DOI: 10.5194/bg-17-887-2020
论文题名: Intercomparison of four methods to estimate coral calcification under various environmental conditions
作者: Gómez Batista M. ; Metian M. ; Oberhänsli F. ; Pouil S. ; Swarzenski P.W. ; Tambutté E. ; Gattuso J.-P. ; Alonso Hernández C.M. ; Gazeau F.
刊名: Biogeosciences
ISSN: 17264170
出版年: 2020
卷: 17, 期: 4 语种: 英语
Scopus关键词: calcification
; calcium carbonate
; comparative study
; coral
; coral reef
; environmental change
; environmental conditions
; estimation method
; global warming
; marine ecosystem
; Anthozoa
; Stylophora pistillata
英文摘要: Coral reefs are constructed by calcifiers that precipitate calcium carbonate to build their shells or skeletons through the process of calcification. Accurately assessing coral calcification rates is crucial to determine the health of these ecosystems and their response to major environmental changes such as ocean warming and acidification. Several approaches have been used to assess rates of coral calcification, but there is a real need to compare these approaches in order to ascertain that high-quality and intercomparable results can be produced. Here, we assessed four methods (total alkalinity anomaly, calcium anomaly, 45Ca incorporation, and 13 incorporation) to determine coral calcification of the reef-building coral Stylophora pistillata. Given the importance of environmental conditions for this process, the study was performed under two starting pH levels (ambient: 8.05 and low: 7.2) and two light (light and dark) conditions. Under all conditions, calcification rates estimated using the alkalinity and calcium anomaly techniques as well as 45Ca incorporation were highly correlated. Such a strong correlation between the alkalinity anomaly and 45Ca incorporation techniques has not been observed in previous studies and most probably results from improvements described in the present paper. The only method which provided calcification rates significantly different from the other three techniques was 13 incorporation. Calcification rates based on this method were consistently higher than those measured using the other techniques. Although reasons for these discrepancies remain unclear, the use of this technique for assessing calcification rates in corals is not recommended without further investigations. © 2020 Copernicus GmbH. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159214
Appears in Collections: 气候变化与战略
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作者单位: Centro de Estudios Ambientales de Cienfuegos, Cienfuegos, Cuba; International Atomic Energy Agency, Environment Laboratories, 4a Quai Antoine 1er, Monaco, 98000, Monaco; Centre Scientifique de Monaco, Department of Marine Biology, Monaco, 98000, Monaco; Sorbonne Université, CNRS, Laboratoire d'Océanographie de Villefranche, LOV, Villefranche-sur-Mer, 06230, France; Institute for Sustainable Development and International Relations, Sciences Po, 27 rue Saint Guillaume, Paris, 75007, France
Recommended Citation:
Gómez Batista M.,Metian M.,Oberhänsli F.,et al. Intercomparison of four methods to estimate coral calcification under various environmental conditions[J]. Biogeosciences,2020-01-01,17(4)