Download or read book Status of the Double Crested Cormorant Phalacrocorax Auritus in North America written by Linda Wires and published by CreateSpace. This book was released on 2013-05-31 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: The final report to the U.S. Fish and Wildlife Service regarding the Status of the Double-Crested Cormorant (Phalacrocorax Auritus) in North America
Download or read book Status of the Double crested Cormorant Phalacrocorax Auritus in North America written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Status Assessment of the Double crested Cormorant Phalacrocorax Auritus in Western North America 1998 2009 written by Jessica Y. Adkins and published by . This book was released on 2010 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The geographic area included in this updated status assessment of the Western Population of double-crested cormorants extends from the Pacific Coast east to the Continental Divide, north into southern British Columbia (following the breeding range of the species), and south to the international border with Mexico. The current size of the entire western breeding population is estimated to be about 29,240 breeding pairs. The estimate for the current breeding population in British Columbia, Washington, Oregon, and California, which support the great majority of the Western Population, is approximately 26,390 breeding pairs."--From Executive Summary.
Download or read book The Home life and Economic Status of the Double crested Cormorant Phalacrocorax Auritus Autitus Lesson written by Howard Lewis Mendall and published by . This book was released on 1936 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Double crested Cormorant Management written by and published by . This book was released on 2003 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Double Crested Cormorant written by Linda R. Wires and published by Yale University Press. This book was released on 2014-04-29 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explores the roots of the human-cormorant conflict and assesses the federal policies that have been developed to manage the bird's population in the twenty-first century.
Download or read book How to Know the Birds written by Ted Floyd and published by . This book was released on 2019 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In this elegant narrative, celebrated naturalist Ted Floyd guides you through a year of becoming a better birder. Choosing 200 top avian species to teach key lessons, Floyd introduces a new, holistic approach to bird watching and shows how to use the tools of the 21st century to appreciate the natural world we inhabit together whether city, country or suburbs." -- From book jacket.
Download or read book The Double Crested Cormorant written by Dennis Wild and published by University of Michigan Press. This book was released on 2012-02-08 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the story of the survival, recovery, astonishing success, and controversial status of the double-crested cormorant. After surviving near extinction driven by DDT and other contaminants from the 1940s through the early 1970s, the cormorant has made an unprecedented comeback from mere dozens to a population in the millions, bringing the bird again into direct conflict with humans. Hated for its colonial nesting behavior; the changes it brings to landscapes; and especially its competition with commercial and sports fishers, fisheries, and fish farmers throughout the Great Lakes and Mississippi Delta regions, the cormorant continues to be persecuted by various means, including the shotgun. In The Double-Crested Cormorant, Dennis Wild brings together the biological, social, legal, and international aspects of the cormorant's world to give a complete and balanced view of one of the Great Lakes' and perhaps North America's most misunderstood species. In addition to taking a detailed look at the complex natural history of the cormorant, the book explores the implications of congressional acts and international treaties, the workings and philosophies of state and federal wildlife agencies, the unrelenting efforts of aquaculture and fishing interests to "cull" cormorant numbers to "acceptable" levels, and the reactions and visions of conservation groups. Wild examines both popular preconceptions about cormorants (what kinds of fish they eat and how much) and the effectiveness of ongoing efforts to control the cormorant population. Finally, the book delves into the question of climate and terrain changes, their consequences for cormorants, the new territories to which the birds must adapt, and the conflicts this species is likely to face going forward.
Download or read book Phylogeography and Population Genetic Structure of Double crested Cormorants Phalacrocorax Auritus written by Dacey M. Mercer and published by . This book was released on 2009 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Double-crested Cormorant (Phalacrocorax auritus) is a widespread, colonial, North American waterbird with bicoastal and inland distributions. Four subspecies have been described within North America corresponding to five geographic breeding regions: Interior and North Atlantic cormorants (P. a. auritus); Southeastern cormorants (P. a. floridanus); Alaskan cormorants (P. a. cincinnatus); and Pacific cormorants (P. a. albociliatus). Management strategies vary widely across the species' range according to local perceptions rather than relative population status. An understanding of population genetic structure is necessary for delineating appropriate management units. We examined the genetic structure of Double-crested Cormorants across their range in the United States and Canada to quantify variation within and among breeding sites and to assess the status of traditional geographically defined subspecies. Sequences (700bp) from domains I and II of the mitochondrial control region were analyzed for 234 Double-crested Cormorants from 23 breeding sites. Variation was also examined at 8 microsatellite loci for 395 cormorants from the same 23 breeding sites. The mtDNA and microsatellite data provided strong evidence that the Alaskan subspecies is genetically divergent from other populations in North America (net sequence divergence = 6.72%; [Phi]ST for mtDNA control region = 0.738; FST for microsatellite loci = 0.05). Our data also suggested strong genetic divergence in the southwestern U.S.; southern California may represent a zone of introgression resulting from a northward expansion of a unique lineage from the species' range in northwestern Mexico. In contrast, there was little support for recognition of subspecies within the conterminous U.S. and Canada, outside of Alaska. Rather than genetically distinct regions corresponding to the putative subspecies, we observed a distribution of genetic variation consistent with a pattern of gradual isolation by distance. This pattern implies that genetic differences across the range are due to geographic distance rather than discrete subspecific breaks. Although three of the four subspecies were not genetically distinct, potential demographic separation, habitat differences, and recent declines at some colonies within the regions, suggests that the Pacific and possibly the North Atlantic breeding regions may still warrant consideration as distinct populations. This thesis provides the first species-wide assessment of the phylogeography and population genetic structure of the Double-crested Cormorant. It further resulted in the first microsatellite markers developed specifically for a North American pelecaniform. The mitochondrial and microsatellite data provide a comprehensive assessment of the four putative subspecies described for the species. Given the highly varying conservation status of Double-crested Cormorants throughout their range, results of this study provide guidance for conservation and management practices on their behalf in North America.
Download or read book The Double crested Cormorant written by Linda R. Wires and published by Yale University Press. This book was released on 2014-04-29 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: The double-crested cormorant, found only in North America, is an iridescent black waterbird superbly adapted to catch fish. It belongs to a family of birds vilified since biblical times and persecuted around the world. Thus it was perhaps to be expected that the first European settlers in North America quickly deemed the double-crested cormorant a competitor for fishing stock and undertook a relentless drive to destroy the birds. This enormously important book explores the roots of human-cormorant conflicts, dispels myths about the birds, and offers the first comprehensive assessment of the policies that have been developed to manage the double-crested cormorant in the twenty-first century. Conservation biologist Linda Wires provides a unique synthesis of the cultural, historical, scientific, and political elements of the cormorant’s story. She discusses the amazing late-twentieth-century population recovery, aided by protection policies and environment conservation, but also the subsequent U.S. federal policies under which hundreds of thousands of the birds have been killed. In a critique of the science, management, and ethics underlying the double-crested cormorant’s treatment today, Wires exposes “management” as a euphemism for persecution and shows that the current strategies of aggressive predator control are outdated and unsupported by science.
Download or read book Technical Bulletin written by and published by . This book was released on 1999 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Science based Initiative to Manage Double crested Cormorant Damage to Southern Aquaculture written by James F. Glahn and published by . This book was released on 2000 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Devil s Cormorant written by Richard J. King and published by University of New Hampshire Press. This book was released on 2013-09-22 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: Behold the cormorant: silent, still, cruciform, and brooding; flashing, soaring, quick as a snake. Evolution has crafted the only creature on Earth that can migrate the length of a continent, dive and hunt deep underwater, perch comfortably on a branch or a wire, walk on land, climb up cliff faces, feed on thousands of different species, and live beside both fresh and salt water in a vast global range of temperatures and altitudes, often in close proximity to man. Long a symbol of gluttony, greed, bad luck, and evil, the cormorant has led a troubled existence in human history, myth, and literature. The birds have been prized as a source of mineral wealth in Peru, hunted to extinction in the Arctic, trained by the Japanese to catch fish, demonized by Milton in Paradise Lost, and reviled, despised, and exterminated by sport and commercial fishermen from Israel to Indianapolis, Toronto to Tierra del Fuego. In The DevilÕs Cormorant, Richard King takes us back in time and around the world to show us the history, nature, ecology, and economy of the worldÕs most misunderstood waterfowl.
Download or read book Alaska Seabird Information Series ASIS written by and published by . This book was released on 2006 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Compilation of seabird species accounts for all seabirds breeding in Alaska and five important nonbreeders. Conservation status, life history, distribution, population size and trends, conservation concerns, and recommended management actions are included in the accounts"--Leaf i.
Download or read book Status Report on the Double Crested Cormorant Phalacrocorax Auritus written by Brent J. Markham and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Status Report on Double crested Cormorant Phalacrocorax Auritus in Canada written by Brent J. Markham and published by . This book was released on 1978 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lives of North American Birds written by Kenn Kaufman and published by Houghton Mifflin Harcourt. This book was released on 1996 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt: The bestselling natural history of birds, lavishly illustrated with 600 colorphotos, is now available for the first time in flexi binding.
