Juman Rahanna A
Institute of Marine Affairs, Hilltop Lane, Chaguaramas, Trinidad and Tobago.
Rev Biol Trop. 2005 May;53 Suppl 1:219-27.
The Thalassia testudinum dominated seagrass community in the Buccoo Reef/ Bon Accord Lagoon Marine Park, measures 0.5 km(2) and is part of a contiguous coral reef, seagrass bed and mangrove swamp system in southwest Tobago. 7 testudinum coverage, productivity and percent turnover rates were measured from February 1998 to February 1999 at four sample locations, while total T. testudinum biomass was measured at two locations in the lagoon from 1992-2002. Productivity and turnover rates varied spatially and seasonally. They were higher in the back-reef area than in the mangrove-fringed lagoon, and were lowest at locations near to a sewage outfall. 7 testudinum coverage ranged from 6.6% in the lagoon to 68.5% in the back-reef area while productivity ranged from 3.9 to 4.9 g dry wt m(-2) d(-1) . Productivity and percentage turnover rates were higher in the dry season (January-June) than in the wet season (July-December). Productivity ranged from 3.0 in the wet season to 5.0 g dry wt m2 d-' in the dry season while percentage turnover rates ranged from 4.2% to 5.6%. Total Thalassia biomass and productivity in Bon Accord Lagoon were compared to six similar sites in the Caribbean that also participate in the Caribbean Coastal Marine Productivity Program (CARICOMP). This seagrass community is being negatively impacted by nutrient-enriched conditions.
在布库礁/邦阿科德泻湖海洋公园中，以泰来草为主导的海草群落面积为0.5平方千米，是多巴哥西南部相连的珊瑚礁、海草床和红树林沼泽系统的一部分。1998年2月至1999年2月期间，在四个采样地点测量了泰来草的覆盖率、生产力和周转率百分比，而1992 - 2002年期间在泻湖的两个地点测量了泰来草的总生物量。生产力和周转率在空间和季节上有所变化。它们在礁后区域比在红树林环绕的泻湖中更高，而在靠近污水排放口的地点最低。泰来草覆盖率在泻湖中为6.6%，在礁后区域为68.5%，而生产力范围为3.9至4.9克干重/平方米·天。生产力和周转率百分比在旱季（1月至6月）高于雨季（7月至12月）。生产力在雨季为3.0，在旱季为5.0克干重/平方米·天，而周转率百分比范围为4.2%至- 5.6%。将邦阿科德泻湖的泰来草总生物量和生产力与加勒比地区也参与加勒比沿海海洋生产力计划（CARICOMP）的六个类似地点进行了比较。这个海草群落正受到富营养化条件的负面影响。 （注：原文中“7 testudinum”表述有误，推测应为“T. testudinum”，译文已按此修正）
