| 项目编号: | NE/D010470/2
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| 项目名称: | Chemosynthetically-driven ecosystems south of the Polar Front: biogeography and ecology |
| 作者: | Paul Tyler
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| 承担单位: | University of Oxford
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| 批准年: | 2009
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| 开始日期: | 2010-26-11
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| 结束日期: | 2013-30-09
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| 资助金额: | GBP69665
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| 资助来源: | UK-NERC
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| 项目类别: | Research Grant
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| 国家: | UK
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| 语种: | 英语
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| 特色学科分类: | Ecol, biodivers. & systematics 
; (45%)
; Genetics & development 
; (40%)
; Microbial sciences 
; (15%)
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| 英文摘要: | We propose an analysis of the chemosynthetic ecosystems in Antarctica south of the Polar Front. We will conduct a detailed investigation and analysis of four contrasting types of chemosynthetically-driven communities, together with their regional tectonic setting. The communities chosen for our investigation comprise: those associated with high-temperature, bare-rock hydrothermal vents (East Scotia Ridge), high-temperature, sediment-hosted hydrothermal activity (Bransfield Strait), mud volcanoes (South Sandwich fore-arc basin) and methane hydrates (north of King George Island). We propose three cruises and subsequent laboratory-based programmes. Cruise 1 will be to the East Scotia Sea where we will examine the tectonic setting and sample the hydrothermal discharge using autonomous underwater vehicles and the hydrothermal sampler BRIDGET. Cruise 2 will be to the same area and will use the UK Remotely Operated Vehicle (ROV) Isis to dive on, sample and characterise the biological and physical environment surrounding vent and seep sites identified during Cruise 1. Cruise 3 will be a combined geophysical, chemical and biological cruise, using the ROV Isis to dive upon and examine hydrothermal and cold seep environments both north and south of King George Island, Antarctic Peninsula. Subsequent analysis will compare the hydrothermal and seep chemistry among these four sites. We will use morphological, molecular, lipid and stable isotope analyses of microbial and metazoan populations to determine the phylogeography of species, and understand the food web processes. Our programme will determine whether colonisation of vents and seeps, in these most isolated of chemosynthetically-driven ecosystems, is driven by oceanographic or tectonic processes or whether any site is, instead, host to completely isolated evolution. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/103643
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | University of Oxford
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| Recommended Citation: | |
Paul Tyler. Chemosynthetically-driven ecosystems south of the Polar Front: biogeography and ecology. 2009-01-01.
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