the Rye Essay Levels of Meaning - 902 Words
Levels of Meaning in The Catcher in the Rye nbsp; Protected by a cocoon of naivetà ©, Holden Caulfield, the principal character in the novel, The Catcher in the Rye, therapeutically relates his lonely 24 hour stay in downtown New York city, experiencing the phony adult world while dealing with the death of his innocent younger brother.nbsp; Through this well-developed teenage character, JD Salinger, uses simple language and dialogue to outline many of the complex underlying problems haunting adolescents. nbsp;With a unique beginning and ending, and an original look at our new society, The Catcher in the Rye is understood and appreciated on multiple levels of comprehension. The book provides new insights and a fresh view of theâ⬠¦show more contentâ⬠¦He says, Anyway, I kept picturing all these little kids playing some game in this big field of rye and all. Thousands of little kids, and nobodys around - nobody big, I mean - except me. And Im standing on the edge of some crazy cliff. What I have to do, I have to catch everybody if they start to go over the cliff - I mean if theyre running and they dont look where theyre going. I have to come out from somewhere and catch them. Thats all Id do all day. Id just be The Catcher in the Rye and all. I know its crazy, but thats the only thing Id really like to be. (173) By saying this, Holden exposes his deepest desire, and Salinger exposes the books theme. Holden wants to protect childhood innocence, saving kids from having to live in the crazy and phony, adult world. This idea that pure children lose their innocence as they grow old is explored through the whole text. Holden is appalled by the phrase Fuck You written on school walls that are supposed to shield kids away from society. Also, Holden gives his Red Hunting cap to Phoebe to wear, acting as a shield, symbolizing security and protection. By the storys end Phoebe, riding on a carousel, a childlike image, waves to her protective brother, only happy as an idealized selfless secular saint. Like the emotion Holden felt in Phoebes school because of the walls, he becameShow MoreRelatedEssay about Censorship and Catcher in the Rye751 Words à |à 4 PagesChristi Johnson English 11 Pd. 5 Censorship Essay The Catcher in the Rye has been an instant classic since it was first published. It has been on the New York Times Best Seller list along with being among the most banned books in the U.S. It has been banned for its harsh language and bad behavior. But truly these are not good reasons to ban a book; a book that is so enjoyed by many readers and the reality of the protagonist. It is never good to hear profound language but the book is justRead MoreCatcher in the Rye4413 Words à |à 18 PagesThe Catcher in the Rye ââ¬Å"Is The Catcher in the Rye, as a work of literature still relevant for todayââ¬â¢s youth?â⬠Name: Sara Sigurdson Course: English A1 Supervisor: Mr. Peter Steadman Word count: 3851 Candidate number: 00136022 Table of Contents Content Page Number Abstract 3 Introduction 4 The Actual Catcher in the Rye 4 The Sexual Matter 5 The Caulfield Family 6 Narrator and Protagonist 8 Role Model 9 Mr. Antolini 10 Targeted Audience 10 Guidance 12 Read MoreEtymology and Symbolism of Characters Names in Catcher in the Rye1967 Words à |à 8 PagesNames in Catcher in the Rye à à à à Catcher in the Ryes pallid cover, adorned only with seven multicolored bands in its upper-left corner, is not what one would call eye-catching. Its reverse side lacks criticisms or reviews of any sort; in fact, it is bare of anything except a copyright date. Human beings are advised not to judge books by their covers, rather that they should look further than the obvious and try to apprehend the implied meaning. The world has peered past Catcher in theRead MoreEnglish, Analytical Essay, Catcher in the Rye and Huckleberry Finn1507 Words à |à 7 PagesHuckleberry Finn and The Catcher in the Rye essay The novels ââ¬ËThe Adventure of Huckleberry Finnââ¬â¢ and ââ¬ËThe Catcher in the Ryeââ¬â¢ are both set in times where the expectations of society differed from the ones of today. Huckleberry Finn is set in the late 1800s, pre USA civil war and in a time where slavery was an accepted occurrence and the escape of a slave was seen as legally and morally wrong. This was also a time in which church attendance and education were seen as tokens of respectability. ARead MoreMacbeth vs Holden1435 Words à |à 6 PagesShakespeare wrote the play Macbeth using Macbeth as a protagonist in this old English play. Holden Caulfield is also the main character in ââ¬Å"the catcher in the ryeâ⬠written by J.D Salinger. This essay will elaborate on the similarities of the characters and the difference in their individual societies. What external forces are used? Are they honest, do they lie? What kind of influence are women? I will illustrate the strategies used between the characters and different qualities they obtain. HoldenRead MoreComing Of Age Is A Process1834 Words à |à 8 PagesI, I have undoubtedly changed as a reader. Prior to, my reading style was surface level. A rookie detective, I was not particularly vigilant towards all the details of a case; similarly, as a student, I was unobservant to the specifics of a text and my annotations were somewhat verbose. I viewed reading as a chore, was often unenthused, and would mostly annotate on the overarching themes without gathering any meaning from them. Books were merely a series of words printed on paper. This school yearRead MoreThe Existence of God and the Meaning of Life Essay1062 Words à |à 5 Pages Canadian author, W.O. Mitchell, is fascinated with the meaning of life. Whether this is a result of growing up during the depression or simply indicative of Mitchellââ¬â¢s deep philosophical thinking, this theme constantly shows up in his work. In both his humorous drama, The Black Bonspiel of Wullie MacCrimmon and the eloquent childrenââ¬â¢s Canadian classic, Who has Seen the Wind, Mitchell tackles the age-old question with grace, humor, and care. Not only is Mitchell concerned with the minute detailsRead MoreThe Importance of the Act of Readingâ⬠by Paulo Freire essay1318 Words à |à 6 Pagesnations ability to digest and grasp reading, references and lack of familiarity with things and he portrays an example of this in his article. He devised a study by comparing the effects of two groups similar in age, sex, marital status, education level, and professional specialty, on their reading speed and accuracy of comprehension by giving them familiar and non-familiar let ters. Both letters were very similar, except one was about an American wedding, the other about an Indian wedding; both groupsRead MoreMedia Magic Making Class Invisible2198 Words à |à 9 Pagessupports his statement that the class you are in effects you in the classroom and your level of achievement, by using statistics from researcher William Sewell. Sewell à ¢Ã¢â ¬Ã
âshowed a positive correlation between class and overall educational achievement. In comparing the top quartile (25%) of his sample to the bottom quartile, he found that students from upper-class families were twice as likely to obtain training beyond high school and four times as likely to attain a postgraduate degreeà ¢Ã¢â ¬Ã (pp.342-343)Read MoreThe Modern Entertainment Industry1776 Words à |à 8 Pageswant to have the child be an extra in a movie just for the fun of it and to give them experience in handling their own money. All parents have certain hopes and expectations for their children, however the parents of child actors push this to another level. Their expectations can be increased for a number of reasonsââ¬âone being in the hopes that their child might be able to help provide for the familyââ¬â¢s income. Child performers who are represented by larger corporations face an even larger amount of expectation
Sunday, December 29, 2019
The Myth Of Mental Illness - 750 Words
Marquiel Dodson 12/10/15 Psychology 201 Dr. Streeter Final Exam I enjoyed every bit of this Introduction to Psychology class. I put together many things about myself and my own life that I didnââ¬â¢t notice before. Now that I have been introduced to the realm of psychology I have a much better understanding of the reasons of behavior that is around me every day. During this semester in Psychology 201 one very interesting thing we covered was The Myth of Mental Illness by Thomas Szasz. In this book Szasz states that mental illness has no physiological change. He is not judgmental at all, and discusses the advantages to the patient and the doctor. I totally agree with Szasz on his belief that autism is not a mental illness although autism is treated as a mental illness. Thomas Szasz stated this about autism, ââ¬Å"With the passing of the years, my earlier conviction that conflict and disagreement are not diseases has only grown, and with it my conviction that listening and talking are not instances of medical treatment. This does not mean that I disparage listening and talking; quite the contrary. Attending to what another person tells us and being able to hear what is in his heart as well as on his lips is an exceptional skill, growing rarer by the day, especially among psychiatrists; the same goes for addressing another person and being ab le to tell him frankly, simply, and without humiliating him.â⬠(The Ethics of Psychoanalysis, 1974) He is clearly trying to explain that mentalShow MoreRelatedThe Myth Of Mental Illness957 Words à |à 4 PagesIn 1961 Thomas Szasz penned a book by the title The Myth of Mental Illness that would go on to cause quite the stir in the world of psychiatry. In the book, Szasz stated his belief that what most psychiatrists would label as mental illnesses are in fact not illnesses at all, but instead what he would go on to call ââ¬Å"problems in living.â⬠This article will take a critical approach at Szasz reasons for his belief in these ââ¬Å"problems in livingâ⬠including an objective outline of his argument, a discussionRead MoreThe Myth of Mental Illness2711 Words à |à 11 PagesThe Myth of Mental Illness Mental illness has existed since the dawn of humanity, but has since been perceived and understood in various ways. This essay will examine the contemporaryç ¾Ã¤ » £Ã¤ º ºdefinition of mental illness and how the definition is shaped more by the contemporary society that creates it rather than by real experience and understanding of the state itself. Unavoidably, this examination of a largely misunderstood subject leads to an investigation of the societal and philosophical influencesRead MoreThe Myth Of Mental Illness By Thomas Szasz Summary1472 Words à |à 6 PagesReview of Thomas Szasz. M.D.,The Myth Of Mental Illness: Foundations of a Theory of Personal Conduct. Thomas Szasz was one of the first psychiatrist to criticise psychiatry and argue about the concept of mental illness. His book ââ¬Å"The Myth of Mental Illness: Foundations of a Theory of Personal Conductâ⬠highlights the fundamental flaws in the administration of psychiatry, with the aim of challenging the medical characteristics of the concept of mental illness and the wrongful treatment of patientsRead MoreMental Illness781 Words à |à 4 Pageshead: MENTAL ILLNESS Mental Illness Natalie Maxwell March 8, 2010 Each year, almost 44 million Americans experience a mental disorder. In fact, mental illnesses are among the most common conditions affecting health today. The good news is that most people who have mental illnesses, even serious ones, can lead productive lives with proper treatment (www.yahoo.com). Mental illnesses are some of the most misunderstand afflictions in todayââ¬â¢s society. Too many people think of mental illnessRead MoreThe Portrayal Of Mental Illness962 Words à |à 4 PagesPortrayal of mental illness in media, films and television programmes is extensive and predominantly preserves myths and stereotypes about mental illness. People with mental illness are most commonly shown as being violent and aggressive, but they are also frequently depicted as tragic, tortured, genius, dangerous, eccentric, flamboyant, hysterical, sexual, jokers and rebels. Mental health professionals are variously portrayed as incompetent, sinister, unrealistically seductive or rationalist foilsRead MoreMental Health And The Media982 Words à |à 4 PagesMental Health and the Media Mental illness in general carries an enormous stigma. People have respect for and take seriously physical ailments but when it comes to mental illness there is still immense discrimination. The stigma that comes from having a mental disorder such as, bi-polar depression, schizophrenia, or panic disorder comes with an enormous societal cost and can cause people not to talk about it. They may feel ashamed, embarrassed or fear stigma. Not seeking treatment causes people livingRead MoreAnorexia Nervosa: Nursing Interventions1326 Words à |à 5 PagesAnorexia nervosa: Nursing interventions Anorexia nervosa has a higher mortality rate than any other psychological illness. Its primary clinical feature is extreme emaciation as a result of the patients refusal to maintain a healthy body weight. Weight loss may be achieved through caloric restriction or a combination of caloric restriction and purging behaviors (vomiting, laxatives, and exercise) (Understanding eating disorders, 2013, Australia Psychological Society). Besides self-starvation, otherRead MoreThe Portrayal Of An Issue Like Mental Illness1328 Words à |à 6 PagesIt is easy for an audience to be manipulated by the media. The portrayal of an issue like mental illness is totally vulnerable to misrepresentation. Depending on who is writing and their viewpoint, it does not take much to make this issue sympathetic or demonized. If the author of a given piece wants his or her audience to demonize something, the author might use the word isolationâ⬠. If that same author wants a sympathetic response he might use the word lonelinessâ⬠. As far as the New York TimesRead MoreThe Stigma Associated With Bipolar Disorder1448 Words à |à 6 Pageseffects remain: often multiplied by individuals that have a limited understanding of the disorder. There are numerous myths related to individuals diagnosed with bipolar disorder. Hopefully a few of these myths will be put to rest after learning more about the disorder. What is bipolar disorder? As defined by the (NIMH 1), ââ¬Å"Bipolar disorder, also known as manic-depressive illness, is a brain disorder that causes unusual shifts in mood, energy, activity levels, and the ability to carry out day-to-dayRead MoreClinical Diagnoses Of Bipolar Disorder1616 Words à |à 7 Pagessymptoms that are related to mental illness have increased dramatically within the last several years, and treatment is becoming more specialized. But, unless you study these disorders, or have some degree in psychology, the basis of your knowledge of these disorders comes from media, movies and newspapers. Mass media is the publicââ¬â¢s primary source for information so when they decide to present breaking news about some criminal felon who reportedly suffers from mental disorders such as bi-polar or
Saturday, December 21, 2019
Shakespeares Presentation of Shylock in The Merchant of...
Shakespeares Presentation of Shylock in The Merchant of Venice In every play or story, you need a villain, someone you can hate - in Cinderella you have the evil stepmother, in Harry Potter you have Lord Voldermort, and in the Merchant of Venice you have Shylock. In this scene, I see Shylock not as the comical buffoon or villain but as the outsider. The scene opens with a conversation between Basanio and Shylock. Basanio wants to borrow three thousand ducats from Shylock for three months, but Shylock is reluctant. Antonio is then introduced into the conversation, and Shylock takes more interest in the proposition. Eventually, Shylock agrees to lend the money to Basanio, interest free, on oneâ⬠¦show more contentâ⬠¦He is especially bitter during his speech when he lets us know what Antonio had done to him in the past week. He is most calm and pleasant at the start of the scene, when he is thinking over Basanios request. As the scene goes on, he is reminded of what happened to him in the past and you can sense the bitterness in his voice. By the end of the scene you can get the impression that he is ready to kill Antonio. This is when he draws up the bond. Shylocks character develops with the scene from being, at the start, an innocent and vulnerable man who we (in modern times) feel sorry for, although the Elizabethans would have seen him as an evil murderous Jew; whilst we feel sorry for him, the Elizabethan audience would have hissed at Shylock and praised Antonio for what he did to Shylock. His character develops slowly until he becomes a bitter, hateful man until at the end of the scene the change in his character is more apparent. Shakespeares presentation of Shylocks character has not been typical of the way he is presented in the play as a whole until this point. It is only from the point in his speech where Shylock recollects Antonios wrongs that his character changes into the dangerous and obsessive villain that is typical of the rest of the play, although Shylock sees himself as the tragic hero. People are most likely to feelShow MoreRelated Shakespeares Presentation of Shylock in The Merchant of Venice831 Words à |à 4 PagesShakespeares Presentation of Shylock in The Merchant of Venice This essay is an analysis of how the character of Shylock, in the play The Merchant of Venice, is presented to the audience, by Shakespeare, in different ways. The riveting play shows the best and worst aspects of human nature and contains one of Shakespeares most reviled, complex and compelling characters. Love and romance end this play, yet before that come bigotry, racism, hatred, death threats andRead MoreShakespeares Presentation of Shylock in the Merchant of Venice1458 Words à |à 6 PagesShakespeares Presentation of Shylock in the Merchant of Venice In the Merchant of Venice, Shylock is continually involved in the bond plot. This plot is probably the most intense story-line in this Shakespeare play. Bassanio borrows money from Shylock in Antonios name in order to impress Portia, however after a tragic incident involving all of Antonios ships crashing; the money has failed to be returned. According to their bargain Antonio must now give Shylock a poundRead MoreA Study of Anti-Semitism in The Merchant of Venice Essay1540 Words à |à 7 PagesA Study of Anti-Semitism in The Merchant of Venice ââ¬ËThe Merchant of Veniceââ¬â¢ was written by Shakespeare in 1596 and appeals to both audiences of comedy and tragedy. The play features anti-Semitism which is a response to 1500ââ¬â¢s Britain as well as other literature of the time. Anti-Semitism is the term used to describe discrimination towards Jews and Judaism. ââ¬ËThe Merchant of Veniceââ¬â¢ has received both positive and negative comments over the centuries and throughout thisRead MoreShakespeareââ¬â¢s Presentation of Antonio in The Merchant of Venice1288 Words à |à 6 PagesShakespeareââ¬â¢s Presentation of Antonio in The Merchant of Venice Shakespeareââ¬â¢s portrayal of Antonio in ââ¬ËThe Merchant of Veniceââ¬â¢ is decidedly open to interpretation, as his melancholic nature is revealed at the start of the play and foreshadows his later bad luck, but a specific reasoning behind it is never given. For an Elizabethan audience, Antonio provides the perfect Christian protagonist to Shylockââ¬â¢s evil Jewish antagonist, although our modern reception of him isRead More Justice and Prosperity in Shakespeares The Merchant of Venice1545 Words à |à 7 Pages One of the strengths of good theater is its ability to mirror the problems and conditions shaping its time. In The Merchant of Venice, William Shakespeare reflects two important aspects of Elizabethan society: the corrupting influence of prosperity and the increasingly vengeful nature of Venetian justice. To address the former issue, Shakespeare downplays the importance of wealth by associating its involvement in romance with superficial and insubstantial advantages. He characterizes prosperityRead MoreEssay about Directing William Shakespeares The Merchant of Venice871 Words à |à 4 PagesDirecting William Shakespeares The Merchant of Venice I am going to set my theatrical production of Merchant of Venice act 1 scene 3 in a building in a street in Venice. The building in which this scene is set should be lit by candle light creating a slightly dark, gloomy atmosphere to give the audience a sense of mischief and wrong doing on Shylocks part. Costume wise I would make a clear distinction between the clothes of Shylock and the Venetians. Shylock will wearRead More Merchant of Venice Essay: Antonios Love for Bassanio1721 Words à |à 7 PagesAntonios Love for Bassanio in The Merchant of Veniceà à à à à Antonio feels closer to Bassanio than any other character in The Merchant of Venice. Our first clue to this is in the first scene when, in conversation with Antonio, Solanio says, Here comes Bassanio, your most noble kinsman, / Gratiano, and Lorenzo. Fare ye well: / We leave you now with better company (i. i. 57-59). Once Antonio is alone with Bassanio, the conversation becomes more intimate, and Antonio offers an indebted BassanioRead MoreThe Way Shylock is Presented in William Shakespeares The Merchant of Venice1641 Words à |à 7 PagesThe Way Shylock is Presented in William Shakespeares The Merchant of Venice The Merchant of Venice is about the conflict between a Jew and a Christian. This is not between one Jew and one Christian but between Shylock, who stands as a representative of the Jewish tribe, and between groups of Christians who greatly outnumber the Jew. The conflict between Jews and Christians is a historical one. The Christians hated the Jews because they made money from usury; this was Read MorePresentation of Hamlet in Act 2 Scene 2 and 3 in William Shakespeares Hamlet663 Words à |à 3 PagesPresentation of Hamlet in Act 2 Scene 2 and 3 in William Shakespeares Hamlet It is hard to determine the intentions of William Shakespeare when he wrote Hamlet without looking at the social, historical and ethical context in which it was conceived. From the cover notes found within the Longman Literature edition, we can deduce that it is Shakespeares most well known play and, written during the year 1602, it was one of his later works. At this time, revenge was aRead MoreThe Presentation of Shylock and Antonio as Conflicting Opposites in The Merchant of Venice1123 Words à |à 5 PagesThe Presentation of Shylock and Antonio as Conflicting Opposites in The Merchant of Venice Shakespeare personifies the juxtaposed themes of this play; justice and mercy, forgiveness and revenge. He contrasts characters of Shylock and Antonio to represent these key ideas. Shakespeareââ¬â¢s character representations of these themes certify that they are constantly played out against each other throughout the play. The play presents anti-semitic ideas, depicting Shylock, a Jew
Friday, December 13, 2019
Harmful Algal Blooms and Aquaculture Free Essays
string(171) " Algal Blooms Historically algal blooms are a naturally occurring phenomenon in earthââ¬â¢s oceans and have been observed throughout recorded history \(Hallegraeff, 1993\)\." Harmful Algal Blooms and how they are Linked to Aquaculture Abstract Harmful algal blooms cause a wide range of negative effects on aquaculture. These effects are come from the complexity of harmful algal species; the toxins they create and morphology they have adapted. Science still lacks a full understanding of factors that are envolved in blooms formation. We will write a custom essay sample on Harmful Algal Blooms and Aquaculture or any similar topic only for you Order Now Aquaculture and harmful algal blooms are directly related because it is one of many anthropogenic factors that unintentionally produce the conditions that promote harmful algal blooms. The methods of production, feeds used, waste produced can lead to nutrient loading and eutrophic conditions by releasing essential nutrients into water that are necessary for algal growth. Phosphorus and nitrogen compounds are two of the main byproducts or aquaculture that are associated with bloom formation. To minimize the effects of harmful algal blooms on aquaculture you must understand the diversity and complexity of harmful algal blooms and their relationship with aquaculture. Abstract Harmful algal blooms cause a wide range of negative effects on aquaculture. These effects are come from the complexity of harmful algal species; the toxins they create and morphology they have adapted. Science still lacks a full understanding of factors that are envolved in blooms formation. Aquaculture and harmful algal blooms are directly related because it is one of many anthropogenic factors that unintentionally produce the conditions that promote harmful algal blooms. The methods of production, feeds used, waste produced can lead to nutrient loading and eutrophic conditions by releasing essential nutrients into water that are necessary for algal growth. Phosphorus and nitrogen compounds are two of the main byproducts or aquaculture that are associated with bloom formation. To minimize the effects of harmful algal blooms on aquaculture you must understand the diversity and complexity of harmful algal blooms and their relationship with aquaculture. Andrew Blajda Introduction Over the last several decades harmful algal blooms events or HABs are believed to be increasing in frequency and geographic range. The reported increase is a major concern because of the wide scale impact they have on he environment and human activities. The effect of HABs on aquaculture can be very damaging with reduced growth, mortalities or accumulation of toxins. If aquaculture operations take place in the open bodies of water they have little or no way of avoiding incoming blooms. Harmful algal bloom events that come in contact with aquaculture operations often have negative effects that can include student growth, weakened immunity, mortalities, and on econo mic losses. One of the bigger concerns today is the apparent increase in harmful bloom events. Researchers have linked this increase with anthropogenic activities, aquaculture being one of them. Aquaculture operations adds additional nutrients to the system, this lowers nutrients that limits algal growth. A better understand of the dynamics and characters the form and make up a bloom combined with the a better understanding of nutrient loading of aquaculture could potentially help reduce the negative effects harmful algal blooms have on aquaculture. Single celled microscopic algae like phytoplankton are the most globally abundant species and one of the oceansââ¬â¢ most important resources. These autotrophic primary producers form the bottom of the food pyramid, acting as the primary source of food for larval finfish, crustaceans, filter feeding bivalves, and other species (Hallengraeff, 1995). In normal concentrations, these single celled algae work in balance with the ocean and its inhabitants, filling important roles in chemical and nutrient cycles. They act as primary producers, providing nutrients and food for variety of different species. These simple microscopic species are vitally important to the success of both fisheries and aquaculture, but in some situations they can also have detrimental effects on the marine and coastal environment and numerous terrestrial and marine species. A combination of physical, chemical, biological, hydrological, and meteorological events can generate appropriate conditions that allow these simple single celled microalgae can exhibit exponential growth and reproduction. These natural events create the opportunity for algal bloom formation with potential large scale negative effects throughout the area they cover (Graham, 2007). Algal blooms can be very diverse and differ from one another in many ways . How they form, the algal specie of causation, characteristics and dynamics of a blooms, the species they affect, and impacts they cause are some of the complex factors that are found in blooms (Zingone Enevoldsen, 2000). The specific characteristics used to define a harmful bloom vary by sources. Hans Paerl, among others, defined harmful blooms by using several characteristics. Paerl also defined harmful blooms at their most basic level by classifying them as having nuisance conditions, meaning ecological and/or economic impacts (Paerl, 1988). As harmful algal blooms move across the ocean, the observable effects they cause go beyond the ocean and marine species it covers. These events will also have wide spread negative impacts on costal terrestrial organism and both human health and activities. Algal species produce sevral different toxins that are detrimental effects to human health, causing various illnesses and mortalities. About 10% of foodborne disease in the United States results from algal toxins; worldwide they cause more than 60,000 intoxications a year. Van Dolah, 2000) Economic losses due harmful algal blooms have been estimated in the tens of millions of dollars, from costs of beach clean ups, decreased tourism, and closing or stopping sales of commercial fisheries and aquaculture (Van Dolah et al. , 2001). Over the past several decades there has been an apparent increase in the frequency and geographic range of harmful algal blooms. This apparent increase has been attributed to both increased observations and focus on harmful algal blooms and increased inputs from anthropogenic sources. Aquaculture is one of many anthropogenic activities that is believed to be hypernutrification and eutrophic conditions in surrounding bodies of water. This paper will attempt to gain a better understanding of diversity of harmful algal blooms and also the effect aquaculture has on the environment in adding in formation of harmful algal blooms. Algal Blooms Historically algal blooms are a naturally occurring phenomenon in earthââ¬â¢s oceans and have been observed throughout recorded history (Hallegraeff, 1993). You read "Harmful Algal Blooms and Aquaculture" in category "Essay examples" These events are often beneficial to bivalves by supplying an abundant food supply to these filters feeding that relay on microalgae for their source of nutrients. Algal blooms can quickly turn into detrimental to the environment and its inhabitants are various ways (Leverone, 2007). Sources from human history including the bible may contain the first documented cases of algal blooms. In Exodus 7: 20-21 referring to one of the plaques on Egypt ââ¬Å"all the waters that were in the river turned to blood, and the fish that was in the river diedâ⬠. Some historians and scientist now believe this biblical reference from 1,000BC could be the first written record of an algal bloom. (Hallegraeff, 1993) Other historical sources may have unknowing recorded written evidence on algal blooms, in China around 200AD general Zhu Ge-Ling documented sicknesses and losses of military personnel after drinking from a river that was stained green. (Chorus Bartram, 1999) Examination of fossil algal specimens and historical reference compounding evidence that these event are not a new phenomenon and have been occurring in earthââ¬â¢s oceans for thousands if not millions of years. Recent finding from numerous long term studies conducted around the world has brought a strong belief in the scientific community that algal blooms have been increasing in their frequency and geographic distribution. Even though most scientiest support the idea of a global increase of blooms and twith strong evidence supporting this theroy there is still a major dissagreement about what is causing the increase (Pelley, 1998). The apparent increase of algal blooms, along with the global impacts on aquatic organisms, the environment, human health, and activities has increased interest and research being done on these events (Li et al. 2002; Van Dolah et al. , 2001). The exact characteristics and descriptions that define an algal bloom are fairly broad and very from source to source. I was unable to find a universal definition of algal blooms. The description and definition I came across were similar but differed in many aspects; this included sizes, formation factors, impacts, and alga l species. Overall algal blooms are generally defined significant increase in biomass due to a rapid reproduction of a single microalgal species. The problem with this source is there can also be macroalgal blooms. Others described them as forming high density populations, with some species creating visible discoloration of the water. (Carstensen, Henriksen, Heiskanen, 2007; Diersing, 2009) Others define blooms by impacts they cause; displacing indigenes species, destroy habitat, oxygen depletion, and alter biochemical cycles. (Hoagland et al. , 2002) A more generalized definition was given by Hallegraeff, adding that a bloom must have at least million cells per liter (Hallegraeff, 1993). The defining characteristic that differentiates a bloom from a harmful algal bloom is when they takes on a destructive roll and causes environment impacts. The term harmful is defined more specifically as causing negative impacts on the environment and adverse effects on both aquatic and terrestrial organisms. This is due to factors such as toxins they produce, specie specific cell physical structure causing damage to aquatic organisms or by accumulation of biomass affect naturally occurring organisms causing alterations food web dynamics and biochemical cycles (Anderson et al. 2002). Depending on the species, some algae produce toxins that can affect crustaceans, fish, shellfish, birds and mammals including humans; nontoxic species can still causes damage by blocking light from penetrating the water column, clogging or damaging gills, and creating anoxic conditions from accelerated decomposition as they die off (Silver et al. , 2006; Sellner et al. , 2003) Harmful alga can also have impacts on shoreline coastal habitats, toxins can be transported onto the shore by sea spray (Hoagland et al. , 2002). There are over 5,000 know photoplanktonic algal species that inhabit the marine waters only a small portion, about 300 species are known to have blooming capabilities and even fewer, about 40-80 species or 2-3% of all photoplantonic algal species are known to have toxic chemicals producing capabilities; this includes members that form red tides (Hallegraeff, 1993; Smayda, 1997). Nontoxic red tides are not uncommon, today people often incorrectly or mistakenly refer to toxic algal blooms as red tides even when brown, green or colorless (Anderson, 1994). Toxic and other harmful algal species are ubiquitous throughout the marine and freshwater environment; the majority of the time they present at low population densities that cause few, if any and only minor impacts on the environment and its local inhabitants (Van Dolah, 2000). There are a variety of different phycotoxins algal species are able to synthesize; individual species will only produce one type of toxin. The evolutionary advantages of these toxins are not fully understood; they are believed to play a role in bloom formation and predator protecting (Nehring, 1993). The different phycotoxins vary from one another in terms of the impacts and degree of damage they have on marine and terrestrial organisms, depending on the toxicity, the concentration, and the organisms. Toxicity vary among algal species Dinophysis is one example, they have the ability to produce toxins that have negative effects at densities as low as 100 cells per L-1 (Sellner et al. , 2003). The most toxic algal species are mainly found in dinoflagellets (Table 1) with some having toxicity greater than venomous snakes. Table 1. Toxicity of several phycotoxins created different organisms including algae. (Van Dolah, 2000) The taxonomic algal groupsââ¬â¢ dinoflagellets, raphidophyetes, cynobactria, and some diatoms are known to have the capabilities of phycotoxins production; these species are often the culprit behind harmful algal blooms. Phycotoxins are toxic chemicals created biologically by photosynthetic organisms. Dinoflagellets are one of the predominate species that forms red tides; members of this group also produce toxin that lead to foodborne illness and human mortalities (Li et al. , 2002; Hallegraeff et al. 1995). Human induced illnesses are not an uncommon result from consumption of seafood. Many algal toxins are potentially dangerous and even deadly to humans. Toxins accumulate in tissues of organisms like shellfish, finfish, and crustaceans that come in contact with a toxic bloom. These species are usually far less affected by algal toxins having adaptive mechanisms that lower the effects o n the organisms associated with toxic blooms. However toxins still accumulate within the tissues and detoxification can take weeks before they reach levels safe for human consumption. Algal toxins cause for concerns for humans not only because they maintain their toxicity long after the bloom but more importantly because they can withstanding heat from cooking. Algal toxin foodborne diseases are caused by various species or toxins and come from different vectors. Bivalve vectors can induce human illness that include (Table 2) paralytic shellfish poisoning (PSP), neurotoxic shellfish poisoning (NSP), amnesic shellfish poisoning (ASP), diarrhetic shellfish poisoning (DSP); other vectors can lead to various other diseases as well (Van Dolah, 2000). The popular term of red tide given to harmful algal bloom comes from compact, high densities of algal cells that containing red photosynthetic pigments, causing the water to appear red (Carstensen et al. , 2007). These toxic species can normally be found in low concentrations have no impacts on organisms and environment. The adverse effects on organism often deepened on cell concentration; in blooms toxic algae aggregate and are more dangerous (Van Dolah, 2000). Some toxic algal species have developed unique life cycles and morphological characteristics that allow them to occupy a specific niche that will be further examined. Table 2. Foodborne and environmental disease caused by harmful algal species, the toxin produced and the primary vector they inhabit. (Van Dolah, 2000) Harmful algal species have many adverse impacts on bivalvesââ¬â¢ this includes a wide range of sub-lethal and lethal effects; some algal species are more detrimental than others (Leverone, 2007). It is believed that increase frequency of blooms is partially due to the introduction of non-indigenous algal species. Non-indigenous species potentially will create a specific niche, and/or out compete native species. Indigenous naturally occurring harmful algal species are far less direct effects on bivalves; this is because they have been able to naturally adapt to their presence over time. Native algal species in most case do not have as bad direct, detrimental impacts on shellfish and are usually not associated with large scale bivalve die off. The exception to this is in cases of intense blooms (Matsuyama Shumway, 2009; Nehring, 1993; Zingone Enevoldsen, 2000). Itââ¬â¢s still hard to truly say many large scale die-offs and increase sub-lethal impacts are directly due to non-indigenous algal species because identification is sometimes difficult, longer term data individual algal species geographic ranges are limited combined, and the theory anthropogenic factors are causing an overall increase in blooms. In many circumstance of HAB mortalities itââ¬â¢s difficult to differentiate whether they resulted from the algal specie or unfavorable water quality that coincide with blooms (Anderson et al. , 2002; Leverone, 2007). Complex morphology are found in many harmful algal species that helps protect them from predation and the environment and help obtain nutrients. Diatom algae are members of the Bacillariophyceae class; they have been around for over 180 million years helping to create earthââ¬â¢s atmosphere and also play a major role in nutrient and chemical cycles. Over their evolutionary history diatoms have developed a variety of different exterior cellular morphology for protection from the environment and predation. They have a range of cell shapes and sizes and also form unique frustule cell walls made from silica. The frustule cell wall is made up of two over lapping overlapping silica bands forming a protective shell. The 100,000 diatom species have developed ââ¬Å"seeming infinite variationsâ⬠of cell wall micropatterns and structures; including ridges, spines and plates (Kroger Poulsen, 2008) These cellular morphological characteristics help protect them under adverse environmental conditions and restrict or prevent predation. Some species of diatoms have developed such strong cell walls with structural properties that enable them to survive ingestion and escape after passing through the digestive system. (Merkel, et al. 2003) The benefits of these structures do have negative effects and come at the expense of motile abilities, limits growth, and makes the cell very dense; motile restorations and high cell densities make diatoms much more likely to sink out of the high nutrient water column. Bloom Formation The intricacy of bloom formation is due to both the abiotic(environmental and anthropogenic factors) and biotic factors; these being the algae themselves. Adaptations of life cycle, morphology, and environmental conditions enable rapid reproduction of certain algal species that have developed specific niches (Sellner et al. 2003; Zingone Enevoldsen, 2000). Algal blooms formation driven by the complex relation between the environmental factors and algal species; although we understand the basics of formation there are still many unknowns. There are seemingly endless amounts of variables and factors that play a role in creating of a bloom. The main driving factors of when and where a bloom forms are a combination of environmental/anthropogenic factors (nutrient cycles and inputs) and algal morphology (Pinckney et al. , 1997; Sellner et al. ,2003). As simple as it sounds, there are countless variables including natural condition, anthropogenic effects, algal physiological and morphological characteristics that lead to the unpredictability and overall misunderstanding we still have on blooms. (Sellner et al. , 2003; Anderson, 1994) The belief that algal blooms are increasing in frequency and geographic range is a popular belief that is backed by numerous studies. The cause of this apparent increase has been attributed to the expanding human population (anthropogenic effects). Some still argue that the increase in blooms is due to the increase in observations from studies worldwide, a better understanding of blooms and better record keeping; but with overwhelming evidence supporting the lateral itââ¬â¢s hard to believe the human race is not playing a major roll. (Sellner et al. , 2003) Looking at the numer of literary reference to harmful algal bloom over 70 years(figure 1) shows a dramitic increase algal blooms from the 1920ââ¬â¢s through late 1990ââ¬â¢s (Hallegraeff, 1993). This also give arguments that increase research and technology contriubute to the increase ovserevd. Figure 1. Literary references of harmful algal blooms from Aquatic Sciences and Fisheries Abstract (AFSA) publications over about 70 years. The increase can be attributed to a combination of anthropogenic factors or increased observations and present arguments for both sides. (Hallegraeff, 1993) Today we have an understanding of the natural environmental processes and factors that lead to bloom formation; but the effects humans apply to the environment alter the natural cycles making it more difficult to predict blooms (Paerl, 1988). Blooms occur under irregular conditions that promote growth and reproduction allowing some species to flourish. The conditions found in blooms broad and often speciesââ¬â¢ specific adding to the complexity and unpredictability of blooms. In general the conditions associated with blooms are abundance (eutrophic), or an imbalance of nutrients, along with favorable water conditions (temperature, DO, salinity, etc. ). Natural processes like atmospheric deposition, water column turnover, upwelling, oceanic currents, storms, and anomalous weather events (El Nino) work together and fluctuate over time effecting mixing rates, water quality. Nutrients pools build up over time from organic decomposition in benthic sediment. Mixing of the sediment perelapses the nutrient pools and bring about eutrophic conditions or alter the water chemistry that enable specific species of algae to flourish (Sellner et al. , 2003; Van Dolah, 2000; Paerl, 1988). Natural mixing rates occur during regularly during temporal or seasonal with environmental fluxes or randomly from disturbances (natural anthropogenic). Sediment mixing are very important environment processes, releasing nutrients back into the water column allowing for increased primary producer growth. Seasonal and temporal sediment mixing produce lead to the specific conditions that form blooms. Eutrophication has been defined as ââ¬Å"an increase in supply of organic matter to the ecosystem; in terms of algal bloom this refers to an increase in nutrients that allows an increase of primary productionâ⬠(Bonsdorff et al. , 1997). Three key nutrients, nitrates ammonia and phosphates are associated with eutrophication and considered the driving forces behind bloom (Sheng, Jinghong, Shiqiang, Jixi, Dingyong, Ke, 2006). The levels found in marine waters are driven naturally based on natural events discussed above. Studies have found a correlation between anthropogenic actives leading to nitrogen and phosphorus nutrient loading and the apparent increase in frequency of algal blooms along with alteration of natural nitrogen/phosphorus ratio (Bonsdorff et al. , 1997; Paerl, 2009). There are various anthropogenic activities that have led to the both local and global increase of nutrients in fresh and marine waters. Aquaculture is just one of many of these activities. Many studies have shown that aquaculture operations have byproducts that can cause eutrophic conditions. Nutrient loading from aquaculture only has local effects and the amount of effects it causes is size dependent (Anderson et al. , 2002). Aquaculture and Nutrient Loading It is important to understand the relationship between aquaculture and harmful algal blooms. Additional nutrients from the feed used, effluent discharge, and waste products are some of the source that lead to nutrient loading (Tacon Forster, 2003). The amount of additional nutrients added to a system increases based on how intensive the operation is. HABs have wide spread negative impacts on aquaculture, the hope of significantly minimizing these impacts are still years away. To minimize the effects on aquaculture you must understand characteristics and dynamics of blooms, this includes the diversity of species involved and the factors associated with bloom formation. The apparent increase frequency and geographic range of harmful algal blooms is very important to aquaculture because aquaculture plays a role in helping create the conditions necessary for bloom formation. Aquaculture operations provided year round nutrient inputs in a local aspect, this eliminates nutrient limitations in those areas (Bonsdorff et al. , 1997). This section will discuss and review the relationship aquaculture has with nutrient loading and eutrophication of the surrounding water. Nitrogen and phosphors are to key elements that take on various forms necessary for bloom formation. Both nitrogen and phosphors in the forms of nitrates, ammonia, phosphates and other compounds are byproducts of aquaculture. Algal growth is limited by nutrient availability, mainly based on availability of nitrogen and phosphors in the environment. Nitrogen in the forms of nitrates and ammonia are water soluble and enter the system from either dissolved feeds, effluent discharge, or from waste produced by fish. Phosphates often accumulate mainly in the sediment and during mixing events are released into the water in high quantities (Karakassis, Pitta, Krom, 2005). Nutrient loading from aquaculture that leads to eutrophic conditions come from several sources. The amount and source of the nutrients depends on the operation. Location of farm (open ocean, ponds, raceways etc. ), what is being cultured (shrimp, finfish, bivalves), what are the inputs (feeds, fertilizer, etc. ) and how intensive the operation is. The source of local nutrient loading from aquaculture can be traced back to where the operation is taking place. Open ocean farming of finfish for instance causes eutrophic conditions right around the cages. On the other hand inland facilities such as pond systems and other flow through systems release effluent discharge causing nutrient in the and around the bodies of water they run into. The species being cultured also plays a major role. Bivalves for instance play a role in limiting algal growth by filter feeding, while finfish inputs and excreting essential nutrients in their waste is a major source of nutrients (Soto Mena, 1991). How intensive an operation is and the actual inputs into the system are directly related. The more intensive an operation the more inputs and the more inputs the greater chance of hypernutrification and eutrophic conditions. Different operations require different inputs and these inputs have different nutrient atios. Culture of some juvenile finfish require fertilization to promote phytoplankton growth for feed this puts the essential nutrients for algal growth directly into the system. The feeds used in aquaculture vary on the nutrients they are made up of, how stable they are and whether they float or sink. These factors are all in play in nutrient loading that come directly from aquaculture (Islam, 2005). The effects of aquaculture fe eds on nutrient loading depend on several factors. There are three main factors these include; 1) the amount of wasted feed. This is due to poor farming and management practice and floating Vs. sinking feeds. Poor management practices means over or an improper feeding technique that puts more feed in the water. Floating and sinking feed choices is also important. Sinking feeds may not be eaten by finfish if they go through the bottom of a net or cage, or if they sit on the bottom. On the other hand floating feeds may be less stable or uneaten if they are transported out of a system or to a place where they are unable to be eaten. 2) The actual quality of the feed. This poor stability and high solubility of feed pellets in water mean that once they are in the water they will be broken down and release more and nutrients and in less time. The final factor is deals is loosely related to the previous two. 3) Once the feed is ingested factors such as limitations of absorption and retention of the nutrients from the feed. This factor deals mainly with poor digestibility or metabolism of the species being culture to the feed they are given. The nutrients in the feeds many not be utilized to their full potential once ingested fish will excrete the excess nutrients (Soto Mena, 1991). Feed and nutrient inputs play a major role in nutrient loading and creating the conditions that promote algal growth either directly in the form of uneaten feeds or nutrients leaching or dissolving from the feeds, or indirectly from the digestion, metabolism and waste products from the species being cultured (Tacon Forster, 2003). The important of feeds in nutrient loading must not be overlooked one study estimated that 70% of phosphorus and 30-50% of nitrogen in feeds is not utilized by fish and is released into the environment (Soto Mena, 1991). This only shows two of the most essential nutrients associated with bloom formation and not the various other nutrients that are also released and are important for algal growth. This also shows the significance of feeds based on the large amount of nutrients that are not utilized and instead entering the environment, promoting algal growth. Over all aquaculture farm operations lead to excessive amounts of inorganic and organic fertilizer, feeds, and wastes that are put into local water bodies with high concentrations nutrient, that lead to nutrient loading and eutrophic conditions. Discussion and Conclusions Aquaculture over the last several decades has grown globally in both its production and popularity. In the future aquaculture will continue to grow in its importance to the human population as alternative food source to agriculture and wild fisheries, as well as helping with the depleted ocean stocks. As of now it appear that we will be seeing an increase in aquaculture around the world in the years to come. Although there are many benefits to aquaculture and the potential of increased production may have we must measure the benefits against the environment impacts they cause. Nutrient loading is just one of the environmental impacts associated with aquaculture and the effects of nutrient loading go beyond promotion of algal blooms. The global increase in aquaculture coincides with the apparent increase in harmful algal. Although there are many other anthropogenic factors that are at play in global nutrient loading aquaculture is a major local point-source form. We must understand the specific conditions that are associated blooms and the role aquaculture plays along with how complex and diverse blooms can if we hope to develop mechanisms that can significantly reduce the impacts on aquaculture. I choose the topic of harmful algal blooms and aquaculture effects of nutrient loading because it fits in perfect with our class: aquaculture and the environment. The purpose of this paper was to gain a general understanding of harmful algal blooms, and also to review the factors of aquaculture that lead to nutrient loading, eutrophic conditions, and the aid in bloom formation. This topic caught my attention because of similar topics Iââ¬â¢ve cover and work Iââ¬â¢ve done this semester in this class and others classes. Harmful algal blooms in general are very interesting because of the diversity of blooms, the range of effects they have, how unique the species involved are, and because of the complexity and over all lack of understanding have in factors of bloom formation. The purpose of this class included reviewing the impact of aquaculture on the environment and methods of reducing or eliminating those impacts. This paper focuses on harmful algal blooms and how aquaculture creates conditions that promoted bloom formation. I focused a great deal of this paper on harmful algal blooms because if you hope to minimize the impacts they cause you must appreciate and understand their complexity and also understand the relation they have with aquaculture. The purpose of this paper was not to examine direct ways in which to minimize nutrient inputs of harmful algal blooms but the information given on harmful algal blooms and the role aquaculture plays in promoting bloom formation is useful to future studies and reviews focusing on ways to minimize the impacts of HABs on aquaculture and help reduce the factors of aquaculture that promote harmful bloom formation. Bibliography Anderson, D. M. (1994). Red Tides. Scientific American Vol. 271, No. 2, 52-58. Anderson, D. M. , Glibert, P. M. , Burkholder, J. M. (2002). Harmful Algal Blooms and Eutrophication: Nutrient Sources, Composition, and Consequences . Estuaries Vol. 25, No. 4b, 704-726. Anderson, D. , Andersen , P. , Bricelj, V. , Cullen, J. , Rensel, J. (2001). Monitoring and Management Strategies for Harmful Algal Blooms in Coastal Waters. Paris: UNESCO. Bonsdorff, E. , Blomqvist, E. M. , Mattila, J. , Norkko, A. (1997). 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Ocean Coastal Management. How to cite Harmful Algal Blooms and Aquaculture, Essay examples
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