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Book Chapters

Browse more than 5,500 book chapters authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.

Filter Total Items: 6151

The Chihuahuan Desert The Chihuahuan Desert

No abstract available at this time
Authors
P.L. Warren, C.R. Schwalbe

Use of detrended correspondence analysis in evaluating factors controlling species composition of periphyton Use of detrended correspondence analysis in evaluating factors controlling species composition of periphyton

Detrended correspondence analysis (DCA) was evaluated for its usefulness in elucidating relationships among samples and among species of periphyton in an oligotrophic stream, and for its effectiveness in displaying major gradients where an experimental gradient (copper) affecting species composition was imposed. It was highly sensitive to differences among samples and consistently...
Authors
Harry V. Leland, James L. Carter

Use of miniroutes and Breeding Bird Survey data to estimate abundance Use of miniroutes and Breeding Bird Survey data to estimate abundance

1. Information on relative abundance is easily obtained and adds greatly to the value of an atlas project. 2. The Breeding Bird Survey (BBS) provides annual counts (birds per 50 roadside stops) that can be used to: (1) map relative abundance by physiographic region within a state or province, (2) map relative abundance on a more local scale by using results from individual routes, or (3)...
Authors
C.S. Robbins, B.A. Dowell
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