Western Antarctic Peninsula is one of the fastest warming areas on Earth and coastal areas of the region are foremost affected. Here we present the state of coastal plankton assemblages of the Galindez Island and Neumayer Channel, Western Antarctic Peninsula in austral autumn (April 2016). Surface water temperatures were ranged between −0.12 °C and −0.97 °C and average chlorophyll-a concentrations were 0.65 µg/l. A total of 50 phytoplankton and 24 zooplankton taxa (15 copepods and 9 meroplanktonic species) were identified during the sampling period. Diatom species (78%) predominated phytoplankton and the highest abundance was 820 cells l-1, while the highest number of phytoplankton species was 42. Zooplankton was prevailed by the dominance of copepods, except contribution of meroplankton at the Neumayer channel. Highest zooplankton abundance was 101 ind.m-3. The sampling season was the transition period from the productive spring-summer to dormant winter conditions, which explains the low abundances registered, however, on contrary to low cell abundances, diversity was high within plankton.
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Arrigo, K.R. (2003). Phytoplankton dynamics within 37 Antarctic coastal polynya systems. Journal of Geophysical Research, 108(C8). http://dx.doi.org/ 10.1029/2002jc001739
Boyd, P.W., Lennartz, S.T., Glover, D.M., & Doney, S.C. (2015). Biological ramifications of climate-change-mediated oceanic multi-stressors. Nature Clim. Change, 5(1), 71-79. http://dx.doi.org/ 10.1038/nclimate2441
Calbet, A., & Irigoien, X. (1997). Egg and faecal pellet production rates of the marine copepod Metridia gerlachei northwest of the Antarctic Peninsula. Polar Biology, 18(4), 273-279. http://dx.doi.org/ 10.1007/s003000050188
Chavez, F.P., Messie, M., & Pennington, J.T. (2011). Marine primary production in relation to climate variability and change. Ann Rev Mar Sci, 3, 227-260. http://dx.doi.org/10.1146/annurev.marine.010908.163 917
Detoni, A.M.S., de Souza, M.S., Garcia, C.A.E., Tavano, V.M., & Mata, M.M. (2015). Environmental conditions during phytoplankton blooms in the vicinity of James Ross Island, east of the Antarctic Peninsula. Polar Biology, 38(8), 1111-1127. http://dx.doi.org/10.1007/s00300-015-1670-7
Doney, S.C., Ruckelshaus, M., Duffy, J.E., Barry, J.P.,Chan, F., English, C.A., & Talley, L.D. (2012). Climate change impacts on marine ecosystems. AnnRev Mar Sci, 4, 11-37. http://dx.doi.org/10.1146/annurev-marine-041911-111611
Gallienne, C.P., & Robins, D.B. (2001). Is Oithona the most important copepod in the wold's oceans? . Journal of Plankton Research, 23(12), 1421-1432. https://doi.org/10.1093/plankt/23.12.1421
Hays, G.C., Richardson, A.J., & Robinson, C. (2005). Climate change and marine plankton. Trends in Ecology & Evolution, 20(6), 337-344. https://doi.org/10.1016/j.tree.2005.03.004
Huntley, M.E., & Escritor, F. (1992). Ecology of Metridia gerlachei Giesbrecht in the western Bransfield Strait, Antarctica. Deep Sea Research Part A. Oceanographic Research Papers, 39(6), 1027-1055. http://dx.doi.org/ 10.1016/0198-0149(92)90038-U
IPCC. (2013). Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge: Cambridhe University Press.
Lee, S.H., Joo, H.M., Joo, H., Kim, B.K., Song, H.J., Jeon, M., & Kang, S.-H. (2014). Large contribution of small phytoplankton at Marian Cove, King George Island, Antarctica, based on long-term monitoring from 1996 to 2008. Polar Biology, 38(2), 207-220. http://dx.doi.org/ 10.1007/s00300-014-1579-6
Longhurst, A.R. (1991). Role of the marine biosphere in the global carbon cycle. Limnology and Oceanography, 36(8), 1507-1526.https://doi.org/10.4319/lo.1991.36.8.1507
McClintock, J., Ducklow, H., & Fraser, W. (2008). Ecological responses to climate change on the Antarctic Peninsula. American Scientist, 96, 302-310.
Nishibe, Y., Kobari, T., & Ota, T. (2010). Feeding by the cyclopoid copepod Oithona similis on the microplankton assemblage in the Oyashio region during spring. Plankton & Benthos Research, 5(2), 74-78. https://doi.org/10.3800/pbr.5.74
Olguín, H.F., & Alder, V.A. (2011). Species composition and biogeography of diatoms in antarctic and subantarctic (Argentine shelf) waters (37–76°S). Deep Sea Research Part II: Topical Studies in Oceanography, 58(1-2), 139-152. http://dx.doi.org/ 10.1016/j.dsr2.2010.09.031
Öztürk, B. (2015). Neden Antarktika? Istanbul: E Yayinlari. Öztürk, B., Fach, B.A., Çiçek, B.Ö., Hüsrevoğlu, S., Salihoğlu, B., Ergül, H.A., & Öztürk, A.A. (2014). Towards the Turkish Antarctic Science Programme. Journal of the Black Sea/Mediterranean Environment, 20(1), 92-95.
Padfield, D., Yvon-Durocher, G., Buckling, A., Jennings, S., & Yvon-Durocher, G. (2015). Rapid evolution of metabolic traits explains thermal adaptation in phytoplankton. Ecol Lett. http://dx.doi.org/ 10.1111/ele.12545
Pakhomov, E.A., Froneman, P.W., & Perissinotto, R.(2002). Salp/krill interactions in the Southern Ocean: spatial segregation and implications for the carbon flux. Deep Sea Research Part II: Topical Studies in Oceanography, 49(9–10), 1881-1907. http://dx.doi.org/ 10.1016/S0967-0645(02)00017-6