Eutrophication reduces the nutritional value of phytoplankton in boreal lakes
نویسندگان
چکیده
منابع مشابه
Modelling of the eutrophication process in lakes and reservoirs
A closed, energy-driven, matter-flow loop of nitrogen—phosphorus cycles has been proposed as a fundamental structure for understanding and controlling the eutrophication process in aquatic environments. It consists of 11 storage variables of nitrogen and phosphorus, and 14 transformations which represent observable biochemical reactions and ecological interaction. The mathematical model has bee...
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در این بررسی ابتدا به بررسی ماهیت توزیع خسارات پرداخته میشود و از روش نظریه مقادیر نهایی برای بدست آوردن برآورد ارزش در معرض خطر برای خسارات روزانه بیمه مسئولیت شرکت بیمه ایران استفاده میشود. سپس کارایی نظریه مقدار نهایی در برآورد ارزش در معرض خطر با کارایی سایر روشهای واریانس ، کواریانس و روش شبیه سازی تاریخی مورد مقایسه قرار میگیرد. نتایج این بررسی نشان میدهند که توزیع ،garch شناخته شده مدل...
15 صفحه اولPerspectives on the eutrophication of the Yahara lakes
Lathrop, R.C. 2007. Perspectives on the eutrophication of the Yahara lakes. Lake and Reserv. Manage. 23:345– 365. Eutrophication of the four Yahara lakes—Mendota, Monona, Waubesa, and Kegonsa—near Madison, Wisconsin, has been dramatic since the mid-1800s. For Lake Mendota, the erosion of sediments from higher water levels established by the damming of the lake’s outlet, plus the agricultural ex...
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The management of eutrophication has been impeded by reliance on short-term experimental additions of nutrients to bottles and mesocosms. These measures of proximate nutrient limitation fail to account for the gradual changes in biogeochemical nutrient cycles and nutrient fluxes from sediments, and succession of communities that are important components of whole-ecosystem responses. Erroneous a...
متن کاملPhytoplankton in Virginia Lakes and Reservoirs
This study involves a phytoplankton summer/autumn survey in 46 Virginia lakes and reservoirs during 2010-2012. A total of 307 taxa were identified which included several filamentous and colonial cyanabacteria in bloom concentrations.With the exception of one natural lake, the other sites sampled represent impoundments created decades ago, with the majority presently classified as mesoor eutroph...
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ژورنال
عنوان ژورنال: Environmental Research
سال: 2019
ISSN: 0013-9351
DOI: 10.1016/j.envres.2019.108836