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231223s2007 xx ||||| 00| ||eng c |
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|a (NLM)17298525
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Keller, Reuben P
|e verfasserin
|4 aut
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| 245 |
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|a Fecundity as a basis for risk assessment of nonindigenous freshwater molluscs
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|c 2007
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 26.03.2007
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|a Date Revised 14.02.2007
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|a published: Print
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|a Citation Status MEDLINE
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|a The most efficient way to reduce future damages from nonindigenous species is to prevent the introduction of harmful species. Although ecologists have long sought to predict the identity of such species, recent methodological advances promise success where previous attempts failed. We applied recently developed risk assessment approaches to nonindigenous freshwater molluscs at two geographic scales: the Laurentian Great Lakes basin and the 48 contiguous states of the United States. We used data on natural history and biogeography to discriminate between established freshwater molluscs that are benign and those that constitute nuisances (i.e., cause environmental and/or economic damage). Two statistical techniques, logistic regression and categorical tree analysis, showed that nuisance status was positively associated with fecundity. Other aspects of natural history and biogeography did not significantly affect likelihood of becoming a nuisance. We then used the derived statistical models to predict the chance that 15 mollusc species not yet in natural ecosystems would cause damage if they become established. We also tested whether time since establishment is related to the likelihood that nonindigenous mollusc species in the Great Lakes and United States would cause negative impacts. No significant relationship was evident at the U.S. scale, but recently established molluscs within the Great Lakes were more likely to cause negative impacts. This may reflect changing environmental conditions, changing patterns of trade, or may be an indication of "invasional meltdown." Our quantitative analyses could be extended to other taxa and ecosystems and offer a number of improvements over the qualitative risk assessments currently used by U.S. (and other) government agencies
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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| 650 |
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|a Research Support, U.S. Gov't, Non-P.H.S.
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| 700 |
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|a Drake, John M
|e verfasserin
|4 aut
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| 700 |
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|a Lodge, David M
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Conservation biology : the journal of the Society for Conservation Biology
|d 1999
|g 21(2007), 1 vom: 15. Feb., Seite 191-200
|w (DE-627)NLM098176803
|x 1523-1739
|7 nnns
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| 773 |
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|g volume:21
|g year:2007
|g number:1
|g day:15
|g month:02
|g pages:191-200
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|d 21
|j 2007
|e 1
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|h 191-200
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