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Author: Canadian Science Advisory Secretariat
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Canadian Science Advisory Secretariat
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author:
Publisher:
ISBN:
Category : Speckled dace
Languages : en
Pages : 11
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Book Description
Author: Sean MacConnachie
Publisher:
ISBN: 9780660495118
Category : Fish populations
Languages : en
Pages : 0
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Book Description
Author: Thomas Gordon Brown
Publisher:
ISBN:
Category : Rare fishes
Languages : en
Pages : 29
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Book Description
Author: Stephanie Byers
Publisher:
ISBN:
Category : Endangered species
Languages : en
Pages : 70
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Author: S. MacConnachie
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: U.S. Fish and Wildlife Service. Region 6
Publisher:
ISBN:
Category : Endangered species
Languages : en
Pages : 56
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Book Description
Author: J. D. McPhail
Publisher: University of Alberta
ISBN: 0888644671
Category : Nature
Languages : en
Pages : 697
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Book Description
The threat of deteriorating habitats and a loss of biodiversity make this reference work on the freshwater fishes of British Columbia more necessary than ever before. Eighty-one comprehensive species accounts aid accurate identification and consist of an illustration, the scientific and common names of the fish, its distinguishing characteristics, taxonomic comments, geographic distribution, a life-history summary, a habitat-use summary, and conservation comments. The book is a critical resource for biologists, naturalists, management and conservation officers, anglers, and members of the public who are concerned about our natural heritage. Foreword by Joseph S. Nelson.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309092302
Category : Science
Languages : en
Pages : 337
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Book Description
The tension between wildlife protection under the Endangered Species Act and water management in the Platte River Basin has existed for more than 25 years. The Platte River provides important habitat for migratory and breeding birds, including three endangered or threatened species: the whooping crane, the northern Great Plains population of the piping plover, and the interior least tern. The leading factors attributed to the decline of the cranes are historical overhunting and widespread habitat destruction and, for the plovers and terns, human interference during nesting and the loss of riverine nesting sites in open sandy areas that have been replaced with woodlands, sand and gravel mines, housing, and roadways. Extensive damming has disrupted passage of the endangered pallid sturgeon and resulted in less suitable habitat conditions such as cooler stream flows, less turbid waters, and inconsistent flow regimes. Commercial harvesting, now illegal, also contributed to the decline of the sturgeon. Endangered and Threatened Species of the Platte River addresses the habitat requirements for these federally protected species. The book further examines the scientific aspects of the U.S. Fish and Wildlife Service's instream-flow recommendations and habitat suitability guidelines and assesses the science concerning the connections among the physical systems of the river as they relate to species' habitats.
Author: Adam Roy Batty
Publisher:
ISBN:
Category : Endangered species
Languages : en
Pages : 0
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The Speckled dace, Rhinichthys osculus, a small cyprinid species, was listed as endangered under the Canadian Species at Risk Act (SARA) in 2009. This species exists throughout the western United States, but in Canada it lives in the Kettle, West Kettle, and Granby Rivers in southern British Columbia (BC). I conducted field work in 2008 to assess the abundance, range, biology, and habitat use of this species. I estimated that there were 940,000 mature Speckled dace (90% confidence interval 412,000 - 1,955,000) in the watershed in 2008, a much larger number than previous estimates. I found that the species is longer-lived than previously thought, up to age 7-years. I recommend that the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) and the BC Conservation Data Centre re-assess this species, and that a procedure for setting conservation priorities be developed within SARA, similar to the BC Conservation Framework.
