Artículo

Sahade, R.; Lagger, C.; Torre, L.; Momo, F.; Monien, P.; Schloss, I.; Barnes, D.K.A.; Servetto, N.; Tarantelli, S.; Tatián, M.; Zamboni, N.; Abele, D. "Climate change and glacier retreat drive shifts in an Antarctic benthic ecosystem" (2015) Science Advances. 1(10)
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Abstract:

The Antarctic Peninsula (AP) is one of the three places on Earth that registered the most intense warming in the last 50 years, almost five times the global mean. This warming has strongly affected the cryosphere, causing the largest ice-shelf collapses ever observed and the retreat of 87% of glaciers. Ecosystem responses, although increasingly predicted, have been mainly reported for pelagic systems. However, and despite most Antarctic species being benthic, responses in the Antarctic benthos have been detected in only a few species, and major effects at assemblage level are unknown. This is probably due to the scarcity of baselines against which to assess change. We performed repeat surveys of coastal benthos in 1994, 1998, and 2010, analyzing community structure and environmental variables at King George Island, Antarctica. We report a marked shift in an Antarctic benthic community that can be linked to ongoing climate change. However, rather than temperature as the primary factor, we highlight the resulting increased sediment runoff, triggered by glacier retreat, as the potential causal factor. The sudden shift from a "filter feeders-ascidian domination" to a "mixed assemblage" suggests that thresholds (for example, of tolerable sedimentation) and alternative equilibrium states, depending on the reversibility of the changes, could be possible traits of this ecosystem. Sedimentation processes will be increasing under the current scenario of glacier retreat, and attention needs to be paid to its effects along the AP. © 2015 The Authors.

Registro:

Documento: Artículo
Título:Climate change and glacier retreat drive shifts in an Antarctic benthic ecosystem
Autor:Sahade, R.; Lagger, C.; Torre, L.; Momo, F.; Monien, P.; Schloss, I.; Barnes, D.K.A.; Servetto, N.; Tarantelli, S.; Tatián, M.; Zamboni, N.; Abele, D.
Filiación:Inst. de Diversidad y Ecologia Animal Consejo Nacional de Investigaciones Cientificas y Tecnicas, Universidad Nacional de Córdoba (CONICET-UNC), Facultad de Ciencias Exactas, Físicas y Naturales, UNC, Avenida Vélez Sarsfield 299, Córdoba, Argentina
Instituto de Ciencias, Universidad Nacional de General Sarmiento, Juan M. Gutiérrez 1150, Los Polvorines, Argentina
Instituto de Ecología y Desarrollo Sustentable, Universidad Nacional de Luján, Luján, Argentina
Institute for Chemistry and Biology of the Marine Environment, Carl-von-Ossietzky Straße 9-11, Oldenburg, Germany
Department of Geosciences, University of Bremen, Klagenfurter Straße (GEO), Bremen, Germany
Instituto Antártico Argentino, Balcarce 290, Ciudad Autónoma de Buenos Aires, Argentina
British Antarctic Survey, Natural Environment Research Council, Madingley Road, Cambridge, United Kingdom
Alfred Wegener Institut for Polar and Marine Research, Columbusstraße, Bremerhaven, Germany
Palabras clave:Ecology; Ecosystems; Antarctic benthos; Antarctic Peninsula; Benthic communities; Benthic ecosystems; Community structures; Ecosystem response; Environmental variables; Sedimentation process; Climate change
Año:2015
Volumen:1
Número:10
DOI: http://dx.doi.org/10.1126/sciadv.1500050
Título revista:Science Advances
Título revista abreviado:Sci. Adv.
ISSN:23752548
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_23752548_v1_n10_p_Sahade

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Citas:

---------- APA ----------
Sahade, R., Lagger, C., Torre, L., Momo, F., Monien, P., Schloss, I., Barnes, D.K.A.,..., Abele, D. (2015) . Climate change and glacier retreat drive shifts in an Antarctic benthic ecosystem. Science Advances, 1(10).
http://dx.doi.org/10.1126/sciadv.1500050
---------- CHICAGO ----------
Sahade, R., Lagger, C., Torre, L., Momo, F., Monien, P., Schloss, I., et al. "Climate change and glacier retreat drive shifts in an Antarctic benthic ecosystem" . Science Advances 1, no. 10 (2015).
http://dx.doi.org/10.1126/sciadv.1500050
---------- MLA ----------
Sahade, R., Lagger, C., Torre, L., Momo, F., Monien, P., Schloss, I., et al. "Climate change and glacier retreat drive shifts in an Antarctic benthic ecosystem" . Science Advances, vol. 1, no. 10, 2015.
http://dx.doi.org/10.1126/sciadv.1500050
---------- VANCOUVER ----------
Sahade, R., Lagger, C., Torre, L., Momo, F., Monien, P., Schloss, I., et al. Climate change and glacier retreat drive shifts in an Antarctic benthic ecosystem. Sci. Adv. 2015;1(10).
http://dx.doi.org/10.1126/sciadv.1500050