| Abstract: | The route-regression method has been used in recent years to analyze data from roadside surveys. With this method, a population trend is estimated for each route in a region, then regional trends are estimated as a weighted mean of the individual route trends. This method can accurately incorporate data that is unbalanced by changes in years surveyed and observer differences. We suggest that route-regression methodology is most efficient in the estimation of long-term (>5 year) trends, and tends to provide conservative results for low-density species. |
| Genre: | Federal Government Series |
| ProdID: | 5210658 |
| Citation Author: | Geissler, P.H.; Sauer, J.R. |
| Citation Contributing Office: | Patuxent Wildlife Research Center |
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| Citation Editor: | Sauer, J.R.; Droege,S. (editors) |
| Citation End Page: | 57 |
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| Citation Language: | English |
| Citation Larger Work Title: | Survey Designs and Statistical Methods for the Estimation of Avian Population Trends |
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| Citation Phsyical Description: | v, 166 |
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| Citation Public Comments: | PDF on file: see 3990_Sauer.pdf 9.5 MB |
| Citation Publisher: | U.S. Fish and Wildlife Service |
| Citation Series: | Biological Report |
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| Citation Search Results Text: | Topics in route-regression analysis; 1990; Federal Government Series; Survey Designs and Statistical Methods for the Estimation of Avian Population Trends; Geissler, P.H.; Sauer, J.R. |
| Citation Start Page: | 54 |
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| Citation Year: | 1990 |
| Type: | citation/reference |
| Text: | Topics in route-regression analysis; 1990; Federal Government Series; Survey Designs and Statistical Methods for the Estimation of Avian Population Trends; Geissler, P.H.; Sauer, J.R. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Tue, 9 Jun 2009 09:23 -0500 |
| Publisher: | U.S. Fish and Wildlife Service |
