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Macroalgal communities on multi-stressed coral reefs in the Caribbean: long-term changes, spatial variations, and relationships with environmental variables
Sangil, C.; Guzmán, H.M. (2016). Macroalgal communities on multi-stressed coral reefs in the Caribbean: long-term changes, spatial variations, and relationships with environmental variables. J. Sea Res. 117: 7-19. https://dx.doi.org/10.1016/j.seares.2016.09.001
In: Journal of Sea Research. Elsevier/Netherlands Institute for Sea Research: Amsterdam; Den Burg. ISSN 1385-1101; e-ISSN 1873-1414, meer
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| Trefwoorden |
Echinometra viridis A. Agassiz, 1863 [WoRMS]; Halimeda opuntia (Linnaeus) J.V.Lamouroux, 1816 [WoRMS]; Lobophora variegata (J.V.Lamouroux) Womersley ex E.C.Oliveira, 1977 [WoRMS]
Marien/Kust |
| Author keywords |
Coral reef macroalgae; Community structure; Time series; Lobophora variegata; Halimeda opuntia; Echinometra viridis |
| Abstract |
Long-term changes in macroalgal cover, spatial variation between macroalgal communities, and relationships with environmental variables and benthic groups were assessed in coral reefs along the Caribbean coast of Panama. Sampling was conducted in two regions: Western and Central. Data collected between 2000 and 2012 showed a continuous increase in macroalgal abundance, although patterns differed according to region and site. There were differences in macroalgal communities between regions, as well as within regions between different wave-exposure levels. There were also differences between sites within regions exposed to the same level of wave action. Multivariate analysis found that wave exposure along with herbivore density (Echinometra viridis) and sedimentation were the variables that explained most of the variability between communities. Other variables such as Echinometra lucunter and Diadema antillarum densities, fish density, productivity, and live coral cover had significant relationships with community structure, but explained less of the variability. |
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