Collaborative Research: Resiliency of corals to changing saturation state: A field study.

合作研究：珊瑚对饱和状态变化的恢复力：实地研究。

• 批准号: 0550588
• 负责人: Peter Swart
• 金额: --
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-07-01 至 2010-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0550588&HistoricalAwards=false
• 关键词: Collaborative; Research; Resiliency; corals; changing

Abstract (Swart 0550588)Evidence has shown that the changing carbonate saturation state, triggered by the rise in atmospheric CO2, may have a negative influence upon the calcification of scleractinian corals. However, such decreases have to date not been recognized in cores taken from coral skeletons. This proposal will explore the question of whether corals are able to adapt their growth to reduced saturation conditions to help solve this dilemma by using corals growing in marginal environments, which exhibit wide ranges in calcium carbonate saturation. Environments, such as Florida Bay, contain a small but apparently robust community of survivor corals maintaining extension rates comparable to corals on the nearby reef tract in spite of large and documented changes in saturation state. The PIs plan to use large colonies of the genus Solenastrea sp. that grow in Florida Bay to conduct a unique experiment in which they will allow the natural environment to manipulate the saturation state. Every two months over an 18 month period, calcification will be measured together with other physiological parameters. Superimposed upon this natural variation, the PIs will impose changes in saturation aimed at unraveling the competing influences of salinity and saturation state on calcification and extension. Finally, they will examine the density and geochemical record within the coral skeleton in order to determine what influences the changing pCO2 and whether past changes in pCO2 can be read from the skeletal record.

摘要 (Swart 0550588)有证据表明，大气中二氧化碳含量上升引发的碳酸盐饱和状态的变化可能会对石珊瑚的钙化产生负面影响。 然而，迄今为止，在从珊瑚骨骼中取出的岩心中尚未发现这种减少。该提案将探讨珊瑚是否能够适应其生长以适应降低的饱和度条件的问题，以通过使用生长在边缘环境中的珊瑚来帮助解决这一困境，这些珊瑚的碳酸钙饱和度范围很大。 佛罗里达湾等环境中包含一个规模虽小但显然很强大的幸存者珊瑚群落，尽管饱和状态发生了巨大且有记录的变化，但其扩张率仍与附近珊瑚礁区的珊瑚相当。 PI 计划使用 Solenastrea sp 属的大型菌落。生长在佛罗里达湾的植物进行了一项独特的实验，其中它们将允许自然环境操纵饱和状态。 在 18 个月的时间内，每两个月都会测量一次钙化情况以及其他生理参数。 叠加在这种自然变化上，PI 将施加饱和度变化，旨在揭示盐度和饱和状态对钙化和延伸的竞争影响。 最后，他们将检查珊瑚骨骼内的密度和地球化学记录，以确定影响 pCO2 变化的因素以及是否可以从骨骼记录中读取 pCO2 过去的变化。

项目成果

Stress-tolerant corals of Florida Bay are vulnerable to ocean acidification

佛罗里达湾的耐压珊瑚很容易受到海洋酸化的影响

• DOI: 10.1007/s00338-013-1015-3
• 发表时间: 2013-09
• 期刊: Coral Reefs
• 影响因子: 3.5
• 作者: Okazaki, R. R.;Swart, P. K.;Langdon, C.
• 通讯作者: Langdon, C.

Species‐specific responses to climate change and community composition determine future calcification rates of Florida Keys reefs

• DOI: 10.1111/gcb.13481
• 发表时间: 2017-03-01
• 期刊: Global Change Biology
• 影响因子: 11.6
• 作者: R. R. Okazaki;Erica K. Towle;R. van Hooidonk;C. Mor;Rivah N. Winter;A. Piggot;R. Cunning;A. Baker
• 通讯作者: A. Baker