Net community production and carbon export during the late summer in the Ross Sea, Antarctica
| Autor: | Robert B. Dunbar, David A. Mucciarone, Sarah K. Bercovici, Dennis A. Hansell, Hans B. DeJong, David A. Koweek |
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| Rok vydání: | 2017 |
| Předmět: |
Atmospheric Science
Global and Planetary Change Biogeochemical cycle 010504 meteorology & atmospheric sciences biology chemistry.chemical_element 010502 geochemistry & geophysics biology.organism_classification 01 natural sciences Algal bloom Late summer Oceanography chemistry Productivity (ecology) Phaeocystis Environmental Chemistry Environmental science Bloom Bay Carbon 0105 earth and related environmental sciences General Environmental Science |
| Zdroj: | Global Biogeochemical Cycles. 31:473-491 |
| ISSN: | 0886-6236 |
| DOI: | 10.1002/2016gb005417 |
| Popis: | The phytoplankton bloom in the Ross Sea is the largest in spatial extent and one of the most productive in Antarctica, yet the fate of the summer bloom remains poorly understood. Here we present carbon system data from the first biogeochemical process cruise to be conducted in both the western and central Ross Sea during late summer (February–March 2013). Using one-dimensional carbon budgets, we found evidence for substantial positive net community production (425 ± 204 mmol C m−2 d−1) during the late summer in Terra Nova Bay (TNB) of the western Ross Sea, which was rapidly exported to below 200 m. In addition, seasonally integrated carbon export was higher in diatom-dominated TNB (7.3 ± 0.9 mol C m−2) compared to the Phaeocystis antarctica-dominated central Ross Sea (3.4 ± 0.8 mol C m−2). Substantial late summer productivity and export may be a widespread phenomenon in Antarctic coastal regions that is not accounted for in regional carbon models. |
| Databáze: | OpenAIRE |
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