Show simple item record

dc.contributor.authorO'Daly, Stephanie Hicks
dc.date.accessioned2020-02-13T23:27:57Z
dc.date.available2020-02-13T23:27:57Z
dc.date.issued2019-12
dc.identifier.urihttp://hdl.handle.net/11122/10908
dc.descriptionThesis (M.S.) University of Alaska Fairbanks, 2019en_US
dc.description.abstractIt has been hypothesized that climate change will reduce the strength and episodic nature of vernal phytoplankton blooms, increase heterotrophy of microbes and zooplankton, and weaken the tight coupling between pelagic and benthic production that is characteristic of Arctic continental shelves. As a part of the Arctic Shelf Growth, Advection, Respiration, and Deposition rates measurement (ASGARD) project, I quantified sinking particle fluxes and incubated sinking particles to measure the rate of microbial respiration associated with those particles. These measurements were used to characterize the strength of the pelagic-benthic connection. After a record-breaking year of warm temperatures and low-ice conditions in the northern Bering and southern Chukchi Seas, we observed massive vernal fluxes of sinking particulate organic carbon, ranking amongst the highest observed in the global oceans. Moreover, low rates of particle-associated microbial respiration indicate negligible recycling of sinking organic matter within the water column. These results suggest that the strength of the biological carbon pump may be maintained or enhanced in a warming Arctic, supporting strong benthic and upper trophic level productivity and carbon export.en_US
dc.description.sponsorshipNorth Pacific Research Board, grant numbers G-11255 and G-12333en_US
dc.language.isoen_USen_US
dc.titleCarbon flux and particle-associated microbial remineralization rates in the northern Bering and southern Chukchi seasen_US
dc.typeThesisen_US
dc.type.degreemsen_US
dc.identifier.departmentDepartment of Oceanographyen_US
dc.contributor.chairMcDonnell, Andrew M. P.
dc.contributor.committeeHardy, Sarah M.
dc.contributor.committeeJohnson, Mark A.


Files in this item

Thumbnail
Name:
ODaly_S_2019.pdf
Size:
3.448Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record