Siphonophores off a riverine system in the southern Gulf of Mexico: factors affecting their distribution and spatial niche breadth and overlap
Por:
Sanvicente-Añorve L., Alba C., Flores-Coto C., Castillo-Rivera M.
Publicada:
1 jun 2009
Resumen:
Environmental factors determining the spatial pattern of the whole siphonophore community, as well as the hydrological occurrence ranges, small-scale vertical distribution, and spatial niche breadth and overlap of 23 siphonophore species collected off a riverine system in the southern Gulf of Mexico were analysed. A total of 149 zooplankton samples were collected in different strata of the water column (from 0 to 100 m) over a grid of 23 oceanographic stations during low (April) and high (October) rainy periods. Temperature and salinity measurements were taken with a CTD probe. Considering both seasons, salinity fluctuated between 30.7 and 37.0, and temperature between 18.2 and 29.0A degrees C. Under these conditions, the hydrological occurrence ranges of species were analysed. Data on siphonophore biovolumes in the upper 30-m layer were subjected to a regression tree (RT) analysis taking the zooplankton biomass, the distance to the shore, the temperature, and the salinity as predictab
Filiaciones:
Sanvicente-Añorve L.:
Univ Nacl Autonoma Mexico, Inst Ciencias Mar & Limnol, Mexico City 04510, DF, Mexico
Instituto de Ciencias Del Mar y Limnología, Universidad Nacional Autónoma de México, Apdo. Postal 70-305, Mexico, D.F 04510, Mexico
Alba C.:
Univ Nacl Autonoma Mexico, Inst Ciencias Mar & Limnol, Mexico City 04510, DF, Mexico
Instituto de Ciencias Del Mar y Limnología, Universidad Nacional Autónoma de México, Apdo. Postal 70-305, Mexico, D.F 04510, Mexico
Flores-Coto C.:
Univ Nacl Autonoma Mexico, Inst Ciencias Mar & Limnol, Mexico City 04510, DF, Mexico
Instituto de Ciencias Del Mar y Limnología, Universidad Nacional Autónoma de México, Apdo. Postal 70-305, Mexico, D.F 04510, Mexico
Castillo-Rivera M.:
División de Ciencias Biológicas y de la Salvel, Universidad Autónoma Metropolitana, Unidad Iztapalapa, Apartado Postal 55-535, México, D.F. 09340, Mexico
|