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Breeding Distribution And Population Trends Of The Great Blue Heron In Quebec 1977 2001
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Book Synopsis Breeding Distribution and Population Trends of the Great Blue Heron in Quebec, 1977-2001 by : Jean-Luc DesGranges
Download or read book Breeding Distribution and Population Trends of the Great Blue Heron in Quebec, 1977-2001 written by Jean-Luc DesGranges and published by . This book was released on 2006 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Regular surveys of Great Blue Heron (Ardea herodias) colonies in Quebec, conducted between 1977 and 2001, resulted in the discovery of 705 colonies, mostly in the western part of the province. While single breeding pairs were occasionally found (9% of Quebec "heronries"), the colonies were generally composed of fewer than 16 breeding pairs, with sometimes over 50 (18 known colonies), as was the case on several islands in the St. Lawrence River. Close to one-third (1919 of the 6481 active nests) of the Quebec Great Blue Heron population was associated with heronries in the St. Lawrence system. Half of the St. Lawrence heronries that were active during two adjacent survey periods (1975-1983 and 1984-1990, or 1984-1990 and 1991-2001) increased in size between periods, while one-third of the colonies decreased in size. One-sixth of the colonies remained the same size during the study period. Great Blue Herons periodically abandon their colonies and settle elsewhere. Our data show that 50% of known Quebec colonies (n = 377 colonies visited more than once) were abandoned after being discovered as active colonies, and, on average, all nests in colonies that are abandoned disappear 7 years after discovery of the colony. On the basis of thorough inventories conducted on the St. Lawrence, we found that all nest platforms in 14 of the 70 colony sites had disappeared in less than 25 years. Since 1977, when regular surveys began, 50-90% of breeding attempts have been successful, yielding an average of over 2.2 chicks per pair. This productivity rate suggests that the Quebec population of Great Blue Herons may be increasing and may explain the recent expansion in its range. Following our 25 years of investigation on the Great Blue Heron in the province, we estimate the current late-summer Great Blue Heron population of Quebec at some 27 000 individuals (6500 pairs producing 2.2 young per pair per year).--Publisher's description.
Book Synopsis Geographic Distribution of Selected Contaminants in Great Blue Herons from the St. Lawrence River System, Québec (1989-1994) by : Jean-Luc DesGranges
Download or read book Geographic Distribution of Selected Contaminants in Great Blue Herons from the St. Lawrence River System, Québec (1989-1994) written by Jean-Luc DesGranges and published by . This book was released on 2009 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effects on Lowland Habitat, Breeding Shorebirds and Songbirds in the Banks Island Migratory Bird Sanctuary Number 1 by the Growing Colony of Lesser Snow Geese (Chen Caerulescens Caerulescens) by : James Edward Hines
Download or read book The Effects on Lowland Habitat, Breeding Shorebirds and Songbirds in the Banks Island Migratory Bird Sanctuary Number 1 by the Growing Colony of Lesser Snow Geese (Chen Caerulescens Caerulescens) written by James Edward Hines and published by . This book was released on 2010 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes the characteristics, abundance and condition of vegetation communities within and around the lesser snow goose colony and examines the effects of the colony on the abundance of breeding shorebirds and songbirds.
Book Synopsis An Ecological Risk Assessment of Fish-eating Birds Exposed to Polychlorinated Dibenzofurans and Dibenzo-P-dioxins Within the Tittabawassee River Floodplain, MI, USA by : Rita Marie Seston
Download or read book An Ecological Risk Assessment of Fish-eating Birds Exposed to Polychlorinated Dibenzofurans and Dibenzo-P-dioxins Within the Tittabawassee River Floodplain, MI, USA written by Rita Marie Seston and published by . This book was released on 2010 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Detection and Classification of Land Cover Classes of Southampton Island, Nunavut, Using Landsat ETM+ Data by : Alain J. Fontaine
Download or read book Detection and Classification of Land Cover Classes of Southampton Island, Nunavut, Using Landsat ETM+ Data written by Alain J. Fontaine and published by . This book was released on 2011 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Productivity of Lesser Snow Geese on Banks Island, Northwest Territories, Canada, in 1995-1998 by : Gustaf Samelius
Download or read book Productivity of Lesser Snow Geese on Banks Island, Northwest Territories, Canada, in 1995-1998 written by Gustaf Samelius and published by . This book was released on 2008 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: "We estimated that 264 000-452 000 Lesser Snow Geese Chen caerulescens caerulescens nested at Egg Riveron Banks Island, Northwest Territories, in 1995-1998. This was about twice as many geese as was reported nesting there in the 1980s, and we estimated that the nesting population grew by 4.2% per year from 1953 to 1998"--Abstract.
Book Synopsis Key Migratory Bird Terrestrial Habitat Sites in the Northwest Territories and Nunavut by : Paul Bernard Latour
Download or read book Key Migratory Bird Terrestrial Habitat Sites in the Northwest Territories and Nunavut written by Paul Bernard Latour and published by . This book was released on 2008 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes key terrestrial habitat areas that are essential to the welfare of various migratory bird species in Canada.
Book Synopsis Ecological Regions of North America by :
Download or read book Ecological Regions of North America written by and published by . This book was released on 1997 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume represents a first attempt at holistically classifying and mapping ecological regions across all three countries of the North American continent. A common analytical methodology is used to examine North American ecology at multiple scales, from large continental ecosystems to subdivisions of these that correlate more detailed physical and biological settings with human activities on two levels of successively smaller units. The volume begins with an overview of North America from an ecological perspective, concepts of ecological regionalization. This is followed by descriptions of the 15 broad ecological regions, including information on physical and biological setting and human activities. The final section presents case studies in applications of the ecological characterization methodology to environmental issues. The appendix includes a list of common and scientific names of selected species characteristic of the ecological regions.
Book Synopsis Current Ornithology Volume 17 by : Charles F. Thompson
Download or read book Current Ornithology Volume 17 written by Charles F. Thompson and published by Springer Science & Business Media. This book was released on 2010-09-09 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current Ornithology publishes authoritative, up-to-date, scholarly reviews of topics selected from the full range of current research in avian biology. Topics cover the spectrum from the molecular level of organization to population biology and community ecology. The series seeks especially to review (1) fields in which an abundant recent literature will benefit from synthesis and organization, or (2) newly emerging fields that are gaining recognition as the result of recent discoveries or shifts in perspective, or (3) fields in which students of vertebrates may benefit from comparisons of birds with other classes. All chapters are invited, and authors are chosen for their leadership in the subjects under review.
Book Synopsis Birds of Aruba, Curacao and Bonaire by : Bart de Boer
Download or read book Birds of Aruba, Curacao and Bonaire written by Bart de Boer and published by Bloomsbury Publishing. This book was released on 2020-01-23 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first ever comprehensive field guide dedicated to the birds of the Netherlands Antilles. Located in the southern Caribbean off the coast of Venezuela, the islands of Aruba, Curaçao and Bonaire are popular tourist destinations. This compact, portable guide is designed to help identify the many wonderful birds that live there. The book features colour illustrations and descriptions of every species known to occur naturally on the islands. - First-ever comprehensive field guide to the birds of the western Lesser Antilles - Complete coverage of the islands including residents, migrants and vagrants - 1,000 illustrations on 71 colour plates, depicting every species and most plumages and races - Concise text on facing pages highlights key identification features, including voice, habitat, behaviour and status
Book Synopsis Atlas of Breeding Birds of the Maritime Provinces by : Anthony J. Erskine
Download or read book Atlas of Breeding Birds of the Maritime Provinces written by Anthony J. Erskine and published by Nimbus Pub Limited. This book was released on 1992-01-01 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Atlas features over 200 maps that provide information on breeding distribution, population, and natural history, with a forecast of each species' prospects for the future.
Book Synopsis Habitats and Biota of the Gulf of Mexico: Before the Deepwater Horizon Oil Spill by : C. Herb Ward
Download or read book Habitats and Biota of the Gulf of Mexico: Before the Deepwater Horizon Oil Spill written by C. Herb Ward and published by Springer. This book was released on 2017-06-26 with total page 891 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is open access under a CC BY-NC 2.5 license. The Gulf of Mexico is an open and dynamic marine ecosystem rich in natural resources but heavily impacted by human activities, including agricultural, industrial, commercial and coastal development. The Gulf of Mexico has been continuously exposed to petroleum hydrocarbons for millions of years from natural oil and gas seeps on the sea floor, and more recently from oil drilling and production activities located in the water near and far from shore. Major accidental oil spills in the Gulf are infrequent; two of the most significant include the Ixtoc I blowout in the Bay of Campeche in 1979 and the Deepwater Horizon Oil Spill in 2010. Unfortunately, baseline assessments of the status of habitats and biota in the Gulf of Mexico before these spills either were not available, or the data had not been systematically compiled in a way that would help scientists assess the potential short-term and long-term effects of such events. This 2-volume series compiles and summarizes thousands of data sets showing the status of habitats and biota in the Gulf of Mexico before the Deepwater Horizon Oil Spill. Volume 2 covers historical data on commercial and recreational fisheries, with an analysis of marketing trends and drivers; ecology, populations and risks to birds, sea turtles and marine mammals in the Gulf; and diseases and mortalities of fish and other animals that inhabit the Gulf of Mexico.
Book Synopsis Mammals and Birds as Bioindicators of Trace Element Contaminations in Terrestrial Environments by : Elżbieta Kalisińska
Download or read book Mammals and Birds as Bioindicators of Trace Element Contaminations in Terrestrial Environments written by Elżbieta Kalisińska and published by Springer. This book was released on 2019-03-01 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt: The population explosion that began in the 1960s has been accompanied by a decrease in the quality of the natural environment, e.g. pollution of the air, water and soil with essential and toxic trace elements. Numerous poisonings of people and animals with highly toxic anthropogenic Hg and Cd in the 20th century prompted the creation of the abiotic environment, mainly in developed countries. However, the system is insufficient for long-term exposure to low concentrations of various substances that are mainly ingested through food and water. This problem could be addressed by the monitoring of sentinels – organisms that accumulate trace elements and as such reflect the rate and degree of environmental pollution. Usually these are long-lived vertebrates – herbivorous, omnivorous and carnivorous birds and mammals, especially game species. This book describes the responses of the sentinels most commonly used in ecotoxicological studies to 17 trace elements.
Book Synopsis Field Manual of Wildlife Diseases by :
Download or read book Field Manual of Wildlife Diseases written by and published by Geological Survey (USGS). This book was released on 1999 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Birds as Monitors of Environmental Change by : R.W. Furness
Download or read book Birds as Monitors of Environmental Change written by R.W. Furness and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Birds as Monitors of Environmental Change looks at how bird populations are affected by pollutants, water quality, and other physical changes and how this scientific knowledge can help in predicting the effects of pollutants and other physical changes in the environment.
Book Synopsis Living Marine Legacy of Gwaii Haanas by : Anne Harfenist
Download or read book Living Marine Legacy of Gwaii Haanas written by Anne Harfenist and published by [Halifax, N.S.] : Parks Canada. This book was released on 2002-01-01 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Wildlife Habitats in Managed Forests by : Jack Ward Thomas
Download or read book Wildlife Habitats in Managed Forests written by Jack Ward Thomas and published by . This book was released on 1979 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: That is what this book is about. It is a framework for planning, in which habitat is the key to managing wildlife and making forest managers accountable for their actions. This book is based on the collective knowledge of one group of resource professionals and their understanding about how wildlife relate to forest habitats. And it provides a longoverdue system for considering the impacts of changes in forest structure on all resident wildlife.
