Anthropogenic mortality on coral reefs in Caribbean Panama predates coral disease and bleaching.
Ecol Lett
; 15(6): 561-7, 2012 Jun.
Article
en En
| MEDLINE
| ID: mdl-22462739
ABSTRACT
Caribbean reef corals have declined precipitously since the 1980s due to regional episodes of bleaching, disease and algal overgrowth, but the extent of earlier degradation due to localised historical disturbances such as land clearing and overfishing remains unresolved. We analysed coral and molluscan fossil assemblages from reefs near Bocas del Toro, Panama to construct a timeline of ecological change from the 19th century-present. We report large changes before 1960 in coastal lagoons coincident with extensive deforestation, and after 1960 on offshore reefs. Striking changes include the demise of previously dominant staghorn coral Acropora cervicornis and oyster Dendrostrea frons that lives attached to gorgonians and staghorn corals. Reductions in bivalve size and simplification of gastropod trophic structure further implicate increasing environmental stress on reefs. Our paleoecological data strongly support the hypothesis, from extensive qualitative data, that Caribbean reef degradation predates coral bleaching and disease outbreaks linked to anthropogenic climate change.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Mortalidad
/
Antozoos
/
Arrecifes de Coral
/
Fósiles
/
Moluscos
Tipo de estudio:
Prognostic_studies
/
Qualitative_research
Límite:
Animals
País como asunto:
America central
/
Panama
Idioma:
En
Año:
2012
Tipo del documento:
Article