Life in extreme conditions: The paradox of Antarctic marine biodiversity

Stefano Ambroso, Janire Salazar, Josep-Maria Gili, Rebeca Zapata Guardiola

Abstract


The study of pristine places is very important for learning about the state of the oceans before the impact of human beings. Due to the extreme environmental conditions of the Antarctic continental shelf – its distance from other continents, depth, and the weight of the continental ice – it offers us a great opportunity to better understand how a pristine ecosystem would normally be. In addition to a high level of biodiversity, Antarctic benthic organisms present patterns of demographic and spatial distribution that are different from the communities of the continental shelves in other seas and oceans of the world. This makes Antarctic benthic communities look, more than one might think, like the communities with the highest known biodiversity in the world.

Keywords


marine biodiversity; conservation; Antarctica; benthos; gorgonia

Full Text: PDF

DOI: https://doi.org/10.7203/metode.9.11324

References


Ambroso, S., Salazar, J., Zapata-Guardiola, R., Federwisch, L., Richter, C., Gili, J-M., & Teixidó, N. (2017). Pristine populations of habitat-forming gorgonian species on the Antarctic continental shelf. Scientific Reports, 7(1), 12251. doi: 10.1038/s41598-017-12427-y

Arntz, W. E., Brey, T., & Gallardo, V. A. (1994). Antarctic zoobenthos. Oceanography and Marine Biology Annual Reviews, 32, 241–304.

Aronson, R. B., & Blake, D. B. (2001). Global climate change and the origin of modern benthic communities in Antarctica. American Zoology, 41(4), 27–39. doi: 10.1093/icb/41.1.27

Clarke, A., Aronson, R. B., Crame, J. A., Gili, J-M., & Blake, D. B. (2004). Evolution and diversity of benthic fauna of the Southern Ocean continental shelf. Antarctic Science, 16(4), 559-568. doi: 10.1017/S0954102004002329

Gili, J. M., Arntz, W. E., Palanques, A., Orejas, C., Clarke, A., Dayton, P., ... López-González, P. J. (2006). A unique archaic epibenthic community of sessile passive suspension feeders in the high Antarctic. Deep Sea Research II, 53(8-10), 1029–1052. doi: 10.1016/j.dsr2.2005.10.021

Gili, J. M., Coma, R., Orejas, C., López-González, P. J., & Zabala, M. (2001). Are Antarctic suspension feeding communities different from those elsewhere in the world? Polar Biology, 24(7), 473–485. doi: 10.1007/s003000100257

Gutt, J. (2000). Some «driving forces» structuring communities of the sublittoral Antarctic macrobenthos. Antarctic Science, 12(3), 297–313. doi: 10.1017/S0954102000000365 

Gutt, J., & Starmans, A. (1998). Structure and biodiversity of megabenthos in the Weddell and Lazarev seas (Antarctica): Ecological role of physical parameters and biological interactions. Polar Biology, 20(4), 229–247. doi: 10.1007/s003000050300

Lange, M., Ackley, S., Wadhams, P., Dieckmann, G., & Eicken, H. (1989). Development of sea ice in the Weddell sea. Annals of Glaciology, 12, 92–96. doi: 10.3189/S0260305500007023

Martinez-Dios, A., Dominguez-Carrió, C., Zapata-Guardiola, R., & Gili, J. M. (2016). New insights on Antarctic gorgonians’ age, growth and their potential as paleorecords. Deep Sea Research Part I: Oceanographic Research Papers, 112, 57–67. doi: 10.1016/j.dsr.2016.03.007

Thomas, D. N., & Dieckmann, G. S. (2002). Antarctic Sea Ice–A habitat for extremophiles. Science, 295, 641–644. doi: 10.1126/science.1063391


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