La pesca de sardina, Sardinella aurita (Teleostei: Clupeidae) asociada con la variabilidad ambiental del ecosistema de surgencia costera de Nueva Esparta, Venezuela / Association of sardine fishery, Sardinella aurita (Teleostei: Clupeidae) and environmental variability of the coastal upwelling ecosystem of Nueva Esparta, Venezuela
Rev. biol. trop
;
55(1): 279-286, Mar. 2007. mapas, tab, graf
Article
Dans Espagnol
| LILACS
| ID: lil-501474
ABSTRACT
The present research is an analysis of Spanish sardine fishing (Sardinella aurita) associated with some climatic and meteorologic parameters of the ecosystem from El Morro Nueva Esparta, Venezuela. The catch and environmental data from the area were taken in the period 1996-2000. Catch data as a function of wind speed, sea surface temperature, air temperature and rain were analyzed by means of simple lineal regression and multiple models. We found a positive correlation of catch with wind speed, and a negative correlation with sea surface temperature, air temperature, and rain. The multiple regression model with intercept had a poor fit, therefore, we made a model without intercept, which improve greatly the fit. A selection of the variables using the forward procedure verified that the independent variables "wind speed" and "air temperature" have a significant relation with catch (p < 0.001) at real time. This method suggests that sea surface temperature and rain have little influence on the catch, and suggests a major availability of resources in the months with low air temperature and the highest wind speed (January-June). Rev.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Écosystème
/
Pêcheries
/
Poissons
Type d'étude:
Étude pronostique
/
Facteurs de risque
Limites du sujet:
Animaux
Pays comme sujet:
Amérique du Sud
/
Vénézuela
langue:
Espagnol
Texte intégral:
Rev. biol. trop
Thème du journal:
Biologie
/
Médecine tropicale
Année:
2007
Type:
Article
Pays d'affiliation:
Mexique
/
Venezuela
Institution/Pays d'affiliation:
Centro de Investigación y de Estudios Avanzados del IPN/MX
/
Universidad de Oriente/VE
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