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首页> 外文期刊>Ocean & coastal management >Spatial analysis of geophysical and environmental factors characterize distinct coral reef habitats around Sri Lanka; implications for management
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Spatial analysis of geophysical and environmental factors characterize distinct coral reef habitats around Sri Lanka; implications for management

机译：地球物理和环境因素的空间分析表征斯里兰卡周围不同的珊瑚礁栖息地; 对管理层的影响

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Spatial distribution patterns of coral reefs are maintained by a magnitude of chemical, physical and biological factors. Being a small continental island in the Indian Ocean, the extent of coral reef habitats around Sri Lanka has been limited and patchy showing unique, regional distribution patterns owing to these factors. However, the available data on these factors are sparse and outdated hindering proper management implications of these coral reefs. Here, we use remote sensing data on coral reefs in providing a framework to formulate hypotheses about the ecological processes governing these spatial and temporal patterns of coral reef distribution around the country. The results explained that the coral reef habitats around Sri Lanka are mostly shaped by the variation in nutrient levels (phosphate, nitrate and silicate), annual variance in sea surface salinity, mean current velocity and bathymetric shape. The study identified four unique coral reef areas around the island owing to variations of these factors; east coast reefs, south coast reefs, west coast reefs and north/northwestern reefs around Jaffna peninsula and Gulf of Mannar. The predicted Maximum entropy distribution models for the coral reef habitats of Sri Lanka revealed a significant amount of coral reef cover around the island (~2739 km2) which might deplete by ~4% in another 30 years due to changes in these factors. The highest amount of loss will be in the west coast (~17.76%) and least amount of loss will be in the east coast (~5.54%). The current research aids in understanding the reef ecology around Sri Lanka and provides implications for marine ecosystem management and conservation planning.
机译：珊瑚礁的空间分布模式由化学，物理和生物因素的大小保持。作为印度洋的一个小型大陆岛屿，斯里兰卡周围的珊瑚礁栖息地的程度有限，斑驳的是由于这些因素而言的独特区域分布模式。但是，这些因素的可用数据是稀疏，过时的这些珊瑚礁的妨碍了适当的管理含义。在这里，我们在珊瑚礁上使用遥感数据提供一个框架，以制定关于在该国周围的珊瑚礁分布的这些空间和时间模式的生态过程的假设。结果解释说，斯里兰卡周围的珊瑚礁栖息地主要由营养水平的变化（磷酸盐，硝酸盐和硅酸盐），海表面盐度的年差，平均电流和碱度形状。该研究由于这些因素的变化，确定了岛上的四个独特的珊瑚礁区域;东海岸礁石，南海岸礁石，西海岸礁石和北/西北部礁石周围的Jaffna半岛和曼内湾。斯里兰卡珊瑚礁栖息地的预测最大熵分布模型揭示了大量的岛屿（〜2739 km2）周围的珊瑚礁盖，这可能由于这些因素的变化而在另外30年内耗尽〜4％。最高损失将在西海岸（〜17.76％），最少量的损失将在东海岸（〜5.54％）。目前的研究辅助了解斯里兰卡周围的珊瑚礁生态，为海洋生态系统管理和保护计划提供了影响。

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