Download or read book Aerial Survey Estimates of Hauled out Ringed Seal Pusa Hispida Density in Western Hudson Bay June 2009 and 2010 written by Steven H. Ferguson and published by . This book was released on 2011 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book World Ocean Assessment written by Alan Simcock and published by Cambridge University Press. This book was released on 2017-04-17 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt: This United Nations report examines the current state of knowledge of the world's oceans, for policymakers, and provides a reference for marine science courses.
Download or read book Review of Aerial Survey Estimates for Ringed Seals Pusa Hispida in Western Hudson Bay 2009 and 2010 written by Steven H. Ferguson and published by . This book was released on 2011 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Review of Aerial Survey Estimates for Ringed Seals Phoca Hispida in Western Hudson Bay written by Canada. Department of Fisheries and Oceans. Central and Arctic Region and published by . This book was released on 2009 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparison of Strip and Line transect Sampling to Estimate Density and Abundance of Ringed Seals Phoca Hispida in Western Hudson Bay 2007 and 2008 written by Magaly Chambellant and published by . This book was released on 2009 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Little Less Arctic written by Steven H. Ferguson and published by Springer Science & Business Media. This book was released on 2010-05-30 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Arctic Canada, Hudson Bay is a site of great exploration history, aboriginal culture, and a vast marine wilderness supporting large populations of marine mammals and birds. These include some of the most iconic Arctic animals like beluga, narwhal, bowhead whales, and polar bears. Due to the challenges of conducting field research in this region, some of the mysteries of where these animals move, and how they are able to survive in such seemingly inhospitable, ice-choked habitats are just now being unlocked. For example, are polar bears being replaced by killer whales? This new information could not be more salient, as the Hudson Bay Region is undergoing rapid environmental change due to global warming, as well as increased pressures from industrial development interests. A Little Less Arctic brings together some of the world’s leading Arctic scientists to present the current state of knowledge on the physical and biological characteristics of Hudson Bay.
Download or read book Ecology of Ringed Seals Phoca Hispida in Western Hudson Bay Canada written by Magaly Vincent-Chambellant and published by . This book was released on 2010 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Density -- distribution -- life-history -- body condition -- reproduction -- diet -- spring ice break-up -- temporal variation -- snow depth -- ice cover -- climate change.
Download or read book Sources of Variability in Aerial Survey Counts of Harbour Seals on Haul out Sites in the Bay of Fundy written by G. Mark Fowler and published by Dartmouth, N.S. : Fisheries and Ocean Canada. This book was released on 2005 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multiple aerial censuses were conducted of a major harbour seal (Phoca vitulina) haulout area off Grand Manan, New Brunswick, Canada, during the molting period to quantify sources of variability in aerial survey counts. Counts increased and decreased with local time, with peak counts between 1200-1600 EST. Low tide may have functioned as a delimiter to this relationship by degree of emergence of haul-out sites, assuming competition for space between seals, but the apparent effect could be an alias for cumulative survey disturbance or progression through the molt period. Hot days appeared to depress counts. Standard deviations of counts made between 1200-1600, computed independently for each day to negate tide or disturbance effects, ranged from 3.7 to 7.5% of the mean. We estimated the proportion of seals in the water during peak haul-out at 20% of the opulation. Photographic counts usually exceeded visual counts, but the difference extended to counts of small groups of animals unlikely to have been visually miscounted. The results (visual counts) of the aerial census study were used to derive correction factors for seals in the water and time of day. These correction factors were applied to earlier estimates of total Bay of Fundy area harbour seal abundance derived from aerial surveys in 1986 and 1992 (adjusted abundances of 2 362 and 4 218 harbour seals respectively). The earlier surveys were also used to adjust the 1995 study to provide a total abundance estimate for the Bay of Fundy (5446 harbour seals). A growth curve fitted to the three point estimates for 1986, 1992 and 1995 suggested abundance increased at a rate of 9.3% per year
Download or read book Censusing and Estimating the Size of Ringed Seal Populations written by Arctic Biological Station and published by ste. anne de bellevue, que. : arctic biological station, fisheries and marine service. This book was released on 1973 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paper outlining and evaluating methods used in aerial censusing and estimating population size of ringed seals (phoca (Pusa) hispida) in the Home Bay area on the east coast of Baffin Island in 1968 and 1969 and on the west coast of Victoria Island and Amundsen Gulf region in 1972.
Download or read book Ringed Seals in James Bay and Hudson Bay Population Estimates and Catch Statitics written by T.G. Smith and published by . This book was released on 1975 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monitoring Distribution and Abundance of Ringed Seals in Northern Alaska written by Kathryn J. Frost and published by . This book was released on 2002 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes results of aerial surveys conducted to determine the distribution and abundance of ringed seals (Phoca hispida) in the central Beaufort Sea off Alaska ... Specific objectives were to: 1) review and refine protocols for monitoring ringed seals by aerial surveys; 2) estimate relative abundance and density of ringed seals on fast ice in the Beaufort Sea during 1996-1999 and compare with data collected during 1985-1987; and 3) correlate observed ringed seal densities on fast ice with environmental parameters."--Page vi.
Download or read book Climate Change and Ringed Seal phoca Hispida Recruitment in Western Hudson Bay written by Steven H. Ferguson and published by . This book was released on 2005 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ringed Seal Pusa Hispida Population Trends Inferred from Genetics written by Kyle Ritchie and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate change is predicted to affect ringed seals negatively. The first objective of my thesis was to assess trends in abundance of ringed seals using genetics. I used genetic profiles to estimate the effective number of breeders (Nb) and assessed relationships with counts from aerial surveys (Ns). I did not detect a relationship between Nb and Ns or a temporal trend in either variable when the entire time series was assessed. However, Nb fluctuated over time, with a negative trend from 1983 to 1994 and becoming stable from 1995 to 2012. My second objective was to determine which variables predicted Nb. My analysis suggested that spring rainfall, snow depth, and the date of fall sea-ice freezeup had a greater influence on Nb than the timing of spring breakup. This research helps address the lack of long-term monitoring data for ringed seals, while improving our understanding of population dynamics.
Download or read book Assessing the Potential Effects of Near Shore Hydrocarbon Exploration on Ringed Seals in the Beaufort Sea Region 2003 2006 written by Lois A. Harwood and published by . This book was released on 2007 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Pacific Arctic Region written by Jacqueline M. Grebmeier and published by Springer. This book was released on 2014-06-10 with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Pacific Arctic region is experiencing rapid sea ice retreat, seawater warming, ocean acidification and biological response. Physical and biogeochemical modeling indicates the potential for step-function changes to the overall marine ecosystem. This synthesis book was coordinated within the Pacific Arctic Group, a network of international partners working in the Pacific Arctic. Chapter topics range from atmospheric and physical sciences to chemical processing and biological response to changing environmental conditions. Physical and biogeochemical modeling results highlight the need for data collection and interdisciplinary modeling activities to track and forecast the changing ecosystem of the Pacific Arctic with climate change.
Download or read book Circumpolar Ringed Seal Pusa Hispida Monitoring written by Conservation of Arctic Flora and Fauna and published by . This book was released on 2013 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
