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First quantitative exploration of benthic megafaunal assemblages on the mid-oceanic ridge system of the Carlsberg Ridge, Indian Ocean

Published online by Cambridge University Press:  11 April 2016

Sabyasachi Sautya ,
Baban Ingole ,
Daniel O. B. Jones ,
Durbar Ray  and
K. A. Kameshraju
Sabyasachi Sautya*
Affiliation:
CSIR-National Institute of Oceanography, Regional Centre, Mumbai 400053, India
Baban Ingole
Affiliation:
CSIR-National Institute of Oceanography, Dona Paula, Goa 403004, India
Daniel O. B. Jones
Affiliation:
National Oceanography Centre, University of Southampton Waterfront Campus, European Way, Southampton SO14 3ZH, UK
Durbar Ray
Affiliation:
CSIR-National Institute of Oceanography, Dona Paula, Goa 403004, India
K. A. Kameshraju
Affiliation:
CSIR-National Institute of Oceanography, Dona Paula, Goa 403004, India
*
Correspondence should be addressed to:S. Sautya, CSIR-National Institute of Oceanography, Regional Centre, Mumbai 400053, India email: [email protected]
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Abstract

There are few quantitative studies on deep-sea biodiversity from the Indian Ocean, particularly on the mid-ocean ridges (MOR). We investigated the benthic megafaunal community structure of the Indian Ocean MOR at the Carlsberg Ridge (CR) using underwater video observation by the Television Gripper (TVG) and Ocean Floor Observation System (OFOS) during a multidisciplinary scientific cruise in 2007. Our aim was to observe megafaunal assemblages and their variation with bottom substrate at different geological settings in the CR region. The fauna was identified at best possible taxonomic resolution from video images and data were quantified by photogrammetry. Variation of substratum type was greatest in the deeper areas of the CR region, with substrata varying from fine sediments to basalts. A total of eight substratum types and 90 megafaunal taxa, representing seven phyla, have been classified throughout the 10 transects. Faunal abundances ranged between 171.3 to 5.7 animals 1000 m−2, with higher abundances at the shallower transects, in off-axial highs, and lower at deeper zones, on the rift valley wall and floor. Cnidarians were dominant at off-axial highs while echinoderms prevailed at rift valley floor transects. Other frequently encountered faunal components were poriferans and chordates, observed at shallower as well as deeper transects. This is the first detailed investigation of megafaunal assemblages from the Indian Ocean MOR.

Keywords

benthic megafaunahabitat heterogeneitydeep-seamid-oceanic ridgesCarlsberg RidgeIndian Ocean
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 97 , Issue 2 , March 2017 , pp. 409 - 417
Copyright
Copyright © Marine Biological Association of the United Kingdom 2016 

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References

REFERENCES

Alt, C.H.S., Rogacheva, A., Boorman, B., Hughes, J.A., Billett, D.S.M., Gooday, A.J. and Jones, D.O.B. (2013) Trawled megafaunal invertebrate assemblages from bathyal depth of the Mid-Atlantic Ridge (48°–54°N). Deep-Sea Research II 98, 326–340.Google Scholar
Bell, J.B., Alt, C.H.S. and Jones, D.O.B. (2016) Benthic megafauna on steep slopes at the northern Mid-Atlantic Ridge. Marine Ecology (Accepted).Google Scholar
Bell, J.B., Jones, D.O.B. and Alt, C.H.S. (2013) Lebensspuren of the Bathyal Mid-Atlantic Ridge. Deep-Sea Research II 98, 341–351.Google Scholar
Bergstad, O.A., Falkenhaug, T., Astthorsson, O.S., Byrkjedal, I., Gebruk, A.V., Piatkowski, U., Priede, I.G., Santos, R.S., Vecchione, M., Lorance, P. and Gordon, J.D.M. (2008) Towards improved understanding of the diversity and abundance patterns of the mid-ocean ridge macro- and megafauna. Deep-Sea Research II 55, 1–5.Google Scholar
Bergstad, O.A. and Godø, O.R. (2003) The pilot project “Patterns and process of the ecosystems of northern Mid-Atlantic”: aims, strategy and status. Oceanologica Acta 25, 219–226.Google Scholar
Carney, R.S. (2005) Zonation of deep biota on continental margins. Oceanography and Marine Biology – an Annual Review 43, 211–278.Google Scholar
Clark, M.R., Rowden, A.A., Schlacher, T., Williams, A., Consalvey, M., Stocks, K.I., Rogers, A.D., O'Hara, T.D., White, M., Shank, T.M. and Hall-Spencer, J.M. (2010) The ecology of seamounts: structure, function and human impacts. Annual Review of Marine Science 2, 253–278.Google Scholar
Clarke, K.R. and Gorley, R.N. (2006) Primer. Plymouth: PRIMER-E.Google Scholar
Durden, J.M., Bett, B.J., Jones, D.O.B., Huvenne, V.A.I. and Ruhl, H.A. (2015) Abyssal hills – hidden source of increased habitat heterogeneity, benthic megafaunal biomass and diversity in the deep sea. Progress in Oceanography 137, 209–218.Google Scholar
Felley, J.D., Vecchione, M. and Wilson, R.R. Jr (2008) Small-scale distribution of deep-sea demersal nekton and other megafauna in the Charlie-Gibbs Fracture Zone of the Mid-Atlantic Ridge. Deep-Sea Research II 55, 153–160.Google Scholar
Fowler, C.M.R. and Tunnicliffe, V. (1997) Hydrothermal vent communities and plate tectonics. Endeavour 21, 164–168.Google Scholar
Gamo, T., Chiba, H., Yamanaka, T., Okudaira, T., Hashimoto, J., Tsuchida, S., Ishibashi, J., Kataoka, S., Tsunogai, U., Okamura, K., Sano, Y. and Shinjo, R. (2001) Chemical characteristics of newly discovered black smoker fluids and associated hydrothermal plumes at the Rodriguez Triple Junction, Central Indian Ridge. Earth and Planetary Science Letters 193, 371–379.Google Scholar
Garrison, T. (1993) Oceanography: an invitation to marine science. Belmont, CA: Wadsworth, 608 pp.Google Scholar
Glasby, G.P. (1971) Distribution of manganese nodules and Lebensspuren in underwater photographs from the Carlsberg Ridge, Indian Ocean. New Zealand Journal of Geology and Geophysics 16, 1–17.Google Scholar
Gray, J.S. (1974) Animal– sediment relationships. Oceanography and Marine Biology – an Annual Review 12, 263–300.Google Scholar
Hashimoto, J., Ohta, S., Gamo, T., Chiba, H., Yamaguchi, T., Tsuchida, S., Okudaira, S., Watabe, H., Yamanaka, T. and Kitazawa, M. (2001) First hydrothermal vent communities from the Indian Ocean discovered. Zoological Science 18, 717–721.Google Scholar
Hoff, G.R. and Stevens, B. (2005) Faunal assemblage structure on the Patton seamount (Gulf of Alaska, USA). Alaska Fisheries Research Bulletin 11, 27–36.Google Scholar
Hogg, M.M., Tendal, O.S., Conway, K.W., Pomponi, S.A., van Soest, R.W.M., Gutt, J., Krautter, M. and Roberts, J.M. (2010) Deep-sea sponge grounds: reservoirs of biodiversity. UNEP-WCMC Biodiversity Series No. 32. Cambridge: UNEP-WCMC.Google Scholar
Jones, D.O.B. and Brewer, M.E. (2012) Response of megabenthic assemblages to different scales of habitat heterogeneity on the Mauritanian slope. Deep Sea Research Part I: Oceanographic Research Papers 67, 98–110.CrossRefGoogle Scholar
Jones, D.O.B., Mrabure, C.O. and Gates, A.R. (2013) Changes in deep-water epibenthic megafaunal assemblages in relation to seabed slope on the Nigerian margin. Deep Sea Research Part I: Oceanographic Research Papers 78, 49–57.Google Scholar
KameshRaju, K.A., Chaubey, A.K., Amarnath, D. and Mudholkar, A.V. (2008) Morphotectonics of the Carlsberg Ridge between 62°20′and 66°20′E, northwest Indian Ocean. Marine Geology 252, 120–128.Google Scholar
Laughton, A.S. (1967) Underwater photography of the Carlsberg Ridge. In Hersey, J.B. (ed.) Deep-sea photography. Baltimore, MD: The Johns Hopkins Press, pp. 191–206.Google Scholar
Lutz, M.J., Caldeira, K., Dunbar, R.B. and Behrenfeld, M.J. (2007) Seasonal rhythms of net primary production and particulate organic carbon flux to depth describe the efficiency of biological pump in the global ocean. Journal of Geophysical Research: Oceans 112:C10011. doi: 10.1029/2006JC003706.Google Scholar
McIntyre, A.D. (2010) Life in the world's oceans: diversity, distribution and abundance. Oxford: Blackwell Publishing.Google Scholar
McKenzie, D.P., Molna, P. and Davie, D. (1970) Plate tectonics of the Red Sea and East Africa. Nature 226, 243–248.Google Scholar
Molodtsova, T.N. (2013) Deep-sea mushroom soft corals (Octocorallia: Alcyonacea: Alcyoniidae) of the Northern Mid-Atlantic Ridge. Marine Biology Research 9, 488–515.Google Scholar
Murton, J.B., Baker, E.T., Sands, C.M. and German, C.R. (2003) Detection of an unusual large hydrothermal event plume above the slow spreading Carlsberg Ridge, NW Indian Ocean. Geophysical Research Letters 33, 1–5.Google Scholar
O'Hara, T. (2008) Bioregionalisation of the waters around Lord Howe and Norfolk Islands using brittle stars (Echinodermata: Ophiuroidea) . Department of the Environment, Water, Heritage and the Arts, Australia, 54 pp.Google Scholar
Priede, I.G., Bergstad, O.A., Miller, P.I., Vecchione, M., Gebruk, A., Falkenhaug, T., Billett, D.S.M., Craig, J., Dale, A.C., Shields, M.A., Tilstone, G.H., Sutton, T.T., Gooday, A.J., Inall, M.E., Jones, D.O.B., Martinez-Vicente, V., Menezes, G.M., Niedzielski, T., Sigurðsson, O., Rothe, N., Rogacheva, A., Alt, C.H.S., Brand, T., Abell, R., Brierley, A.S., Cousins, N.J., Crockard, D., Hoelzel, A.R., Høines, Å., Letessier, T.B., Read, J.F., Shimmield, T., Cox, M.J., Galbraith, J.K., Gordon, J.D.M., Horton, T., Neat, F. and Lorance, P. (2013) Does presence of a mid-ocean ridge enhance biomass and biodiversity? PLoS ONE 8, e61550.Google Scholar
Ray, D., KameshRaju, K.A., Baker, E.T., Rao, A.S., Mudholkar, A.V., Lupton, J.E., Prakash, L.S., Gawas, R.B. and Kumar, T.V. (2012) Hydrothermal plumes over the Carlsberg Ridge, Indian Ocean. Geochemistry Geophysics Geosystems 13, Q01009.Google Scholar
Ray, D., Mirza, I.H., Prakash, L.S., Kaisary, S., Sarma, Y.V.B., Rao, B.R., Somayajulu, Y.K., Drolia, R.K. and KameshRaju, K.A. (2008) Water-column geochemical anomalies associated with the remnants of a mega plume: a case study after CR-2003 hydrothermal event in Carlsberg Ridge, NW Indian Ocean. Current Science 95, 355–360.Google Scholar
Rice, A.L., Thurston, M.H. and New, A.L. (1990) Dense aggregations of a hexactinellid sponge, Pheronema carpenteri, in the Porcupine Seabight (northeast Atlantic Ocean), and possible causes. Progress in Oceanography 24, 179–196.Google Scholar
Römer, M., Kopiske, E., Linse, K., Marcon, Y., Little, C. and Wu, T. (2013) Ocean Floor Observation System (OFOS). Berichte zur Polar- und Meeresforschung 668, 46–79.Google Scholar
Rowe, G.T., Keller, G., Edgerton, H., Staresinic, N. and MacIlvaine, J. (1974) Time-lapse photography of the biological reworking of sediment in the Hudson Canyon. Journal of Sedimentary Petrology 44, 549–552.Google Scholar
Van Dover, C.L. (2000) The ecology of deep-sea hydrothermal vents. Princeton, NJ: Princeton University Press, 352 pp.Google Scholar
Van Dover, C.L., Humphris, S.E., Fornari, D., Cavanaugh, C.M., Collier, R., Goffredi, S.K., Hashimoto, J., Lilley, M.D., Reysenbach, A.L., Shank, T.M., Von Damm, K.L., Banta, A., Gallant, R.M., Götz, D., Green, D., Hall, J., Harmer, T.L., Hurtado, L.A., Johnson, P., McKiness, Z.P., Meredith, C., Olson, E., Pan, I.L., Turnipseed, M., Won, Y., Young, C.R. III and Vrijenhoek, R.C. (2001) Biogeography and ecological setting of Indian Ocean hydrothermal vents. Science 294, 818–823.Google Scholar
Vecchione, M., Bergstad, O.A., Byrkjedal, I., Falkenhaug, T., Gebruk, A.V., Godø, O.R., Gislason, A., Heino, M., Høines, Å.S., Menezes, G.M.M., Piatkowski, U., Priede, I.G., Skov, H., Søiland, H., Sutton, T. and Wenneck, T.L. (2010) Biodiversity patterns and process on the mid-Atlantic ridge. In McIntyre, A. (ed.) Life in the world's oceans: diversity, distribution and abundance. Oxford: Blackwell Publishing, pp. 103–121.Google Scholar
Williams, A., Althaus, F., Dunstan, P.K., Poore, G.C.B., Bax, N.J., Kloser, R.J. and McEnnulty, F.J. (2010) Scales of habitat heterogeneity and megabenthos biodiversity on an extensive Australian continental margin (100-1,100 m depths). Marine Ecology 31, 222–236.Google Scholar
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