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Book Estimate of Cumberland Sound Beluga Delphinapterus Leucas Population Size from the 2014 Visual and Photographic Aerial Survey

Download or read book Estimate of Cumberland Sound Beluga Delphinapterus Leucas Population Size from the 2014 Visual and Photographic Aerial Survey written by Marianne Marcoux and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Abundance and Total Allowable Landed Catch Estimates from the 2017 Aerial Survey of the Cumberland Sound Beluga Delphinapterus Leucas Population

Download or read book Abundance and Total Allowable Landed Catch Estimates from the 2017 Aerial Survey of the Cumberland Sound Beluga Delphinapterus Leucas Population written by Cortney A. Watt and published by . This book was released on 2021 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Status of Beluga Delphinapterus Leucas in Cumberland Sound Nunavut

Download or read book Status of Beluga Delphinapterus Leucas in Cumberland Sound Nunavut written by Canadian Science Advisory Secretariat and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Estimate of Cumberland Sound Beluga Delphinapterus Leucas Population Size from the 2014 Visual and Photographic Aerial Survey

Download or read book Estimate of Cumberland Sound Beluga Delphinapterus Leucas Population Size from the 2014 Visual and Photographic Aerial Survey written by and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Belugas (Delphinapterus leucas) in Cumberland Sound are a genetically distinct population in the Canadian eastern Arctic. They have been designated as threatened by the Committee on the Status of Endangered Wildlife in Canada due to a possible decline in abundance. To provide an update to the 2009 population estimate an aerial survey was conducted in August 2014. The 2014 survey had two components; a photographic survey of Clearwater Fiord (a small inlet in the northwest corner of Cumberland Sound), and a visual survey of the northern and western parts of Cumberland Sound. The photographic survey completely covered Clearwater Fiord four times as this is known to be an area where belugas aggregate in the summer months. The survey of the northern part of Cumberland Sound was completed twice, whereas the survey of the western part of Cumberland Sound was completed once. Different correction factors for availability bias were calculated according to the presumed depth at which belugas could be seen from the aircraft and on photos. The corrected estimate for Clearwater Fiord was 603 [coefficient of variance (CV) = 0.076, 95% confidence interval (CI) = 519-699], while the estimate for the northern part of Cumberland Sound was 548 (CV = 0.445, 95% CI = 240-1256). No belugas were seen in the western part of Cumberland Sound. This resulted in a total population abundance of 1151 (CV = 0.214, 95% CI = 760-1744) belugas.

Book Advice on Size and Trend of the Cumberland Sound Beluga Whale Population 1990 to 2009

Download or read book Advice on Size and Trend of the Cumberland Sound Beluga Whale Population 1990 to 2009 written by Canadian Science Advisory Secretariat and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Cumberland Sound Beluga

Download or read book Cumberland Sound Beluga written by and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Total landings between and practices in the hunting of belugas 1992 and 2001 fluctuated between 15 and holding community consultations to and 50, averaging 36-37 belugas per make the public more aware of the year (Table 1). [...] Herds of larger northern (excluding Clearwater Fiord) belugas arrive at the floe edge in late and western sectors of Cumberland April and May and eventually move to Sound in 1999. [...] Comparison of the 1991 and 1999 above the x-axis (i.e., the horizontal line), survey results suggest that the the more probable that the estimated population size is close to the actual Cumberland Sound population is population size. [...] The impact of environmental anticipated that COSEWIC will reassess variables such as changes in climate the status of the population in the next and ice conditions on belugas, their prey two to three years.

Book Catch Statistics for Beluga Delphinapterus Leucas Harvested from the Eastern High Arctic Baffin Bay and Cumberland Sound Populations from 1977 2020

Download or read book Catch Statistics for Beluga Delphinapterus Leucas Harvested from the Eastern High Arctic Baffin Bay and Cumberland Sound Populations from 1977 2020 written by Cortney A. Watt and published by . This book was released on 2021 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Detecting Changes in Population Trends for Cook Inlet Beluga Whales Delphinapterus Leucas Using Alternative Schedules for Aerial Surveys

Download or read book Detecting Changes in Population Trends for Cook Inlet Beluga Whales Delphinapterus Leucas Using Alternative Schedules for Aerial Surveys written by Roderick C. Hobbs and published by . This book was released on 2013 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Measuring population trends, and detecting a change in the trend, of Cook Inlet beluga whales (CIB), Delphinapterus leucas, has a specific role in the co-management agreement that determines harvest levels, and a more general application in the management of the population. Currently, an annual aerial survey schedule has provided abundance estimates from which growth trends for this population are determined. Under the harvest co-management agreement, the measured trend over a 10-year period is used to classify the population into one of three growth categories ('high', 'intermediate', or 'low'; Appendix). The growth category, along with the average abundance over the last 5-year period, is used to determine the number of takes allowed over the next 5-year hunting period (Appendix). For a more general application, we would like to be able to detect a change in the growth rate of the population that results from a change in the underlying life history parameters such as birth interval and rates of survival and identify the year that the change occurred"--Introduction.

Book Advances in Research on the Beluga Whale Delphinapterus Leucas

Download or read book Advances in Research on the Beluga Whale Delphinapterus Leucas written by Thomas G. Smith and published by . This book was released on 1990 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Collection of 14 articles representing a cross-section of current research on beluga whales, Delphinapterus leucas, in North American waters.

Book Proceedings of the Meeting on Recovery Potential Assessment of Cumberland Sound Ungava Bay Eastern Hudson Bay and St Lawrence Beluga Populations Delphinapterus Leucas

Download or read book Proceedings of the Meeting on Recovery Potential Assessment of Cumberland Sound Ungava Bay Eastern Hudson Bay and St Lawrence Beluga Populations Delphinapterus Leucas written by and published by . This book was released on 2005 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the peer review meeting summarized in this report was to proceed with a recovery potential assessment for 4 beluga populations designated as at risk under the Species at Risk Act (SARA). The 4 beluga populations are the Cumberland Sound, the Saint Lawrence Estuary, the Ungava Bay and the Eastern Hudson Bay populations. The 1st part of the meeting focussed on the development of interim descriptions of the biological properties of suitable recovery targets and recovery times that could be applied to beluga populations of concern. The 2nd part of the meeting addressed the recovery potential assessment for each beluga population.

Book Commercial and Subsistence Catches of Beluga Whales Delphinapterus Leucas from Cumberland Sound Nunavut 1840 2016

Download or read book Commercial and Subsistence Catches of Beluga Whales Delphinapterus Leucas from Cumberland Sound Nunavut 1840 2016 written by David Bruce Stewart and published by . This book was released on 2018 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A record of commercial and subsistence catches of beluga whales (Delphinapterus leucas) from the Cumberland Sound population in Nunavut, over the period 1840 through 2016, is presented. This work adds substantially to the catch record and improves the basis for population modelling to inform recovery planning. Commercial hunts in 1860 through 1966 removed at least 14,079 belugas from Cumberland Sound, and subsistence hunts another 2,765--mostly after 1960. Annual catches suggest a pattern of long-term depletion, with partial recovery related to a hiatus in commercial hunting around World War I, followed by continued depletion. Catches stabilized following formal harvest regulation in 1980. In some years the historical commercial catches were 15x greater than the current annual subsistence catches"--Abstract, p. vi.