Benitez-Diaz Miron M. I., Castellanos-Paez M. E., Garza-Mourino G., Ferrara-Guerrero M. J., Pagano Marc. (2014). Spatiotemporal variations of zooplankton community in a shallow tropical brackish lagoon (Sontecomapan, Veracruz, Mexico). Zoological Studies, 53, p. art. 59. ISSN 1021-5506.
Titre du document
Spatiotemporal variations of zooplankton community in a shallow tropical brackish lagoon (Sontecomapan, Veracruz, Mexico)
Année de publication
2014
Auteurs
Benitez-Diaz Miron M. I., Castellanos-Paez M. E., Garza-Mourino G., Ferrara-Guerrero M. J., Pagano Marc
Source
Zoological Studies, 2014,
53, p. art. 59 ISSN 1021-5506
Background We studied the relationships between zooplankton distribution and environmental and trophic factors (abiotic variables, nutrients, bacterial biomass, and chlorophyll pigments) from three sampling surveys carried out during the three hydrological seasons (rainy, dry, and norte) in a tropical coastal lagoon connected to the sea. Results Twenty eight (28) of the 54 taxa recorded were identified to species level, of which 3 genera of Cladocera were observed for the first time in the lagoon. Season-specific differences were highly significant. The overall zooplankton abundance was significantly higher during the dry season (157,000 ind.m(-3)) than those during the rainy and norte surveys (means of 11,600 and 16,700 ind.m(-3) respectively). Copepoda (mostly nauplii) was the most abundant group (>83%) of total zooplankton abundance. Conclusions Multivariate (coinertia) and multilinear regression analyses showed that transparency, salinity, temperature, pH, and food availability (Chl a, b, and c) were the main determinants of zooplankton abundance, composition, and diversity, explaining the seasonal differences. The relatively low zooplankton density in the lagoon compared to other eutrophic lagoons is attributed to the combined effects of high water exchanges, low depth, and high transparency, which favor instability and vulnerability to UV effects and/or to visual predation.
Plan de classement
Ecologie, systèmes aquatiques [036]
Description Géographique
MEXIQUE ; MEXIQUE GOLFE ; ZONE TROPICALE
Localisation
Fonds IRD [F B010063617]
Identifiant IRD
fdi:010063617
