Geography
Mass balance estimates of carbon export in different water masses of the Chukchi Sea shelf
Document Type
Article
Abstract
We construct mass-balance based estimates of carbon (C) export fractions from the water column across the Chukchi Sea shelf. Export is calculated as the difference between phytoplankton drawdown of dissolved inorganic C (DIC) and the accumulation of autochthonous particulate and dissolved organic C in the water column. Organic carbon (Corg) exports of >50% of DIC drawdown are ubiquitous across the shelf, even during, or shortly after, phytoplankton blooms, suggesting widespread and strong pelagic-benthic coupling. Export fractions on the shelf were generally greater in the less-productive Alaska Coastal Water than in the more productive Bering Shelf-Anadyr Water. Additionally, export fractions were greater in 2011 than in 2010, highlighting the significant spatial and inter-annual variability of the fate of Corg in this ecologically and biogeochemically important, and rapidly changing, ecosystem.
Publication Title
Deep-Sea Research Part II: Topical Studies in Oceanography
Publication Date
8-2016
Volume
130
First Page
88
Last Page
99
ISSN
0967-0645
DOI
10.1016/j.dsr2.2016.05.003
Keywords
carbon export, Chukchi, Pelagic-benthic coupling, phytoplankton, sea ice
Repository Citation
Strong, Aaron L.; Lowry, Kate E.; Brown, Zachary W.; Mills, Matthew M.; van Dijken, Gert L.; Pickart, Robert S.; Cooper, Lee W.; Frey, Karen E.; Benner, Ron; Fichot, Cédric G.; Mathis, Jeremy T.; Bates, Nicholas R.; and Arrigo, Kevin R., "Mass balance estimates of carbon export in different water masses of the Chukchi Sea shelf" (2016). Geography. 206.
https://commons.clarku.edu/faculty_geography/206
