Arnold Cooke - Böcker
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2 produkter
2 produkter
704 kr
Skickas inom 5-8 vardagar
Muntjac and water deer were introduced to Britain from East Asia. This book provides a comprehensive overview of their natural history and the management of their environmental impacts.In lowland England, muntjac deer are one of the drivers of changes in woodland structure and species composition, and many of the principles relating to such woodland impact are also applicable to the activities of other species of deer. Interest in environmental impacts of deer is not solely restricted to woodlands. The highest densities of water deer occur in wetlands, where there is potential for conflict, and considerable numbers are also found on agricultural land. Muntjac have also settled in suburbia and frequently cause impacts there. Conservationists and national decision makers are concerned both about invasive alien species and about increasing deer populations.The first section covers the natural history of both species including: breeding biology, deer in the field, colonisation of Britain, a detailed look at colonisation in a single county, methods for studying deer populations and a review of deer population numbers. The second section covers environmental impact: risk assessment, impact management, control of muntjac, effect of muntjac browsing and grazing, habitat recovery from muntjac impacts and a study on the impacts of water deer. The section concludes with an overview of management and monitoring.The costs and benefits of both species are discussed, and questions asked about whether we are getting on top of problems caused by muntjac (locally and nationally) and will water deer turn out to be similar to muntjac? Attitudes and approaches to these species are changing: with water deer we are actively studying whether it might be an environmental problem, not waiting until after it has obviously become one. What will happen to distribution, numbers, impacts and attitudes in the future? Will water deer ever become a suburban animal? What does the future hold for water deer in China and Korea - and how important is the English population as a global conservation resource?
532 kr
Skickas inom 5-8 vardagar
This book describes the history of amphibian conservation and research in Britain. It is packed with unique insights from the author who, in the late 1960s, was probably Britain’s first professional amphibian conservationist. At that time, the situation for amphibians was extremely serious after three decades of population decline. Up to the 1990s, Arnold Cooke was directly involved in understanding and trying to remedy the situation via research, legislation and active conservation. He initiated long-term monitoring, surveillance and studies that continued well into this century. This research developed and utilised simple monitoring techniques, such as counting breeding newts at night or toads dead on roads. The resulting datasets also proved of value in determining whether breeding behaviour was affected by climate change.This personal overview charts in detail how amphibian conservation developed from a relatively low knowledge base with few individuals involved to an abundance of information available for the many groups of people now active in the field. It includes published, unpublished and no longer readily accessible material, to emphasise how contemporary knowledge, attitudes and resources affected what was done and what happened as a result. Various policies, strategies, laws and other initiatives have helped stop or slow declines, but the future is still uncertain.The book will appeal to a broad readership, from naturalists to professional herpetologists. Furthermore, this story will have relevance for amphibian conservation in other countries in light of their more recent widespread declines. It is also of interest to those wanting to know more about the development of wildlife conservation in Britain.