Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Peggy H Ostrom"'
Publikováno v:
PLoS ONE, Vol 12, Iss 3, p e0173350 (2017)
Scleractinian coral are experiencing unprecedented rates of mortality due to increases in sea surface temperatures in response to global climate change. Some coral species however, survive high temperature events due to a reduced susceptibility to bl
Externí odkaz:
https://doaj.org/article/36328b6abc364d6daaf703979a0c34d5
Publikováno v:
Biogeochemistry. 152:143-159
Nitrous oxide (N2O) is the third most important long-lived greenhouse gas and agriculture is the largest source of N2O emissions. Curbing N2O emissions requires understanding influences on the flux and sources of N2O. We measured flux and evaluated m
Autor:
Yoshito Chikaraishi, Anne E. Wiley, Sam Rossman, Kaycee E. Morra, Peggy H. Ostrom, Helen F. James
Publikováno v:
Marine Ecology Progress Series. 654:163-175
Stable isotope analyses of archival specimens have revealed trophic declines over the past 150 yr in a growing number of predatory pelagic seabirds that breed in the Hawaiian Islands. However, they have not examined whether isotopic shifts occurred p
Autor:
Anne E. Wiley, Yoshito Chikaraishi, Andre F. Raine, Hasand Gandhi, Jessie Beck, Helen F. James, Sam Rossman, Peggy H. Ostrom, Kaycee E. Morra
Publikováno v:
Oecologia. 189:395-406
We investigated how foraging habits vary among three ecologically distinct wide-ranging seabirds. Using amino acid δ15N proxies for nutrient regime (δ15NPhe) and trophic position (Δδ15NGlu-Phe), we compared Newell’s shearwater (Puffinus newelli
Publikováno v:
Biogeosciences. 15:3873-3882
Soil microbial processes, stimulated by agricultural fertilization, account for 90 % of anthropogenic nitrous oxide ( N2O ), the leading source of ozone depletion and a potent greenhouse gas. Efforts to reduce N2O flux commonly focus on reducing fert
Publikováno v:
Waterbirds. 41:93-100
Isotope data from Hawaiian Petrel (Pterodroma sandwichensis) primaries P1 and P6 were compared to determine whether foraging habits change between the beginning and middle of the nonbreeding season. P6 data did not differ between samples derived from
Autor:
Robert W. Sterner, M. Jake Vander Zanden, Nathaniel E. Ostrom, Aaron T. Fisk, Erin A. Dreelin, Alan D. Steinman, Peggy H. Ostrom, J. Val Klump
Publikováno v:
Limnology and Oceanography. 62:2510-2523
The Laurentian Great Lakes (LGL) constitute one of the largest freshwater systems in the world while providing social and economic value to two powerful nations. The spatial scale of these inland seas falls between two endpoints: small lakes and ocea
Autor:
Anthony D. Weinke, Kateri R. Salk, Peggy H. Ostrom, Nathaniel E. Ostrom, Bopaiah A. Biddanda, Scott T. Kendall
Publikováno v:
Biogeochemistry. 131:303-319
Many lacustrine systems, despite management efforts to control eutrophication, are hypoxic during stratified periods. Hypoxia is a major concern, not only for its impact on aquatic life but also for its potential to stimulate production of the greenh
Autor:
Cathleen Bailey, Elise F. Zipkin, Helen F. James, Peggy H. Ostrom, Sam Rossman, Jay F. Penniman, Fern Duvall, Anne E. Wiley
Publikováno v:
Marine Biology. 166
Quantifying individual specialization and other forms of intraspecific ecological diversity can reveal variation that is critical for evolutionary or behavioral adaption of a species to changing environments. Here, the isotopic niche and degree of in
Publikováno v:
Ecology and Evolution
Isotopic niche has typically been characterized through carbon and nitrogen ratios and most modeling approaches are limited to two dimensions. Yet, other stable isotopes can provide additional power to resolve questions associated with foraging, migr