Geology ReportsSearch

USGS · 5230198

A computer program for sample size computations for banding studies

Abstract

Sample sizes necessary for estimating survival rates of banded birds, adults and young, are derived based on specified levels of precision. The banding study can be new or ongoing. The desired coefficient of variation (CV) for annual survival estimates, the CV for mean annual survival estimates, and the length of the study must be specified to compute sample sizes. A computer program is available for computation of the sample sizes, and a description of the input and output is provided.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

K.R. Wilson, J.D. Nichols, J.E. Hines. 1989. A computer program for sample size computations for banding studies. https://pubs.usgs.gov/publication/5230198

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related USGS reports

Genetic differentiation of walleye stocks in Lake St. Clair and western Lake Erie

Allozyme data from six spawning sites of walleyes (Stizostedion vitreum vitreum) in western Lake Erie and two in Lake St. Clair demonstrated significant differences between allelic frequencies in fish from the two lakes. In contrast, differences were only slight between walleyes from different spawning sites within each lake. Of 21 presumptive genetic loci assayed electrophoretically, 4 were polymorphic enough to differentiate the populations. Allelic frequencies differentiating the stocks were stable between year classes, sexes, and sample years, showing that fry hatched in a particular area were returning there to spawn. These findings support other evidence for homing in Great Lakes walleyes.

Fish and Wildlife Technical Report

Dicofol (Kelthane) as an environmental contaminant: A review

Dicofol is persistent in soil and on plants. No compelling evidence exists that dicofol breaks down or is metabolized to DDTr in nature. Dicofol does not accumulate in birds as rapidly as DDE, and it has reproductive effects that are less harmful than DDE. Fish, birds, and mammals are reproductively sensitive to dicofol products, but levels presently found in wildlife are below levels shown experimentally to cause significant harm. Eggs of fish-eating wild birds from citrus, cotton, and apple-growing areas should be analyzed for dicofol residues. Nest success of fish-eating birds in the most contaminated populations should be studied to evaluate the environmental effects of dicofol.

Fish and Wildlife Technical Report