Coral Reef Evaluation and Monitoring Project Dry Tortugas 2006

The purpose of the Coral Reef Evaluation and Monitoring Project (CREMP) is to monitor the status and trends of selected reefs in the Florida Keys National Marine Sanctuary(FKNMS). CREMP assessments have been conducted annually at fixed sites since 1996 and data collected provides information on the temporal changes in benthic cover and diversity of stony corals and associated marine flora and fauna. The core field methods continue to be underwater videography and timed coral species inventories. Findings presented in this report include data from 109 stations at 37 sites sampled from 1996 through 2008 in the Florida Keys and 1999 through 2008 in the Dry Tortugas. The report describes the annual differences (between 2007 and 2008) in the percent cover of major benthic taxa (stony corals, octocorals, sponges, and macroalgae), mean coral species richness and the incidence of stony coral conditions. Additionally, it examines the long-term trends of the major benthic taxa, five coral complex, Montastraea cavernosa, Colpophyllia natans, Siderastrea siderea, and Porites astreoides) and the clionaid sponge, Cliona delitrix. It is one of the longest running coral reef monitoring projects in south Florida and has been extremely important in documenting the temporal changes that have occurred in recent years.

珊瑚礁评估与监测项目（Coral Reef Evaluation and Monitoring Project，CREMP）的核心目标，是对佛罗里达礁岛群国家海洋保护区（Florida Keys National Marine Sanctuary，FKNMS）内选定珊瑚礁的现状及动态变化趋势开展监测。自1996年起，项目组每年均在固定监测点位实施CREMP评估工作，所采集的数据可反映石珊瑚及相关海洋动植物的底栖覆盖度与物种多样性随时间的变化情况。核心野外调查方法沿用水下摄像与定时珊瑚物种普查两种方式。本报告所载的调查结果，涵盖1996至2008年在佛罗里达礁岛群区域37个点位的109个监测站采集的数据，以及1999至2008年在德赖托图格斯群岛采集的数据。报告阐述了2007年与2008年间主要底栖生物分类群（包括石珊瑚、八放珊瑚、海绵及大型藻类）的覆盖占比、珊瑚物种平均丰富度，以及石珊瑚健康异常事件发生情况的年度差异。此外，报告还分析了主要底栖生物分类群、五种珊瑚类群（包括大石菊珊瑚*Montastraea cavernosa*、脑形滨珊瑚*Colpophyllia natans*、星孔珊瑚*Siderastrea siderea*以及多孔珊瑚*Porites astreoides*）以及穿孔海绵*Cliona delitrix*的长期变化趋势。本项目是南佛罗里达地区持续运行时间最长的珊瑚礁监测项目之一，在记录近年来珊瑚礁生态系统的时间序列变化方面发挥了极为重要的作用。