English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/102707
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Long-lived groupers require structurally stable reefs in the face of repeated climate change disturbances

AutorKarkarey, Rucha; Kelkar, Nachiket; Savio Lobo, A.; Alcoverro, Teresa ; Arthur, Rohan
Palabras claveNatural refugia
Groupers
Coral reefs
Structural change
Habitat stability
Fecha de publicación2014
EditorSpringer
CitaciónCoral Reefs 33 : 289–302 (2014)
ResumenBenthic recovery from climate-related disturbances does not always warrant a commensurate functional recovery for reef-associated fish communities. Here, we examine the distribution of benthic groupers (family Serranidae) in coral reef communities from the Lakshadweep archipelago (Arabian Sea) in response to structural complexity and long-term habitat stability. These coral reefs that have been subject to two major El Nin˜o Southern Oscillation- related coral bleaching events in the last decades (1998 and 2010). First, we employ a long-term (12-yr) benthicmonitoring dataset to track habitat structural stability at twelve reef sites in the archipelago. Structural stability of reefs was strongly driven by exposure to monsoon storms and depth, which made deeper and more sheltered reefs on the eastern aspect more stable than the more exposed (western) and shallower reefs. We surveyed groupers (species richness, abundance, biomass) in 60 sites across the entire archipelago, representing both exposures and depths. Sites were selected along a gradient of structural complexity from very low to high. Grouper biomass appeared to vary with habitat stability with significant differences between depth and exposure; sheltered deep reefs had a higher grouper biomass than either sheltered shallow or exposed (deep and shallow) reefs. Species richness and abundance showed similar (though not significant) trends. More interestingly, average grouper biomass increased exponentially with structural complexity, but only at the sheltered deep (high stability) sites, despite the availability of recovered structure at exposed deep and shallow sites (lower-stability sites). This trend was especially pronounced for long-lived groupers (life span [10 yrs). These results suggest that long-lived groupers may prefer temporally stable reefs, independent of the local availability of habitat structure. In reefs subject to repeated disturbances, the presence of structurally stable reefs may be critical as refuges for functionally important, long-lived species like groupers.
Descripción14 páginas, 6 figuras, 5 tablas.
Versión del editorhttp://dx.doi.org/10.1007/s00338-013-1117-y
URIhttp://hdl.handle.net/10261/102707
DOI10.1007/s00338-013-1117-y
ISSN0722-4028
E-ISSN1432-0975
Aparece en las colecciones: (CEAB) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.