Coral density and predation affect growth of a reef-building coral
Coral density and predation affect growth of a reef-building coral
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珊瑚密度和捕食影响造礁珊瑚的生长
DOI：
10.1007/s00338-010-0694-2
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发表时间：
2011
期刊：
影响因子：
3.5
通讯作者：
J. Idjadi
中科院分区：
文献类型：
--
作者：
A. A. Shantz;A. Stier;J. Idjadi
捕食对石珊瑚生长的影响已得到越来越多的关注，虽然在何种程度上珊瑚同种密度可以修改的影响，食珊瑚动物仍然很少研究。在这里，一个现场实验被用来量化的珊瑚群落密度和珊瑚捕食者对大规模滨珊瑚骨骼生长的独立和综合影响。排除捕食者使珊瑚生长增加了20%。珊瑚密度的增加使生长速度提高了30%。然而，捕食者的影响是独立的珊瑚密度。可能的替代机制增加骨骼生长在较高的殖民地密度包括近场流的变化，导致光合作用的活性，营养吸收，或增加珊瑚共生的可访问性。
The influence of predation on the growth of stony corals has gained increased attention, although the degree to which coral conspecific density can modify the effects of corallivores remains poorly studied. Here, a field experiment was used to quantify the independent and combined effects of coral colony density and coral predators on the skeletal growth of massive Porites. Predator exclusion increased coral growth by 20%. Increasing coral density increased growth by 30%. However, the effect of predators was independent of coral density. Possible alternative mechanisms for increased skeletal growth at higher colony density include changes in near-field flow, resulting in increases in photosynthetic activity, nutrient uptake, or the increased accessibility of coral mutualists.