Abstract:
Evaluated was the seasonal and inter-annual association between habitat variables and distribution pattern of the apron ray (Discopyge tschudii) and its relationship, with the main force on the environmental condition to understand the influence of estuarine and continental shelf processes in the coastal fishes of the Southwestern Atlantic Coastal System (34°-41°S). Two winter and five spring research surveys in the SACS were analyzed and the Perry and Smith methodology applied to determine the seasonal association of depth, temperature and salinity and the abundance of apron ray. The season with the highest inter-annual spatial distribution variation was related to the main external force on environmental conditions (e.g. wind, atmospheric temperature, and Río de la Plata discharge and shelf water intrusion). Apron ray showed persistent habitat selection, with the water temperature (<16°C) and salinity (higher than 31.8) being environmental factors most influencing its spatial distribution. In the spring, the apron ray spatial distribution showed higher inter-annual variation than in winter. The persistence of the spring habitat selection of D. tschudii suggests that its onshore-offshore as well as north-south movements are influenced by water mass movements forced by a combination of local conditions (wind) and regional-scale weather patterns (e.g. strength of the Malvinas Current). This study provides evidence on the importance of considering environmental conditions on the spatial distribution of apron ray and improves the knowledge on interactions between estuarine and shelf water dynamics as determinants of the spatial distribution of a coastal fish species in the Southwest Atlantic Coastal System. © 2011 Blackwell Verlag, Berlin.
Registro:
Documento: |
Artículo
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Título: | Influence of estuarine and continental shelf water advection on the coastal movements of apron ray Discopyge tschudii in the Southwestern Atlantic |
Autor: | Cortés, F.; Jaureguizar, A.J.; Guerrero, A.R.; Dogliotti, A. |
Filiación: | CONICET - Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina INIDEP - Instituto Nacional de Investigación y Desarrollo Pesquero, Paseo Victoria Ocampo No 1, Mar del Plata, Argentina CIC - Comisión de Investigaciones Científicas de la Pcia de Buenos Aires, La Plata, Argentina UNMdP - Universidad Nacional de Mar del Plata, Mar del Plata, Argentina IAFE - Instituto de Astronomía y Física del Espacio, Buenos Aires, Argentina
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Palabras clave: | Discopyge tschudii; Pisces |
Año: | 2011
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Volumen: | 27
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Número: | 5
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Página de inicio: | 1278
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Página de fin: | 1285
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DOI: |
http://dx.doi.org/10.1111/j.1439-0426.2011.01821.x |
Título revista: | Journal of Applied Ichthyology
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Título revista abreviado: | J. Appl. Ichthyol.
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ISSN: | 01758659
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01758659_v27_n5_p1278_Cortes |
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Citas:
---------- APA ----------
Cortés, F., Jaureguizar, A.J., Guerrero, A.R. & Dogliotti, A.
(2011)
. Influence of estuarine and continental shelf water advection on the coastal movements of apron ray Discopyge tschudii in the Southwestern Atlantic. Journal of Applied Ichthyology, 27(5), 1278-1285.
http://dx.doi.org/10.1111/j.1439-0426.2011.01821.x---------- CHICAGO ----------
Cortés, F., Jaureguizar, A.J., Guerrero, A.R., Dogliotti, A.
"Influence of estuarine and continental shelf water advection on the coastal movements of apron ray Discopyge tschudii in the Southwestern Atlantic"
. Journal of Applied Ichthyology 27, no. 5
(2011) : 1278-1285.
http://dx.doi.org/10.1111/j.1439-0426.2011.01821.x---------- MLA ----------
Cortés, F., Jaureguizar, A.J., Guerrero, A.R., Dogliotti, A.
"Influence of estuarine and continental shelf water advection on the coastal movements of apron ray Discopyge tschudii in the Southwestern Atlantic"
. Journal of Applied Ichthyology, vol. 27, no. 5, 2011, pp. 1278-1285.
http://dx.doi.org/10.1111/j.1439-0426.2011.01821.x---------- VANCOUVER ----------
Cortés, F., Jaureguizar, A.J., Guerrero, A.R., Dogliotti, A. Influence of estuarine and continental shelf water advection on the coastal movements of apron ray Discopyge tschudii in the Southwestern Atlantic. J. Appl. Ichthyol. 2011;27(5):1278-1285.
http://dx.doi.org/10.1111/j.1439-0426.2011.01821.x