The effect of freshwater canal discharge on the stability of two seagrass benthic communities in Biscayne National Park, Florida
1982
Brook, I M
A two-year study in western Biscayne National Park, Florida examined two benthic communities which were affected by pulse discharge of freshwater from drainage canals. One community, in a dense shoal-grass meadow (Halodule wrightii ), still had not returned to its initial structure after eighteen months following the first major freshwater inflow during the study. Invertebrate abundance never recovered its former levels, while dominance shifted from amphipods in the high abundance period to mollusks, although the same amphipod species were present. The other sampling site affected by canal discharge, heavily vegetated by turtlegrass (Thalassia testudinum ), manatee grass (Syringodium filiforme ), shoalgrass (H. wrightii ), and the red algae Laurencia poitei and Digenia simplex , maintained consistent patterns of similarity throughout the study period.
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