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Evaluation of the FORAM index in a case of conservation : Benthic foraminifera as indicators of ecosystem resilience in protected and non-protected coral reefs of the Southern Caribbean

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Evaluation of the FORAM index in a case of conservation : Benthic foraminifera as indicators of ecosystem resilience in protected and non-protected coral reefs of the Southern Caribbean

Content Provider	Springer Nature Link
Author	Velásquez, Johanna López Angarita, Juliana Sánchez, Juan A.
Copyright Year	2011
Abstract	Localized and global impacts are responsible for driving the current decline in coral reef ecosystems. The worldwide debate over the efficacy of Marine Protected Areas (MPAs) as a conservation measure for coral reefs highlights the importance of acquiring accurate indicators of reef resilience and recovery under stressful conditions. Marine benthic foraminifera, considered outstanding indicators for environmental changes, are unicellular eukaryotes that inhabit sandy sediments in coral reefs. There are three kinds of benthic foraminifera: symbiotic, opportunistic, and other small heterotrophic. Symbiosis with microalgae is not favorable under high nutrient conditions. This study compared the FORAM Index (FI) in different sites inside and outside MPAs. The index was also compared with coral and algae cover. High FI values are characteristic of healthy oligotrophic reefs whereas low values represent eutrophicated ecosystems. A community structure analysis was done in order to determine the compositional change of functional groups, and thus, to test spatially the index efficiency and performance. In general, MPA sites presented lower indexes compared to Non-MPA sites, probably due to the higher impact of tourism and agriculture in these areas. On the other hand, the index was not correlated with coral nor algae cover, even though positive and negative trends were found. Assemblage analyzes corroborated that the symbiotic foraminifers’ high susceptibility is the main source for the index variation, which was independent of the substrate type from which it was sampled. Our results show both the efficiency of this index and the importance of its application for evaluating conservation strategies.
Starting Page	3591
Ending Page	3603
Page Count	13
File Format	PDF
ISSN	09603115
Journal	Biodiversity and Conservation
Volume Number	20
Issue Number	14
e-ISSN	15729710
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-09-17
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Anthropogenic impact Coral reefs Eutrophication FORAM Index Marine Protected Area MPA Phase shift Symbiont-bearing foraminifera Plant Sciences Evolutionary Biology Tree Biology
Content Type	Text
Resource Type	Article
Subject	Ecology Ecology, Evolution, Behavior and Systematics Nature and Landscape Conservation

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