Testing the Weed Risk Assessment System for New Conservation Weeds in New Zealand PDF Download
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Author: P. A. Williams
Publisher:
ISBN: 9780478140415
Category : Environmental risk assessment
Languages : en
Pages : 19
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Book Description
Author: P. A. Williams
Publisher:
ISBN: 9780478140415
Category : Environmental risk assessment
Languages : en
Pages : 19
Get Book Here
Book Description
Author: P. A. Williams
Publisher:
ISBN:
Category : Electronic government information
Languages : en
Pages : 0
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Book Description
Author: P. A. Williams
Publisher:
ISBN: 9780478223323
Category : Environmental risk assessment
Languages : en
Pages : 23
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Book Description
Author: R. H. Groves
Publisher: CSIRO PUBLISHING
ISBN: 9780643065611
Category : Gardening
Languages : en
Pages : 272
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Book Description
The impact of invasive species on native vegetation is a major threat to biodiversity all over the world - a threat ranked second only to habitat destruction. Other negative effects of weed invasions include reduced ecosystem services, loss to agricultural production and impacts on human health. This work covers the discipline of risk assessment as applied to the invasion ecology of plants. Taking a global context, it synthesizes theories on plant invasions, introduces a variety of models for weed risk assessment, and addresses procedures for ranking invasive species on a range of scales to determine weeds of national significance. It shows how the application of risk assessment to weed invasion may help reduce weed impact and thereby improve living conditions for people throughout the world. This text is aimed at invasions ecologists, botanists, quarantine officers, policy-makers and community groups wanting to know more about this developing discipline.
Author: P. A. Williams
Publisher:
ISBN: 9780478223316
Category : Environmental risk assessment
Languages : en
Pages : 47
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Book Description
Author: Craig Walton
Publisher:
ISBN:
Category : Plant introduction
Languages : en
Pages : 16
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Book Description
Author: David Hemming
Publisher: CABI
ISBN: 9781845938796
Category : Gardening
Languages : en
Pages : 296
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Book Description
& Quot;Plant Sciences Reviews 2010" provides scientists and students in the field with timely analysis on key topics in current research. Originally published online in "CAB Reviews," this volume makes available in printed form the reviews in plant sciences published during 2010.
Author: Paul D. Champion
Publisher:
ISBN: 9780478221688
Category : Aquatic weeds
Languages : en
Pages : 30
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Book Description
Author: J. R. Bhatt
Publisher: CABI
ISBN: 1845939077
Category : Science
Languages : en
Pages : 324
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Book Description
Invasive alien species are a major threat to biodiversity and ecosystems throughout the world. In India, a country with four of the world's most important 'biodiversity hotspots', the invasion of alien plants means risking a national ecological disaster with major social and economic consequences. Currently, there is insufficient information about invasive alien plants; their distribution, rate of spread and adaptability to new environments. This book reveals existing and potential invaders, evaluates the level of risk they pose to native species and suggests steps to manage spread and limit damage. Invaluable to policy-makers, this book is also required reading for researchers of invasive plants worldwide.
Author: Carey Smith
Publisher:
ISBN:
Category : Questionnaires
Languages : en
Pages : 276
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Book Description
This thesis gives an overview of factors used in weed risk assessments and explores the disparity between the measured high accuracy rate of the weed risk assessment system (WRA) as implemented in Australia and the pessimistic assessments of some workers about the possibility of predicting the weed potential of plant species imported in the future. The accuracy of the WRA may not be as high as previously thought, and it varies with weed definition and taxonomic groups. Cluster analysis and comparative analysis by independent contrasts were employed to determine the value of individual biological and ecological questions on the WRA questionnaire. Results showed that some WRA questions could be deleted from the questionnaire and the scores for others weighted differently. The WRA is not a reliable predictor of weeds when it is considered in the context of the base-rate probability of an introduced plant becoming weedy in Australia. As a result a far greater number on non-weeds will be placed on the prohibited imported list than was initially expected.
