HUMAN EXCLUSION FROM ROCKY INTERTIDAL OF LAS-CRUCES, CENTRAL CHILE - EFFECTS ON DURVILLAEA-ANTARCTICA (PHAEOPHYTA, DURVILLEALES)

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dc.contributor.authorCASTILLA, JC
dc.contributor.authorBUSTAMANTE, RH
dc.date.accessioned2025-01-23T19:24:20Z
dc.date.available2025-01-23T19:24:20Z
dc.date.issued1989
dc.description.abstractOn the exposed rocky shores of central Chile there exists a continuous small-scale harvesting of bull-kelp Durvillaea antarctica, by ''mariscadores'' (shellfish and algae gatherers). These harvest both fronds and stipes for human consumption. To assess the effects of human activity on D. antarctica populations, the density, standing crop and size structure of the kelp were compared in non-harvested (fenced) and regularly harvested (unfenced) areas. Both coastal mainland and small islands were included in the fenced and unfenced areas. Unfenced islands were expected to receive less human disturbance than unfenced mainland areas, because the islands were less accessible to harvesters. Populations of kelp underwent great fluctuations in abundance throughout the study period. Comparison between harvested and non-harvested areas revealed significant differences in density, biomass and size structure. In contrast, no significant differences were found between nearshore islands inside and outside the fenced area. Sources of variation in abundance of populations correspond to recruitment, natural mortality and harvesting, especially in harvested mainland areas. Interaction between time and extent of exploitation is significant when D. antarctica biomass is considered. The existence of protected areas (coastal preserves) and of areas of difficult access to mariscadores (refuges or ''bufferzones'') allows the preservation of populations and facilitates re-population of harvested zones.
dc.fuente.origenWOS
dc.identifier.eissn1616-1599
dc.identifier.issn0171-8630
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/99343
dc.identifier.wosidWOS:A1989R612600001
dc.issue.numero3
dc.language.isoen
dc.pagina.final214
dc.pagina.inicio203
dc.revistaMarine ecology progress series
dc.rightsacceso restringido
dc.subject.ods13 Climate Action
dc.subject.ods14 Life Below Water
dc.subject.ods15 Life on Land
dc.subject.odspa13 Acción por el clima
dc.subject.odspa14 Vida submarina
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleHUMAN EXCLUSION FROM ROCKY INTERTIDAL OF LAS-CRUCES, CENTRAL CHILE - EFFECTS ON DURVILLAEA-ANTARCTICA (PHAEOPHYTA, DURVILLEALES)
dc.typeartículo
dc.volumen50
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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