Epipelagic copepod assemblage in the Gerlache Strait (Antarctica) during the 2015 austral summer
DOI:
https://doi.org/10.25268/bimc.invemar.2019.48.1.754Keywords:
Aetideus armatus, Antarctic Ocean, Antarctic Peninsula, Colombia, Oithona similis, ZooplanktonAbstract
Oblique zooplankton tows were carried out in the Gerlache Strait from 17 to 22 January 2015 as part of the first Colombian oceanographic expedition to the Antarctic continent, to document the composition and structure of the epipelagic copepod assemblage, taking into account variations at a small spatial scale. The epipelagic environment of the Gerlache Strait was divided into two oceanographic regions during sampling: a stratified northern region and a homogeneous southern region. The epipelagic copepod assemblage comprised 17 species belonging to four orders and 13 families. Adult copepods as well as developmental stages ranging from copepodite II (C2) to copepodite V (C5) from eight different species were recorded in the study area. The dominant species by number was Oithona similis, followed by O. frigida, Ctenocalanus citer, Drescheriella glacialis, and Calanoides acutus. There were significant differences between the epipelagic copepod assemblages present in the northern and southern regions of the Gerlache Strait (Anosim, p = 0.01), with a dissimilarity percentage of 52%. Moreover, Aetideus armatus is reported for the first time in the western sector of the Antarctic Peninsula. The oceanographic conditions and the geomorphological characteristics of the study area modulated the surface circulation pattern, as well as the structure and composition of the primary producers during the study period, determining the spatial variation of the abundance and composition of the epipelagic copepod assemblage in the Gerlache Strait during the 2015 Austral summer.References
Atkinson, A., and J. D. Sinclair. 2000. Zonal distribution and seasonal vertical migration of copepod assemblages in the Scotia Sea. Polar Biol., 23(1): 46-58.
Atkinson, A., R. S. Shreeve, E. A. Pakhomov, J. Priddle, S. P. Blight and P. Ward. 1996 Zooplankton response to a phytoplankton bloom near South Georgia, Antarctica. Mar. Ecol. Prog. Ser., 144:195-210.
Atkinson, A., P., Ward., B.P.V. Hunt, E.A. Pakhomov and G.W. Hosie. 2012. An overview of Southern Ocean Zooplankton data: Abundance, biomass, feeding and funtional relationships. CCAMLR Science, 19: 171–218
Ayón, P., E. Pinedo and D. Lopez. 2007. Estructura comunitaria del zooplankton Antártico en el Estrecho de Bransfield y alrededores de la Isla Elefante, verano Austral 2007 ANTAR XVII. Bol. Inst. Del Mar del Perú 31(1):121-127.
Ballerini, T., E. E. Hofmann, D. G. Ainley, K. Daly, M. Marrari, C. A. Ribic, W. O. Smith Jr. and J. H. Steele. 2014. Productivity and linkages of the food web of the southern region of the western Antarctic Peninsula continental shelf. Prog. Oceanogr., 122: 10-29.
Brady S. G. 1918. Australasian Antartic expedition 1911-14. Scientific report series. C. Zoology and Botany., Vol V, Part 3, 48p.
Brinton, E. 1991. Distribution and population structures of immature and adult Euphausia superba in the western Bransfield Strait region during the 1986–87 summer. Deep-Sea Res. Part II. Top. Stud. Oceanogr., 38: 1169–1194.
Calbet, A. and E. Saiz. 2005. The ciliate-copepod link in marine systems. Aquat. Microb. Ecol., 38: 157–167.
Canals, M. and D. Amblas. 2016. Small, deep shelf-basins and their sedimentary infill, western Bransfield Strait, Antarctic Peninsula. Geol. Soc. London Memoir., 46(1): 213-214.
Clarke, K. R. 1993. Non-parametric multivariate analyses of changes in community structure. Aust. J. Ecol., 18: 117-143.
Clarke, K. R. and M. Ainsworth. 1993. A method of linking multivariate community. Mar. Ecol. Prog. Ser., 92: 205-219.
Clarke, K. R. and R. M. Warwick. 1994. Similarity-based testing for community pattern: the two-way layout with no replication. Mar. Biol., 118(1): 167-176.
Eiane, K. and M. D. Ohman. 2004. Stage specific mortality of Calanus finmarchicus, Pseudocalanus elongatus and Oithona similis on Fladen Ground, North Sea, during a spring bloom. Mar. Ecol. Prog. Ser., 268: 183-193.
Giguère, L. A., J. F. St-Pierre, B. Bernier, A. Vezina and J. G. Rondeau. 1989. Can we estimate the true weight of zooplankton samples after chemical preservation?. Can. J. Fish. Aquat. Sci., 46(3): 522-527.
Giron, M. 2004. Zooplancton e ictioplancton antártico durante el verano Austral del 2003. Inf. Inst. del Mar del Perú., 32(4):359-363.
Gleiber, M. R., D. K. Steinberg and O. M. Schofield. 2016. Copepod summer grazing and fecal pellet production along the Western Antarctic Peninsula. J. Plankton Res., 38(3): 732-750.
Gleiber, M. R., D. K. Steinberg and H. W. Ducklow. 2012. Time series of vertical flux of zooplankton fecal pellets on the continental shelf of the western Antarctic Peninsula. Mar. Ecol. Prog. Ser., 471: 23–36.
Gonçalves-Araujo, R., M. S. de Souza, V. M. Tavano, and C. A. E. Garcia. 2015. Influence of oceanographic features on spatial and interannual variability of phytoplankton in the Bransfield Strait, Antarctica. J. Mar. Sys., 142: 1-15.
Hernández-León, S., A. Portillo-Hahnefeld, C. Almeida, P. Bécognée and I. Moreno. 2001. Diel feeding behavior of krill in the Gerlache Strait, Antarctica. Mar. Ecol. Prog. Ser., 223: 235-242.
Hernández-León, S., P. Sangrà, P. Lehette, L. Lubián, C. Almeida, S. Putzeys, P. Becógnée and M. P. Andrade. 2013. Zooplankton biomass and metabolism in the frontal zones of the Bransfield Strait, Antarctica. J. Mar. Sys., 111: 196-207.
Holm-Hansen, O. and B. G. Mitchell. 1991 Spatial and temporal distribution of phytoplankton and primary production in the western Bransfield Strait region. Deep-Sea Res. Part II. Top. Stud. Oceanogr., 38: 961–980.
Holm-Hansen, O. and M. Vernet. 1992. RACER: Distribution, abundance, and productivity of phytoplankton in the Gerlache Strait during austral summer. Antarct. J. US., 27: 154–156.
Hopkins, T. L. 1985. The zooplankton community of Croker passage, Antarctic Peninsula. Polar Biol., 4(3): 161-170.
Huntley, M. E. and E. Brinton. 1991. Mesoscale variation in growth and early development of Euphausia superba Dana in the western Bransfield Strait region. Deep-Sea Res. Part II. Top. Stud. Oceanogr., 38: 1213–1240.
Huntley, M. E. & F. Escritor. 1991. Dynamics of Calanoides acutus (Copepoda: Calanoida) in antarctic coastal waters. Deep-Sea Res. Part II. Top. Stud. Oceanogr., 38: 1145–1167.
Huntley, M. E., D. M. Karl, P. P. Niiler and O. Holm-Hansen. 1991. Research on Antarctic coastal ecosystem rates (RACER): an interdisciplinary field experiment. Deep-Sea Res. Part II. Top. Stud. Oceanogr., 38: 911–941.
Krebs, C. J. 1999. Ecological Methodology. 2nd Ed. Benjamin Cummings. Menlo Park, CA, USA. 624 p.
Lancelot, C., S. Mathot, C. Veth, and H. W. de Baar. 1993. Factors controlling phytoplankton ice-edge blooms in the marginal ice-zone of the Northwestern Weddell Sea during sea ice retreat 1988F Field observations and mathematical model. Polar Biol., 13 (6): 377–387.
Markhaseva, E. L. 1996. Calanoid copepods of the family Aetideidae of the word ocean. Russian Academy of Science, Zoological Institute, St Petersburg. 331p.
Montes-Hugo, M., M. Vernet, D. G. Martinson, R. Smith and R. A. Iannuzzi. 2008. Variability on phytoplankton size structure in the western Antarctic Peninsula (1997–2006). Deep-Sea Res. Part II. Top. Stud. Oceanogr., 55: 2106–2117.
Niller, P. P., A. Amos and J. H. Hu. 1991. Water masses and 200 m relative geostrophic circulation in the western Bransfield Strait region. Deep-Sea Res. Part I Oceanogr. Res. Pap., 38(8): 943-959.
Nishida, S. 1985. Taxonomy and distribution of the family Oithonidae (Copepoda, Cyclopoida) in the Pacific and Indian Oceans. Bull. Ocean Res. Inst. U. Tokyo., 20: 1-167.
Postel, L., H. Fock and W. Hagen. 2000. Biomass and abundance. 83 – 192 pp. In: Harris, R. P., P. H. Weibe, J. Lenz, H. R. Skjoldal and M. Huntley. ICES Zooplankton methodology manual. Academic Press, London, U.K. 684 p.
Razouls, S., C. Razouls and F. De Bovee. 2000. Biodiversity and Biogeography of Antartic copepods. Antarct. Sci., 12(3): 343-362
Razouls C., F. de Bovée, J. Kouwenberg and N. Desreumaux. 2005-2016. Diversity and Geographic Distribution of Marine Planktonic Copepods. Available at http://copepodes.obs-banyuls.fr/en [Accessed October 29, 2016]
Rodriguez, F., M. Varela and M. Zapata. 2002a. Phytoplankton assemblages in the Gerlache and Bransfield Straits (Antarctic Peninsula) determined by light microscopy and CHEMTAX analysis of HPLC pigment data. Deep-Sea Res. Part II. Top. Stud. Oceanogr., 49(4): 723-747.
Rodrı́guez, J., F. Jiménez-Gómez, J. M. Blanco and F. L. Figueroa. 2002b. Physical gradients and spatial variability of the size structure and composition of phytoplankton in the Gerlache Strait (Antarctica). Deep-Sea Res. Part II. Top. Stud. Oceanogr., 49(4), 693-706.
Ross, R. M., E. E. Hofmann and L. B. Quetin. (eds). 1996. Foundations for ecological research west of the Antarctic Peninsula. AGU Antarctic research series, vol. 70. American Geophysical Union, Washington, DC. 448 p.
Ross, R. M., L. B. Quetin, D. G. Martinson, R. A. Iannuzzi, S. E. Stammerjohn and R. C. Smith. 2008. Palmer LTER: patterns of distribution of five dominant zooplankton species in the epipelagic zone west of the Antarctic Peninsula, 1993–2004. Deep-Sea Res. Part II. Top. Stud. Oceanogr., 55: 2086–2105.
Ross, R. M., L. B. Quetin, T. Newberger, C. T. Shaw, J. L. Jones, S. A. Oakes and K. J. Moore. 2014. Trends, cycles, interannual variability for three pelagic species west of the Antarctic Peninsula 1993-2008. Mar. Ecol. Prog. Ser., 515: 11–32.
Sailley, S. F., H. W. Ducklow, H. V. Moeller, W. R. Fraser, O. M. Schofield, D. K. Steinberg, L. M. Garzio, and S. C. Doney. 2013. Carbon fluxes and pelagic ecosystem dynamics near two western Antarctic Peninsula Adélie penguin colonies: an inverse model approach. Mar. Ecol. Prog. Ser., 492: 253-272.
Signori, C. N., Thomas, F., Enrich-Prast, A., Pollery, R. C., & Sievert, S. M. 2014. Microbial diversity and community structure across environmental gradients in Bransfield Strait, Western Antarctic Peninsula. Frontiers in microbiology, 5. 647.
Smith Jr., W. O. and D. M. Nelson. 1986. Importance of the iceedge phytoplankton production in the Southern Ocean. Bio Sci., 36 (4): 251–257.
Smith, R.C., H. M. Diersen and M. Vernet. 1996. Phytoplankton biomass and productivity in the western Antarctic Peninsula region. Foundations for Ecological Research West of the Antarctic Peninsula. Antarctic Research Series 70, 333–356.
Smith Jr., W.O., M. E. M. Baumann, D. L. Wilson, and L. Aletsee. 1987. Phytoplankton biomass and productivity in the marginal ice zone of the Fram Strait during summer 1984. J. Geophys. Res., 92: 6777–6786.
Smithsonian Institution. 2017. Antartic Invertebrates Available at http://naturalhistory.si.edu/iz/ ANTIZ/specimen_detail.cfm?irn=949721[Accessed Febraury 22, 2017]
Stammerjohn, S. E., D. G. Martinson, R. C. Smith, and R. A. Iannuzzi. 2008. Sea ice in the western Antarctic Peninsula region: spatiotemporal variability from ecological and climate change perspectives. Deep-Sea Res. Part II. Top. Stud. Oceanogr., 55: 2041–2058.
Steinberg, D. K., K. E. Ruck, M. R. Gleiber, L. M. Garzio, J. S. Cope, K. S. Bernard, S. E. Stammerjohn, O. E. M. Schofield, L. B. Quetin and R. M. Ross. 2015. Long-term (1993–2013) changes in microzooplankton off the western Antarctic Peninsula. Deep-Sea Res. Part I Oceanogr. Res. Pap., 101: 54–70.
Vaughan, D., G. Marshall, W. Connolley, C. Parkinson, R. Mulvaney, D. Hodgson, J. C. King, C. J. Pudsey and J. Turner. 2003 Recent rapid regional climate warming on the Antarctic Peninsula. Clim. Chang., 60: 243–274
Varela, M., E. Fernandez and P. Serret. 2002. Size-fractionated phytoplankton biomass and primary production in the Gerlache and south Bransfield Straits (Antarctic Peninsula) in Austral summer 1995–1996. Deep-Sea Res. Part II. Top. Stud. Oceanogr., 49(4): 749-768.
Zhou, M., W. Nordhausen, M. E. Huntley. 1994. ADCP measurements of the distribution and abundance of euphausiids near the Antarctic Peninsula in winter. Deep-Sea Res. Part I Oceanogr. Res. Pap., 41: 1425–1445.
Zhou, M., P. P. Niiler and J. H. Hu. 2002. Surface currents in the Bransfield and Gerlache Straits, Antarctica. Deep-Sea Res. I., 49: 267–280.
Zhou, M., P. P. Niiler, Y. Zhu and R. D. Dorland. 2006. The western boundary current in the Bransfield Strait, Antarctica. Deep-Sea Res. Part I Oceanogr. Res. Pap., 53(7), 1244-1252.
