Cascading effects of fishing on Galapagos rocky reef communities: reanalysis using corrected data

Marine Ecology Progress Series
By: , and 

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Abstract

This article replaces Sonnenholzner et al. (2007; Mar Ecol Prog Ser 343:77–85), which was retracted on September 19, 2007, due to errors in entry of data on sea urchins. We sampled 10 highly fished and 10 (putatively) lightly fished shallow rocky reefs in the southeastern area of the Galapagos Marine Reserve, Ecuador. After the correction, these are the new results: there was a negative association between slate-pencil urchins Eucidaris galapagensis and non-coralline algae. In addition, pencil urchins were less abundant where there were many predators. An indirect positive association between predators and non-coralline algae occurred. Fishing appeared to affect this trophic cascade. The spiny lobster Panulirus penicillatus, the slipper lobster Scyllarides astori, and the Mexican hogfish Bodianus diplotaenia were significantly less abundant at highly fished sites. Urchin density was higher at highly fished sites. Non-coralline algae were nearly absent from highly fished sites, where a continuous carpet of the anemone Aiptasia sp. was recorded, and the algal assemblage was mainly structured by encrusting coralline and articulated calcareous algae.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Cascading effects of fishing on Galapagos rocky reef communities: reanalysis using corrected data
Series title Marine Ecology Progress Series
DOI 10.3354/meps07890
Volume 375
Year Published 2009
Language English
Publisher Inter-Research
Contributing office(s) Western Ecological Research Center
Description 10 p.
First page 209
Last page 218