TY - JOUR
T1 - Natural and Anthropogenic Oil Impacts on Benthic Foraminifera in the Southern Gulf of Mexico
AU - Machain-Castillo, M. L.
AU - Ruiz-Fernández, A. C.
AU - Gracia, Adolfo
AU - Sanchez-Cabeza, J. A.
AU - Rodríguez-Ramírez, A.
AU - Alexander-Valdés, H. M.
AU - Pérez-Bernal, L. H.
AU - Nava-Fernández, X. A.
AU - Gómez-Lizárraga, L. E.
AU - Almaraz-Ruiz, L.
AU - Schwing, Patrick
AU - Hollander, David
PY - 2019/8/1
Y1 - 2019/8/1
N2 - The Campeche Sound is the major offshore oil producing area in the Southern Gulf of Mexico (SGoM). To evaluate the impact of oil related activities in the ocean floor sediments, we analyzed the geochemical (major and trace element, organic carbon and hydrocarbon concentrations) and biological (benthic foraminifera) composition of 62 superficial sediment samples, from 13 to 1336 m water depth. Cluster and Factor analysis of all the variables indicate that their distribution patterns are mainly controlled by differences between the terrigenous and carbonate platforms in the SGoM. Benthic foraminiferal assemblages were abundant and diverse, and their distribution patterns are mainly determined by water depth and sedimentary environment. However, most of the abundant species are opportunistic and/or low-oxygen tolerant, and many of their tests show oil stains and infillings, characteristic of oil polluted locations, suggesting the environment has been modified by natural seepage or oil-related activities. To determine if these conditions are natural or anthropogenic in origin, pre - industrial settings should be studied. Organic carbon (Corg) content (0.6-2.9%) and total hydrocarbon concentrations (PAHs 1.0-29.5 μg kg
AB - The Campeche Sound is the major offshore oil producing area in the Southern Gulf of Mexico (SGoM). To evaluate the impact of oil related activities in the ocean floor sediments, we analyzed the geochemical (major and trace element, organic carbon and hydrocarbon concentrations) and biological (benthic foraminifera) composition of 62 superficial sediment samples, from 13 to 1336 m water depth. Cluster and Factor analysis of all the variables indicate that their distribution patterns are mainly controlled by differences between the terrigenous and carbonate platforms in the SGoM. Benthic foraminiferal assemblages were abundant and diverse, and their distribution patterns are mainly determined by water depth and sedimentary environment. However, most of the abundant species are opportunistic and/or low-oxygen tolerant, and many of their tests show oil stains and infillings, characteristic of oil polluted locations, suggesting the environment has been modified by natural seepage or oil-related activities. To determine if these conditions are natural or anthropogenic in origin, pre - industrial settings should be studied. Organic carbon (Corg) content (0.6-2.9%) and total hydrocarbon concentrations (PAHs 1.0-29.5 μg kg
KW - Benthic foraminifera
KW - Marine sediments
KW - Trace metal contamination
KW - Natural seeps
KW - Petroleum hydrocarbons in sediments
KW - Oil industry contamination
UR - https://digitalcommons.usf.edu/msc_facpub/437
U2 - 10.1016/j.marenvres.2019.06.006
DO - 10.1016/j.marenvres.2019.06.006
M3 - Article
VL - 149
JO - Marine Environmental Research
JF - Marine Environmental Research
ER -