Evaluation of a Habitat Capability Model for Nongame Birds in the Black Hills, South Dakota
Author: Todd R. Mills
Publisher:
Published: 1996
Total Pages: 36
ISBN-13:
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Author: Todd R. Mills
Publisher:
Published: 1996
Total Pages: 36
ISBN-13:
DOWNLOAD EBOOKAuthor: Mark A. Rumble
Publisher:
Published: 1999
Total Pages: 20
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DOWNLOAD EBOOKHabitat models have considerable economic effects on management decisions and are used to predict consequences of land management decisions on wildlife. The Black Hills National Forest uses the habitat capability model (HABCAP), but its accuracy relative to resident wintering bird populations is largely unknown. We tested the model's predictive accuracy for resident nongame birds wintering in 11 vegetation structural stages of ponderosa pine, quaking aspen/paper birch, and meadows in the Black Hills, South Dakota. Six species, hairy woodpecker, gray jay, black-capped chickadee, white-breasted nuthatch, red-breasted nuthatch, and dark-eyed junco, had HABCAP coefficients for vegetation structural stages during winter. Red crossbills were not previously included in the model, so we developed HABCAP coefficients for them. Predicted abundance of winter birds in vegetation structural stages based on HABCAP coefficients differed from observed abundance for gray jays, black-capped chickadees, white-breasted nuthatches, red-breasted nuthatches, and dark-eyed juncos. HABCAP coefficients were modified to reflect observed abundance patterns of birds. These changes to HABCAP coefficients should provide managers with more appropriate estimates of land management impacts on nongame birds wintering in the Black Hills.
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Publisher:
Published: 1999
Total Pages: 550
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DOWNLOAD EBOOKAuthor: Claudia M. Regan
Publisher:
Published: 1998
Total Pages: 546
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DOWNLOAD EBOOKVegetation at the Glacier Lakes Ecosystem Experiment Site, a 600 ha research site at 3200 to 3500 m elevation in the Snowy Range of southeastern Wyoming, was categorized and described from an intensive sampling of species abundances. A total of 304 vascular plant taxa were identified through collection and herbarium documentation. Plots with tree species were separated from those without tree species for ordination and classification analyses. Detrended correspondence analysis was used to order plots along major axes of composition variation, which are inferred moisture and topographic gradients. Cluster analysis was used to categorize plots based on composition similarity. The resulting groups were named according to species dominants. We identified and described in detail 4 meadow, 4 thicket or scrub, 3 krummholz, and 2 forest plant associations.
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Publisher:
Published: 1998
Total Pages: 888
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Published: 1994
Total Pages: 296
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DOWNLOAD EBOOKAuthor: Gregory S. Bevenger
Publisher:
Published: 1995
Total Pages: 280
ISBN-13:
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