High percent coral cover and species diversity; that is what we encountered while working site TUT-09, located on the south-facing shores of Tutuila Island. It was a vibrant tapestry of texture and color; Montipora, Acropora, Pocillopora, Hydnophora, Coscinaraea, Leptastrea, Leptoria, etc; the list of coral genera was endless, and so was the number of individual colonies encrusting on the flat bottom.
The coral working-group of the Benthic Rapid Ecological Assessment (REA) team specializes in gathering data that pertains to the structural demographics of the coral populations. In other words we are interested in acquiring information about the different types of corals present on the reef, their relative abundance, as well as the sizes of the different colonies. Once collected, this information is later summarized and analyzed, and is made available to local, regional, and state resource managers. Armed with this information, these managers can make informed decisions pertaining to the administration and use of natural resources around the island.
The coral working-group collects the coral demographic data along two belt-transects, 25m in length by 1m width. Today, my dive buddy Erin and I were particularly challenged in getting our work accomplished at survey site TUT-09, not only due to the high numbers of coral colonies growing on the bottom, but also because we had wave and surge action which made it difficult stay focused on one portion of the bottom at a time. Nonetheless, after a long 85 minute dive, Erin and I emerged satisfied with the work we accomplished, and were pleased to have had the opportunity to investigate such a site.
No comments:
Post a Comment