Search Results - "SINIFF, Donald B"

Factors affecting stroking patterns and body angle in diving Weddell seals under natural conditions by Sato, Katsufumi, Mitani, Yoko, Cameron, Michael F, Siniff, Donald B, Naito, Yasuhiko

“…Aquatic animals use a variety of strategies to reduce the energetic cost of locomotion. Efficient locomotion is particularly important for breath-holding…”
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History and fate of a small isolated population of Weddell seals at White Island, Antarctica by Gelatt, Thomas S, Davis, Corey S, Stirling, Ian, Siniff, Donald B, Strobeck, Curtis, Delisle, Isabelle

“…Weddell seals (Leptonychotes weddellii Lesson) at White Island, Antarctica form a small, completely enclosed, natural population hypothesized to be of recent…”
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A phylogeny of the extant Phocidae inferred from complete mitochondrial DNA coding regions by Davis, Corey S., Delisle, Isabelle, Stirling, Ian, Siniff, Donald B., Strobeck, Curtis

“…Despite extensive interest in the systematics of Pinnipedia, questions remain concerning phylogenetic relationships within the Phocidae or “true” seals…”
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Life history plasticity and population regulation in sea otters by Monson, Daniel H., Estes, James A., Bodkin, James L., Siniff, Donald B.

“…We contrasted body condition, and age-specific reproduction and mortality between a growing population of sea otters (Enhydra lutris) at Kodiak Island and a…”
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An apparent population decrease, or change in distribution, of Weddell seals along the Victoria Land coast by Ainley, David G., Larue, Michelle A., Stirling, Ian, Stammerjohn, Sharon, Siniff, Donald B.

“…Ground counts during 1959–1968 compared with counts using high resolution (0.6 m2) satellite imagery during 2008–2012 indicated many fewer Weddell seals…”
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A method for reconstructing three-dimensional dive profiles of marine mammals using geomagnetic intensity data: results from two lactating Weddell seals by MITANI, Yoko, SATO, Katsufumi, ITO, Shinichiro, CAMERON, Michael F, SINIFF, Donald B, NAITO, Yasuhiko

“…The under-ice behavior of two free-ranging female Weddell seals (Leptonychotes weddellii) was studied using geomagnetic, acceleration and velocity sensors at…”
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Antarctic fisheries: factor climate change into their management by Brooks, Cassandra M., Ainley, David G., Abrams, Peter A., Dayton, Paul K., Hofman, Robert J., Jacquet, Jennifer, Siniff, Donald B.

“…Environmental pressures and overfishing might soon push some species to the brink, warn Cassandra Brooks and colleagues. Environmental pressures and…”
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Satellite imagery can be used to detect variation in abundance of Weddell seals (Leptonychotes weddellii) in Erebus Bay, Antarctica by LaRue, Michelle A., Rotella, Jay J., Garrott, Robert A., Siniff, Donald B., Ainley, David G., Stauffer, Glenn E., Porter, Claire C., Morin, Paul J.

“…The Weddell seal population in Erebus Bay, Antarctica, represents one of the best-studied marine mammal populations in the world, providing an ideal test for…”
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Deep foraging dives in relation to the energy depletion of Weddell seal (Leptonychotes weddellii) mothers during lactation by SATO, Katsufumi, MITANI, Yoko, CAMERON, Michael F, SINIFF, Donald B, WATANABE, Yuuki, NAITO, Yasuhiko

“…We examined the behavioral adaptations of Weddell seals (Leptonychotes weddellii) that may help them to compensate for decreasing energy stores during…”
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Environmental variation and cohort effects in an Antarctic predator by Garrott, Robert A., Rotella, Jay J., Siniff, Donald B., Parkinson, Claire L., Stauffer, Glenn E.

“…Understanding the potential influence of environmental variation experienced by animals during early stages of development on their subsequent demographic…”
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Age-specific recruitment and natality of California sea lions at San Miguel Island, California by Melin, Sharon R., Laake, Jeffrey L., DeLong, Robert L., Siniff, Donald B.

“…We conducted a 15 yr mark‐resight study of branded California sea lions (Zalophus californianus) at San Miguel Island, California, to estimate age‐specific…”
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Fishing for Data in the Ross Sea by Sills, Jennifer, BLIGHT, LOUISE K., AINLEY, DAVID G., ACKLEY, STEPHEN F., BALLARD, GRANT, BALLERINI, TOSCA, BROWNELL, ROBERT L., CHENG, C.-H. CHRISTINA, CHIANTORE, MARIACHIARA, COSTA, DANIEL, COULTER, MALCOLM C., DAYTON, PAUL, DEVRIES, ARTHUR L., DUNBAR, ROBERT, EARLE, SYLVIA, EASTMAN, JOSEPH T., EMSLIE, STEVEN D., EVANS, CLIVE W., GARROTT, ROBERT A., KIM, STACY, KOOYMAN, GERALD, LESCROËL, AMÉLIE, LIZOTTE, MICHAEL, MASSARO, MELANIE, OLMASTRONI, SILVIA, PONGANIS, PAUL J., RUSSELL, JOELLEN, SINIFF, DONALD B., SMITH, WALKER O., STEWART, BRENT S., STIRLING, IAN, WILLIS, JAY, WILSON, PETER, WOEHLER, ERIC J.

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Exploring Linkages between Abiotic Oceanographic Processes and a Top-trophic Predator in an Antarctic Ecosystem by Proffitt, Kelly M, Garrott, Robert A, Rotella, Jay J, Siniff, Donald B, Testa, J. Ward

“…Climatic variation affects the physical and biological components of ecosystems, and global-climate models predict enhanced sensitivity in polar regions,…”
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An Overview of the Ecology of Antarctic Seals by Siniff, Donald B.

“…Four species of seals occupy the pack-ice region of the oceans surrounding the Antarctic Continent. These seals include the crabeater (Lobodon carcinophagus),…”
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Activity Patterns and Time Budgets of the Declining Sea Otter Population at Amchitka Island, Alaska by Gelatt, Thomas S., Siniff, Donald B., Estes, James A.

“…Time budgets of predators may reflect population status if time spent foraging varies with local prey abundance. We assumed that the sea otter (Enhydra lutris)…”
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Watch over Antarctic waters by Brooks, Cassandra

“…Cumulative impacts of historical and current fishing combined with environmental change have been linked to declines in populations of Chinstrap4 and Gentoo…”
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MOLECULAR EVIDENCE FOR TWINNING IN WEDDELL SEALS ( LEPTONYCHOTES WEDDELLII ) by Gelatt, Thomas S., Davis, Corey S., Siniff, Donald B., Strobeck, Curtis

“…We used microsatellite genotyping to determine the genetic relatedness of 7 apparent twin dyads of Weddell seals (Leptonychotes weddellii) born in McMurdo…”
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NOCTURNAL ENCOUNTERS BETWEEN KIT FOXES by White, P. J., Ralls, Katherine, Siniff, Donald B.

“…Kit foxes (Vulpes macrotis) are nocturnal, monogamous, and territorial. We used telemetry to monitor nocturnal interactions of pair members with each other and…”
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How overfishing a large piscine mesopredator explains growth in Ross Sea penguin populations: A framework to better understand impacts of a controversial fishery by Ainley, David G., Crockett, Elizabeth L., Eastman, Joseph T., Fraser, William R., Nur, Nadav, O’Brien, Kristin, Salas, Leo A., Siniff, Donald B.

“…We herein review the modeling approach of Pinkerton et al. (2016, Ecol. Modelling), who tested the hypothesis that fishery depletion of large, neutrally…”
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MOLECULAR EVIDENCE FOR TWINNING IN WEDDELL SEALS (LEPTONYCHOTES WEDDELLII) by Gelatt, Thomas S., Davis, Corey S., Siniff, Donald B., Strobeck, Curtis

“…We used microsatellite genotyping to determine the genetic relatedness of 7 apparent twin dyads of Weddell seals (Leptonychotes weddellii) born in McMurdo…”
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