Moderate zooxanthellate coral growth rates in the lower photic zone
Moderate zooxanthellate coral growth rates in the lower photic zone
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低透光区虫黄藻珊瑚生长速度适中
DOI:
10.1007/s00338-020-01960-4
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发表时间:
2020
期刊:
影响因子:
3.5
通讯作者:
Shen Chuan-Chou
中科院分区:
文献类型:
--
作者:
Kahng Samuel E.;Watanabe Takaaki K.;Hu Hsun-Ming;Watanabe Tsuyoshi;Shen Chuan-Chou
The ecology of phototrophic corals in the lower photic zone remains poorly understood. Studies to date indicate that growth rates generally decrease as available light attenuates with depth and are very slow at depths > 40 m. Here, we provide detailed evidence for moderate growth for obligate zooxanthellate corals at extreme depths. Using reliable U–Th dating techniques,Leptoserisspp. from 70 to 110 m in Hawaii were determined to grow (linear extension) from 8.0 ± 3.0 to 24.6 ± 2.7 mm yr−1. Given the modest growth rates of other agariciids in well-lit shallow waters, these deep-water growth rates are unexpectedly high, suggest specialized physiology and help alter the traditional paradigm on photo-ecology in mesophotic coral ecosystems. The thin plate-like colonies ofLeptoserisspp., which dominate the coral community in the lower photic zone throughout the Indo-Pacific, primarily grow radially and do not appear to appreciably thicken over time. In the lower photic zone, this growth strategy maximizes surface area with minimal calcification, thereby enablingLeptoseristo expand planar area more quickly than thickly calcified species. Photosynthetic and growth efficiencies may also be facilitated by the optical geometry of their skeletons, increased access to inorganic nutrients and cooler temperatures at depth. These robust growth rates have important implications on the recovery potential of MCE habitat in the event of disturbance.
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DOI:
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发表时间:
2008
期刊:
影响因子:
--
作者:
G. Corno;Ricardo M. Letelier;Mark R. Abbott;David M. Karl
通讯作者:
David M. Karl
影响因子:
2.7
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Heather L. Spalding
DOI:
10.1016/j.cosust.2013.11.019
发表时间:
2014-04-01
影响因子:
7.2
作者:
Kahng, S. E.;Copus, J. M.;Wagner, D.
通讯作者:
Wagner, D.
影响因子:
3.3
作者:
Crabbe, M. J. C.
通讯作者:
Crabbe, M. J. C.
DOI:
10.3755/galaxea.15.2_39
发表时间:
2013
期刊:
影响因子:
--
作者:
S. Kahng
通讯作者:
S. Kahng