Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Cynthia L. Kester"'
Autor:
Lorrie D. Rea, Carleton R. Bern, Craig A. Stricker, Vicki K. Stegall, Kenneth W. Pitcher, Cynthia L. Kester, Sean D. Farley, Robert O. Rye
Publikováno v:
Canadian Journal of Zoology. 86:17-23
Knowledge of diet–tissue stable isotope discrimination is required to properly interpret stable isotope values and to identify possible diet shifts, such as might be expected from nursing through weaning. This study compared δ13C and δ15Ν οf pa
Publikováno v:
Oecologia. 144:607-617
We used feathers of known origin collected from across the breeding range of a migratory shorebird to test the use of isotope tracers for assigning breeding origins. We analyzed deltaD, delta13C, and delta15N in feathers from 75 mountain plover (Char
Publikováno v:
Journal of Mammalogy. 85:995-1001
Although hoary bats (Lasiurus cinereus) are presumed to be migratory and capable of long-distance dispersal, traditional marking techniques have failed to provide direct evidence of migratory movements by individuals. We measured the stable hydrogen
Publikováno v:
Environmental Geology. 43:606-613
Stable sulfur and oxygen isotope ratios and naturally occurring 35SSO4 activities were used to examine sulfate sources, address the role of sulfur dynamics, and estimate residence times of atmospherically derived sulfate in Loch Vale Watershed, Color
Publikováno v:
Geophysical Research Letters. 28:4483-4486
Building on the discovery of excess 17O in atmospheric sulfate by Lee et al. (2001), we have carried out a case study to determine whether 17O might provide a new tool for quantifying the impact of atmospheric deposition on surface-water sulfate load
Publikováno v:
Atmospheric Environment. 35:3303-3313
Stable sulfur isotope ratios and major ions in bulk snowpack samples were monitored at a network of 52 highelevation sites along and near the Continental Divide from 1993 to 1999. This information was collected to better de"ne atmospheric deposition
Publikováno v:
Isotopes in Environmental and Health Studies. 37:53-65
Sulfur isotopes have received little attention in ecology studies because plant and animal materials typically have low sulfur concentrations (< 1 wt.%) necessitating labor-intensive chemical extraction prior to analysis. To address the potential of
Publikováno v:
Isotopes in environmental and health studies. 39(3)
We evaluated the potential use of stable isotopes to establish linkages between the wintering grounds and the breeding grounds of the Pectoral Sandpiper (Calidris melanotos), the White-rumped Sandpiper (Calidris fuscicollis), the Baird's Sandpiper (C
Publikováno v:
Isotopes in environmental and health studies. 39(2)
White-tailed kite (Elanus leucurus) populations in the 1930s were close to extirpation in the United States. But by the 1940s, an upward trend towards recovery was apparent and continued to their current stable population levels. These dramatic fluct