Current Search: Marine animals--Collection and preservation--Florida (x)
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Title
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BENTHIC FAUNAL RECOLONIZATION OF AN OFFSHORE BORROW PIT IN SOUTHEASTERN FLORIDA.
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Creator
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BOWEN, PHILIP RANDOLPH., Florida Atlantic University, Marsh, G. Alex
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Abstract/Description
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Benthic faunal repopulation of a newly created borrow pit off Delray Beach, Florida was monitored from 15 June 1978 to 23 June 1979. For comparative purposes, a single sampling of an adjacent five year old borrow pit was conducted concurrently with the final sampling of the new pit. Repopulation of the new pit was rapid, with 35 species and 1081 inds./m^2 collected at the initial sampling, 21 days postdredging. Abundance peaked at 1761 inds./m^2 in the third sampling period (169 days...
Show moreBenthic faunal repopulation of a newly created borrow pit off Delray Beach, Florida was monitored from 15 June 1978 to 23 June 1979. For comparative purposes, a single sampling of an adjacent five year old borrow pit was conducted concurrently with the final sampling of the new pit. Repopulation of the new pit was rapid, with 35 species and 1081 inds./m^2 collected at the initial sampling, 21 days postdredging. Abundance peaked at 1761 inds./m^2 in the third sampling period (169 days postdredging) and species richness peaked at the fifth sampling period (325 days post dredging) with 57 species. Polychaete annelids and peracarid crustaceans were the numerically most important initial colonizers of the new pit, together comprising 91.8% of the fauna. Species diversity (H') and equitability were lowest during the first sampling period (4.21 and 0.82, respectively) and, although variable, increased toward the end of the study (5.10 and 0.92, respectively). The disturbed area showed complete recovery based on several aspects of community structure, although differences in species composition were still evident between the new and old pits.
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Date Issued
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1985
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PURL
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http://purl.flvc.org/fcla/dt/14252
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Subject Headings
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Florida--Environmental aspects, Marine animals--Collection and preservation--Florida
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Format
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Document (PDF)
