Twenty-five years of change in scleractinian coral communities of Daya Bay (northern South China Sea) and its response to the 2008 AD extreme cold climate event  

作　　者：CHEN TianRan YU KeFu SHI Qi LI Shu Gilbert J. Price WANG Rong ZHAO MeiXia CHEN TeGu ZHAO JianXin 

机构地区：[1]CAS Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China [2]Radiogenic Isotope Laboratory, Centre for Microscopy & Microanaiysis, The University of Queensland, Brisbane, QLD 4072, Australia

出　　处：《Chinese Science Bulletin》2009年第12期2107-2117,共11页

基　　金：Supported by Knowledge Innovation Project of the Chinese Academy of Sciences(Grant No.KZCX2-YW-318);National Basic Research Program of China(Grant No.2007CB815905);National Natural Science Foundation of China(Grant No.40830852);the Australian Research Council(Grant No.DP0773081)

摘　　要：世界范围的珊瑚礁石逐渐地正在变得并且有害地影响在之上由包括的许多因素，重要气候变化，例如全球温暖和增加的 El Nino 南部的摆动活动。通常，珊瑚礁石的坚持，在特别低纬度，部分地，海运被管理不超过集体死亡能在发生的批评限制(∼30 ° C ) 的表面温度。因此，它被想珊瑚那生活在高纬度(即，当前更凉爽的海表面温度) 将多半比珊瑚生活在对假设未来温度增加更有利作出回应低纬度(即，当前更温暖的海表面温度) 。因而，高纬度的珊瑚社区可以有潜力在面临潜在的未来时为许多珊瑚种类充当 refugia 的区域全球温暖。Daya 海湾(22 ° 3 1 ′22 ° 5 0 ′N ) ，北华南海，包含几个高纬度的 non-reefal 珊瑚社区并且在这个区域以内代表 scleractinian 珊瑚的最在北方的分布之一。显著地， Daya 海湾经历了在整个过去的 50 年的在空和海表面温度中的戏剧的温暖。在这篇论文，我们在 Daya 海湾珊瑚社区分析 25 年变化，把两个基于历史性的调查并且我们的最近 2006 2008 地区性的生态的调查。我们的结果建议与预言相反，在过去的 25 年期间在在 Daya 海湾以内的珊瑚盖子有重要衰落(即，在到在 2008 的 15.3% 仅仅珊瑚盖子的 1983/1984 的 76.6% 珊瑚盖子) 。如此的变化也在最丰富的珊瑚种类反映重要移动，从 Acropora pruinosa 到 Favites abdita。大多数现代珊瑚社区变得以前在 15 和 30 年之间建立了，相应于增加的冬季海表面温度的一个时期。然而，很少的殖民地变得在最后 15 年以内建立了，尽管有温暖的一个更强烈的时期。由考虑另外的因素，我们假设那直接人为的影响，而非气候的事件，限制了发展，并且驾驶了衰落，最后 15 年里的 Daya 海湾珊瑚社区。Daya 海湾也在过去的 50 年期间受到了偶尔的极端冷事件，与最近的发生在 2008 年初(13 年 1 月 13Coral reefs worldwide are becoming increasingly and detrimentally impacted upon by a variety of factors including significant climate changes, such as global warming and increased El Nino-Southern Oscillation activity. Generally, the persistence of coral reefs, especially at low-latitudes, is governed, in part, by sea surface temperatures not exceeding the critical limit （-30℃） at which mass mortality can occur. Thus, it is thought that corals living at high-latitudes （i.e., currently cooler sea surface temperatures） will likely respond more favourably to hypothesized future temperature increases than corals living at low-latitudes （i.e., currently warmer sea surface temperatures）. Consequently, high-latitude coral communities may have the potential to act as regions of refugia for many coral species in the face of potential future global warming. The Daya Bay （22°31′--22°50′N）, northern South China Sea, contains several high-latitude non-reefal coral communities and represents one of the most northerly distributions of scleractinian corals within the region. Significantly, Daya Bay has experienced dramatic warming in both air and sea surface temperatures throughout the past 50 years. In this paper, we analyze 25 years of change in the Daya Bay coral communities, based both on historic surveys and our latest 2006--2008 regional ecological surveys. Our results suggest that, contrary to predictions, there have been significant declines in coral cover within the Daya Bay during the past 25 years （i.e., 76.6% coral cover in 1983/1984 to only 15.3% coral cover by 2008）. Such changes also reflect a significant shift in the most abundant coral species, from Acropora pruinosa to Favites abdita. Most of the modern coral communities became established between 15 and 30 years ago, corresponding to a period of increased winter sea surface temperature. However, very few colonies have become established within the last 15 years, despite a more intense period of warming. By taking into account additi

关 键 词：极端气候事件 珊瑚群落 大亚湾 中国海 海洋表面温度 SEA 高纬度地区 低纬度地区 

分 类 号：P461[天文地球—大气科学及气象学] P588.248