Benthic recycling of biogenic debris in the eastern tropical Atlantic Ocean

Details Benthic recycling of biogenic debris in the eastern tropical Atlantic Ocean Benthic recycling of biogenic debris in the eastern tropical Atlantic Ocean

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989gecoa..53.2947j&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 53, Issue 11, pp.2947-2960

Computer Science

9

Scientific paper

Distributions of pore water O 2 , NO - 2 , NO - 3 , NH + 4 , Si(OH) 4 , PO 3- 4 , Mn 2+ , F - , and T.A. were determined at 15 stations in the eastern equatorial Atlantic. While overall profile characteristics are consistent with previous models of organic matter diagenesis, profile shapes suggest that a deep reaction layer, rich in organic C, is also present at many sites. While it is unlikely that the oxidation of organic C in this layer has had a major effect on the ocean C cycle, pore water profile shapes are significantly altered. Despite exposure to seawater SO 2- 4 concentrations for > 1000 years, decomposition of the organic matter in the layer appears to be restricted to oxic and suboxic processes. These results suggest major differences in organic carbon decomposition and preservation under oxic/suboxic and anoxic conditions. Present-day benthic fluxes are largest adjacent to the eastern boundary coastal upwelling region and similar in magnitude to values reported for the eastern Pacific. Preliminary estimates suggest that the benthic respiration in the eastern of the North Atlantic south of 20°N may alone account for >20% of the total deep North Atlantic respiration. Combining these results with estimates of organic C burial and deep water-column decomposition suggests that this region is a major location of organic C input into the deep sea.

Affiliated with

Also associated with

No associations

Rating

Benthic recycling of biogenic debris in the eastern tropical Atlantic Ocean does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Benthic recycling of biogenic debris in the eastern tropical Atlantic Ocean, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Benthic recycling of biogenic debris in the eastern tropical Atlantic Ocean will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1615403