Little Goose Subpopulation Status and Trends

Information and data adapted from Parker, B., T, Rien, B. James, R. Beamesderfer. 2013. Review Draft Columbia Basin White Sturgeon Planning Framework. Portland, Or.

To view all subpopulations in the basin click here

Prior to 2012, the last time the Little Goose Reservoir white sturgeon population was surveyed was in 1997. At that time, the managers estimated that 4,830 white sturgeon were in Little Goose Reservoir. Results from the 1997 survey indicated that the population density, growth, and fitness for the Lower Monumental population were lower than those for the subpopulations in the lower Columbia River reservoirs (i.e., Bonneville Reservoir, The Dalles, and John Day). The existing population consisted of few young fish leading managers to suggest that the population was recruitment-limited. Age-0 index sampling (i.e., evaluation of the population to determine the number of fish that survived through their first year) supported the hypothesis that fish were not surviving through their first year. Information from the assessments that was completed in 2012 will be available in 2013.

Abundance

* Monitoring did not occur during years for which data do not exist.

Density

No data available at this time.

Productivity

* Index value 0 = No recruitment
* For a description of the methods used to estimate the index value that is associated with the number of fish that survive during their first year , please visit Monitoring Method website.

Hatchery Releases

No releases

Harvest

There is no harvest since catch-and-release regulations are in effect for this subpopulation.