Download or read book Status Review of the Eastern North Pacific Stock of Gray Whales written by and published by . This book was released on 1999 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Gray Whale Eschrichtius Robustus written by Mary Lou Jones and published by Academic Press. This book was released on 2012-12-02 with total page 625 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Gray Whale: Eschrichtius robustus provides an introduction to the understanding of Eschrichtius robustus or the gray whale. This book explores the life processes, reproduction, and growth of large cetacean populations. Organized into four parts encompassing 25 chapters, this book begins with an overview of the gray whale evolution, fossils, and subfossil remains, range, and systematics in historical times. This text then presents the historical of gray whale exploitation and the economic importance of these whales to humans. Other chapters consider the gray whale migration, abundance, and seasonal distribution in the wake of the California population's recovery from depletion. This book discusses as well the methods used in shore-based censuses during migration and in aerial surveys of gray whales taken on their winter grounds. The final chapter deals with some innovative approaches to the study of free-ranging cetaceans. This book is a valuable resource for anthropologists, paleontologists, biologists, and naturalists.
Download or read book Population Status of the Eastern North Pacific Stock of Gray Whales in 2009 written by André E. Punt and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: An age- and sex-structured population dynamics model is fitted using Bayesian methods to data on the catches and abundance estimates for the eastern North Pacific (ENP) stock of gray whales (Eschrictius robustus). The prior distributions used for these analyses incorporate revised estimates of abundance for ENP gray whales and account explicitly for the drop in abundance caused by the 1999-2000 mortality event. A series of analyses are conducted to evaluate the sensitivity of the results to different assumptions. The baseline analysis estimates the ENP gray whale population to be above the maximum net productivity level (MNPL), because the posterior mean for the ratio of 2009 abundance to MNPL, termed the optimal sustainable population ratio, is 1.29 (with a posterior median of 1.37 and a 90% probability interval of 0.68-1.51), indicating the population is estimated to be well above MNPL. The baseline analysis estimates a probability of 0.884 that the population is above its MNPL, which means there is a 0.884 probability that it is at its optimum sustainable population size as defined by the U.S. Marine Mammal Protection Act. These results are consistent across all the model runs. The baseline model also estimates the 2009 ENP gray whale population size (posterior mean of 21,911) to be at 85% of its carrying capacity (posterior mean of 25,808), and this is also consistent across all the model runs.
Download or read book Washington State Status Report for the Gray Whale written by Scott A. Richardson and published by . This book was released on 1997 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book MMPA Bulletin written by and published by . This book was released on with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Five year Plan for Research and Monitoring of the Eastern North Pacific Population of Gray Whales written by United States. National Marine Fisheries Service. Gray Whale Monitoring Task Group and published by . This book was released on 1993 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Saving the Gray Whale written by Serge Dedina and published by University of Arizona Press. This book was released on 2000-01-01 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Once hunted by whalers and now the darling of ecotourists, the gray whale has become part of the culture, history, politics, and geography of Mexico's most isolated region. After the harvesting of gray whales was banned by international law in 1946, their populations rebounded; but while they are no longer hunted for their oil, these creatures are now chased up and down the lagoons of southern Baja California by whalewatchers. This book uses the biology and politics associated with gray whales in Mexican waters to present an unusual case study in conservation and politics. It provides an inside look at how gray whale conservation decisions are made in Mexico City and examines how those policies and programs are carried out in the calving grounds of San Ignacio Lagoon and Magdalena Bay, where catering to ecotourists is now an integral part of the local economy. More than a study of conservation politics, Dedina's book puts a human face on wildlife conservation. The author lived for two years with residents of Baja communities to understand their attitudes about wildlife conservation and Mexican politics, and he accompanied many in daily activities to show the extent to which the local economy depends on whalewatching. "It is ironic," observes Dedina, "that residents of some of the most isolated fishing villages in North America are helping to redefine our relationship with wild animals. Americans and Europeans brought the gray whale population to the brink of extinction. The inhabitants of San Ignacio Lagoon and Magdalena Bay are helping us to celebrate the whales' survival." By showing us how these animals have helped shape the lifeways of the people with whom they share the lagoons, Saving the Gray Whale demonstrates that gray whales represent both a destructive past and a future with hope.
Download or read book Recent Information on the Status of Large Whales in California Coastal Waters written by Jay Barlow and published by . This book was released on 1993 with total page 20 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 1999 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Report to Congress written by United States. Marine Mammal Commission and published by . This book was released on 1993 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of the 2006 2007 Census of the Eastern North Pacific Stock of Gray Whales written by David J. Rugh and published by . This book was released on 2008 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Federal Register written by and published by . This book was released on 2013-12 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Report of the Marine Mammal Commission written by United States. Marine Mammal Commission and published by . This book was released on 1990 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book DRAFT ENVIRONMENTAL ASSESSMENT on ISSUING A QUOTA TO THE MAKAH INDIAN TRIBE FOR A SUBSISTENCE HUNT ON GRAY WHALES FOR THE YEARS 2001 AND 2002 written by and published by DIANE Publishing. This book was released on with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Re analysis of Gray Whale Southbound Migration Surveys 1967 2006 written by Jeffrey Lee Laake and published by . This book was released on 2009 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: Between 1967 and 2007, 23 seasons of shore-based counts of the Eastern North Pacific (ENP) stock of gray whales (Eschrichtius robustus) were conducted throughout all or most of the southbound migration near Carmel, California. Population estimates have been derived from these surveys using a variety of techniques that were adapted as the data collection protocol evolved. The subsequent time series of estimates was used to evaluate trend and population status, resulting in the conclusion that the population was no longer endangered and had achieved its optimum sustainable population (OSP) level. We re-evaluated the data from all of the surveys using a common estimation procedure and an improved method for treatment of error in pod size and detection probability estimation. The newly derived abundance estimates between 1967 and 1987 were generally larger (-2.5% to 21%) than previous abundance estimates. However, the opposite was the case for survey years 1992 to 2006, with estimates declining from -4.9% to -29%. This pattern is largely explained by the differences in the correction for pod size bias which occurred because the pod sizes in the calibration data overrepresented pods of two or more whales and underrepresented single whales relative to the estimated true pod size distribution.
Download or read book Chukchi Sea Planning Area Oil and Gas Sale 193 and the Seismic Surveying Activities in the Chukchi Sea written by and published by . This book was released on 2007 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Outer Continental Shelf Oil and Gas Leasing Program 2012 2017 written by United States. Bureau of Ocean Energy Management and published by . This book was released on 2011 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:
