Download or read book Review of Methods for Eastern Canada West Greenland Bowhead Whale Balaena Mysticetus Population Abundance Estimation written by William R. Koski and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Abundance Estimates of the Eastern Canada West Greenland Bowhead Whale Balaena Mysticetus Population Based on Genetic Mark recapture Analyses written by Timothy Ray Frasier and published by . This book was released on 2015 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Updated Abundance Estimate and Harvest Advice for the Eastern Canada west Greenland Bowhead Whale Population written by and published by . This book was released on 2015 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Updated Abundance Estimate and Harvest Advice for the Eastern Canada west Greenland Bowhead Whale Population written by and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 2013 survey area was expanded to achieve complete coverage of the summer range of EC-WG bowhead whales, because it overlaps to a great extent with summer distributions of Baffin Bay narwhals and because the survey methodology is similar for both species. [...] The partial abundance estimate obtained from the 2002 survey was imprecise due to the small number of whales observed and the large uncertainty associated with the estimate. [...] As the ice breaks up, bowhead whales found in northern Foxe Basin in spring likely move through Fury and Hecla Strait to summer in the Gulf of Boothia and Prince 2 Central and Arctic Region Updated abundance and harvest advice for EC-EG bowhead Regent Inlet. [...] The current level of total allowable harvest is five bowhead whales per year in the NSA, and two bowhead whales per year in the NMR. [...] ANALYSIS Aerial Survey Design and Analysis The High Arctic Cetacean Survey (HACS) was designed to cover the largest possible proportion of the population's summering range and improve on the precision of past surveys.

Download or read book Abundance Estimate of the Eastern Canada West Greenland Bowhead Whale Population Based on the 2013 High Arctic Cetacean Survey written by Thomas Doniol-Valcroze and published by . This book was released on 2015 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book COSEWIC Assessment and Update Status Report on the Bowhead Whale Balaena Mysticetus written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spatial Modeling Parameter Uncertainty and Precision of Density Estimates from Line transect Surveys written by Megan Caton Ferguson and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spatially-explicit models of animal density, such as density surface models (DSMs), are diverse, flexible, and powerful tools for investigating spatial patterns in animal density, examining associations between animal density and environmental covariates, and estimating abundance. Advances in spatial modeling methods and subsequent incorporation into widely accessible software allow the non-specialist to add these tools to their analytical toolbox. However, limitations in some software may prevent a thorough treatment of uncertainty. I expanded the functionality of tools for constructing DSMs from line-transect survey data to derive a population abundance estimate that honestly accounts for multiple sources of detection bias and associated uncertainty. As an illustrative case study, I used data collected during an aerial line-transect survey for Western Arctic bowhead whales (\textit{Balaena mysticetus}) over their summering grounds in the Beaufort Sea and Amundsen Gulf during August 2019. Using spatially explicit hierarchical generalized additive models that incorporated correction factors and associated uncertainty for perception and availability bias, I estimated the abundance of the Western Arctic bowhead whale population to be 17,175 whales (CV($\hat{N}$)= 0.237; 95\% confidence interval = [10,793, 27,330]). This model-based abundance estimate is similar in magnitude to the two most recent estimates for this population based on data from ice-based surveys in 2011 and 2019. Additionally, my abundance estimate is sufficiently precise to inform management decisions for this protected species. The enhanced precision of my abundance estimate over the estimate derived using design-based analytical methods applied to the same data is due to explicit modeling of the spatial correlation in whale density. Applying the power of DSMs to the aerial line-transect survey data made this survey methodology a viable alternative to ice-based surveys, which are facing obstacles due to climate change, for updating abundance estimates for Western Arctic bowhead whales in the future. My analytical developments can easily be applied to other line-transect datasets with similar and common challenges due to multiple survey platforms, spatial heterogeneity in animal density and environmental conditions, and habitat partitioning among groups (e.g., defined by age, sex, activity state) in the target population.

Download or read book Evaluation of a Provision to Carry Over Unused Licences for Eastern Canada West Greenland Bowhead Whales Balaena Mysticetus in Canada written by Jeff W. Higdon and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Bowhead Whale Eastern Canada West Greenland Population written by Canada. Department of Fisheries and Oceans and published by . This book was released on 2009 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of a Provision to Carry over Unused Licences for Eastern Canada West Greenland Bowhead Whales Balaena Mysticetus in Canada written by and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Population Biology of the Bowhead Whale Balaena Mysticetus II written by Howard W. Braham and published by . This book was released on 1979 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summarises the current state of knowledge on each population, defines migration routes and timing, and estimates population size from original field research and a review of the literature.

Download or read book Estimates of Total Allowable Removals for the Eastern Canada West Greenland Population of Bowhead Whales written by L. Dueck and published by . This book was released on 2008 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Marine Fisheries Review written by and published by . This book was released on 1984 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Commercial and Subsistence Harvests of Bowhead Whales Balaena Mysticetus in Eastern Canada and West Greenland written by Jeff Higdon and published by . This book was released on 2008 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Instantaneous Availability Bias Correction for Calculating Aerial Survey Abundance Estimates for Bowhead Whales Balaena Mysticetus in the Canadian High Arctic written by and published by . This book was released on 2015 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Numbers of Bowhead Whales Balaena Mysticetus in the Eastern Canadian Arctic written by Susan Ellen Cosens and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report of a three-year program, 2002 through 2004, to survey the numbers of bowhead whales summering in the Canadian eastern Arctic. The goals were to estimate numbers in both the putative Davis Strait-Baffin Bay (DS-BB) and Hudson Bay-Foxe Basin (HB-FB) stocks as well as to better understand the summering distribution of the bowhead whales. Data collection and data analysis methods are explained and results are cited by date and place. Tables and maps include details of bowhead whales distribution in Canada, near-surface estimates of bowhead whale numbers, numbers of whales seen by observers at various distances from aircraft in each of three surveys, and summary of survey conditions in 2002 and 2003.

Download or read book The Bowhead Whale written by John J. Burns and published by . This book was released on 1993 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended to be a cohesive species account of the bowhead whale. Chapters detail the Bering Sea population, evolutionary relationships and classification, anatomy and physiology, behavior, foods and feeding ecology, reproduction, morbidity and mortality, distribution and movement, population size and dynamics, commercial whaling, subsistence whaling, and the influence of man and his activities.