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- Title
Significant roles of bacteriochlorophylla supplemental to chlorophylla in the ocean.
- Authors
Nianzhi Jiao; Fan Zhang; Ning Hong
- Abstract
Bacteriochlorophylla (BChla)-based phototrophy cannot be ignored in understanding of carbon cycle in the ocean. However, the role of BChla relative to chlorophylla (Chla) along environmental gradients remains unclear. On the basis of the investigations in the Pacific, Indian Oceans and the China Seas, we show that the average contribution of BChla relative to Chla is higher in open-ocean compared with shelf environments, the estimated BChla-based phototrophy could reduce respiratory organic carbon consumption of 2.4% and 5.4% of the primary productions in the shelf and oceanic waters, respectively. This suggests that BChla-based phototrophy has an important role supplemental to Chla-based photosynthesis in the ocean's carbon cycle and would be critical for a marine region to be a sink or a source of atmospheric CO2.
- Subjects
INDIAN Ocean; CHINA Sea; CARBON cycle; PHOTOSYNTHESIS; MARINE biology; OCEANOGRAPHIC research
- Publication
ISME Journal: Multidisciplinary Journal of Microbial Ecology, 2010, Vol 4, Issue 4, p595
- ISSN
1751-7362
- Publication type
Article
- DOI
10.1038/ismej.2009.135