| The quagga mussel crisis at Lake Mead National Recreation Area, Nevada (U.S.A.). | |
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MedLine Citation:
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PMID: 20337691 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Parks are cornerstones of conservation; and non-native invasive species drive extensive changes to biological diversity in parks. Knowing this, national park staff at Lake Mead National Recreation Area in the southwestern United States had a program in place for early detection of the non-native, invasive quagga mussel (Dreissena rostriformis bugensis). Upon finding the mussel in January 2007, managers moved quickly to access funding and the best available science to implement a response. Managers considered four options--doing nothing, closing the park, restricting movement on the lakes, and educating and enforcing park visitors--and decided to focus on education and enforcing existing laws. Nonetheless, quagga spread throughout the park and soon began to appear throughout the western United States. I examined why efforts to control the expansion failed and determined the general lessons to be learned from this case. Concentrating human visitation on the lakes through land-use zoning opened a pathway for invasion, reduced management options, and led to the rapid spread of quagga. To reconcile competing mandates to protect nature and provide recreation, zoning in parks has become a common practice worldwide. It reduces stress on some areas of a park by restricting and thus concentrating human activity in particular areas. Concentrating the human activity in one area does three things: cements pathways that repeatedly import and export vectors of non-native invasive species; creates the disturbed area necessary to enable non-native invasive species to gain a foothold; and, establishes a source of invasions that, without appropriate controls, can quickly spread to a park's wilderness areas. |
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Authors:
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Valerie Hickey |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. Date: 2010-03-22 |
Journal Detail:
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Title: Conservation biology : the journal of the Society for Conservation Biology Volume: 24 ISSN: 1523-1739 ISO Abbreviation: Conserv. Biol. Publication Date: 2010 Aug |
Date Detail:
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Created Date: 2010-07-19 Completed Date: 2010-10-19 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9882301 Medline TA: Conserv Biol Country: United States |
Other Details:
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Languages: eng Pagination: 931-7 Citation Subset: IM |
Affiliation:
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Nicholas School of the Environment, Duke University, Durham, NC 27708, USA. valerie.hickey@duke.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Bivalvia / physiology* Conservation of Natural Resources / economics, methods* Demography* Nevada Population Dynamics Recreation* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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