RECRUITMENT OF THE INTERTIDAL KELP LESSONIA-NIGRESCENS BORY IN NORTHERN CHILE - SUCCESSIONAL CONSTRAINTS AND OPPORTUNITIES

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dc.contributor.authorCAMUS, PA
dc.date.accessioned2025-01-21T01:35:07Z
dc.date.available2025-01-21T01:35:07Z
dc.date.issued1994
dc.description.abstractThe strong 1982/83 El Nino event caused local extinction in populations of the low intertidal kelp Lessonia nigrescens Bory on northern Chilean coasts. The kelp has partially recolonized, but its recovery has apparently been low. This study documents the effect of biological factors that potentially decrease the velocity of kelp recolonization in northern Chile. A removal experiment showed that encrusting coralline algae, which dominate the lower intertidal, significantly reduce the recruitment of L. nigrescens in the presence of herbivores. Epithallium shedding by encrusting corallines is the most probable cause for this inhibition process. On the other hand, grazing on encrusting corallines by the chiton Enoplochiton niger (Barnes), a large-sized herbivore (10-20 cm length), could also affect kelp recruitment. The intestinal content of E. niger, where encrusting corallines are the main item (84.2%), revealed the presence of L. nigrescens. Among the natural substrata on which kelp recruits, measured at five different localities, the coarsely-branched alga Corallina officinalis (Decaisne) Kutzing reached the highest frequency, despite its extremely low cover (< 1%) in the field. This suggests that settlement on turfs of C. officinalis allows the kelp to escape from herbivory, thus facilitating its recruitment. The roles of timing of kelp recruitment and seasonal grazing are also discussed.
dc.fuente.origenWOS
dc.identifier.eissn1879-1697
dc.identifier.issn0022-0981
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/97642
dc.identifier.wosidWOS:A1994QC32800003
dc.issue.numero2
dc.language.isoen
dc.pagina.final181
dc.pagina.inicio171
dc.revistaJournal of experimental marine biology and ecology
dc.rightsacceso restringido
dc.subjectFACILITATION
dc.subjectGRAZING
dc.subjectINHIBITION
dc.subjectKELP
dc.subjectRECRUITMENT
dc.subject.ods14 Life Below Water
dc.subject.ods15 Life on Land
dc.subject.ods13 Climate Action
dc.subject.odspa14 Vida submarina
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.subject.odspa13 Acción por el clima
dc.titleRECRUITMENT OF THE INTERTIDAL KELP LESSONIA-NIGRESCENS BORY IN NORTHERN CHILE - SUCCESSIONAL CONSTRAINTS AND OPPORTUNITIES
dc.typeartículo
dc.volumen184
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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