Meta-Analysis Indicates Habitat-Specific Alterations to Primary Producer and Herbivore Communities in Marine Protected Areas

A recent global quantitative review and meta-analysis was conducted on the effects of MPAs on coral reef herbivores and primary producers to support management decisions. Based on criteria for the meta-analysis, which included only well-enforced no-take MPAs, 41 individual publications representing 57 MPAs worldwide were included in the study. The authors found that within MPAs, macroalgal cover and sea urchin density were significantly lower as compared to fished areas. The relationship between macroalgae cover and herbivores was also explored. MPAs with higher populations of herbivorous fishes had significantly lower macroalgal cover. The authors conclude that the community response to MPAs is highly variable. Management implications include protecting key echinoid predators which appear crucial to the recovery of reefs. Also, actively managing grazers and predators should be an integral component of MPA design.

Author: Gilby, B.L. and T. Stevens
Year: 2014
View Full Article

Global Ecology and Conservation 2: 289-299. doi: 0.1016/j.gecco.2014.10.005

Share on FacebookTweet about this on TwitterEmail this to someone