The response of deep-sea benthic communities (meio-and macrofaunal structure) to oxygen minimum layer in bathyal zone
Entry ID:
GLOBEC_046_CHL_010
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Summary
Abstract:
Title: The response of deep-sea benthic communities (meio-and macrofaunal structure) to the oxygen minimum layer in the bathyal zone off Concepcion and monitoring the effects of the the ENSO over the shelf communities Two depth transects were taken, one off Concepcion (120-180m depth) and another of Callao, Peru (305-2000m) to determine the responses of the deep sea benthic communities to the ... Oxygen Minimum layer (OML). Downslope effects of depth, sedimentary organic content and oxygenation were all taken into account to test the hypothesis that deep-sea benthic communities within the OML in the Humboldt current system present lower diversity and biomass as compared to communities subject to higher oxygen levels. The effects of the 1997-1998 El Nino and the ENSO cycle were also investigated.
Geographic Coverage
(Click for Interactive Map)
Spatial coordinates
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N: -15.72
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S: -56.79
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E: -64.9
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W: -77.16
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Parent DIF
This data set description is a member of a collection. The
collection is described in
GLOBEC_023_CHL_001
Personnel
Role:
DIF AUTHOR
Phone:
+44 (0)1752 633401
Fax:
+44 (0)1752 633101
Email:
globec at pml.ac.uk
Contact Address:
GLOBEC International Project Office
Plymouth Marine Laboratory
Prospect Place
City:
Plymouth
Postal Code:
PL1 3DH
Country:
UK
Role:
INVESTIGATOR
Email:
rescribano at uantof.cl
Contact Address:
University of Antofagasta
PO Box 170
City:
Antofagasta
Country:
Chile
Publications/References
Published and In press Farmas, L. A. 1998. Potential role of bacterial mats in the nitrogen budget of marine sediments: the case of Thioploca spp. Mar. Ecol. Prog. Ser. 170:291-292. Gutiirrez D, V. A. Gallardo, S. Mayor, C. Neira, C. Vasquez, J. Sellanes, M. Rivas, A. Soto, F. Carrasco, M. Baltasar, 2000. Effects of dissolved oxygen and fresh organic matter on the bioturbation ... potential of macrofauna in sublittoral sediments off central Chile during the 1997/1998 El Nino. Mar. Ecol. Prog. Ser. , 202:81-99 Jorgensen, B.B. & V. A. Gallardo, 1999. Thioploca spp.: filamentous sulfur bacteria with nitrate vacuoles. FEMS Microbiol. Ecol. 28: 301-313. Otte, S., J. Gijs Kuenen, L. P. Nielsen, H. W. Paerl, J. Zopfi, H. N. Schulz, A. Teske, B. Strotmann, V. A. Gallardo, & B. B. Jorgensen, 1999. Nitrogen, carbon and sulphur metabolism in natural Thioploca samples. Appl. Environ. Microb. 65(7):3148-3157. Schulz, H., B. Strotmann, V. A. Gallardo & B. B. Jorgensen, 2000. Population study of the filamentous sulfur bacteria Thioploca spp. off the Bay of Concepcisn, Chile. Mar. Ecol. Prog. Ser., 200:117-126. Submitted Farmas, L. & O. Ulloa. Temporal variability of benthic nitrogen fluxes in the sediments of the Chilean continental shelf (36:S). Mar. Ecol. Prog. Ser. Gallardo, V. A., H. Schulz, D. Figueroa, D. Gutiirrez & J. Sellanes. ENSO-related biomass variability of giant vacuolated sulfur bacteria in sediments of the Humboldt Current Ecosystem. Science. Levin, L., A. Rathburn, D. Gutiirrez, P. Muqoz & A. Shankle. Bioturbation in near-anoxic sediments: implications for biofacies models and paleo-oxygen assessments. Geology (In revision). Neira, C., J. Sellanes, L. A. Levin, V. A Gallardo & W. Arntz. Meiofaunal distributions on the Peru margin: relationship to oxygen and organic matter availability. Deep Sea Res. In preparation Carrasco, F. D., V. A. Gallardo, D. Gutiirrez & M. Baltazar. Large temporal changes in the shelf soft bottom macroinfauna off Concepcisn Bay, central Chile. Gallardo, V. A. , M. Palma, F. D. Carrasco, D. Gutiirrez, L. A. Levin. Deep-sea benthic communities associated to the oxygen minimum layer off central Chile. Deep Sea Res. Gutiirrez, D., V. A. Gallardo, F. D. Carrasco, J. Sellanes, C. Neira & E. Quiroga. .Effect of the 1997-98 El Nino on the benthic subsystem off Central Chile:changes in sediment properties, community structure of macro- and meiobiotas, and bioturbation. J. Mar. Res. Levin, L.A., D. Gutiirrez, A. Rathburn, C. Neira, J. Sellanes, P. Muqoz, V. A. Gallardo, M. Salamanca & J. Shuffert. Oxygen minimum zone influence on benthos of the Perz margin. A survey at 120S during the 1997-98 El Nino. Progr. Ocean. Neira C., J. Sellanes, A. Soto, D. Gutiirrez & V. A. Gallardo (a). Meiofauna and sedimentary organic matter composition off central Chile: response to changes caused by the 1997-98 El Nino. Oceanol. Acta. Neira, C., N. L. Arroyo, G. Gad & W. Decraemer (b). Glochinema bathyperuvensis sp. n. (Nematoda Epsilonematidae): a new species from Peruvian bathyal sediments, SE Pacific Ocean. Ophelia
Creation and Review Dates
DIF Creation Date:
2001-10-15
Last DIF Revision Date:
2007-09-19
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