The same pathway to the Weddell Sea birdlife, after 65 years: Similarities in the species composition, richness and abundances

José Luis Orgeira, Facundo Alvarez, Constanza Sofía Salvó        

10.5817/CPR2021-2-20

As part of a multi-year study of top predators in Antarctica, we conducted a seabird ship-based survey on board Almirante Irizar icebreaker in the Weddell Sea to the Filchner Ice Shelf in the austral summer 2020. We carried out 10-minute counts along 1843 km during 125 hours of observation. We analyzed the species distributions and the relationships with the ice cover. We registered 15 species of which four represented more than 85% of the total abundance: Antarctic petrel Thalassoica antarctica (43.9%), snow petrel Pagodroma nivea (16.3%), Arctic tern Sterna paradisaea (15.2%) and emperor penguin Aptenodytes forsteri (10.1%). Species distribution and its relationship with ice cover were analyzed statistically. The ice cover concentration was estimated by using satellite images. We compared our results with the first ship-based bird survey conducted up to the Filchner Ice Shelf in the austral summer 1955/56 to analyze possible changes in the bird community over time. Out of 13 recorded species in the 1955/56 cruise, 11 were present in this study with similar abundance proportions. In both cruises, the bird community consisted of a group of non-numerous species associated with ice-free waters and another group of very numerous species associated with high concentrations on ice cover. The similarities between the two cruises, spaced 65 years apart, suggest a temporal persistence of the bird community of the central and the southern Weddell Sea that could be explained by the dynamics of the ice cover and the presence of reproductive colonies within the study site. The current environmental warming is alarming in this bird community because more than 85% of all its individuals belong to four species strongly dependent on ice cover.

References:

Ainley, D., Tynan, C. and Stirling, I. (2003): Sea ice: a critical habitat for polar marine mammals and birds. In: D. N. Thomas, G. S. Dieckmann (eds.): Sea ice: An introduction to its physics, chemistry, biology and geology. Blackwell Publishing, Oxford, pp. 240–266.

Alerstam, T., Bäckman, J., Grönroos, J., Olofsson, P. and Strandberg, R. (2019): Hypotheses and tracking results about the longest migration: The case of the arctic tern. Ecology and Evolution, 9 (17): 9511-9531.

Borcard, D., Gillet, F. and Legendre, P. (2018): Canonical Ordination. In: Numerical ecology with R. Use R!. Springer, Cham. https://doi.org/10.1007/978-3-319-71404-2_6

Brook, D., Beck, J.R. (1972): Antarctic petrels, snow petrels and south polar skuas breeding in the Theron Mountains. British Antarctic Survey Bulletin, 27: 131-137.

Cline, D. R., Siniff, D. B. and Erickson, A.W. (1969): Summer birds of the pack ice in the Weddell Sea, Antarctica. The Auk, 86: 701-716. 

Congedo, L. (2020): Semi-automatic classification plugin documentation. doi: 10.13140/RG.2.2. 25480.65286/1

Cook, A. J., Fox, A. J., Vaughan, D. G. and Ferrigno, J. G. (2005): Retreating glacier fronts on the Antarctic peninsula over the past half-century. Science, 308: 541. doi: 10.1126/science. 1104235

Coria, N. R., Montalti, D. (2000): A newly discovered breeding colony of emperor penguins Aptenodytes forsteri. Marine Ornithology, 28: 119-120.

Daae, K., Hattermann, T., Darelius, E., Mueller, R. D., Naughten, K. A., Timmermann, R. and Hellmer, H. H. (2020): Necessary conditions for warm inflow toward the Filchner Ice Shelf, Weddell Sea. Geophysical Research Letters, 47: e2020GL089237. doi: 10.1029/ 2020GL089237

Delaney, C. W., Ruiz, M., Clarke, M. and Srinivasan, P. (2000): Knowledge discovery in databases: Data mining the NMDS. In: Proceedings of the 7^th International Congress on Nursing Informatics: One Step Beyond: The Evolution of Technology & Nursing, pp. 61–65.

Descamps, S., Tarroux, A., Cherel, Y., Delord, K., Godø, O. R., Kato, A., Krafft, B. A., Lorentsen, S.-H., Ropert-Coudert, Y., Skaret, G. and Varpe, Ø. (2016): At-Sea distribution and prey selection of Antarctic petrels and commercial Krill Fisheries. PLoS ONE, 11(8): e0156968. doi: 10.1371/journal.pone.0156968

Ferreyra, G. A., Schloss, I. R. (1993): Campaña Irizar 1988/89 – datos preliminares proyectos frentes oceánicos antárticos (FOCA). Cont. Inst. Ant. Arg. Nº 413. 

Griffiths, A. M. (1983): Factors affecting the distribution of the snow petrel (Pagadroma nivea) and the Antarctic petrel (Thalassoica antarctica). Ardea, 71: 145-150.

Joiris, C. R. (1991): Spring distribution and ecological role of seabirds and marine mammals in the Weddel Sea, Antarctica. Polar Biology, 11: 415-424.

Joiris, C. R. (2017): Seabird hotspots on icebergs in the Amundsen Sea, Antarctica. Polar Biology, 41: 111-114 (2018). doi: 10.1007/s00300-017-2174-4

Joiris, C. R., Humphries, G. R. W. and De Broyer, A. (2013): Seabirds encountered along return transects between South Africa and Antarctica in summer in relation to hydrological features (2013). Polar Biology, 36: 1633-1647. doi: 10.1007/s00300-013-1382-9

Kahru, M., Mitchell, B. G., Gille, S. T., Hewes, C. D. and Holm-Hansen, O. (2007): Eddies enhance biological production in the Weddell-Scotia Confluence of the Southern Ocean. Geophysical Research Letters, 34: L14603. doi: 10.1029/2007GL030430

Moore, K. J., Abbott, M. R. (2002): Surface chlorophyll concentrations in relation to the Antarctic Polar Front: seasonal and spatial patterns from satellite observations. Journal of Marine Systems, 37: 69-86.

Novatti, R. (1960): Observaciones sobre aves oceánicas en el Mar de Weddell durante el verano 1959–60. Contribución del Instituto Antártico Argentino, 53: 1-19.

Novatti, R. (1962): Distribución pelágica de aves en el Mar de Weddell. Contribución del Instituto Antártico Argentino, 67: 1-22.

Olivier, F., van Franeker, J. A., Creuwels, J. C. S. and Woehler, E. J. (2005): Variations of snow petrel breeding success in relation to sea-ice extent: detecting local response to large-scale processes? Polar Biology, 28: 687-699. doi: 10.1007/s00300-005-0734-5

Orgeira, J. L. (1994): Registros del Petrel de Wilson (Oceanites oceanicus) en el Mar de Weddell, Antártida. Contribución del Instituto Antártico Argentino, 436: 1-5.

Orgeira, J.L. (1998): Distribución de aves en el Mar de Weddell, Antártida, verano de 1990. Contribución del Instituto Antártico Argentino, 438: 1-16.

Orgeira, J. L. (2000): Avifauna del Nunatak Bertrab, barrera de hielos  Filchner, Antártida, periodo 1995 –1996. Ornitología Neotropical, 11: 177-182.

Orgeira J. L. (2014): Guía de Campo para la identificación de Aves Antárticas. Dirección Nacional del Antártico – Instituto Antártico Argentino. Ciudad Autónoma de Buenos Aires, pp. 1–102.

Orgeira, J. L., Recabarren, P. (1993): Ornithological observations at Belgrano II Station, Filchner Iceshelf, Antarctica. Marine Ornithology, 21: 74-77.

Parkinson, C. L. (2019): A 40-y record reveals gradual Antarctic Sea ice increases followed by decreases at rates far exceediered a marked decrease over summer 2013/2015–2016/2017. 116(29): 14414-14423.

Plotz, J., Weidel, H. and Bersch, M. (1991): Winter aggregations of marine mammals and birds in the north-eastern Weddell Sea pack ice. Polar Biology, 11: 305-309.

Pehlke, H., Brey, T. and Teschke, K. (2019): Spatial distribution of a flying seabird (Antarctic petrel) and penguins (Adelie penguin, Emperor penguin) in the wider Weddell Sea (Antarctica) with links to ArcGIS map packages, PANGAEA. doi: 10.1594/PANGAEA.899520

Qi, M., Liu, Y., Liu, J., Cheng, X., Feng, Q., Shen, Q. and Yu, Z. (2021): A 14-yr Circum-Antarctic Iceberg calving dataset derived from continuous satellite observations. Earth System Science Data Discussions [preprint], in review. doi: 10.5194/essd-2020-340

Rogers, A. D., Frinault, B. A. V., Barnes, D. K. A., Bindoff, N. L., Downie, R., Ducklow, H. W., Friedlaender, A. S., Hart, T., Hill, S. L., Hofmann, E. E., Linse, K., McMahon, C. R., Murphy, E. J., Pakhomov, E. A., Reygondeau, G., Staniland, I. J., Wolf-Gladrow, D. A. and Wright, R. (2020): Antarctic futures: An assessment of climate-driven changes in ecosystem structure, function, and service provisioning in the Southern Ocean. Annual Review of Marine Science, 12: 87-120. 

Ruhl, H. A, Ellena, J. A, Wilson, R. C. and Helly, J. J. (2011): Seabird aggregation around free-drifting icebergs in the northwest Weddell Sea and Scotia Seas. Deep-Sea Research II, 58: 1497-1506.

Schneppenheim, R. (1981). Results of the biological investigations in the Weddell Sea during a Site Survey 1979/80. Polarforschung, 51(1): 91-99.

Shirihai, H. (2009): A complete guide to Antarctic wildlife. The birds and marine mammals of the Antarctic continent and the Southern Ocean. 2^nd edn. Princeton: Princeton University Press.   544 p.

Smith, K. L. Jr., Robison, B. H., Helly, J. J., Kaufmann, R. S., Ruhl, H. A., Shaw, T. J., Twining, B. S. and Vernet, M. (2007): Free-drifting icebergs: Hot spots of chemical and biological enrichment in the Weddell Sea. Science, 317: 478-482. doi: 10.1126/science.1142834

Tasker, M. L., Jones, P. H., Dixon, T. and Blake, B. F. (1984): Counting seabirds at sea from ships: a review of methods employed and a suggestion for a standardized approach. Auk, 101: 567-577.

ter Steege, H., Pitman, N. C. A., Sabatier, D., et al. (2017): Hyperdominance in the Amazonian tree flora. Science, 342(6156): 1243092. doi: 10.1126/science.1243092

Teschke, K., Brtnik, P., Hain, S., Herata, H., Liebschner, A., Pehlke, H. and Brey, T. (2021): Planning marine protected areas under the CCAMLR regime – The case of the Weddell Sea (Antarctica). Marine Policy, 124: 104370.

Thurston, M. H. (1982): Ornithological observations in the South Atlantic Ocean and Weddell Sea, 1959–64. British Antarctic Survey Bulletin, 55: 77-103.

Turner, J., Phillips, T., Marshall, G. J., Hosking, J. S., Pope, J. O., Bracegirdle, T. J. and Deb, P. (2017): Unprecedented springtime retreat of Antarctic sea ice in 2016. Geophysical Research Letters, 44: 6868-6875. doi: 10.1002/2017GL073656

Turner, J., Guarino, M. V., Arnatt, J., Jena, B., Marshall, G. J., Phillips, T., Cc, B., Clem, K., Wang, Z., Andersson, T., Murphy, E. and Cavanagh, R. (2020): Recent decrease of summer sea ice in the Weddell Sea, Antarctica. Geophysical Research Letters, 47: e2020GL087127. doi: 10.1029/2020GL087127

van Franeker, J. A. (1992): Top predators as indicators for ecosystems events in the confluence zone and marginal ice zone of the Weddell and Scotia seas, Antarctica, November 1988 to January 1989 (EPOS Leg 2). Polar Biology, 12: 93-102.

van Franeker, J. A. (1996): Pelagic distribution and numbers of the Antarctic petrel Thalassoica antarctica in the Weddell Sea during spring. Polar Biology, 16(8): 565-572.

Vélez, L. G. (1995): Wilson´s Storm Petrels Oceanites oceanicus breeding at the Bertrab Nunatak, Filchner Iceshelf, Antarctica. Marine Ornithology, 23: 67.

Watson, G. E. (1975): Birds of the Antarctic and Sub-Antarctic. American Geophysical Union, Washington, D.C., 350 p.

Zazulie, N., Rusticucci, M. and Solomon, S. (2010): Changes in climate high Southern latitudes: A unique daily record at Orcadas spanning 1903-1908. American Meteorological Society, 23: 189-196.

Zink, R. M. (1978): Birds of the Weddell Sea. Antarctic Journal of the United States, 13: 142-145.

Web sources / Other sources

[1] We acknowledge the use of imagery provided by service from NASA’s Global Imagery Browse Service (GIBS), part of NASA’s  Earth Observing System Data and Informatioon System (EOSDIS). https://earthdata.nasa.gov

[2] QGIS Development Team (2020): QGIS Geographic Information System (version 3.10). Open Source Geospatial Foundation Project. http://qgis.osgeo.org

[3] R Core Team (2019): R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. ISBN 3-900051-07- 0. http://www.R-project.org/

[4] R Development Core Team (2020): R: A language and environment for statistical computing.       R Foundation for Statistical Computing, Vienna, Austria. ISBN 3-900051-07-0. http://www. R-project.org/