Eutrophic Lakes Ava Sheahan

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Presentation transcript:

Eutrophic Lakes Ava Sheahan https://www.worldatlas.com/articles/what-are-oligotrophic-mesotrophic-and-eutrophic-lakes.html Eutrophic Lakes Ava Sheahan

Productivity The nutrient rich (mostly nitrogen and phosphorus) supports many plants and plankton A lot of oxygen is produced by the plants and used by lake fauna

Major Life Forms Phytoplankton Bacteria Aquatic plants Warm water fish species In more eutrophic areas: carp In less eutrophic areas: bass, pike, perch, and panfish

Abiotic Limiting Factors Amount of nutrients in the water (large amounts of nutrients leads to increase in algae population which can lead to an increase in water pH; nutrients in large amounts can also be toxic) Amount of dissolved oxygen in water (anoxic seasons lead to fishkills, and there will be different species of fish depending on where the oxygen is) Temperature Available sunlight

Special Features Lakes can become eutrophic from human activity Frequent toxic blooms https://pdfs.semanticscholar.org/presentation/0616/906fad05c8718c8bfa8928c6cc85590401fa.pdf

Plant Adaptations Surface plants have bigger leaves to receive sunlight and longer roots to avoid being washed away

Animal Adaptations Fish normally need less oxygen Things to feel through murky water like barbels

Sources "Eutrophication." Open.edu, 2016, www.open.edu/openlearn/ocw/mod/oucontent/view.php?printable=1&id=2317. "Freshwater Ecosystems." semanticscholar.org, pdfs.semanticscholar.org/presentation/0616/906fad05c8718c8bfa8928c6cc85590401f a.pdf Lake Trophic States. RMBEL, www.rmbel.info/primer/lake-trophic-states-2/. Nag, Oishimaya Sen, editor. "What Are Oligotrophic, Mesotrophic, And Eutrophic Lakes?" Worldatlas.com, www.worldatlas.com/articles/what-are-oligotrophic-mesotrophic- and-eutrophic-lakes.html. Accessed 25 Apr. 2017. New Hampshire Department of Environmental Services. Environmental Fact Sheet: Lake Eutrophication. Concord, NH, 2010. www.des.nh.gov, www.des.nh.gov/organization/commissioner/pip/factsheets/bb/documents/bb-3.pdf. "Nutrients in Lakes and Streams." Water Encyclopedia, www.waterencyclopedia.com/Mi- Oc/Nutrients-in-Lakes-and-Streams.html.