Get Eutrophication Pogil Answers

Answer & Explanation Biological Oxygen Demand is said to the amount of oxygen that is needed to remove the organic waste from the water when consumed by the bacteria. With the course of time there is an increase in the number and use oxygen from the water.

Decomposition uses oxygen, causing oxygen depletion at the bottom of the lake. All the organisms in the food web, from zooplankton to crustaceans, insects, frogs, and fish, need oxygen to live, so they are excluded from the oxygen-depleted zones of the lake and their vitality is naturally constrained.

Populations of aquatic organisms are sensitive to changes in the frequency, duration, and timing of extreme precipitation events, such as floods or droughts. Changes in the seasonal timing of snowmelt will alter stream flows, potentially interfering with the reproduction of many aquatic species. Aquatic ecosystems & Global climate change - The Pew Charitable Trusts pewtrusts.org https://.pewtrusts.org › legacy › protecting_ocean_life pewtrusts.org https://.pewtrusts.org › legacy › protecting_ocean_life

If you could travel millions of years back in time, the land masses on Earth would not look like they do today. Huge areas were covered in swampy, marsh-like conditions. Today, many of those previously wet areas are now dry land.

The known consequences of cultural eutrophication include blooms of blue-green algae (i.e., cyanobacteria, Figure 2), tainted drinking water supplies, degradation of recreational opportunities, and hypoxia. Causes, Consequences, and Controls in Aquatic Ecosystems Nature https://.nature.com › scitable › knowledge › library Nature https://.nature.com › scitable › knowledge › library

Eutrophication occurs when a body of water receives an excessive nutrient load, particularly phosphorus and nitrogen. This often results in an overgrowth of algae. As the algae die and decompose, oxygen is depleted from the water, and this lack of oxygen in the water causes the death of aquatic animals, like fish. Eutrophication | U.S. Geological Survey usgs.gov https://.usgs.gov › centers › science › science-topics usgs.gov https://.usgs.gov › centers › science › science-topics

Eutrophication increases primary production and changes the relative abundance, taxonomic composition and spatial distribution of primary producers within an aquatic ecosystem. The changes in composition and location of resources alter the distribution and flow of energy and biomass throughout the food web.