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Article: Extinction vulnerability in marine populations

TitleExtinction vulnerability in marine populations
Authors
KeywordsBiodiversity
Conservation
Detection
Fisheries
Recovery
Red List
Risk
Issue Date2003
PublisherBlackwell Publishing Ltd. The Journal's web site is located at http://www.blackwellpublishing.com/journals/FAF
Citation
Fish And Fisheries, 2003, v. 4 n. 1, p. 25-64 How to Cite?
AbstractHuman impacts on the world's oceans have been substantial, leading to concerns about the extinction of marine taxa. We have compiled 133 local, regional and global extinctions of marine populations. There is typically a 53-year lag between the last sighting of an organism and the reported date of the extinction at whatever scale this has occurred. Most disappearances (80%) were detected using indirect historical comparative methods, which suggests that marine extinctions may have been underestimated because of low-detection power. Exploitation caused most marine losses at various scales (55%), followed closely by habitat loss (37%), while the remainder were linked to invasive species, climate change, pollution and disease. Several perceptions concerning the vulnerability of marine organisms appear to be too general and insufficiently conservative. Marine species cannot be considered less vulnerable on the basis of biological attributes such as high fecundity or large-scale dispersal characteristics. For commercially exploited species, it is often argued that economic extinction of exploited populations will occur before biological extinction, but this is not the case for non-target species caught in multispecies fisheries or species with high commercial value, especially if this value increases as species become rare. The perceived high potential for recovery, high variability and low extinction vulnerability of fish populations have been invoked to avoid listing commercial species of fishes under international threat criteria. However, we need to learn more about recovery, which may be hampered by negative population growth at small population sizes (Allee effect or depensation) or ecosystem shifts, as well as about spatial dynamics and connectivity of subpopulations before we can truly understand the nature of responses to severe depletions. The evidence suggests that fish populations do not fluctuate more than those of mammals, birds and butterflies, and that fishes may exhibit vulnerability similar to mammals, birds and butterflies. There is an urgent need for improved methods of detecting marine extinctions at various spatial scales, and for predicting the vulnerability of species.
Persistent Identifierhttp://hdl.handle.net/10722/73350
ISSN
2015 Impact Factor: 8.521
2015 SCImago Journal Rankings: 3.751
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorDulvy, NKen_HK
dc.contributor.authorSadovy, Yen_HK
dc.contributor.authorReynolds, JDen_HK
dc.date.accessioned2010-09-06T06:50:27Z-
dc.date.available2010-09-06T06:50:27Z-
dc.date.issued2003en_HK
dc.identifier.citationFish And Fisheries, 2003, v. 4 n. 1, p. 25-64en_HK
dc.identifier.issn1467-2960en_HK
dc.identifier.urihttp://hdl.handle.net/10722/73350-
dc.description.abstractHuman impacts on the world's oceans have been substantial, leading to concerns about the extinction of marine taxa. We have compiled 133 local, regional and global extinctions of marine populations. There is typically a 53-year lag between the last sighting of an organism and the reported date of the extinction at whatever scale this has occurred. Most disappearances (80%) were detected using indirect historical comparative methods, which suggests that marine extinctions may have been underestimated because of low-detection power. Exploitation caused most marine losses at various scales (55%), followed closely by habitat loss (37%), while the remainder were linked to invasive species, climate change, pollution and disease. Several perceptions concerning the vulnerability of marine organisms appear to be too general and insufficiently conservative. Marine species cannot be considered less vulnerable on the basis of biological attributes such as high fecundity or large-scale dispersal characteristics. For commercially exploited species, it is often argued that economic extinction of exploited populations will occur before biological extinction, but this is not the case for non-target species caught in multispecies fisheries or species with high commercial value, especially if this value increases as species become rare. The perceived high potential for recovery, high variability and low extinction vulnerability of fish populations have been invoked to avoid listing commercial species of fishes under international threat criteria. However, we need to learn more about recovery, which may be hampered by negative population growth at small population sizes (Allee effect or depensation) or ecosystem shifts, as well as about spatial dynamics and connectivity of subpopulations before we can truly understand the nature of responses to severe depletions. The evidence suggests that fish populations do not fluctuate more than those of mammals, birds and butterflies, and that fishes may exhibit vulnerability similar to mammals, birds and butterflies. There is an urgent need for improved methods of detecting marine extinctions at various spatial scales, and for predicting the vulnerability of species.en_HK
dc.languageengen_HK
dc.publisherBlackwell Publishing Ltd. The Journal's web site is located at http://www.blackwellpublishing.com/journals/FAFen_HK
dc.relation.ispartofFish and Fisheriesen_HK
dc.subjectBiodiversityen_HK
dc.subjectConservationen_HK
dc.subjectDetectionen_HK
dc.subjectFisheriesen_HK
dc.subjectRecoveryen_HK
dc.subjectRed Listen_HK
dc.subjectRisken_HK
dc.titleExtinction vulnerability in marine populationsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1367-8396&volume=4&spage=25&epage=64&date=2003&atitle=Extinction+vulnerability+in+marine+populationsen_HK
dc.identifier.emailSadovy, Y: yjsadovy@hkucc.hku.hken_HK
dc.identifier.authoritySadovy, Y=rp00773en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1046/j.1467-2979.2003.00105.xen_HK
dc.identifier.scopuseid_2-s2.0-0037482852en_HK
dc.identifier.hkuros82530en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037482852&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume4en_HK
dc.identifier.issue1en_HK
dc.identifier.spage25en_HK
dc.identifier.epage64en_HK
dc.identifier.isiWOS:000187385800002-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridDulvy, NK=6701844802en_HK
dc.identifier.scopusauthoridSadovy, Y=6603830002en_HK
dc.identifier.scopusauthoridReynolds, JD=7403603566en_HK
dc.identifier.citeulike1305115-

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