| Abstract: | Twenty-six (23 traveling and three point) raptor roadside surveys were conducted during a 29,000 km expedition through nine nations of South America. During roadside surveys, we tallied 41 of the 87 (47%) diurnal raptor species (including vultures) that occur in South America. The number of species observed per route varied from 17 in the wet savanna of Venezuela to only two species recorded in the harsh Atacama Desert and the dry montane grasslands of Chile and Peru. Raptor density (non-vultures) varied from 1 per 67 km in the Atacama Desert to more than 1 per km in agricultural areas where caracaras and other species that utilize disturbed habitats were common. Responses of raptor communities to deforestation and other habitat disturbances are discussed. While certain habitat modifications potentially increase raptor abundance and diversity, the alteration of primary forest has the opposite effect, at least on diversity. |
| Genre: | Article |
| ProdID: | 5221816 |
| Citation Author: | Ellis, D.H.; Glinski, R.L.; Smith, D.G. |
| Citation Contributing Office: | Patuxent Wildlife Research Center |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | 106 |
| Citation Issue: | 4 |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | Journal of Raptor Research |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 9 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | 98-106 |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | |
| Citation Series: | |
| Citation Series Code: | |
| Citation Series Number: | |
| Citation Search Results Text: | Raptor road surveys in South America; 1990; Article; Journal; Journal of Raptor Research; Ellis, D.H.; Glinski, R.L.; Smith, D.G. |
| Citation Start Page: | 98 |
| Citation Volume: | 24 |
| Citation Year: | 1990 |
| Type: | citation/reference |
| Text: | Raptor road surveys in South America; 1990; Article; Journal; Journal of Raptor Research; Ellis, D.H.; Glinski, R.L.; Smith, D.G. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DOCUMENT): | http://elibrary.unm.edu/sora/jrr/v024n04/p00098-p00106.pdf |
| Date Other: | Wed, 16 Jun 2010 12:19 -0500 |
| Publisher: | |
