File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Effectiveness of a small marine reserve in southern China in protecting the harvested sea urchin Anthocidaris crassispina: A mark-and-recapture study

TitleEffectiveness of a small marine reserve in southern China in protecting the harvested sea urchin Anthocidaris crassispina: A mark-and-recapture study
Authors
KeywordsAnthocidaris crassispina
Growth model
Marine protected area
Mortality rate
Sea urchin
Southern China
Issue Date2011
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/biocon
Citation
Biological Conservation, 2011, v. 144 n. 11, p. 2674-2683 How to Cite?
AbstractAssessment of the effectiveness of protected areas requires information on population characteristics of the target species. This study used a mark-and-recapture approach to examine the population structure, individual growth, and mortality of the commercially harvested short-spined sea urchin Anthocidaris crassispina in a small (18ha) no-take marine reserve and two nearby non-protected sites. Sea urchins were tagged with fluorochrome and recaptured 1 year later. The size-at-age relationship was modelled using the Tanaka function, and mortality estimated using an exponential decay function coupled with the Tanaka growth parameters. The urchin population in the reserve consisted of a higher proportion of older individuals than populations in the two non-protected areas, however, large sea urchins (>50mm) were absent in the reserve. Sea urchins occurring at high densities (>15ind.m -2) in the reserve grew much slower than those outside the reserve, suggesting a density-dependant effect on growth. Growth ring analysis from the rotulae supported the mark-and-recapture results with the maximum number of rings being higher in the reserve than in non-protected sites. Urchins with the same number of growth rings inside the reserve were smaller than those outside the reserve. Within the reserve, urchins with the same number of growth rings were smaller at locations with higher urchin density. Annual mortality rate was lower in the reserve population than in the non-protected populations. These results illustrate the effectiveness of this small reserve in protecting A. crassispina from fishing. However, further study is required to examine whether a high density of small/old individuals is better than a medium density of large individuals in order to maximize the potential spillover of larvae by such small urchin refugia to the surrounding overfished areas. © 2011 Elsevier Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/139733
ISSN
2015 Impact Factor: 3.985
2015 SCImago Journal Rankings: 2.593
ISI Accession Number ID
Funding AgencyGrant Number
Hong Kong Baptist University
FRG/07-08/I-06
Funding Information:

We thank M. P. Russell for advice on the tagging method, S.S. Chung, H.L. Wong, C.S. Kwan and C.K. Tang for assistance in the field, G. Williams and T.C. Wai for helpful comments on the manuscript, W.X. Wang for providing access to the marine facilities at HKUST, and three anonymous reviewers for critical comments. The study at the marine reserve has been approved by the Director of the Agriculture, Fisheries and Conservation Department. This study was supported by FRG/07-08/I-06 to JWQ and a postgraduate studentship to DCCL from Hong Kong Baptist University.

References

 

DC FieldValueLanguage
dc.contributor.authorLau, DCCen_HK
dc.contributor.authorDumont, CPen_HK
dc.contributor.authorLui, GCSen_HK
dc.contributor.authorQiu, JWen_HK
dc.date.accessioned2011-09-23T05:54:50Z-
dc.date.available2011-09-23T05:54:50Z-
dc.date.issued2011en_HK
dc.identifier.citationBiological Conservation, 2011, v. 144 n. 11, p. 2674-2683en_HK
dc.identifier.issn0006-3207en_HK
dc.identifier.urihttp://hdl.handle.net/10722/139733-
dc.description.abstractAssessment of the effectiveness of protected areas requires information on population characteristics of the target species. This study used a mark-and-recapture approach to examine the population structure, individual growth, and mortality of the commercially harvested short-spined sea urchin Anthocidaris crassispina in a small (18ha) no-take marine reserve and two nearby non-protected sites. Sea urchins were tagged with fluorochrome and recaptured 1 year later. The size-at-age relationship was modelled using the Tanaka function, and mortality estimated using an exponential decay function coupled with the Tanaka growth parameters. The urchin population in the reserve consisted of a higher proportion of older individuals than populations in the two non-protected areas, however, large sea urchins (>50mm) were absent in the reserve. Sea urchins occurring at high densities (>15ind.m -2) in the reserve grew much slower than those outside the reserve, suggesting a density-dependant effect on growth. Growth ring analysis from the rotulae supported the mark-and-recapture results with the maximum number of rings being higher in the reserve than in non-protected sites. Urchins with the same number of growth rings inside the reserve were smaller than those outside the reserve. Within the reserve, urchins with the same number of growth rings were smaller at locations with higher urchin density. Annual mortality rate was lower in the reserve population than in the non-protected populations. These results illustrate the effectiveness of this small reserve in protecting A. crassispina from fishing. However, further study is required to examine whether a high density of small/old individuals is better than a medium density of large individuals in order to maximize the potential spillover of larvae by such small urchin refugia to the surrounding overfished areas. © 2011 Elsevier Ltd.en_HK
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/bioconen_HK
dc.relation.ispartofBiological Conservationen_HK
dc.subjectAnthocidaris crassispinaen_HK
dc.subjectGrowth modelen_HK
dc.subjectMarine protected areaen_HK
dc.subjectMortality rateen_HK
dc.subjectSea urchinen_HK
dc.subjectSouthern Chinaen_HK
dc.titleEffectiveness of a small marine reserve in southern China in protecting the harvested sea urchin Anthocidaris crassispina: A mark-and-recapture studyen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0006-3207&volume=144&issue=11&spage=2674&epage=2683&date=2011&atitle=Effectiveness+of+a+small+marine+reserve+in+southern+China+in+protecting+the+harvested+sea+urchin+Anthocidaris+crassispina:+a+mark-and-recapture+study-
dc.identifier.emailDumont, CP: dumont.clement@gmail.comen_HK
dc.identifier.emailLui, GCS: csglui@hku.hken_HK
dc.identifier.authorityDumont, CP=rp00692en_HK
dc.identifier.authorityLui, GCS=rp00755en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.biocon.2011.07.027en_HK
dc.identifier.scopuseid_2-s2.0-80052577416en_HK
dc.identifier.hkuros195781en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80052577416&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume144en_HK
dc.identifier.issue11en_HK
dc.identifier.spage2674en_HK
dc.identifier.epage2683en_HK
dc.identifier.isiWOS:000295442900016-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridLau, DCC=26633140600en_HK
dc.identifier.scopusauthoridDumont, CP=13407874500en_HK
dc.identifier.scopusauthoridLui, GCS=8613288600en_HK
dc.identifier.scopusauthoridQiu, JW=7403309861en_HK
dc.identifier.citeulike9715973-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats