Author: Stephen Dennis SykesPublisher:
ISBN:
Category :
Languages : en
Pages : 146
Book Description
Multiple Mark-recapture Estimators of Salmon Spawning Run Sizes
Author: Stephen Dennis SykesPublisher:
ISBN:
Category :
Languages : en
Pages : 146
Book Description
Fishery Bulletin
Author: Sport Fishery Abstracts
Author: Fisheries Review
Author: Capture-Recapture: Parameter Estimation for Open Animal Populations
Author: George A. F. SeberPublisher: Springer
ISBN: 3030181871
Category : Mathematics
Languages : en
Pages : 663
Book Description
This comprehensive book, rich with applications, offers a quantitative framework for the analysis of the various capture-recapture models for open animal populations, while also addressing associated computational methods. The state of our wildlife populations provides a litmus test for the state of our environment, especially in light of global warming and the increasing pollution of our land, seas, and air. In addition to monitoring our food resources such as fisheries, we need to protect endangered species from the effects of human activities (e.g. rhinos, whales, or encroachments on the habitat of orangutans). Pests must be be controlled, whether insects or viruses, and we need to cope with growing feral populations such as opossums, rabbits, and pigs. Accordingly, we need to obtain information about a given population’s dynamics, concerning e.g. mortality, birth, growth, breeding, sex, and migration, and determine whether the respective population is increasing , static, or declining. There are many methods for obtaining population information, but the most useful (and most work-intensive) is generically known as “capture-recapture,” where we mark or tag a representative sample of individuals from the population and follow that sample over time using recaptures, resightings, or dead recoveries. Marks can be natural, such as stripes, fin profiles, and even DNA; or artificial, such as spots on insects. Attached tags can, for example, be simple bands or streamers, or more sophisticated variants such as radio and sonic transmitters. To estimate population parameters, sophisticated and complex mathematical models have been devised on the basis of recapture information and computer packages. This book addresses the analysis of such models. It is primarily intended for ecologists and wildlife managers who wish to apply the methods to the types of problems discussed above, though it will also benefit researchers and graduate students in ecology. Familiarity with basic statistical concepts is essential.
Masters Theses in the Pure and Applied Sciences
Author: Wade H. ShaferPublisher: Springer
ISBN: 9780306423857
Category : Science
Languages : en
Pages : 424
Book Description
Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1 957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 29 (thesis year 1984) a total of 12,637 theses titles from 23 Canadian and 202 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 29 reports theses submitted in 1984, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
Fishery Data Series
Author: Reliability of Trans-generational Genetic Mark-recapture for Enumerating Pacific Salmon
Author: Samuel W. RosenbaumPublisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 0
Book Description
As Pacific salmon (Oncorhynchus spp.) continue to decline across much of their range, it is imperative to further develop reliable tools to quantify trends in population abundance. Estimating the number of spawning adult Pacific salmon (escapement) is a fundamental but challenging objective for fishery managers. Escapement monitoring of Pacific salmon typically requires intensive sampling across the return migration, often in remote locations, and is subject to changing environmental conditions that can reduce data quality. Alternative methods that increase the efficiency, accuracy, and precision of escapement monitoring are desirable, particularly during times of shrinking budgets for fisheries management. With the advent of high-throughput genotyping, biologists can combine molecular pedigree information with life-history data to make robust inferences about the size of wild populations using trans-generational genetic mark-recapture (tGMR). Minimally invasive genetic samples ‘mark’ adults and ‘capture’ juveniles, then multi-locus genotypes are used to identify parent-offspring pairs (‘recaptures’), provided that these kinship relationships can be identified and that certain mark-recapture assumptions such as an equal probability of capture and a closed population are met. Our project aimed to help optimize the emerging tGMR methodology by comparing tGMR estimates to a traditional mark-recapture project for Chinook salmon (Oncorhynchus tshawytscha) from the Chilkat River in southeast Alaska. We further identified potential biases arising from violations of the equal probability of capture and closed population assumptions using an individual-based simulation model to evaluate the accuracy and precision of tGMR under varying demographic and sampling scenarios. We leveraged empirical values to parameterize simulations exploring the influence of age-specific reproductive success and sampling selectivity on tGMR estimates. Finally, we determined how adult sampling location and timing can impact tGMR estimates by comparing adult samples collected from the mainstem of the Chilkat River in June from samples collected in the upriver tributaries in August. Our assessment of the reliability of tGMR informs this method’s potential for accurate and precise monitoring of populations.
Comprehensive Assessment and Monitoring Program (CAMP)
Author: A Mark-recapture Experiment to Estimate the Spawning Escapement of Sockeye Salmon in the East Alsek River, 2003
Author: David L. WaltemyerPublisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 13
Book Description