Results 11 to 20 of about 119,975 (244)

Detecting ringed seal vocalizations using deep learning [PDF]

JASA Express Letters
Ringed seals (Pusa hispida) in the Arctic face habitat loss from climate change, making monitoring critical for conservation. Passive acoustic monitoring provides essential data; however, large data volumes require automated analysis.
Karlee E. Zammit, William D. Halliday, Amalis Riera, Annika Heimrich, Mariana Barbosa, Nikoletta Diogou, Olokhaktomiut Hunters and Trappers Committee, Stephen J. Insley, Fabio Frazao, Sebastien Fabbro, Stan E. Dosso   +10 more
doaj   +3 more sources

Photo-ID as a tool for studying and monitoring the endangered Saimaa ringed seal

Endangered Species Research, 2016
Photo-identification (photo-ID) with camera traps was examined as a non-invasive method for studying and monitoring the endangered Saimaa ringed seal Phoca hispida saimensis.
Koivuniemi, M, Auttila, M, Niemi, M, Levänen, R, Kunnasranta, M   +4 more
doaj   +2 more sources

Whole-genome re-sequencing of the Baikal seal and other phocid seals for a glimpse into their genetic diversity, demographic history, and phylogeny [PDF]

GigaByte
The Baikal seal (Pusa sibirica) is a freshwater seal endemic to Lake Baikal, where it became landlocked million years ago. It is an abundant species of least concern despite the limited habitat.
Marcel Nebenführ , Ulfur Arnason , Axel Janke   +2 more
doaj   +2 more sources

Modeling ringed seal Pusa hispida habitat and lair emergence timing in the eastern Bering and Chukchi Seas

Endangered Species Research, 2021
Ringed seals Pusa hispida are reliant on snow and sea ice for denning, and a better understanding of ringed seal habitat selection and timing of emergence from snow dens (also called lairs) is needed to quantify and predict effects of climate change in ...
JM Lindsay, KL Laidre, PB Conn, EE Moreland, PL Boveng   +4 more
doaj   +1 more source

Age and sex composition of seals killed by polar bears in the eastern Beaufort Sea. [PDF]

PLoS ONE, 2012
Polar bears (Ursus maritimus) of the Beaufort Sea enter hyperphagia in spring and gain fat reserves to survive periods of low prey availability. We collected information on seals killed by polar bears (n=650) and hunting attempts on ringed seal (Pusa ...
Nicholas W Pilfold, Andrew E Derocher, Ian Stirling, Evan Richardson, Dennis Andriashek   +4 more
doaj   +1 more source

Ringed seal demography in a changing climate [PDF]

, 2019
Climate change is affecting species’ distributions and abundances worldwide. Baseline population estimates, against which future observations may be compared, are necessary if we are to detect ecological change.
Caswell, H., Reimer, J.R., Andrew E. Derocher, Hal Caswell, Lewis, M.A., Jody R. Reimer, Mark A. Lewis, Derocher, A.E.   +7 more
core   +2 more sources

DNA barcoding reveals different cestode helminth species in northern European marine and freshwater ringed seals

International Journal for Parasitology: Parasites and Wildlife, 2021
Three subspecies of the ringed seal (Pusa hispida) are found in northeastern Europe: P. h. botnica in the Baltic Sea, P. h saimensis in Lake Saimaa in Finland, and P. h. ladogensis in Lake Ladoga in Russia.
Tommi Nyman, Elena Papadopoulou, Eeva Ylinen, Saskia Wutke, Craig T. Michell, Ludmila Sromek, Tuula Sinisalo, Elena Andrievskaya, Vyacheslav Alexeev, Mervi Kunnasranta   +9 more
doaj   +1 more source

Spatial variation in carbon source use and trophic position of ringed seals across a latitudinal gradient of sea ice

Ecological Indicators, 2022
Anthropogenic climate change is causing changes to the Arctic sea-ice system with implications for the magnitude and timing of Arctic pelagic and ice-associated (sympagic) primary production that influences food web interactions.
Cody G. Carlyle, James D. Roth, David J. Yurkowski, Doreen Kohlbach, Brent G. Young, Thomas A. Brown, Frank F. Riget, Rune Dietz, Steven H. Ferguson   +8 more
doaj   +1 more source

In search of virus carriers of the 1988 and 2002 phocine distemper virus outbreaks in European harbour seals [PDF]

, 2008
European harbour seal (Phoca vitulina) populations decreased substantially during the phocine distemper virus (PDV) outbreaks of 1988 and 2002. Different hypotheses have stated that various seals and terrestrial carnivore species might be the source of ...
Sonne, C., Harkonen, T., Kreutzer, R., Muller, G., Kreutzer, M., Baumgartner, W., Reijnders, P.J.H., Brasseur, S.M.J.M., Dietz, R., Born, E.W., Siebert, U.   +10 more
core   +1 more source

Polar bear diet composition reveals spatiotemporal distribution of Arctic marine mammals across Nunavut, Canada

Ecological Indicators, 2021
Climate warming and associated physical and biological changes will likely force widespread species redistribution, particularly in polar environments. However, tracking such distributional shifts is difficult.
Melissa P. Galicia, Gregory W. Thiemann, Markus G. Dyck, Steven H. Ferguson   +3 more
doaj   +1 more source