Habitat Use by the Porcupine Caribou Herd During Predicted Mosquito Harassment PDF Download
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Author:
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ISBN:
Category :
Languages : en
Pages : 29
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Author:
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ISBN:
Category :
Languages : en
Pages : 29
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Author: Donald Edmund Russell
Publisher:
ISBN:
Category : Caribou
Languages : en
Pages : 165
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"The primary objective of this study was to define and identify critical caribou habitat in northern Yukon (ie. north of treeline) in order to better predict impact of any human activity on caribou. A comprehensive ecological approach was used to first of all define "critical" habitat. Caribou movement and behavior was related to the "need to feed" and the "need to avoid insects". 1. Historical and recent movements and distribution of the herd pointed to the importance of the Richardson Mountains and the Muskeg Basin regions of the northern Yukon during summer insect season. Radio-tracking relocations pointed to the frequent fracturing and reformation of large aggregations during the insect season and the constant movement of these groups. 2. Our assessment of the regional distribution of vegetation communities has shown that the Blow River valley and the valleys of the Richardson Mountains support lush vegetation. ...3. Our study of mosquito activity ... showed that mosquito activity peaks the second week of July and declines thereafter, .... 4. Our documentation of regional weather in 1986 revealed the regional influence of warm, moist northeasterly flows from interior Alaska and the cool southwesterly flows from the Beaufort Sea. Our study appeared to lie within the area of conflict between these two systems, resulting in dynamic weather patterns that can and are exploited by the caribou. ... 5. Our study of caribou behaviour response to insect harassment revealed the importance of defense strategies such as forming large dense groups when insects are active, and the advantage gained by individuals in the core or windward side of a group. 6. Caribou activity budgets indicated that insect harassment had the most profound effect of reducing lying and feeding at the expense of standing. ... The study provides the baseline information on the use of the region by the Porcupine caribou herd during the summer period, and combined with our knowedge of caribou/human interactions from related studies, puts us in an excellent position to help guide industrial development. ... The study provides the baseline informaion on the use of the region by the Porcupine caribou herd during the summer period, and combined with our knowledge of caribou/human interactions from related studies, puts us in an excellent position to help guide industrial development"--ASTIS [online] database.
Author: R. N. Gibson
Publisher: CRC Press
ISBN: 0203180593
Category : Science
Languages : en
Pages : 693
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Book Description
Interest in oceanography and marine biology and its relevance to global environmental issues continues to increase, creating a demand for authoritative reviews that summarize recent research. Oceanography and Marine Biology: An Annual Review has catered to this demand since its foundation, by the late Harold Barnes, more than 40 years ago. It is an
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Category : Ecology
Languages : en
Pages : 944
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Author: Mark P. Glazer
Publisher: Nova Publishers
ISBN: 9781600211713
Category : Business & Economics
Languages : en
Pages : 212
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Book Description
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.
Author: Garik Gutman
Publisher: Springer Science & Business Media
ISBN: 9048191181
Category : Science
Languages : en
Pages : 322
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This volume is a compilation of studies on interactions of land-cover/land-use change with climate in a region where the climate warming is most pronounced compared to other areas of the globe. The climate warming in the far North, and in the Arctic region of Northern Eurasia in particular, affects both the landscape and human activities, and hence human dimensions are an important aspect of the topic. Environmental pollution together with climate warming may produce irreversible damages to the current Arctic ecosystems. Regional land-atmosphere feedbacks may have large global importance. Remote sensing is a primary tool in studying vast northern territories where in situ observations are sporadic. State-of-the-art methods of satellite remote sensing combined with GIS and models are used to tackle science questions and provide an outlook of current land-cover changes and potential scenarios for the future. Audience: The book is a truly international effort involving U.S. and European scientists. It is directed at the broad science community including graduate students, academics and other professionals in this field.
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Category : Wildlife conservation
Languages : en
Pages : 702
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Author: Barbara T. Lieland
Publisher: Nova Publishers
ISBN: 9781594547300
Category : Nature
Languages : en
Pages : 126
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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.
Author: Donald Edmund Russell
Publisher:
ISBN:
Category :
Languages : en
Pages :
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"This report briefly summarizes the results of the third summer field season, designed to provide baseline information for the potential development of Beaufort Sea oil and gas reserves. In the initial two field seasons, research focussed on documenting the distribution, movement patterns and habitat selection of the herd during insect season. As well, the role of insect harassment in influencing activity patterns and overt behaviour was documented in detail. In this third field season our objectives were to document the biophysical factors that influenced the patterns observed in the previous field seasons. Our objective was to construct a vegetation map for the study area using classification system that was particularly meaningful for caribou. In addition, we documented regional weather patterns, in an attempt to relate regional patterns to potential insect harassment levels. We also documented caribou movement and distribution in July and early August"--Leaf 2.
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Category : Earth movements
Languages : en
Pages : 480
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