两种造礁石珊瑚对海水酸化和溶解有机碳加富的响应*

doi:10.11978/2017018

热带海洋学报 ›› 2018, Vol. 37 ›› Issue (1): 57-63.doi: 10.11978/2017018CSTR: 32234.14.2017018

两种造礁石珊瑚对海水酸化和溶解有机碳加富的响应^*

郭亚娟^1,^2,³(), 周伟华^1,²(), 袁翔城¹(), 廖健祖^1,^2,³, 江雷^1,^2,³, 黄晖^1,²

1. 中国科学院南海海洋研究所中国科学院热带海洋生物资源与生态重点实验室, 广东广州 510301
2. 中国科学院海南热带海洋生物实验站, 海南三亚 572000
3. 中国科学院大学, 北京 100049

收稿日期:2017-02-17 修回日期:2017-06-16 出版日期:2018-01-20 发布日期:2018-02-02
作者简介:
作者简介：郭亚娟(1990—), 女, 河南省周口市人, 硕士, 从事海洋环境生态学研究。E-mail: guoyajuan15@mails.ucas.ac.cn
基金资助:
国家自然科学基金(31370499、31370500);国家科技支撑(2014BAC01B03)

Responses of two species of reef-building corals to acidification and dissolved organic carbon enrichment^*

Yajuan GUO^1,^2,³(), Weihua ZHOU^1,²(), Xiangcheng YUAN¹(), Jianzu LIAO^1,^2,³, Lei JIANG^1,^2,³, Hui HUANG^1,²

1. Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
2. Tropical Marine Biological Research Station in Hainan, Chinese Academy of Sciences, Sanya 572000, China
3. University of Chinese Academy of Sciences, Beijing 100049, China

Received:2017-02-17 Revised:2017-06-16 Online:2018-01-20 Published:2018-02-02
Supported by:
National Natural Science Foundation of China Projects (31370499, 31370500);National Key Technology Support Program (2014BAC01B03)

摘要/Abstract

摘要：

文章选择鹿回头近岸海域常见的板叶角蜂巢珊瑚(Favites complanata)和十字牡丹珊瑚(Pavona decussata)为研究对象, 采用室内连续培养的方法, 探究两种不同造礁石珊瑚对酸化和溶解有机碳(DOC)加富的响应。结果表明: 酸化(pH 7.6)并不会影响两种珊瑚的钙化速率和生长速率; 但DOC加富(524.03±78.42μmol•L^-1)使两种珊瑚的钙化速率分别降低67%和47%、生长速率降低59%和40%。当二者共同作用时, 两种珊瑚的钙化速率降低30%和11%、生长速率降低46%和59%, 大多没有DOC单独作用时强烈, 表现出一定的拮抗作用。两种珊瑚共生虫黄藻叶绿素荧光指数(F_v/F_m)均升高后降低, 板叶角蜂巢珊瑚F_v/F_m最先降低。实验表明, 这两种珊瑚虽然对海洋酸化的敏感度不高, 但是对有机物加富有不同的响应, 板叶角蜂巢珊瑚更为敏感, 可能导致这两种珊瑚在未来环境变化中有不同命运。

关键词: 酸化, 溶解有机碳加富, 板叶角蜂巢珊瑚, 十字牡丹珊瑚, 钙化速率, 生长速率, 最大光量子效率

Abstract:

Two common reef-building coral species in Luhuitou offshore areas, Favites complanata and Pavona decussata, were selected in our experiments. Continuous culture experiments (21 days) were conducted to evaluate the effects of acidification and dissolved organic carbon (DOC) enrichment on coral physiology. The results showed that: 1) acidification (pH 7.6) did not significantly affect the calcification rates and growth rates of these two coral species. However, in the treatment of DOC enrichment (524.03±78.42μmol•L^-1), the coral calcification rates decreased by 67% and 47%, respectively; the growth rates decreased by 59% and 40%, respectively. In the combined effects of acidification and organic matter enrichment, the calcification rates decreased by 67% and 47%, respectively; the growth rates decreased by 59% and 40%, respectively, but the reduction was less than DOC enrichment alone. To some degree, these results reflected some antagonistic action. The maximum quantum efficiency (F_v/F_m) of these two corals all increased in the early, meanwhile; F_v/F_m of Favites complanata decreased first. 2) Favites complanata and Pavona decussata responded differently to acidification and organic matter enrichment, indicating the species would have different fates in a changing environment in future.

Key words: acidification, DOC enrichment, Favites complanata, Pavona decussata, calcification rates, growth rates, F_v/F_m

中图分类号:

P735.12

郭亚娟, 周伟华, 袁翔城, 廖健祖, 江雷, 黄晖. 两种造礁石珊瑚对海水酸化和溶解有机碳加富的响应^*[J]. 热带海洋学报, 2018, 37(1): 57-63.

Yajuan GUO, Weihua ZHOU, Xiangcheng YUAN, Jianzu LIAO, Lei JIANG, Hui HUANG. Responses of two species of reef-building corals to acidification and dissolved organic carbon enrichment^*[J]. Journal of Tropical Oceanography, 2018, 37(1): 57-63.

图/表 5

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组别	pH	溶解有机碳浓度/(μmol•L^-1)
对照组	8.1	153.83±6.33
DOC组	8.1	524.03±78.42
酸化组	7.6	153.83±6.33
酸化和DOC组	7.6	524.03±78.42

两种造礁石珊瑚对海水酸化和溶解有机碳加富的响应^*

Responses of two species of reef-building corals to acidification and dissolved organic carbon enrichment^*

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两种造礁石珊瑚对海水酸化和溶解有机碳加富的响应*

Responses of two species of reef-building corals to acidification and dissolved organic carbon enrichment*

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两种造礁石珊瑚对海水酸化和溶解有机碳加富的响应^*

Responses of two species of reef-building corals to acidification and dissolved organic carbon enrichment^*