Publications
Filter Total Items: 1999
Impacts of the Brown Tree Snake: Patterns of Decline and Species Persistence in Guam's Avifauna
Predation by brown tree snakes (Boiga irregularis ) devastated the avifauna of Guam in the Mariana Islands during the last half of the twentieth century, causing the extirpation or serious reduction of most of the island's 25 resident bird species. Past studies have provided qualitative descriptions of the decline of native forest birds but have not considered all species or presented quantitative
Authors
G.J. Wiles, J. Bart, R.E. Beck, C.F. Aguon
Effects of soil amendments on germination and emergence of downy brome (Bromus tectorum) and Hilaria jamesii
Downy brome is an introduced Mediterranean annual grass that now dominates millions of hectares of western U.S. rangelands. The presence of this grass has eliminated many native species and accelerated wildfire cycles. The objective of this study was to identify soil additives that allowed germination but inhibited emergence of downy brome, while not affecting germination or emergence of the nativ
Authors
J. Belnap, S. K. Sherrod, M. E. Miller
Management implications of the ecology of free-roaming horses in semiarid ecosystems of the western United States
Compared to other ungulates of North America, free-roaming horses (Equus caballus) possess a unique evolutionary history that has given rise to a distinct suite of behavioral, morphological, and physiological traits. Because of their unique combination of cecal digestion, an elongate head with flexible lips, and non-uniform use of the landscape, horses represent a unique disturbance agent in semi-
Authors
Erik Beever
The Willet (Catoptrophorus semipalmatus)
No abstract available.
Authors
P.M. Sanzenbacher, Susan M. Haig
Birds of Oregon: A general reference
Birds of Oregon is the first complete reference work on Oregon's birds to be published since Gabrielson and Jewett's landmark book in 1940. This comprehensive volume includes individual accounts of the approximately 500 species now known to occur in Oregon (about 150 more than in 1940), including detailed accounts of the 353 species that regularly occur and briefer accounts of another 133 species
The American Avocet (Recurvirostra americana)
No abstract available.
Authors
P.M. Sanzenbacher, Susan M. Haig
Food habits of the southwestern willow flycatcher during the nesting season
The food habits and prey base of the endangered Southwestern Willow Flycatcher (Empidonax traillii extimus) are not well known. We analyzed prey remains in 59 fecal samples from an intensively-studied population of this flycatcher at the Kern River Preserve in southern California. These samples were collected during the nesting season in 1996 and 1997 from adults caught in mist nets, and from nest
Authors
Charles A. Drost, Eben H. Paxton, Mark K. Sogge, Mary J. Whitfield