Bioavailable dissolved organic matter and biological hot spots during austral winter in Antarctic waters

Shen, Yuan; Benner, Ronald; Murray, Alison E.; Gimpel, Carla; Greg Mitchell, B.; Weiss, Elliot L.; Reiss, Christian

doi:10.1002/2016jc012301

i

Bioavailable dissolved organic matter and biological hot spots during austral winter in Antarctic waters

Supporting Files

2017
By Shen, Yuan ; Benner, Ronald ; Murray, Alison E. ; ...

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Journal Title:

Journal of Geophysical Research: Oceans
Personal Author:

Shen, Yuan ; Benner, Ronald ; Murray, Alison E. ; Gimpel, Carla ; Greg Mitchell, B. ; Weiss, Elliot L. ; Reiss, Christian
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; SWFSC (Southwest Fisheries Science Center)
Description:

Primary production and heterotrophic bacterial activity in the Antarctic Ocean are generally low during the austral winter. Organic carbon is considered to be a major factor limiting bacterialmetabolism, but few studies have investigated the bioavailability of organic matter during winter. Herein, the chemical composition and bioavailability of dissolved organic matter (DOM) were investigated in surface (5–100 m) and mesopelagic (200–750 m) waters off the northwestern Antarctic Peninsula duringAugust 2012. Concentrations of dissolved organic carbon (DOC) were low (42 64mmol L 21) and showed no apparent spatial patterns. By contrast, the composition of DOM exhibited signiﬁcant spatial trends that reﬂected varying ecosystem productivity and water masses. Surface distributions of chlorophyll- aand par-
Keywords:

Earth And Planetary Sciences (miscellaneous) Geochemistry And Petrology Geophysics Oceanography Space And Planetary Science Earth And Planetary Sciences (miscellaneous) Geochemistry And Petrology Space And Planetary Science Earth And Planetary Sciences (miscellaneous) Geochemistry And Petrology Space And Planetary Science
Source:

Journal of Geophysical Research: Oceans, 122(1), 508-520
DOI:

https://doi.org/10.1002/2016jc012301
ISSN:

2169-9275
Format:

PDF
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
Rights Information:

Other
Compliance:

Library
Main Document Checksum:

urn:sha256:6e214c6fbe0f1ee3cfbb6b64b1a8a1de463d75e77e61b9537543054e9774980d
Download URL:

https://repository.library.noaa.gov/view/noaa/54660/noaa_54660_DS1.pdf
File Type:

[PDF - 1.46 MB ]

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