Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16731
Hydrologic processes controlling sulfate mobility in a small forested watershed Hydrologic processes controlling sulfate mobility in a small forested watershed
Hydrologic controls on sulfate mobility were investigated in a forested catchment in the Georgia Piedmont using a watershed mass balance approach. Variations in annual sulfate export were governed primarily by differences in runoff rather than by differences in sulfate deposition or in total annual precipitation. However, 2 years with similar total runoff had substantially different...
Authors
Thomas G. Huntington, R. P. Hooper, Brent T. Aulenbach
Diurnal raptors in the fragmented rain forest of the Sierra Imataca, Venezuela Diurnal raptors in the fragmented rain forest of the Sierra Imataca, Venezuela
The rain forest of the Sierra Imataca in eastern Venezuela has been subjected to extensive deforestation for pastures and agricultural settlements. In the last decade the opening of access roads combined with intensified logging and mining activities have fragmented a significant portion of the remaining forest. We noted local distribution and habitat use for 40 species of diurnal...
Authors
E. Alvarez, D. H. Ellis, D.G. Smith, C.T. LaRue
Sediment mixing-depths on a low-energy reflective beach Sediment mixing-depths on a low-energy reflective beach
No abstract available.
Authors
D.J. Sherman, K.F. Nordstrom, N.L. Jackson, J.R. Allen
Hurricane Andrew's impact on freshwater resources Hurricane Andrew's impact on freshwater resources
No abstract available.
Authors
C. T. Roman, N.G. Aumen, Joel Trexler, R.J. Fennema, W.F. Loftus, M. A. Soukup
Herbivory on shoalgrass by wintering redheads in Texas Herbivory on shoalgrass by wintering redheads in Texas
An estimated 80% of redheads (Aythya americana) winter on the Laguna Madre of south Texas and Mexico and feed almost exclusively on shoalgrass (Halodule wrightii) rhizomes. Shoalgrass abundance has decreased by 60% over the past 30 years, and because the effects of shoalgrass loss on wintering redheads are unknown, we initiated a study to define habitat selection criteria and document...
Authors
Christine A. Mitchell, Thomas W. Custer, Phillip J. Zwank
Metals in diet of Bering Sea walrus: Mya sp. as a possible transmitter of elevated cadmium and other metals Metals in diet of Bering Sea walrus: Mya sp. as a possible transmitter of elevated cadmium and other metals
Elevated levels of cadmium in Pacific walrus (Odobenus rosmarus divergens) and northern fur seals (Callorhinus ursinus) have been reported in populations from the Bering Sea (Goldblatt & Anthony, 1983; Taylor et al., 1989). Russian and US authorities are concerned because of the possible health hazards from consuming pinniped meat harvested for subsistence peoples. The effects of cadmium...
Authors
A. Keith Miles, Susan Hills
Relation among cytochrome P450, AH-active PCB congeners and dioxin equivalents in pipping black-crowned night-heron embryos Relation among cytochrome P450, AH-active PCB congeners and dioxin equivalents in pipping black-crowned night-heron embryos
Pipping black-crowned night-heron (Nycticorax nycticorax) embryos were collected from a relatively uncontaminated site (next to Chincoteague National Wildlife Refuge, VA) and three polluted sites (Cat Island, Green Bay, Lake Michigan, WI; Bair Island, San Francisco Bay, CA; West Marin Island, San Francisco Bay, CA). Hepatic cytochrome P-450-associated monooxygenases and cytochrome P-450...
Authors
Barnett A. Rattner, Jeff S. Hatfield, M. J. Melancon, T. W. Custer, D. E. Tillitt
A single deer stands-off three wolves A single deer stands-off three wolves
The first record of a deer (Odocoileus virginianus) standing off three wolves (Canis lupus) is documented by an aerial observation in northeastern Minnesota.
Authors
Michael E. Nelson, L. David Mech
Old-growth forests and the Puerto Rican parrot Old-growth forests and the Puerto Rican parrot
No abstract available.
Authors
J.M. Meyers
First specimens of sooty shearwater, Newell's shearwater, and white-faced storm-petrel from American Samoa First specimens of sooty shearwater, Newell's shearwater, and white-faced storm-petrel from American Samoa
No abstract available.
Authors
G.S. Grant, P.W. Trail, R. B. Clapp