Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16727
Neotropical migratory breeding bird communities in riparian forests of different widths along the Altamaha River, Georgia Neotropical migratory breeding bird communities in riparian forests of different widths along the Altamaha River, Georgia
-We surveyed riparian forest corridors of different widths along the lower Altamaha River in Georgia in 1993 and 1994 to investigate the relationship between forest corridor width and Neotropical breeding bird community diversity and abundance. Species richness and abundance of three of six focal species increased with increasing forest corridor width. We suggest if Neotropical breeding...
Authors
M.F. Hodges, D.G. Krementz
Trail degradation as influenced by environmental factors: A state-of-the-knowledge review Trail degradation as influenced by environmental factors: A state-of-the-knowledge review
Excerpt: Human use and misuse of land has been causing extensive degradation of the very natural resources on which we depend. National parks, wilderness and other protected natural or semi-natural areas (referred to as natural areas hereafter) represent efforts to preserve our natural heritage from further exploitation. Such areas also provide outstanding recreational, research, and...
Authors
Y.-F. Leung, J. L. Marion
Malocclusion in the jaws of captive bred Arctic wolves Malocclusion in the jaws of captive bred Arctic wolves
Similar abnormalities in the skulls of captive Arctic Wolves (Canis lupus arctos) and a wild Arctic wolf found dead on Ellesmere Island, Canada, in 1986 are described. The malocclusion is likely to be recessively inherited and would be expressed more frequently in association with increased levels of inbreeding. A re-shaping of the skulls may have occurred due to the effects of the...
Authors
N.E. Federoff
Annual survival and cause-specific mortality of white-tailed deer fawns on Mount Desert Island, Maine Annual survival and cause-specific mortality of white-tailed deer fawns on Mount Desert Island, Maine
No abstract available.
Authors
R. Long, A.F. O'Connell, D.J. Harrison
The management of hunting of Anatidae The management of hunting of Anatidae
The objectives of harvest management for members of family Anatidae typically involve the size of the harvested population and the size of the harvest. Hunting regulations are the primary tool used to try to achieve the objectives of harvest management. Informed harvest management thus requires a knowledge of the relationship between hunting regulations and both Anatid abundance and...
Authors
J.D. Nichols, Fred A. Johnson
Chestnut-sided warbler, Dendroica pensylvanica Chestnut-sided warbler, Dendroica pensylvanica
No abstract available.
Authors
C.S. Robbins
Brown creeper, Certhia americana Brown creeper, Certhia americana
No abstract available.
Authors
C.S. Robbins
Henslow's sparrow, Ammodramus henslowii Henslow's sparrow, Ammodramus henslowii
No abstract available.
Authors
D.D. Boone, B.A. Dowell
Maps of difference between ground-water contributions to base flow for the various recurrence intervals and ground-water withdrawals in the Neshaminy Creek basin, Pennsylvania Maps of difference between ground-water contributions to base flow for the various recurrence intervals and ground-water withdrawals in the Neshaminy Creek basin, Pennsylvania
No abstract available.
Authors
C.L. Schreffler, P.H. Bird
Hydrogeology of, and simulation of ground-water flow in, a mantled carbonate-rock system, Cumberland Valley, Pennsylvania Hydrogeology of, and simulation of ground-water flow in, a mantled carbonate-rock system, Cumberland Valley, Pennsylvania
The U.S. Geological Survey conducted a study in a highly productive and complex regolith-mantled carbonate valley in the northeastern part of the Cumberland Valley, Pa., as part of its Appalachian Valleys and Piedmont Regional Aquifer-system Analysis program. The study was designed to quantify the hydrogeologic characteristics and understand the ground-water flow system of a highly...
Authors
D. C. Chichester
Low-flow characteristics of Indiana streams Low-flow characteristics of Indiana streams
Knowledge of low-flow characteristics of streams is essential for management of water resources. Low-flow characteristics are presented for 229 continuous-record, streamflow-gaging stations and 285 partial-record stations in Indiana. Low- flow-frequency characteristics were computed for 210 continuous-record stations that had at least 10 years of record, and flow-duration curves were...
Authors
K. K. Fowler, J.T. Wilson