Publications
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A comparison of avian hematozoan epizootiology in two California coastal scrub communities A comparison of avian hematozoan epizootiology in two California coastal scrub communities
Passerine birds within two California (USA) coastal scrub ecosystems, an island and a mainland site, were examined for hematozoa from 1984 to 1990. Island birds had a significantly lower hematozoan prevalence than mainland birds. This prevalence difference can be related to a lack of appropriate hematozoan vectors on the island. Haemoproteus spp. and Leucocytozoon spp. were the most...
Authors
Paul E. Super, Charles van Riper
Have desert tortoises (Gopherus agassizii) undergone a long-term decline in abundance? Have desert tortoises (Gopherus agassizii) undergone a long-term decline in abundance?
No abstract available.
Authors
R. Bruce Bury, P.S. Corn
Vine maple clone growth and reproduction in managed and unmanaged coastal Oregon Douglas-fir forests Vine maple clone growth and reproduction in managed and unmanaged coastal Oregon Douglas-fir forests
Vine maple (Acer circinatum Pursh.) clone development, expansion, and regeneration by seedling establishment were studied in 5-240 yr old managed and unmanaged Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stands in coastal Oregon. Stem length, number of stems, and crown area were all significantly (P ≤ 0.01) related to stand age, and clone development was most rapid during the...
Authors
Mary E. O’Dea, John C. Zasada, John C. Tappeiner
Limnology of isolated and connected high-mountain lakes in Olympic National Park, Washington State, USA Limnology of isolated and connected high-mountain lakes in Olympic National Park, Washington State, USA
No abstract available.
Authors
Gary L. Larson, C. D. McIntire, C. Hawkins-Hoffman
Population diversity with special reference to rangeland plants Population diversity with special reference to rangeland plants
No abstract available.
Authors
David A. Pyke
Survival and population size estimation in raptor studies: A comparison of two methods Survival and population size estimation in raptor studies: A comparison of two methods
ABSTRACT.--The Jolly-Seber model is a capture-recapture model that can provide less-biased survival and population size estimates than those produced from simple counting procedures. Parameter estimation by simple counts and Jolly-Seber methods are based on certain assumptions that directly determine the validity of estimates. Evuluation of assumptions for parameter estimation is a focus...
Authors
William R. Gould, Mark R. Fuller
The use of satellite systems for the study of bird migration The use of satellite systems for the study of bird migration
The Argos satellite system, with two or more polar-orbiting satellites, provides the basis for receiving radio signals from transmitters and for estimating locations of those transmitters anywhere around the earth. We briefly relate the development of platform-transmitter terminals small enough to be placed on birds, but powerful enough to send signals to the satellites. We review the...
Authors
Mark R. Fuller, W. Seegar, Paul Howey
Alien species in national parks: Drawing lines in space and time Alien species in national parks: Drawing lines in space and time
No abstract available.
Authors
D. Houston, Edward G. Schreiner
Ebb and flow of encroachment by nonnative rainbow trout in a small stream in the southern Appalachian Mountains Ebb and flow of encroachment by nonnative rainbow trout in a small stream in the southern Appalachian Mountains
Brook trout Salvelinus fontinalis is the native salmonid species of streams in the southern Appalachian Mountains. The present distribution of this species, once widespread from headwaters to lower reaches of large streams, is restricted to mostly headwater areas. Changes in the distribution of native brook trout in the presence of' nonnative rainbow trout Oncorhynchus mykiss have been...
Authors
Gary L. Larson, S. E. Moore
Competitive relations between Douglas-fir and Pacific madrone on shallow soils in a Mediterranean climate Competitive relations between Douglas-fir and Pacific madrone on shallow soils in a Mediterranean climate
A large area of Pacific Coast forests is characterized by shallow soil, with negligible rainfall in the growing season. This study explores water-seeking strategy on such a site. We studied availability of bedrock water and its effects on growth and ecophysiology of 11-yr-old planted Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) and sprouting Pacific madrone (Arbutus menziesii Pursh...
Authors
Zheng Q. Wang, M. Newton, J. C. Tappeiner
Characteristics of mineral licks used by white-tailed deer (Odocoileus virginianus) Characteristics of mineral licks used by white-tailed deer (Odocoileus virginianus)
Characteristics of mineral licks used by white-tailed deer (Odocoileus virginianus) were examined in the northern Black Hills of South Dakota in May 1992. Concentrations of sodium, nitrogen, phosphorus, potassium, calcium, chloride and magnesium, and soil texture, organic matter and pH for licks and nonlick soils were compared. Black Hills lick and nonlick samples also were compared to...
Authors
John F. Kennedy, Jonathan A. Jenks, Robert L. Jones, Kurt J. Jenkins
Landscape characteristics of fragmented shrubsteppe habitats and breeding passerine birds Landscape characteristics of fragmented shrubsteppe habitats and breeding passerine birds
We examined the influence of local and landscape-level attributes of fragmented habitats in shrubsteppe habitats on the breeding distributions of Sage (Amphispiza belli) and Brewer's (Spizella breweri) Sparrows, Sage Thrashers (Oreoscoptes montanus), Horned Larks (Eremophila alpestris), and Western Meadowlarks (Sturnella neglecta) in the Snake River Plains of southwestern Idaho. We...
Authors
Steven T. Knick, J.T. Rotenberry