Benthic foraminifera as tracers of marine biogeochemical cycles and circulation: resolving microhabitats in relation to biogenic fluxes

底栖有孔虫作为海洋生物地球化学循环和环流的示踪剂：解析与生源通量有关的微生境摘要本项目将开发联合收割机微型传感器与小尺度沉积物取样相结合的技术，以探测各种尺度的有孔虫分布，并确定底栖有孔虫对可变生源通量的响应和分布模式。主要目标将是测试和开发一套子采样技术，使我们能够。这项研究将提供基础数据，以更好地模拟底栖有孔虫组合组成的第一原则，并将揭示可能的化学微环境，影响有孔虫壳地球化学。反过来，这项研究的结果将汇集底栖地球化学和微生态学技术，以澄清有孔虫中环境代用信息的编码。实地研究将在挪威极地研究所前往挪威斯瓦尔巴特群岛西部峡湾的一次航行中进行，将涉及表层沉积物多芯取样、制作微型传感器剖面图和使用细胞跟踪绿色方法检查生物特征。这项研究将为一个积极促进本科生和研究生研究经验的项目提供支持，并将包括一个强大的国际合作部分。该项目得到海洋科学司海洋地质地球物理方案和国际科学和工程处的支助。

Benthic foraminifera as tracers of marine biogeochemical cycles and circulation: resolving microhabitats in relation to biogenic fluxesAbstractThis project will develop techniques that combine microsensors with small-scale sediment sampling, in order to probe foraminiferal distributions at a range of scales and to determine the responses and distributional patterns of benthic foraminifera to variable biogenic fluxes. The primary objective will be to test and develop a suite of sub-sampling techniques that allow us to This research will provide fundamental data to better model benthic foraminiferal assemblage composition from first principles, and will reveal likely chemical microenvironments that influence foraminiferal shell geochemistry. In turn, the results of this research will bring together techniques in benthic geochemistry and micro-ecology to clarify the encoding of environmental proxy information in the foraminifera. The field research will take place on a Norwegian Polar Institute cruise to a fjord on the west of Svalbard, Norway and will involve multi-coring of surface sediments, production of microsensor profiles and examination of biofeatures using the cell tracker green method. This research will provide support for a program that has actively promoted research experiences for both undergraduate and graduate students, and will include a strong international collaboration component. This project is supported by both the Marine Geology & Geophysics Program of the Ocean Sciences Division and the Office of International Science and Engineering.