RAPID: Collaborative Research: Marine Ecosystem Response to the Larsen C Ice-Shelf Breakout: "Time zero"

GSTDTAP

项目编号	1822256
	RAPID: Collaborative Research: Marine Ecosystem Response to the Larsen C Ice-Shelf Breakout: "Time zero"
	Craig Smith (Principal Investigator)
主持机构	University of Hawaii
项目开始年	2018
	2018-03-01
项目结束日期	2019-02-28
资助机构	US-NSF
项目类别	Standard Grant
项目经费	26093(USD)
国家	美国
语种	英语
英文摘要	Marine ecosystems under large ice shelves are thought to contain sparse, low-diversity plankton and seafloor communities due the low supply of food from productive sunlight waters. Past studies have shown sub-ice shelf ecosystems to change in response to altered oceanographic processes resulting from ice-shelve retreat. However, information on community changes and ecosystem structure under ice shelves are limited because sub-ice-shelf ecosystems have either been sampled many years after ice-shelf breakout, or have been sampled through small boreholes, yielding extremely limited spatial information. The recent breakout of the A-68 iceberg from the Larsen C ice shelf in the western Weddell Sea provides an opportunity to use a ship-based study to evaluate benthic communities and water column characteristics in an area recently vacated by a large overlying ice shelf. The opportunity will allow spatial assessments at the time of transition from an under ice-shelf environment to one initially exposed to conditions more typical of a coastal Antarctic marine setting. This RAPID project will help determine the state of a coastal Antarctic ecosystem newly exposed from ice-shelf cover and will aid in understanding of rates of community change during transition. The project will conduct a 10-day field program, allowing contrasts to be made of phytoplankton and seafloor megafaunal communities in areas recently exposed by ice-shelf loss to areas exposed for many decades. The project will be undertaken in a collaborative manner with the South Korean Antarctic Agency, KOPRI, by participating in a cruise in March/May 2018. Combining new information in the area of Larsen C with existing observations after the Larsen A and B ice shelf breakups further to the north, the project is expected to generate a dataset that can elucidate fundamental processes of planktonic and benthic community development in transition from food-poor to food-rich ecosystems. The project will provide field experience to two graduate students, a post-doctoral associate and an undergraduate student. Material from the project will be incorporated into graduate courses and the project will communicate daily work and unfolding events through social media and blogs while they explore this area of the world that is largely underexplored. This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/72310
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	Craig Smith .RAPID: Collaborative Research: Marine Ecosystem Response to the Larsen C Ice-Shelf Breakout: "Time zero".2018.