TY - JOUR
T1 - Acumulación de carbono orgánico total y carbonato de calcio en la zona de oxígeno mínimo del Pacífico nororiental mexicano
AU - Sánchez, Alberto
AU - González-Yajimovich, Oscar
AU - Balart, Eduardo
AU - López-Ortiz, B. Estela
AU - Aguíñiga-García, Sergio
AU - Ortiz-Hernández, Ma Concepción
N1 - Funding Information:
This work was supported in part by a Grant-in-Aid for Cancer Research from the Japanese Ministry of Health and Welfare (7-23) and a grant from Bristol-Myers Squibb (Tokyo, Japan). We wish to thank Mr Seiji Ito, Oncology Department staff. Bristol-Myers Squibb, Tokyo, Japan, for his help in the data collection and analysis and Dr Luigi Lenaz, Medical Doctor, Bristol-Myers Squibb, Princeton, NJ, USA, for critically reviewing multiple drafts of the manuscript.
PY - 2013
Y1 - 2013
N2 - The distribution and preservation of the total organic carbon (TOC) and CaCO3 in marine sediments is important because its connection to the carbon cycle and the regulation of atmospheric CO2. Studies of the sinking, accumulation and carbon burial are limited and therefore it is necessary to know, identify and quantify the content of this element in marginal sediments. In the present work was determined the distribution and accumulation of TOC and CaCO3 in surface sediments with different conditions of oxygenation of the water column in the southwestern margin of the Peninsula of Baja California. The highestaccumulation of TOC occurred over a wide oxygen minimum zone (OMZ), TOC gradually decreases towards the coastline. The deposition and accumulation of CaCO3 was preferentially higher in the region where the OMZ is narrow and deep. The 2 to 8% of TOC generated in the photic zone is preserved and buried in the sediment, being consistent with values calculated by models of the ocean biological pump. The TOC and CaCO3 accumulation suggest that this region is important and key in the global carbon cycle of the ocean, and contributed significantly in regulating the climate changes in the past.
AB - The distribution and preservation of the total organic carbon (TOC) and CaCO3 in marine sediments is important because its connection to the carbon cycle and the regulation of atmospheric CO2. Studies of the sinking, accumulation and carbon burial are limited and therefore it is necessary to know, identify and quantify the content of this element in marginal sediments. In the present work was determined the distribution and accumulation of TOC and CaCO3 in surface sediments with different conditions of oxygenation of the water column in the southwestern margin of the Peninsula of Baja California. The highestaccumulation of TOC occurred over a wide oxygen minimum zone (OMZ), TOC gradually decreases towards the coastline. The deposition and accumulation of CaCO3 was preferentially higher in the region where the OMZ is narrow and deep. The 2 to 8% of TOC generated in the photic zone is preserved and buried in the sediment, being consistent with values calculated by models of the ocean biological pump. The TOC and CaCO3 accumulation suggest that this region is important and key in the global carbon cycle of the ocean, and contributed significantly in regulating the climate changes in the past.
KW - Biological pump
KW - Calcium carbonate
KW - Northeast Mexican Pacific
KW - Oxygen minimum zone
KW - Total organic carbon
UR - http://www.scopus.com/inward/record.url?scp=84882808422&partnerID=8YFLogxK
M3 - Artículo
SN - 1026-8774
VL - 30
SP - 222
EP - 232
JO - Revista Mexicana de Ciencias Geologicas
JF - Revista Mexicana de Ciencias Geologicas
IS - 1
ER -