The Role of Marine Resources in Arctic Fox Population Dynamics PDF Download
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Author: James David Roth
Publisher:
ISBN:
Category :
Languages : en
Pages : 224
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Book Description
Author: James David Roth
Publisher:
ISBN:
Category :
Languages : en
Pages : 224
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Book Description
Author: Nicky Huys
Publisher: Nicky Huys
ISBN:
Category : Juvenile Nonfiction
Languages : en
Pages : 68
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Book Description
"The Arctic Nomad: The Arctic Fox" delves into the captivating world of one of nature's most elusive and resilient creatures. Through stunning photography and insightful narrative, this book chronicles the extraordinary journey of the Arctic fox as it navigates the harsh yet breathtakingly beautiful Arctic landscape. From its nomadic lifestyle and remarkable survival instincts to its integral role in the delicate balance of the Arctic ecosystem, this book offers a compelling portrayal of a creature that embodies adaptability and tenacity in the face of extreme conditions. Immerse yourself in the captivating narrative and mesmerizing imagery that capture the essence of the Arctic fox's untamed spirit and the awe-inspiring wilderness it calls home.
Author: Megan Dudenhoeffer
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Climate-caused changes in prey abundance are altering predator-prey dynamics and food webs throughout the Arctic. Lemmings are important prey for many terrestrial Arctic predators and their annual population fluctuations drive reproduction and population dynamics of predators like Arctic foxes (Vulpes lagopus). Warmer winters throughout the Arctic have decreased snowpack quality, preventing lemmings from reaching their previous high abundances, which may reduce their impact on predator dynamics. Recent evidence suggests that the population of Arctic foxes near Churchill, Manitoba is declining, possibly due damped lemming abundances. I used DNA from non-invasively collected fecal samples to reconstruct Arctic fox winter diet and identify alternative prey consumption over years of varying lemming abundance. Using 644 fecal samples collected during April 2011-2018 and next generation sequencing, I found Arctic fox winter diet is driven by lemming abundance, despite lemming cycle damping. Lemming abundance negatively influenced the consumption of alternative prey such as marine resources. Additionally, Arctic fox winter diet included high proportions of meadow voles (Microtus pennsylvanicus), which were not detected on the coastal tundra prior to 2010, suggesting that climate change may be changing prey composition in the low Arctic. Fecal DNA also offers an alternative non-invasive solution to traditional mark-recapture methods for estimating wildlife populations, so I developed non-invasive sampling protocols for a population estimate of Arctic foxes. Specifically, I extracted DNA from Arctic fox fecal samples (n=19) collected in March-April 2019 and compared amplification rates between samples of various ages. I found no difference in amplification rates indicating that additional resources do not need to be allocated to field collection of fresh samples. This study provides practical information for future population estimate of Arctic foxes in western Hudson Bay. Additionally, this information can be applied to other studies focusing on molecular monitoring of terrestrial Arctic carnivores. Understanding changes in trophic interactions, and subsequent species population dynamics, in the Arctic may aid our ability to predict whether terrestrial Arctic predators will be able to accommodate continued climate-changes.
Author: Jean-Pierre L. Savard
Publisher: CRC Press
ISBN: 1482248980
Category : Nature
Languages : en
Pages : 604
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Book Description
The past decade has seen a huge increase in the interest and attention directed toward sea ducks, the Mergini tribe. This has been inspired, in large part, by the conservation concerns associated with numerical declines in several sea duck species and populations, as well as a growing appreciation for their interesting ecological attributes. Reflec
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 862
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Book Description
Author: Niels Vestergaard
Publisher: Springer
ISBN: 3319673653
Category : Technology & Engineering
Languages : en
Pages : 242
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Book Description
This book is based on presentations from the Conference ‘Arctic Marine Resource Governance’ held in Reykjavik Iceland in October 2015. The book is divided into four main themes: 1. Global management and institutions for Arctic marine resources 2. Resource stewards and users: local and indigenous co-management 3. Governance gaps in Arctic marine resource management and 4. Multi-scale, ecosystem-based, Arctic marine resource management’. The ecosystem changes underway in the Arctic region are expected to have significant impacts on living resources in both the short and long run, and current actions and policies adopted over such resource governance will have serious and ultimately irreversible consequences in the near and long terms.
Author: Garry Hamilton
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 238
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Book Description
Photographs and text are used to describe the life of arctic foxes, and provides information on how the species has adapted and evolved to survive the harsh climates of the far north.
Author: David N. Thomas
Publisher: John Wiley & Sons
ISBN: 1118846540
Category : Science
Languages : en
Pages : 468
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Book Description
The Arctic is often portrayed as being isolated, but the reality is that the connectivity with the rest of the planet is huge, be it through weather patterns, global ocean circulation, and large-scale migration patterns to name but a few. There is a huge amount of public interest in the ‘changing Arctic’, especially in terms of the rapid changes taking place in ecosystems and exploitation of resources. There can be no doubt that the Arctic is at the forefront of the international environmental science agenda, both from a scientific aspect, and also from a policy/environmental management perspective. This book aims to stimulate a wide audience to think about the Arctic by highlighting the remarkable breadth of what it means to study its ecology. Arctic Ecology seeks to systematically introduce the diverse array of ecologies within the Arctic region. As the Arctic rapidly changes, understanding the fundamental ecology underpinning the Arctic is paramount to understanding the consequences of what such change will inevitably bring about. Arctic Ecology is designed to provide graduate students of environmental science, ecology and climate change with a source where Arctic ecology is addressed specifically, with issues due to climate change clearly discussed. It will also be of use to policy-makers, researchers and international agencies who are focusing on ecological issues and effects of global climate change in the Arctic. About the Editor David N. Thomas is Professor of Arctic Ecosystem Research in the Faculty of Biological and Environmental Sciences, University of Helsinki. Previously he spent 24 years in the School of Ocean Sciences, Bangor University, Wales. He studies marine systems, with a particular emphasis on sea ice and land-coast interactions in the Arctic and Southern Oceans as well as the Baltic Sea. He also edited a related book: Sea Ice, 3rd Edition (2017), which is also published by Wiley-Blackwell.
Author: Donna Naughton
Publisher: University of Toronto Press
ISBN: 1442622326
Category : Nature
Languages : en
Pages : 688
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Book Description
This selection features the sections on hoofed animals, including horses, moose, deer, bison, sheep, and more. The Natural History of Canadian Mammals is a beautifully illustrated, up-to-date guide to all 215 known species of mammals in Canada. It features brand-new, full-colour images of each species, as well as stunning photographs from Canadian Geographic magazine’s national photography competitions depicting the animals in their natural environments. Along with being a visual treat, this book is jam-packed with information accessible to readers at all levels. Detailed descriptions are provided of each mammal’s appearance, habitat, and behavior, while colour maps show their full distribution across Canada, North America, and globally. The book also includes practical guides on tracking and identification for readers who would like to learn how to spot mammals in the wild. Among its most special features is a series of colour plates with vignettes of the Canadian representatives of each group, sized relative to one another for easy comparison and linked to the full species accounts later in the book.
Author: Simmonds, M.P
Publisher: Jones & Bartlett Publishers
ISBN: 0763783447
Category : Nature
Languages : en
Pages : 364
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Book Description
The charismatic mammals that live in the ocean are a constant source of interest, both for scientists and our society at large. Their biology, behavior, and conservation are of utmost importance, as a vast number of species are currently threatened. Intended for the upper-level undergraduate or graduate student within biology, marine biology, or conservation/environmental science, An Introduction to Marine Mammal Biology and Conservation provides a broad introduction to marine mammal biology using cutting edge information and student-friendly learning tools. The text begins with chapters on the evolution and classification of marine mammals and their general biology. It moves on to discuss the behavior and ecology of different groups of marine mammals, such as polar bears, otters, and cetaceans. Part 3 dives into many different conservation issues facing marine mammals, as well as discussions on how they can be addressed. Closing chapters provide information on how scientists study marine mammals, how society can enjoy observing the animals while making sure they are preserved, and a word to students looking to pursue a career with marine mammals.
