Coral recruitment: a spatio-temporal analysis along the coastline of Eilat, northern Red Sea
Coral recruitment: a spatio-temporal analysis along the coastline of Eilat, northern Red Sea
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DOI：
10.1007/s00227-003-1243-0
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发表时间：
2004-04-01
期刊：
影响因子：
2.4
通讯作者：
Chadwick-Furman, NE
中科院分区：
文献类型：
--
作者：
Glassom, D;Zakai, D;Chadwick-Furman, NE
招聘率的石珊瑚人工基质进行了监测2年，在沿着埃拉特，北方红海海岸的20个站点，与其他珊瑚礁的位置记录，并评估招聘在几个空间尺度的变化。与澳大利亚大堡礁观察到的情况相比，珊瑚补充量较低，但与其他高纬度珊瑚礁地点报告的水平相似。Pocilloporids是所有季节中最丰富的珊瑚新兵。第一年的招聘人数是第二年的两倍。有相当大的空间变异性，最大比例的方差，除了误差项，可归因于网站之间的差异，在10（2）米的规模。斯皮尔曼的排名相关性表现出一致性的pociloporid珊瑚的招聘空间格局之间的年，但不是acroporid珊瑚。在春季，当只有育雏pocilloporid珊瑚Stylophora pistillata繁殖在这个地方，大多数珊瑚招聘发生在中部和南部的网站毗邻发达的珊瑚礁。在夏季，招聘模式不同年份之间显着变化，在招聘广播acroporid珊瑚在北方网站位于远离珊瑚礁的变化很大。在秋季和冬季，所有地点的定居点都很低。这项工作是第一次在红海珊瑚招聘模式的详细分析，并有助于了解在这一重要的珊瑚礁过程的空间和时间尺度的变化。
Recruitment rates of stony corals to artificial substrates were monitored for 2 years at 20 sites along the coast of Eilat, northern Red Sea, to compare with those recorded at other coral reef locations and to assess variation in recruitment at several spatial scales. Coral recruitment was low compared to that observed on the Great Barrier Reef in Australia, but was similar to levels reported from other high-latitude reef locations. Pocilloporids were the most abundant coral recruits in all seasons. Recruitment was twofold higher during the first year than during the second year of study. There was considerable spatial variability, with the largest proportion of variance, apart from the error term, attributable to differences between sites, at a scale of 10(2) m. Spearman's ranked correlation showed consistency in spatial patterns of recruitment of pocilloporid corals between years, but not of acroporid corals. During spring, when only the brooding pocilloporid coral Stylophora pistillata reproduces at this locality, most coral recruitment occurred at central and southern sites adjacent to well-developed coral reefs. During summer, recruitment patterns varied significantly between years, with wide variation in the recruitment of broadcasting acroporid corals at northern sites located distant from coral reefs. Settlement was low at all sites during autumn and winter. This work is the first detailed analysis of coral recruitment patterns in the Red Sea, and contributes to the understanding of the spatial and temporal scales of variation in this important reef process.