Occurrence of Nitrogen Fixing Cyanobacterium Trichodesmium under Elevated pCO2 Conditions in the Western Bay of Bengal
Joint Authors
Jena, Babula
Shetye, Suhas
Mohan, Rahul
Sudhakar, Maruthadu
Source
International Journal of Oceanography
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-07-22
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Earth Science , Water and Environment
History and Geography
Science
Abstract EN
Recent studies on the diazotrophic cyanobacterium Trichodesmium showed that increasing CO2 partial pressure (pCO2) enhances N2 fixation and growth.
We studied the in situ and satellite-derived environmental parameters within and outside a Trichodesmium bloom in the western coastal Bay of Bengal (BoB) during the spring intermonsoon 2009.
Here we show that the single most important nitrogen fixer in today’s ocean, Trichodesmium erythraeum, is strongly abundant in high (≥300 μatm) pCO2 concentrations.
N : P ratios almost doubled (~10) at high pCO2 region.
This could enhance the productivity of N-limited BoB and increase the biological carbon sequestration.
We also report presence of an oxygen minimum zone at Thamnapatnam.
Earlier studies have been carried out using lab cultures, showing the increase in growth rate of T.
erythraeum under elevated pCO2 conditions, but to our knowledge, this study is the first to report that in natural environment also T.
erythraeum prefers blooming in high pCO2 concentrations.
The observed CO2 sensitivity of T.
erythraeum could thereby provide a strong negative feedback to rising atmospheric CO2 but would also drive towards phosphorus limitation in a future high CO2 world.
American Psychological Association (APA)
Shetye, Suhas& Sudhakar, Maruthadu& Jena, Babula& Mohan, Rahul. 2013. Occurrence of Nitrogen Fixing Cyanobacterium Trichodesmium under Elevated pCO2 Conditions in the Western Bay of Bengal. International Journal of Oceanography،Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-464914
Modern Language Association (MLA)
Shetye, Suhas…[et al.]. Occurrence of Nitrogen Fixing Cyanobacterium Trichodesmium under Elevated pCO2 Conditions in the Western Bay of Bengal. International Journal of Oceanography No. 2013 (2013), pp.1-8.
https://search.emarefa.net/detail/BIM-464914
American Medical Association (AMA)
Shetye, Suhas& Sudhakar, Maruthadu& Jena, Babula& Mohan, Rahul. Occurrence of Nitrogen Fixing Cyanobacterium Trichodesmium under Elevated pCO2 Conditions in the Western Bay of Bengal. International Journal of Oceanography. 2013. Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-464914
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-464914