USGS - science for a changing world

Upper Midwest Environmental Sciences Center

Home/ Overview/ Science Programs/ Data Library/ Products and Publications/States/ Rivers/Teachers and Students/ Links/ Contact/ Search
folder.gif Long Term Resource Monitoring Program
     Fisheries Data - Graphical Fish Database Browser

About the LTRMP Fish ComponentHelp using Fish Database Browser


Query for Frequency of Occurrence

Choose Gear:

Choose Species:

Year Range:   to



*Note for more information on specific gears, click on link.

Frequency occurrence is a measure of species ubiquity and is portrayed as a time series. The metric is calculated as the percent of Long Term Resource Monitoring Program samples containing at least one individual of any given species.


About the LTRMP Fish Component | Help Page | Catch Per Unit of Effort | Proportional Stock Density
Frequency of Occurrence | Species List | Community Composition | Species Richness

Photographs taken by David Ostendorf

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.umesc.usgs.gov/data_library/fisheries/graphical/freqoc.shtml
Page Contact Information: Contacting the Upper Midwest Environmental Sciences Center
Page Last Modified: October 2, 2007