World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Influence of Physical and Biological Processes on the Seasonal Cycle of Biogenic Flux in the Equatorial Indian Ocean : Volume 10, Issue 11 (21/11/2013)

By Vidya, P. J.

Click here to view

Book Id: WPLBN0004003314
Format Type: PDF Article :
File Size: Pages 15
Reproduction Date: 2015

Title: Influence of Physical and Biological Processes on the Seasonal Cycle of Biogenic Flux in the Equatorial Indian Ocean : Volume 10, Issue 11 (21/11/2013)  
Author: Vidya, P. J.
Volume: Vol. 10, Issue 11
Language: English
Subject: Science, Biogeosciences
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2013
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Verenkar, A., Gauns, M., Ramaswamy, V., Kumar, S. P., Unger, D., & Vidya, P. J. (2013). Influence of Physical and Biological Processes on the Seasonal Cycle of Biogenic Flux in the Equatorial Indian Ocean : Volume 10, Issue 11 (21/11/2013). Retrieved from http://www.ebooklibrary.org/


Description
Description: National Institute of Oceanography, Dona Paula, Goa-403 004, India. Seasonal cycle of biogenic fluxes obtained from sediment trap at two locations 5°24' N, 86°46' E (southern Bay of Bengal trap; SBBT) and 3°34' N, 77°46' E (equatorial Indian Ocean trap; EIOT) within the equatorial Indian Ocean (EIO) were examined to understand the factors that control them. The sediment trap data at SBBT was collected for ten years from November 1987 while that at EIOT was for a one year period from January 1996. The characteristic of biogenic flux at SBBT was the strong seasonality with peak flux in August, while lack of seasonality characterised the flux at EIOT. The high chlorophyll biomass at the SBBT during the summer monsoon was supported by a combination of processes such as wind-mixing and advection, both of which supplied new nitrogen to the upper ocean. In contrast, the elevated chlorophyll at EIOT during summer monsoon was supported only by wind mixing. High cell counts of phytoplankton (> 5 μm) at SBBT dominated by diatoms suggest the operation of classical food web and high carbon export. On the contrary, dominance of pico-phytoplankton and one-and-a-half time higher magnitude of micro-zooplankton biomass along with 2-fold lesser meso-zooplankton at EIOT indicated the importance of microbial loop. The substantial decrease in the carbon export at EIOT indicated faster remineralization of photosynthetically produced organic matter.

Summary
Influence of physical and biological processes on the seasonal cycle of biogenic flux in the equatorial Indian Ocean

Excerpt
Honjo, S., Dymond, J., Prell, W., and Ittekkot, V.: Monsoon-controlled export fluxes to the interior of the Arabian Sea, Deep Sea Res. II, 46, 1859–1902, 1999.; Balmaseda, M. A., Vidard, A., and Anderson, D. L. T.: The ECMWF Ocean Analysis System: ORA-S3, Mon. Weather Rev., 136, 3018–3034, 2008.; Banse, K.: Reflections about chance in my career, and on the Top-down regulated world, Annu. Rev. Mar. Sci., 5, 1–19, 2013.; Beatriz, M. B., Fasham, M. J. R., and Bowles, M. C.: Ocean biogeochemistry and Global Change: JGOFS Research Highlights 1988–2000, SCOR, IGBP, National Science Foundation, Research Council of Norway, University of Bergen, IGBP Science Series 2, 36 pp., 2001.; Betzer, P. R., Showers, W. J., Laws, E. A., Winn, C. D., DiTullio, G. R., and Kroopnick, P. M.: Primary productivity and particle fluxes on a transect of the equator at 153° W in the Pacific Ocean, Deep-Sea Res., 31, 1–11, 1984.; Honjo, S.: Seasonality and interaction of biogenic and lithogenic particulate flux at the Panama Basin, Science, 218, 883–884, 1982.; Bishop, J. K. B.: Regional extremes in particulate matter composition and flux: effects on the chemistry of the ocean interior, in: Productivity of the ocean: Present and past, edited by: Berger, W. H., Smetacek, V. S., and Wefer, G., J. Wiley and Sons, Chichester, UK, 117–137, 1989.; Bonjean, F. and Lagerloef, G. S. E.: Diagnostic model and analysis of the surface currents in the tropical Pacific ocean, J. Phys. Oceanogr., 32, 2938–2954, 2002.; Boyd, P. W. and Trull, T. W.: Understanding the export of biogenic particles in oceanic waters: Is there consensus?, Prog. Oceanogr., 72, 276–312, doi:10.1016/j.pocean.2006.10.007, 2007.; Bradtmiller, L. I., Anderson, R. F., Fleisher, M. Q., and Burckle, L. H.: Opal burial in the equatorial Atlantic Ocean over the last 30 ka: Implications for glacial- interglacial changes in the ocean silicon cycle, Paleoceanography, 22, PA4216, doi:10.1029/2007PA001443, 2007.; Bubnov, V. A.: Climatic zonal pressure gradient in the equatorial zone of the Indian Ocean, Oceanology, 33, 414–420, 1994.; Buesseler, K. O.: The decoupling of production and particulate export in the surface ocean, Global Biogeochem. Cy., 12, 297–310, 1998.; Buesseler, K. O., Antia, A. N., Chen, M., Fowler, S. W., Gardner, W. D., Gustafsson, O., Harada, K., Michaels, A. F., Rutgers van der Loeff, M., Sarin, M., Steinberg, D. K., and Trull, T.: An assessment of the use of sediment traps for estimating upper ocean particle fluxes, J. Mar. Res., 65, 345–416, 2007.; Carr, M.-E., Friedrichs, M. A. M., Schmeltz, M., Aita, M. N., Antoine, D., Arrigo, K. R., Asanuma, I., Aumont, O., Barber, R., Behrenfeld, M., Bidigare, R., Buitenhuis, E. T., Cambell, J., Ciotti, A., Dierssen, H., Dowell, M., Dunne, J., Esaias, W., Gentili, B., Gregg, W., Groom, S., Hoepffner, N., Ishizaka, J., Kameda, T., LeQuéré, C., Lohrenz, S., Marra, J., Mélin, F., Moore, K., Morel, A., Reddy, T. E., J. Ryan, M. Scardi, Smyth, T., Turpie, K Tilstone, G., Waters, K., and Yamanaka, Y.: A comparison of global estimates of marine primary production from ocean color, Deep-Sea Res. II, 533, 741770 doi:10.1016/j.dsr2.2006.01.028, 2006.; Clarke, A. J. and Liu, X.: Observations and dynamics of semiannual and annual sea levels, J. Phys. Oceanogr., 23, 386–399, 1993.; Fernandes, V., Rodrigues, V., Ramaiah, N., and Paul, J. T.: Relevance of bacterioplankton abundance and production in the oligotrophic equatorial Indian Ocean, Aquat. Ecol., 42, 511–519, 2008.; Fischer, G., Fütterer, D., Gersonde, R., Honjo, S., Ostermann, D., and Wefer, G.: Seasonal variability of particle flux in the Weddell Sea and its relation to ice cover, Nature, 335, 426–428, 1988.; Frouin, R. and Murakami, H.: Estimating Photosynthetically Available Radiation at the Ocean surf


 

Click To View

Additional Books


  • Proceedings of the Royal Society of Vict... (by )
  • Aerosol Fluxes and Particle Growth Above... (by )
  • The Benthic Foraminiferal Community in a... (by )
  • Technical Note: the Determination of Enc... (by )
  • Distributions and Assemblages of Larval ... (by )
  • Spatial and Temporal Variability in Nutr... (by )
  • Updated Estimates of Carbon Accumulation... (by )
  • Abhandlungen Der Königlichen Akademie De... Volume: 1876 (by )
  • An Observed 20 Yr Time-series of Agulhas... (by )
  • Depth Dependence of Westward-propagating... (by )
  • Methylated Arsenic and Antimony Species ... (by )
  • Bulletin - New York State Museum Volume: no. 33 1900 (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.