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Full-Text Articles in Life Sciences

Ethical Foundations For The Lethal Management Of Double-Crested Cormorants (Phalocrocorax Auritus) In The Eastern United States: An Argument Analysis, Chelsea Batavia, Michael Paul Nelson Jun 2018

Ethical Foundations For The Lethal Management Of Double-Crested Cormorants (Phalocrocorax Auritus) In The Eastern United States: An Argument Analysis, Chelsea Batavia, Michael Paul Nelson

Ethics and Conservation Biology Collection

Lethal management of Double-crested Cormorants (Phalocrocorax auritus) has been implemented in many areas of the United States. In this paper, the philosophical method of argument analysis is used to assess ethical premises underlying the proposition that Double-crested Cormorant populations should be culled to reduce pressures on wild fisheries in the Great Lakes region of the eastern USA. This influential argument has been used to justify the destruction of more than half a million Double-crested Cormorants and hundreds of thousands of their nests and eggs. Three versions of the argument are formulated and assessed. It is shown that each of the …


Confronting Uncertainty In Wildlife Management: Performance Of Grizzly Bear Management, Kyle A. Artelle, Sean C. Anderson, Andrew B. Cooper, Paul C. Paquet, John D. Reynolds, Chris T. Darimont Nov 2013

Confronting Uncertainty In Wildlife Management: Performance Of Grizzly Bear Management, Kyle A. Artelle, Sean C. Anderson, Andrew B. Cooper, Paul C. Paquet, John D. Reynolds, Chris T. Darimont

Wildlife Population Management Collection

Scientific management of wildlife requires confronting the complexities of natural and social systems. Uncertainty poses a central problem. Whereas the importance of considering uncertainty has been widely discussed, studies of the effects of unaddressed uncertainty on real management systems have been rare. We examined the effects of outcome uncertainty and components of biological uncertainty on hunt management performance, illustrated with grizzly bears (Ursus arctos horribilis) in British Columbia, Canada. We found that both forms of uncertainty can have serious impacts on management performance. Outcome uncertainty alone – discrepancy between expected and realized mortality levels – led to excess mortality in …


Integrating Values And Ethics Into Wildlife Policy And Management—Lessons From North America, Camilla H. Fox, Marc Bekoff Mar 2011

Integrating Values And Ethics Into Wildlife Policy And Management—Lessons From North America, Camilla H. Fox, Marc Bekoff

Conservation Collection

Few animals provoke as wide a range of emotions as wolves. Some see wolves as icons of a lost wilderness; others see them as intruders. As the battle continues between wolf proponents and opponents, finding solutions that resolve conflicts while supporting the integrity of nature is challenging. In this essay we argue that we need to make room for wolves and other native carnivores who are re-colonizing areas from which they were extirpated. Strategies that foster coexistence are necessary and wildlife agencies must consider all stakeholders and invest adequate resources to inform the public about how to mitigate conflicts between …


The Ethics Of Wildlife Control In Humanized Landscapes, John Hadidian, Camilla H. Fox, William S. Lynn Jan 2006

The Ethics Of Wildlife Control In Humanized Landscapes, John Hadidian, Camilla H. Fox, William S. Lynn

Ecology Collection

The 21st century is witness to an unprecedented and rapid growth of human settlements, from urban centers to wilderness vacation resorts. Concurrent with this has been the growing tolerance and acceptance of many wild animals and humans for one another. This has created an expanding ‘zone’ of human-animal contacts, some number of which invariably result in conflicts. While the vast majority of our interactions with wild animals are undoubtedly benign, it is the conflict between wildlife and people that draws particularly close attention from the public. Animals viewed as vertebrate “pests” range from the small to the large, the timid …


Urban Wildlife Control: It Starts In Our Own Backyard, John Hadidian Jan 2001

Urban Wildlife Control: It Starts In Our Own Backyard, John Hadidian

Conservation Collection

No abstract provided.


Urban Wildlife, John Hadidian, Sydney Smith Jan 2001

Urban Wildlife, John Hadidian, Sydney Smith

State of the Animals 2001

Despite the potential for difficulty, there are several reasons why urban wildlife should be valued and better understood. First is its scientific and heuristic value. Urban wildlife populations are essentially parts of ongoing natural experiments in adaptation to anthropogenic stress. How urban animals are affected by human activities— and how they cope with them— can represent, on a highly accelerated scale, a model of what is happening to species in other biomes. No other wild animals live in such intimate contact and under such constant constraint from human activities as do synanthropes. Second, urban animals are exposed to many environmental …


The Case For Hunting, William L. Robinson Jan 1986

The Case For Hunting, William L. Robinson

Hunting Collection

My purpose at this symposium is to present the case for hunting. I am a wildlife ecologist by training and profession, and I am also a hunter. As a hunter, I am sensitive to criticisms of this pursuit, as any hunter should be. Some people question how, with knowledge of the nature and functioning of ecological systems, I can go out with a gun and kill grouse, ducks, and deer. I respond that, indeed, my understanding of ecology and the nature of man enhances my enjoyment of hunting.


Piggery Perspectives On Wildlife Management And Research, David Fraser Sep 1985

Piggery Perspectives On Wildlife Management And Research, David Fraser

Wildlife Population Management Collection

No abstract provided.


Estimation Of Harvest Rate Of Black Bears From Age And Sex Data, David Fraser, James F. Gardner, George B. Kolenosky, Stewart Strathearn Apr 1982

Estimation Of Harvest Rate Of Black Bears From Age And Sex Data, David Fraser, James F. Gardner, George B. Kolenosky, Stewart Strathearn

Wildlife Population Management Collection

No abstract provided.


Estimation Of Harvest Rate And Vulnerability From Age And Sex Data, J. E. Pahoheimo, David Fraser Oct 1981

Estimation Of Harvest Rate And Vulnerability From Age And Sex Data, J. E. Pahoheimo, David Fraser

Wildlife Population Management Collection

A nonlinear least-squares procedure is developed to estimate harvest rate and differential vulnerability in wildlife populations that are harvested with 1 segment of the population more able than another. The method requires age data by category from a series of harvests, plus information on accumulated harvest effort, and assumes that the nonharvest mortality rate is the same for the categories. The data need not be from consecutive harvests, as long as the effort is known for missing Monte Carlo simulations were done to verify the estimation procedure. An example shows the application of the method to moose (Alces alces) harvest …