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Are high densities of fishes at artificial reefs the result of
habitat limitation or behavioral preference?.
Bohnsack, JA
Bulletin of Marine Science. Vol. 44, no. 2, pp. 631-645. 1989.
Rapid colonization, high fish densities, and high catch rates at
artificial reefs have been used as evidence for habitat-limitation
and increased production of reef fishes. An alternative hypothesis
is that artificial reefs attract fishes due to behavioral
preferences but do not increase reef fish production or abundance.
Reviewed literature reveals that except in one case evidence for
increased production is mostly anecdotal and inadequate.
Attraction and/or production by a particular artificial reef is
predicted to depend on the species and individual ages (size) of
reef fish, and on reef location. Factors predicted to be important
are natural reef availability, mechanisms of natural population
limitation, fishery exploitation pressure, life history dependency
on reefs, and species-specific and age-specific behavioral
characteristics. Increased production is most likely at locations
isolated from natural reefs, and for habitat-limited, demersal,
philopatric, territorial, and obligatory reef species.
 Descriptors: Article Subject Terms artificial reefs | attracting techniques | environmental factors | habitat selection | population density | Article Taxonomic Terms Pisces
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