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
in Spanish
| LILACS
| ID: lil-501474
Responsible library:
BR1.1
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.
Full text:
Available
Collection:
International databases
Database:
LILACS
Main subject:
Ecosystem
/
Fisheries
/
Fishes
Type of study:
Prognostic study
/
Risk factors
Limits:
Animals
Country/Region as subject:
South America
/
Venezuela
Language:
Spanish
Journal:
Rev. biol. trop
Journal subject:
Biology
/
Tropical Medicine
Year:
2007
Document type:
Article
Affiliation country:
Mexico
/
Venezuela
Institution/Affiliation country:
Centro de Investigación y de Estudios Avanzados del IPN/MX
/
Universidad de Oriente/VE