Synthesis of coral reef health indicators for the Western Atlantic: Results of the AGRRA program (1997-2000)
Synthesis of coral reef health indicators for the Western Atlantic: Results of the AGRRA program (1997-2000)
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西大西洋珊瑚礁健康指标综合：AGRRA 计划的结果（1997-2000 年）
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发表时间：
2003
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影响因子：
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通讯作者：
P. Kramer
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文献类型：
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作者：
P. Kramer
大西洋和海湾快速珊瑚礁评估（agra）采样策略旨在收集大空间尺度上大量珊瑚礁活力指标的描述性和定量信息。在1998年至2000年期间，对具有不同干扰历史、环境条件和捕捞压力的西大西洋珊瑚礁进行了grra评估，以揭示15项指标的均值和方差。20项调查汇编成一个数据库，其中包括302个底栖生物地点（249个深底，53个浅底），2,337个底栖生物样带，14,000个样方，22,553个石珊瑚。17项调查包含247个鱼类点（206个深水点，41个浅水点）、2488个鱼类样带和71102种鱼类的可比鱼类数据。浅层（≤5m）礁体以a . palmata为主，且有相当比例为死物，而深层（>5m）礁体几乎总是以Montastraea annularis物种复群为主。鱼类群落以棘目和鳞目鱼类为主，而在浅礁和深礁中，棘目鱼类所占比例分别不到1%和4%。深礁的agra底栖生物和鱼类指标在最小空间尺度（~<0.1 km）上变化最大，近期死亡率和大藻冠层高度在区域和分区域尺度（~1 ~ 100 km）上变化最大。在20个调查范围内，深海地点的平均活珊瑚覆盖率为26%。与1998年（El Niño-Southern涛动）ENSO事件有关的石珊瑚严重白化和疾病引起的死亡在西加勒比和巴哈马分区域最为明显，蒙塔斯特拉环状珊瑚复群受到的影响最为严重。体型较大的石斑鱼和鲷鱼（~< 1/100米）的总体数量较低，这表明整个地区对许多这些更重要的目标物种过度捕捞。更偏远的珊瑚礁显示出的珊瑚礁退化的证据与更接近人类沿海开发的珊瑚礁一样多。表征整个地区当今的珊瑚礁状况是一个复杂的问题，因为在几个空间和时间尺度上可能存在多种压力来源。1 .海洋地质与地球物理，迈阿密大学罗森斯蒂尔海洋与大气科学学院，佛罗里达州迈阿密市瑞肯贝克大道4600号，33149。电子邮件:pkramer@rsmas.miami.edu
The Atlantic and Gulf Rapid Reef Assessment (AGRRA) sampling strategy is designed to collect both descriptive and quantitative information for a large number of reef vitality indicators over large spatial scales. AGRRA assessments conducted between 1998 and 2000 across a spectrum of western Atlantic reefs with different histories of disturbance, environmental conditions, and fishing pressure were examined to reveal means and variances for 15 indicators. Twenty surveys were compiled into a database containing a total of 302 benthic sites (249 deep, 53 shallow), 2,337 benthic transects, 14,000 quadrats, 22,553 stony corals. Seventeen surveys contained comparable fish data for a total of 247 fish sites (206 deep, 41 shallow), 2,488 fish transects, and 71,102 fishes. Shallow (≤ 5 m) reefs were dominated by A. palmata, a good proportion of which was standing dead, while deep (>5m) reefs were nearly always dominated by the Montastraea annularis species complex. Fish communities were dominated by acanthurids and scarids with seranids making up less than 1% of the fish seen on shallow reefs and 4% on deep reefs. AGRRA benthic and fish indicators on deep reefs showed the highest variation at the smallest spatial scale (~<0.1 km), with recent mortality and macroalgal canopy height displaying the largest area and subregional scale (~1-100 km) variation. A mean live coral cover of 26% for the 20 survey areas was determined for the deep sites. Significant bleaching and disease-induced mortality of stony corals associated with the 1998 (El Niño-Southern Oscillation) ENSO event were most apparent in the western Caribbean and Bahamas subregions and the Montastraea annularis complex was the most heavily impacted. The overall low number of sightings for larger-bodied groupers and snappers (~< 1/100 m) as a whole suggest that the entire region is overfished for many of these more heavily targeted species. More remote reefs showed as much evidence of reef degradation as reefs more proximal to human coastal development. Characterizing present-day reef condition across the region is a complex problem since there are likely multiple sources of stress operating over several spatial and temporal scales. Not withstanding the many 1 Marine Geology and Geophysics, Rosenstiel School of Marine and Atmospheric Science, University of Miami, 4600 Rickenbacker Causeway, Miami, FL, 33149. Email: pkramer@rsmas.miami.edu
影响因子：
56.9
作者：
Harvell, CD;Kim, K;Vasta, GR
通讯作者：
Vasta, GR