Download or read book Forage Site Selection by Lesser Snow Geese During Autumn Staging on the Arctic National Wildlife Refuge Alaska written by Jerry W. Hupp and published by . This book was released on 1998 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Arctic National Wildlife Refuge ANWR written by Barbara T. Lieland and published by Nova Publishers. This book was released on 2006 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Arctic National Wildlife Refuge (ANWR) consists of 19 million acres in north-east Alaska. It is administered by the Fish and Wildlife Service (FWS) in the Department of the Interior (DOI). It is a 1.5 million acre coastal plain on the North Slope of the Brooks Range that is currently viewed as one of the most likely undeveloped US onshore oil and gas prospects. According to the US Geological Survey, there is even a small chance that taken together, the fields on this federal land could hold as much economically recoverable oil as the giant field at Prudhoe Bay, found in 1967 on the coastal plain west of ANWR. That state-owned portion of the coastal plain is now estimated to have held 11-13 billion barrels of oil. The Refuge, and especially the coastal plain, is home to a wide variety of plants and animals. The presence of caribou, polar bears, grizzly bears, wolves, migratory birds, and many other species in a nearly undisturbed state has led some to call the area America's 'Serengeti'. The Refuge and two neighbouring parks in Canada have been proposed for an international park, and several species found in the area (including polar bears, caribou, migratory birds, and whales) are protected by international treaties or agreements. The analysis in this book covers, first, the economic and geological factors that have triggered new interest in development, followed by the philosophical, biological, and environmental quality factors that have triggered opposition to it. The book begins with a review of the nature and issues of the ANWR.
Download or read book New Frontiers in Environmental Research written by Mark P. Glazer and published by Nova Publishers. This book was released on 2006 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: The environment is considered the surroundings in which an organism operates, including air, water, land, natural resources, flora, fauna, humans and their interrelation. It is this environment which is both so valuable, on the one hand, and so endangered on the other. And it is people which are by and large ruining the environment both for themselves and for all other organisms. This book reviews the latest research in this field which is vital for everyone.
Download or read book Arctic National Wildlife Refuge written by Barbara T. Lieland and published by Nova Science Publishers. This book was released on 2009 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Renowned for its wildlife, Arctic Refuge is inhabited by 45 species of land and marine mammals, ranging from the pygmy shrew to the bowhead whale. Best known are the polar, grizzly, and black bear; wolf, wolverine, Dall sheep, moose, muskox, and the animal that has come to symbolise the area's wildness, the free-roaming caribou. Thirty-six species of fish occur in Arctic Refuge waters, and 180 species of birds have been observed on the refuge. Eight million acres of the Arctic Refuge are designated Wilderness, and three rivers (Sheenjek, Wind, and Ivishak) are designated Wild Rivers. Two areas of the refuge are designated Research Natural Areas. Because of distinctive scenic and scientific features, several rivers, valleys, canyons, lakes, and a rock mesa have been recommended as National Natural Landmarks. Perhaps the most unique feature of the refuge is that large-scale ecological and evolutionary processes continue here, free of human control or manipulation. A prominent reason for establishment of the Arctic Refuge was the fact that this single protected area encompasses an unbroken continuum of arctic and sub arctic ecosystems. Here, one can traverse the boreal forest of the Porcupine River plateau, wander north up the rolling tiaga uplands, cross the rugged, glacier-capped Brooks Range, and follow any number of rivers across the tundra coastal plain to the lagoons, estuaries, and barrier islands of the Beaufort Seas coast, all without encountering an artefact of civilisation. The refuge encompasses the traditional homelands and subsistence areas of Inupiaq Eskimos of the arctic coast and the Athabascan Indians of the interior.
Download or read book Biological Science Report written by and published by . This book was released on 1995 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecological Scale and Forest Development written by Andrew B. Carey and published by . This book was released on 1999 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Identification and Synthetic Modeling of Factors Affecting American Black Duck Populations written by Michael James Conroy and published by . This book was released on 2002 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Reduction of Wolves in the Yukon written by Robert D. Hayes and published by . This book was released on 2003 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: "We conducted a large-scale, controlled experiment to study the responses of declining woodland caribou (Rangifer tarandus), moose (Alces alces), and Dall sheep (Ovis dalli) to a 5-year reduction in wolf (Canis lupus) numbers in the Aishihik area in the southwestern Yukon"--Page 1
Download or read book Survival and Brood Rearing Ecology of Emperor Geese written by Joel A. Schmutz and published by . This book was released on 2000 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Emperor Geese (Chen canagica) breed on the Yukon-Kuskokwim Delta in an area inhabited by three other goose species. Whereas populations of other geese increased since the mid 1980s, Emperor Goose numbers remained low. Because survival and habitat selection by broods of Emeperor Geese had not been studied previously and numbers of predatory Glaucous Gulls (Larus hyperboreus) had recently increased, I studied brood rearing ecology of Emperor Geese during 1993-1996 to assess whether this seasonal period could be limiting population growth. Survival of goslings to 30 days varied among years from 0.32 to 0.70 and was primarily influenced by mortality during the first five days after hatch. Other goose species with similar rates of gosling survival are increasing rapidly. Survival of Emperor Goose goslings was lowest in 1994, when unusually heavy rainfall occurred during early brood rearing. Using a long-term data set from Izembek National Wildlife Refuge, sizes of families in fall (n=23 years) were related to rainfall during early brood rearing. Gosling survival was lower and gull disturbance of broods greater in 1993-1994 than in 1995-1996. Although goslings wer commonly consumed by Glaucous Gulls, gull diets during 1993 were similar to those observed in the 1970s. Across a broad scale, broods of Emperor Geese (n=56) strongly selected habitats dominated by Carex subspathaceae, Carex ramenskii, and unvegetated areas interspersed among these forage species, as determined from telemetry. These selected habitats comprised one-third of all available habitat. Habitat selection by the composite goose community (dominated by Cackling Canada Geese [Branta canadensis minima]) was assessed by feces collections and differed substantially from that of Emperor Geese. Broods of Emperor Geese spent more time feeding during 1993-1996 than during an earlier study in 1985-1986. During 1994-1996, feeding rates of gosling and adult females was related more to total goose density than to Emperor Goose density. Although Cackling Canada Geese exhibited strongest selection of other habitats, their greater overall abundance resulted in numerical equivalence to Emperor Geese in habitats preferred by Emperor Geese. Interspecific competition for food has impacted behavior in Emperor Geese, which may impact growth and survival of juvenile geese"--Leaves 3-4
Download or read book Seasonal Movements Migratory Behavior and Site Fidelity of West Indian Manatees Along the Atlantic Coast of the United States written by Wildlife society (Etats-Unis). and published by . This book was released on 2003 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Summer autumn Nutrition and Parturition Date on Reproduction and Survival of Elk written by and published by . This book was released on 2004 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spatially Explicit Influences on Northern Goshawk Nesting Habitat in the Interior Pacific Northwest written by Michael T. McGrath and published by . This book was released on 2003 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: "We compared northern goshawk (Accipiter gentilis atricapillus) nesting habitat within 1 ha of nest sites and at landscape scales of 10, 30, 60, 83, 120, 150, and 170 ha in 4 studies areas east of the Cascade Mountains in Oregon and Washington. Our objective was to describe goshawk nesting habitat at biologically relevant scales and to develop models capable of assessing the effects of forest management alternatives on habitat suitability"--Page 1.
Download or read book Cumulative Effects of Human Developments on Arctic Wildlife written by Chris J. Johnson and published by . This book was released on 2005 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Recent discoveries of diamondiferous kimberlite deposits in the Canadian central Arctic led to unprecedented levels of mineral exploration and development. The cumulative effects of such activities are an issue of concern for government regulatory agencies, regional and international conservation organizations, wildlife managers, and indigenous peoples. We investigated the impacts of human activities and associated infrastructure on the distribution of Arctic wildlife square km of the Taiga Shield and Southern Arctic ecozones 400 km northeast of Yellowknife, Northwest Territories, Canada"--page 1.
Download or read book Natal and Breeding Dispersal of Northern Spotted Owls written by and published by . This book was released on 2002 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bioenergetics and Nutrition of Mississippi Valley Population Canada Geese During Winter and Migration written by Robert John Gates and published by . This book was released on 2001 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Waterfowl Ecology and Management written by Guy A. Baldassarre and published by Krieger Publishing Company. This book was released on 2006 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: Baldaserre & Bolen addresses several aspects of waterfowl ecology and management. This second edition includes 16 'infoboxes, ' which are stand-alone inserts in the various chapters. The infoboxes present information on important waterfowl people, places, and issues
Download or read book Population Biology of the Indo Pacific Hump backed Dolphin in Hong Kong Waters written by Thomas A. Jefferson and published by . This book was released on 2000 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
