Upper Midwest Environmental Sciences Center

Nutrients

Filter Total Items: 5
Date published: April 14, 2020
Status: Active

Nutrient Cycling in Aquatic Ecosystems

Nitrogen and phosphorus are plant essential nutrients that are currently in excess in many aquatic ecosystems due to runoff from urban and agricultural areas. In high amounts, these nutrients are detrimental to aquatic ecosystem health, because elevated nutrients promote excessive growth or “blooms” of algae and other nuisance species. Many species that cause blooms can produce toxins which...

Date published: April 14, 2020
Status: Active

Nutrient cycling in agricultural watersheds of the Great Lakes

Nutrient Cycling in Aquatic Ecosystems

Nutrients lost from agricultural areas in watersheds of the Great Lakes cause harmful algal blooms and hypoxia in some areas of the Great Lakes. Substantial efforts are being made in these watersheds to...

Date published: April 14, 2020
Status: Active

Nutrient retention on the Upper Mississippi River Floodplain

Nutrient Cycling in Aquatic Ecosystems

Rivers have a natural capacity to improve water quality when they are connected to their natural floodplains and are not overloaded with sediment and nutrient runoff. Where rivers have been disconnected...

Date published: July 20, 2017
Status: Active

Distribution and Controls Over Habitat and Food Web Structures and Processes in Great Lakes Estuaries

Rivermouth ecosystems, or freshwater estuaries, are the focus of human and wildlife interactions with the Great Lakes. They are highly valued as the region’s urban, industrial, shipping and recreational centers; and home to recreational harbors, wildlife viewing and production, beaches and urban riverfronts. Rivermouths are also both the mixing zones where nutrients from upstream watersheds...

Date published: July 18, 2017
Status: Active

River Productivity

Biological production represents the total amount of living material (biomass) that was produced during a defined period of time. This production is important because some of it is used for food and some is valued for recreation, it is a direct measure of total ecosystem processes, and it sustains biological diversity. Production is a measure of energy flow, and is therefore a natural currency...