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dc.contributor.author
Elisio, Mariano
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dc.contributor.author
Maenza, Reinaldo Agustín
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dc.contributor.author
Luz Clara Tejedor, Moira
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dc.contributor.author
Baldoni, Ana Graciela
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dc.date.available
2021-02-22T19:31:26Z
dc.date.issued
2020-12
dc.identifier.citation
Elisio, Mariano; Maenza, Reinaldo Agustín; Luz Clara Tejedor, Moira; Baldoni, Ana Graciela; Modeling the bottom temperature variation patterns on a coastal marine ecosystem of the Southwestern Atlantic Ocean (El Rincón), with special emphasis on thermal changes affecting fish populations; Elsevier Science; Journal Of Marine Systems; 212; 12-2020; 11 p.
dc.identifier.issn
0924-7963
dc.identifier.uri
http://hdl.handle.net/11336/126268
dc.description.abstract
The detailed knowledge of temperature variation patterns in marine ecosystems is important to understand marine communities? dynamics. The present study modeled the historical (1980-2016) daily bottom temperatures on a shallow marine ecosystem of the Southwestern Atlantic Ocean (El Rincón), which is a reproductive ground for several commercially important fish. A detailed description of bottom temperature variation patterns was performed mainly focusing on those changes influencing fish populations. The model used in the present study is a modification from previous models applied to lakes and tidal inlets, and predicts daily water temperatures from air temperatures and radiation, considering in turn the change of thermal inertia with depth. Bottom temperature data for model calibration, and also salinity, were recorded on 666 oceanographic stations between July 1993 and December 2012. More than 95% of daily bottom temperature variation was explained by the fitted model, and predictability decreased from 98 to 82% in relation to the increase in thermal inertia with depth. High model deviations (>1.5 °C) were associated with a particular salinity range (33.6-33.9) and evidenced eventual occurrence of cold water advections more evident during the warm season. In response to the changes in thermal inertia with depth, the seasonal occurrence of two opposite horizontal thermal gradients was evident each year. These gradients involved a shoreward warming during the warm season, which promotes fish reproductive aggregations, and a shoreward cooling (warming toward deeper zones) during the cold season, which is related with adult fish dispersion or even migration. Up to more than one month of difference in the onset-end pattern of these thermal gradients was observed depending on the year. Long-term linear variation trends in temperatura changed seasonally, with higher cooling rates during spring months, which was particularly evident during October. Also, irregular 3 to 7 year thermal oscillations appeared to occur, indicating the influence 56 of one or more climate variability phenomena. These results depict the general dynamics of bottom temperature patterns in a shallow temperate marine ecosystem, with particular emphasis on their implications for understanding different aspects of fish populations. Particularly, the model and specific data provided in this study will help to further advance our knowledge of this marine ecosystem, in which fishes play an important economical role.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
SHALLOW WATER
dc.subject
PHYSICAL MODELS
dc.subject
BOTTOM TEMPERATURE
dc.subject
THERMAL GRADIENT
dc.subject
FISH DISTRIBUTION
dc.subject
FISH REPRODUCTION
dc.subject.classification
Geociencias multidisciplinaria
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Modeling the bottom temperature variation patterns on a coastal marine ecosystem of the Southwestern Atlantic Ocean (El Rincón), with special emphasis on thermal changes affecting fish populations
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-10-06T19:11:46Z
dc.journal.volume
212
dc.journal.pagination
11 p.
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Elisio, Mariano. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina
dc.description.fil
Fil: Maenza, Reinaldo Agustín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
dc.description.fil
Fil: Luz Clara Tejedor, Moira. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina
dc.description.fil
Fil: Baldoni, Ana Graciela. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina
dc.journal.title
Journal Of Marine Systems
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S092479632030141X
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.jmarsys.2020.103445
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