Cyanobacteria Blooms from Lake Okeechobee Discussion
Order ID 53563633773 Type Essay Writer Level Masters Style APA Sources/References 4 Perfect Number of Pages to Order 5-10 Pages
Cyanobacteria Blooms from Lake Okeechobee Discussion
Several coastal areas of Florida has been impacted by major algae blooms in recent years. Some of these blooms are caused by various kinds of freshwater cyanobacteria, often referred to as blue-green algae.
In addition, several coastal areas of southwest Florida, the panhandle, and, most recently, southwest Florida have been impacted by “red tides”, which in Florida area usually associated with a marine dinoflagellate called Karenia brevis.
While the two types of algae blooms are quite different in how and where they form, both cause significant environmental harm – including large fish kills. Toxins from Karenia brevis and certain kinds of freshwater cyanobacteria, particularly Microcystis and Anabaena species, can also have adverse impacts on human health.
Media and public discussions about these algal blooms have often been quite contentious, confusing, and, in some cases, outright wrong. Leading scientists have therefore attempted to communicate scientific knowledge directly to the public.
For this discussion board exercise, you will think carefully about the (somewhat different!) thoughts of two well-respected scientific researchers:
After reading both of these articles, answer the following three questions:
1) Based on what you have learned so far about the typical limiting nutrient in freshwater ecosystems (and, yes, Lake Okeechobee is freshwater), what nutrient would you generally expect to be the most likely limiting resource for Lake Okeechobee?
2) How do Crosby and Havens each describe the role of nutrient contamination, particularly phosphorus and nitrogen, in initiating freshwater cyanobacteria (aka, blue-green algae blooms) blooms in Lake Okeechobee? What other factors do either of these researchers cite as a potential “trigger” for the cyanobacteria blooms to form in Lake Okeechobee?
3) Based on your reading of both Crosby and Havens (as well as any materials from lecture or other sources), describe why and how severe freshwater cyanobacteria blooms frequently occur in normally brackish ecosystems like the St. Lucie River estuary (on the east coast) and Caloosahatchee River estuary (on the west coast). (Hint – freshwater cyanobacteria normally would not survive in a saltwater estuary environment.)
QUALITY OF RESPONSE NO RESPONSE POOR / UNSATISFACTORY SATISFACTORY GOOD EXCELLENT Content (worth a maximum of 50% of the total points) Zero points: Student failed to submit the final paper. 20 points out of 50: The essay illustrates poor understanding of the relevant material by failing to address or incorrectly addressing the relevant content; failing to identify or inaccurately explaining/defining key concepts/ideas; ignoring or incorrectly explaining key points/claims and the reasoning behind them; and/or incorrectly or inappropriately using terminology; and elements of the response are lacking. 30 points out of 50: The essay illustrates a rudimentary understanding of the relevant material by mentioning but not full explaining the relevant content; identifying some of the key concepts/ideas though failing to fully or accurately explain many of them; using terminology, though sometimes inaccurately or inappropriately; and/or incorporating some key claims/points but failing to explain the reasoning behind them or doing so inaccurately. Elements of the required response may also be lacking. 40 points out of 50: The essay illustrates solid understanding of the relevant material by correctly addressing most of the relevant content; identifying and explaining most of the key concepts/ideas; using correct terminology; explaining the reasoning behind most of the key points/claims; and/or where necessary or useful, substantiating some points with accurate examples. The answer is complete. 50 points: The essay illustrates exemplary understanding of the relevant material by thoroughly and correctly addressing the relevant content; identifying and explaining all of the key concepts/ideas; using correct terminology explaining the reasoning behind key points/claims and substantiating, as necessary/useful, points with several accurate and illuminating examples. No aspects of the required answer are missing. Use of Sources (worth a maximum of 20% of the total points). Zero points: Student failed to include citations and/or references. Or the student failed to submit a final paper. 5 out 20 points: Sources are seldom cited to support statements and/or format of citations are not recognizable as APA 6th Edition format. There are major errors in the formation of the references and citations. And/or there is a major reliance on highly questionable. The Student fails to provide an adequate synthesis of research collected for the paper. 10 out 20 points: References to scholarly sources are occasionally given; many statements seem unsubstantiated. Frequent errors in APA 6th Edition format, leaving the reader confused about the source of the information. There are significant errors of the formation in the references and citations. And/or there is a significant use of highly questionable sources. 15 out 20 points: Credible Scholarly sources are used effectively support claims and are, for the most part, clear and fairly represented. APA 6th Edition is used with only a few minor errors. There are minor errors in reference and/or citations. And/or there is some use of questionable sources. 20 points: Credible scholarly sources are used to give compelling evidence to support claims and are clearly and fairly represented. APA 6th Edition format is used accurately and consistently. The student uses above the maximum required references in the development of the assignment. Grammar (worth maximum of 20% of total points) Zero points: Student failed to submit the final paper. 5 points out of 20: The paper does not communicate ideas/points clearly due to inappropriate use of terminology and vague language; thoughts and sentences are disjointed or incomprehensible; organization lacking; and/or numerous grammatical, spelling/punctuation errors 10 points out 20: The paper is often unclear and difficult to follow due to some inappropriate terminology and/or vague language; ideas may be fragmented, wandering and/or repetitive; poor organization; and/or some grammatical, spelling, punctuation errors 15 points out of 20: The paper is mostly clear as a result of appropriate use of terminology and minimal vagueness; no tangents and no repetition; fairly good organization; almost perfect grammar, spelling, punctuation, and word usage. 20 points: The paper is clear, concise, and a pleasure to read as a result of appropriate and precise use of terminology; total coherence of thoughts and presentation and logical organization; and the essay is error free. 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The paper has slight errors within the paper. This can include small errors or omissions with the cover page, abstract, page number, and headers. There could be also slight formatting issues with the document spacing or the font Additionally the paper might slightly exceed or undershoot the specific number of required written pages for the assignment. 10 points: Student provides a high-caliber, formatted paper. This includes an APA 6th edition cover page, abstract, page number, headers and is double spaced in 12’ Times Roman Font. Additionally, the paper conforms to the specific number of required written pages and neither goes over or under the specified length of the paper.
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