Zobrazeno 1 - 10
of 176
pro vyhledávání: '"William R Fraser"'
Publikováno v:
Frontiers in Marine Science, Vol 8 (2021)
We evaluated annual and regional variation in the dietary niche of Pygoscelis penguins including the sea ice-obligate Adélie penguin (Pygoscelis adeliae), and sea ice-intolerant chinstrap (Pygoscelis antarcticus) and gentoo (Pygoscelis papua) pengui
Externí odkaz:
https://doaj.org/article/8ad2d208c06b4825b70c2e6af00845c2
Publikováno v:
Ecology and Evolution, Vol 9, Iss 16, Pp 9334-9349 (2019)
Abstract Despite many studies on Adélie penguin breeding phenology, understanding the drivers of clutch initiation dates (CIDs, egg 1 lay date) is limited or lacks consensus. Here, we investigated Adélie penguin CIDs over 25 years (1991–2016) on
Externí odkaz:
https://doaj.org/article/a34133f753f44a2caebb9bffacaaf94a
Autor:
Christie A. Bahlai, Clarisse Hart, Maria T. Kavanaugh, Jeffrey D. White, Roger W. Ruess, Todd J. Brinkman, Hugh W. Ducklow, David R. Foster, William R. Fraser, Hélène Genet, Peter M. Groffman, Stephen K. Hamilton, Jill F. Johnstone, Knut Kielland, Douglas A. Landis, Michelle C. Mack, Orlando Sarnelle, Jonathan R. Thompson
Publikováno v:
Ecosphere, Vol 12, Iss 5, Pp n/a-n/a (2021)
Abstract Ecosystems across the United States are changing in complex and unpredictable ways and analysis of these changes requires coordinated, long‐term research. This paper is a product of a synthesis effort of the U.S. National Science Foundatio
Externí odkaz:
https://doaj.org/article/7a7b79ed6eb44d48aaab9b9c4c640216
Autor:
Hugh Ducklow, Megan Cimino, Kenneth H Dunton, William R Fraser, Russell R Hopcroft, Rubao Ji, Arthur J Miller, Mark D Ohman, Heidi M Sosik
Publikováno v:
BioScience. 72:827-850
The marine coastal region makes up just 10% of the total area of the global ocean but contributes nearly 20% of its total primary production and over 80% of fisheries landings. Unicellular phytoplankton dominate primary production. Climate variabilit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10603929669188dc8720d68a6967fb22
https://doi.org/10.1093/biosci/biac050
https://doi.org/10.1093/biosci/biac050
Autor:
Oscar Schofield, Deborah K. Steinberg, William R. Fraser, Megan A. Cimino, Schuyler C. Nardelli, John A. Conroy
Publikováno v:
Limnology and Oceanography. 66:2234-2250
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a18121a19d4f000d5f3a8969ad05b1e2
https://doi.org/10.1002/lno.11750
https://doi.org/10.1002/lno.11750
Autor:
Hugh W. Ducklow, William R. Fraser, Michael P. Meredith, Sharon E. Stammerjohn, Scott C. Doney, Douglas G. Martinson, Sévrine F. Sailley, Oscar M. Schofield, Deborah K. Steinberg, Hugh J. Venables, Charles D. Amsler
Publikováno v:
Oceanography, Vol 26, Iss 3, Pp 190-203 (2013)
The extent, duration, and seasonality of sea ice and glacial discharge strongly influence Antarctic marine ecosystems. Most organisms' life cycles in this region are attuned to ice seasonality. The annual retreat and melting of sea ice in the austral
Externí odkaz:
https://doaj.org/article/b5d7c8129be8466aa02f5f57be7b2831
Publikováno v:
Frontiers in Marine Science, Vol 8 (2021)
We evaluated annual and regional variation in the dietary niche ofPygoscelispenguins including the sea ice-obligate Adélie penguin (Pygoscelis adeliae), and sea ice-intolerant chinstrap (Pygoscelis antarcticus) and gentoo (Pygoscelis papua) penguins
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a12cf2827889450fd90497f834de6df
Autor:
William R. Fraser, Donna L. Patterson-Fraser, Christine A. Ribic, Oscar Schofield, Hugh Ducklow
Publikováno v:
Oceanography, Vol 26, Iss 3, Pp 207-209 (2013)
A primary research objective of the Palmer Long Term Ecological Research (LTER) program has been to identify and understand the factors that regulate the demography of Adélie penguins (Pygoscelis adeliae). In this context, our work has been focused
Externí odkaz:
https://doaj.org/article/08f714b14d69467f9288e208fbfceead
Publikováno v:
PLoS ONE, Vol 9, Iss 3, p e90081 (2014)
Sexual segregation in vertebrate foraging niche is often associated with sexual size dimorphism (SSD), i.e., ecological sexual dimorphism. Although foraging behavior of male and female seabirds can vary markedly, differences in isotopic (carbon, δ13
Externí odkaz:
https://doaj.org/article/ba46b0db94b44467971deb133879e23a
Autor:
Knut Kielland, Christie A. Bahlai, Jeffrey D. White, Todd J. Brinkman, David R. Foster, Peter M. Groffman, Orlando Sarnelle, Hugh W. Ducklow, Hélène Genet, Douglas A. Landis, Jonathan R. Thompson, Jill F. Johnstone, William R. Fraser, Maria T. Kavanaugh, Clarisse Hart, Stephen K. Hamilton, Michelle C. Mack, Roger W. Ruess
Publikováno v:
Ecosphere, Vol 12, Iss 5, Pp n/a-n/a (2021)
Ecosystems across the United States are changing in complex and unpredictable ways and analysis of these changes requires coordinated, long‐term research. This paper is a product of a synthesis effort of the U.S. National Science Foundation funded
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a38194b42a4781e0b00164a5ffe3951
https://doaj.org/article/7a7b79ed6eb44d48aaab9b9c4c640216
https://doaj.org/article/7a7b79ed6eb44d48aaab9b9c4c640216