Talk:Eutrophication

message: I have the pleasure of making some important improvements to this article especially re marine aspects thanks to input from Professor Tim Jickells (Univ of East Anglia). These changes are being made Feb 8, 2022. ASRASR (talk) 17:08, 8 February 2022 (UTC)
thread_title:  Expert comments from Tim Jickells 

message: Suggest that the following section be removed since it is repetitive https://en.wikipedia.org/wiki/Eutrophication#Overall_ecological_effects ASRASR (talk) 20:08, 8 February 2022 (UTC)
replies: text: I've reworked that section now. I think we should be mindful of reducing overlap with harmful algal bloom as that article is actually quite detailed about ecological effects of such blooms. EMsmile (talk) 12:26, 21 February 2022 (UTC)
thread_title:  Removal of repetitive sections (overall ecological effects) 

message: There was a hidden comment which said "An alternative definition: Eutrophication as defined by Nixon, 1995 is the increase in organic matter to an ecosystem. Most commonly, eutrophication is the process in which a body of water becomes overly enriched with minerals and nutrients inducing excessive growth of algae, often resulting in oxygen depletion as bacteria respire this excess organic matter." I don't know what this Nixon 1995 reference is and whether it's important? Should we add a section on terminology maybe? EMsmile (talk) 14:17, 22 February 2022 (UTC)
thread_title:  Comment about alternative definition 

message: There was a hidden comment about Nomura's jellyfish, do we really need it? If so, we'd need a reference to go with it: "Other species (such as Nomura's jellyfish in Japanese waters) may experience an increase in population that negatively affects other species." EMsmile (talk) 14:19, 22 February 2022 (UTC)
thread_title:  Comment about [[Nomura's jellyfish]] 

message: In the article we have a section on "terrestrial ecosystems" but in the first sentence of the article we define eutrophication as referring to water bodies. How can this be resolved? I am wondering if we should add a section on terminology to explain this. The term "terrestrial eutrophication" is not widely used, a Google search brings up only 27,000 hits. EMsmile (talk) 14:23, 22 February 2022 (UTC)
replies: text: BTW even some of those are about aquatic Eutrophication.  One of the meanings of "terrestrial" is "of the planet earth" and aquatic ecosystems could fall under that. But if sometimes refers to on-land,I think we need to cover it.   But we also need to convey that it generally means aquatic. North8000 (talk) 19:18, 24 February 2022 (UTC)
replies: text:  Housekeeping: this has now been clarified in the section on terminology. EMsmile (talk) 14:14, 26 May 2022 (UTC)
thread_title:  Is "eutrophication in terrestrial ecosystems / terrestrial eutrophication" really a thing or a misnomer? 

message: : Housekeeping: the two students didn't edit the eutrophication article but added eutrophication content at estuary which is also interesting. EMsmile (talk) 14:22, 26 May 2022 (UTC)
thread_title: Wiki Education assignment: Oceanography

message: A student (User:Kurt Krautmann) recently added a lot of content about Aluminum Sulfate Treatment. While the text seems to be OK and with suitable references, I would argue it is too detailed for this kind of overview article that eutrophication is and therefore not in line with WP:DUE. It needs to be condensed or moved to a suitable sub-article (perhaps to algal bloom? or to nutrient pollution?). Also I wonder if this kind of treatment is actually widely used. The references seem pretty old. If it was state of the art then surely there would be more recent references available? Pinging  and User:ASRASR  EMsmile (talk) 10:26, 9 May 2022 (UTC)
replies: text: The section by User:Kurt Krautmann on alum treatment is well researched and written. I agree it takes up too much space in the article and could be summarized in one much shorter paragraph instead. It could also be moved as is to another article eg nutrient pollution. Alum treatment which has its origins in water and sewage treatment was never designed for addition to natural water bodies. It is an expensive short-term solution to clear lake or pond water of phosphate and deposit it to the benthic zone. It can have serious side effects like acidification and toxic effects on organisms (fish and invertebrates). It should not be seen as a general remedy for eutrophication. It may be useful in some cases where the runoff and discharge sources of phosphorus have already been reduced but there continues to be internal P loading from the polluted sediments causing seasonal algal blooms. This would need to be determined on a case by case basis depending on the lake depth and existence of stable thermocline or even a chemocline. It could be best used in man-made ponds in urban areas to reduce algal blooms (eg during summer periods in temperate zones). Dredging of P-laden sediment however could be a better option. But even in such cases, prevention of P loading to the water body has to be the first priority for action. User:EMsmile ASRASR (talk) 09:14, 11 May 2022 (UTC)
replies: text: Regarding presence in this article, sounds we need somebody to condense it.         Maybe it should also get it's own article? North8000 (talk) 09:25, 11 May 2022 (UTC)
replies: text: Hi User:North8000. Maybe User:Kurt Kaufmann is interested in condensing the material. The summary could be added to the article on alum https://en.wikipedia.org/wiki/Aluminium_sulfate#Uses and then also "excerpted" to the eutrophication article. Also the present full section could be moved to the nutrient pollution article https://en.wikipedia.org/wiki/Nutrient_pollution as suggested by User:EMsmile. It could also benefit from a few more recent references. ASRASR (talk) 09:49, 11 May 2022 (UTC)
replies: text:  thanks for these explanations, ASRASR - very helpful. Do you happen to have a reference or two at your fingertips that we could use for your statements, such as ? I see the existing text quoted a Swedish publication from Uppsala University which makes it sound like it's widespread and without problems: .EMsmile (talk) 11:06, 16 May 2022 (UTC)

text:  I've also moved the content now to chemical phosphorus removal and just left a short mention and pointer here. I've also mentioned it in the article aluminium sulfate under "uses". EMsmile (talk) 11:06, 16 May 2022 (UTC)
thread_title: Too much detail on alum sulfate treatment recently added?