Publications
Filter Total Items: 2076
Repeated use of ion-exchange resin membranes in calcareous soils Repeated use of ion-exchange resin membranes in calcareous soils
This study compared the consistency of nutrient extraction among repeated cycles of ion-exchange resin membrane use. Two sandy calcareous soils and different equilibration temperatures were tested. No single nutrient retained consistent values from cycle to cycle in all treatments, although both soil source and temperature conferred some influence. It was concluded that the most...
Authors
S. K. Sherrod, Jayne Belnap, M. E. Miller
New proposed national resources inventory protocols on nonfederal rangelands New proposed national resources inventory protocols on nonfederal rangelands
No abstract available.
Authors
K.E. Spaeth, F.B. Pierson, J. E. Herrick, P. Shaver, David A. Pyke, Mike Pellant, D. Thompson, B. Dayton
Composition, complexity, and tree mortality in riparian forests in the central Western Cascades of Oregon Composition, complexity, and tree mortality in riparian forests in the central Western Cascades of Oregon
Riparian forests contribute to the diversity and function of both terrestrial and aquatic ecosystems. To assess some of these contributions, we compared tree composition, stand complexity, and temporal patterns of tree mortality on permanent plots in seven mature and old-growth stands representing upland forests and forests along low- and mid-order streams in the Western Cascade Range of...
Authors
Steve A. Acker, S.V. Gregory, G. Lienkaemper, W.A. McKee, F. J. Swanson, S.D. Miller
Crater Lake: blue through time Crater Lake: blue through time
Blue is the color of constancy, hence the term true blue. The unearthly blueness of Crater Lake reflects its pristine character and gives scientists a focal point for studying human impacts on aquatic environments over long periods of time. Scientists with the U.S. Geological Survey (USGS), National Park Service, and Oregon State University have systematically studied the lake for the...
Authors
Gary L. Larson, Mark Buktenica, Robert Collier
American kestrel (Falco sparverius) American kestrel (Falco sparverius)
No abstract available.
Authors
Charles J. Henny
Cooper's hawk (Accipter cooperii) Cooper's hawk (Accipter cooperii)
No abstract available.
Authors
Charles J. Henny
Osprey (Pandion haliaetus) Osprey (Pandion haliaetus)
No abstract available.
Authors
Charles J. Henny
Transitions in rangeland evaluations: A review of the major transitions in rangeland evaluations during the last 25 years and speculation about future evaluations Transitions in rangeland evaluations: A review of the major transitions in rangeland evaluations during the last 25 years and speculation about future evaluations
No abstract available.
Authors
David A. Pyke, Jeffrey E. Herrick
Parentage and relatedness in polyandrous comb-crested jacanas using ISSRs Parentage and relatedness in polyandrous comb-crested jacanas using ISSRs
In this article we present the first analysis of parentage and relatedness in a natural vertebrate population, using Intersimple Sequence Repeat (ISSR) markers. Thus, 28 ISSR markers were used in a study of a sex-role reversed, simultaneously polyandrous shorebird from northeastern Australia, the comb-crested jacana (Irediparra gallinacea). Assessment of parentage was based on comparison...
Authors
Susan M. Haig, Terrence R. Mace, Thomas D. Mullins
A comparison of bat activity at low and high elevations in the Black Hills of western Washington A comparison of bat activity at low and high elevations in the Black Hills of western Washington
We examined the differences in activity patterns and community structure of bats between low (
Authors
J. Erickson, M. J. Adams
The American Avocet (Recurvirostra americana) The American Avocet (Recurvirostra americana)
No abstract available.
Authors
P.M. Sanzenbacher, Susan M. Haig
Gyrfalcon diet in central west Greenland during the nestling period Gyrfalcon diet in central west Greenland during the nestling period
We studied food habits of Gyrfalcons (Falco rusticolus) nesting in central west Greenland in 2000 and 2001 using three sources of data: time-lapse video (3 nests), prey remains (22 nests), and regurgitated pellets (19 nests). These sources provided different information describing the diet during the nesting period. Gyrfalcons relied heavily on Rock Ptarmigan (Lagopus mutus) and arctic...
Authors
Travis Booms, Mark R. Fuller