Population densities and community structure of birds in Jackson Hole - A reassessment after 25 years
Authors(s): M. Cody
Publication:
Publisher:
Publication Date: 0000-00-00
Type: annual report
Location:
Abstract: Objectives Compare bird densities and species composition in 2 habitats in GTNP willows and grass-sage, 1966 data with 1991-92 data. Findings and Status 1. In general, long-term variations no greater than year to year variations. 2. Willow wetter now, but to more beavers and 3. Changes in willows habitat tracked by changes in birds, but 4. Some SPP are inexplicably scarcer now than 25 years ago.
Keywords: animal , bird, Aves, ornithology, migrant bird, songbird, population, habitat, Grand Teton National Park, Jackson Hole, Teton County, chipping sparrow, starling, Sturnus vulgaris, Spizella passerina, Emberizidae
| BIBLIOGRAPHY ID | 1236 |
| REF TYPE | Report |
| AUTHORS | M. Cody |
| PUB DATE | 0000-00-00 |
| DATE STR | 0000-00-00 |
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| DOC TITLE | Population densities and community structure of birds in Jackson Hole - A reassessment after 25 years |
| PAGE DESC | 55 |
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| ACADEMIC DEPT | |
| UNIVERSITY | |
| DOC TYPE | annual report |
| PUB VOLUME | 4165 |
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| PUB EDITION | |
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| KEYWORDS | animal , bird, Aves, ornithology, migrant bird, songbird, population, habitat, Grand Teton National Park, Jackson Hole, Teton County, chipping sparrow, starling, Sturnus vulgaris, Spizella passerina, Emberizidae |
| ABSTRACT | Objectives
Compare bird densities and species composition in 2 habitats in GTNP willows and grass-sage, 1966 data with 1991-92 data.
Findings and Status
1. In general, long-term variations no greater than year to year variations.
2. Willow wetter now, but to more beavers and
3. Changes in willows habitat tracked by changes in birds, but
4. Some SPP are inexplicably scarcer now than 25 years ago. |
| NOTES | |
| URLADDRESS | http://science.nature.nps.gov/servlet/Prmt_ReportSearchView?REPORT_ID=4165 |
| COPYRIGHT | |
Posted on
Sun, July 31, 2011
by Beringia South