Fish sampling

USGS scientist Brent Knights conducting fish sampling on the Upper Mississippi River.

Detailed Description

USGS scientist Brent Knights conducting fish sampling on the Upper Mississippi River. 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 for ecosystems. A sound understanding of biological production is essential to the effective science-based management of ecosystems.

Details

Image Dimensions: 2172 x 1248

Date Taken:

Location Taken: US