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Grebes
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Author : Colin O'Donnel
language : en
Publisher: World Conservation Union
Release Date : 1997
Grebes written by Colin O'Donnel and has been published by World Conservation Union this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Nature categories.
Grebes are specialized waterbirds which inhabit marshlands and reed-fringed lakes. Their dependence on wetlands is total and as a result they are particularly vulnerable to changes in ecosystems and their deterioration. So adapted are they to the wetlands they inhabit that they are an ideal indicator of the health of wetlands and the changes taking place, changes often imperceptible to humans. Since c. 1970, two of the 22 recognized species of grebes have gone extinct and two others are in a critical situation. One of the greatest threats to their survival is loss of habitat. This action plan reviews the threats to grebes throughout the world and their current status and proposes a series of eight priority actions to ensure their survival.
Food And Economic Relations Of North American Grebes
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Author : Alexander Wetmore
language : en
Publisher:
Release Date : 1924
Food And Economic Relations Of North American Grebes written by Alexander Wetmore and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1924 with Grebes categories.
Grebes
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Author : Jon Fjeldså
language : en
Publisher:
Release Date : 1977
Grebes written by Jon Fjeldså and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Grebes categories.
Comparative Ecology Of Peruvian Grebes
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Author : Jon Fjeldså
language : en
Publisher:
Release Date : 1982
Comparative Ecology Of Peruvian Grebes written by Jon Fjeldså and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Grebes categories.
Grebes Of The World
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Author : Malcolm Alexander Ogilvie
language : en
Publisher:
Release Date : 2003-01
Grebes Of The World written by Malcolm Alexander Ogilvie and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-01 with Grebes categories.
Gives an introduction on the origin, evolution, distribution, physiology and behaviour of grebes, followed by accounts of each of the 22 species. This work provides information on distribution, population, behaviour and other aspects for each account. It also includes two identification plates which help in identifying their features in the field.
The Grebe
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Author : Philippine Heering
language : en
Publisher:
Release Date : 1980-01-01
The Grebe written by Philippine Heering and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980-01-01 with Grebes categories.
Working Bibliography Of The Grebes Of The World
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Author : J. J. Vlug
language : en
Publisher:
Release Date : 1990
Working Bibliography Of The Grebes Of The World written by J. J. Vlug and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Grebes categories.
The Great Crested Grebe
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Author : K.E.L. Simmons
language : en
Publisher: Shire Publications
Release Date : 1989
The Great Crested Grebe written by K.E.L. Simmons and has been published by Shire Publications this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Great crested grebe categories.
Breeding Ecology Of The Horned Grebe Podiceps Auritus In Subarctic Wetlands
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Author : Michael A. Fournier
language : en
Publisher: [Ottawa]: Canadian Wildlife Service
Release Date : 1999
Breeding Ecology Of The Horned Grebe Podiceps Auritus In Subarctic Wetlands written by Michael A. Fournier and has been published by [Ottawa]: Canadian Wildlife Service this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Science categories.
Describes investigations into the breeding of the horned grebe, Podiceps auritus, carried out on a 38 square kilometre study area near Yellowknife, Northwest Territories. The investigators monitored population size and productivity during 1986-96. Other aspects of breeding biology were studied in 1986, 1989, 1991, and 1992, including date of spring arrival and habitat selection.
Comparative Ecology Of The Australasian Grebes Aves
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Author : Jon Fjeldså
language : en
Publisher:
Release Date : 1988
Comparative Ecology Of The Australasian Grebes Aves written by Jon Fjeldså and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Grebes categories.