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High-resolution climatic impacts on shallow-water marine ecosystems during the Holocene

全新世高分辨率气候对浅水海洋生态系统的影响

基本信息

批准号：
NE/D008727/1
负责人：
Nicholas Kamenos
金额：
$ 39.24万
依托单位：
University of Glasgow
依托单位国家：
英国
项目类别：
Fellowship
财政年份：
2006
资助国家：
英国
起止时间：
2006 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=NE%2FD008727%2F1
关键词：
resolution climatic impacts shallow water

项目摘要

Climate change has been described as 'one of the most pressing matters to mankind' by Sir David King, the Chief Scientific advisor to the government and its impacts are to be seen both in terrestrial and marine environments. Oceanic water circulation controls regional climate change in North West Europe and also affects marine ecosystems, fisheries and climatic susceptibility to man-made emissions. If attempts to model the impacts of future climate change on marine ecosystems and associated fisheries are to succeede, we require a highly detailed description of how past climatic changes have affected those ecosystems. This can be achieved by examining how climatic variability has impacted marine ecosystems during the last ~10000 years, the Holocene. However, no such highly-detailed data exist for North West Europe. This study will investigate fossil assemblages preserved in chronologically ordered, shallow-water, marine carbonate deposits spanning most of the Holocene. The stratified carbonate deposits targetted are formed by algae and host very diverse communities of associated organisms while alive, making them ideal recorders of past assemblage structure, yet remain un-utilised in that capacity to date. Any changes in those associated assemblages with time, will be related to historical changes in marine climate obtained from a novel organic recorder developed for this investigation, the algal deposit itself. Data obtained by this investigation have important applications in determining how predicted future climate change is likely to impact marine ecosystems and humans who are the end users of comercially targeted ecosystems. Additionlly, organic recorders of past temperatures are urgently needed for the North Atlantic to help refine European climate predictions for the next 100 years. Thus the highly detailed data yielded from the novel recorder developed for this study has wider significance in obtaining sub-annual historical temperature data for North Atlantic oceanic circulation, which may feed into a global push to better understand the dynamics of heat transfer in northern seas affecting regional climates during the Holocene.

政府首席科学顾问大卫金爵士将气候变化描述为“人类最紧迫的问题之一”，其影响将在陆地和海洋环境中看到。海洋水循环控制着西北欧的区域气候变化，也影响着海洋生态系统、渔业和气候对人为排放的敏感性。如果要成功模拟未来气候变化对海洋生态系统和相关渔业的影响，我们需要非常详细地描述过去的气候变化如何影响这些生态系统。这可以通过研究气候变化如何影响海洋生态系统在过去的10000年，全新世。然而，西北欧没有如此详细的数据。这项研究将调查化石组合保存在年代顺序，浅水，海洋碳酸盐沉积物跨越全新世的大部分。目标分层碳酸盐沉积物是由藻类形成的，并且在活着的时候拥有非常多样化的相关生物群落，使它们成为过去组合结构的理想记录者，但迄今为止仍未被利用。这些相关组合随时间的任何变化，将与海洋气候的历史变化有关，海洋气候的历史变化是从一种新的有机记录器中获得的，这种记录器是为这次调查开发的，即藻类存款本身。本次调查获得的数据在确定预测的未来气候变化可能如何影响海洋生态系统和作为商业目标生态系统最终用户的人类方面具有重要的应用。此外，北大西洋迫切需要过去温度的有机记录器，以帮助完善欧洲未来100年的气候预测。因此，从本研究开发的新型记录器中获得的高度详细的数据具有更广泛的意义，在获得北大西洋海洋环流的次年度历史温度数据，这可能会成为一个全球推动，以更好地了解在北方海洋热传递的动态影响区域气候在全新世。