Variacion estacional en el Lago de Rio Cuarto, provincia de Alajuela, Costa Rica. II Distribución estacional del zooplancton
Keywords:
Variacion, estacional, zooplanctonAbstract
Several limnological studies were carried out between February 1984 and March 1985 in Río Cuarto Lake. Composition of the zooplanktonic community seasonal changes and vertical distribution of the most abundant zooplankton species were determined, and correlated with the results of chemicals, physical and biological data.
The rotifers were the most important group in the zooplanktonic community. The rotifers identified were Keratella americana, Polyarthra vulgaris, Pompholix complanata, Hexarthra intermedia, Euchlanis diladata and Lecane sp. In addition the cladocerans Diaphanosoma spinulossum and Bosmina longirostris and a copepod Microcyclops varicans were found.
The greatest zooplanktonic diversity was found during the rain seasons, which were characterized by higher oxygen concentrations in the water column.
On the other hand the dry season favored population increments during which period the density of the zooplanktonic community was the highest. The most important food sources for zooplankton were phytoplankton, bacteria and detritus.
Downloads
Published
Issue
Section
License
Authors who publish with this journal agree to the following terms:
1. Authors guarantee the journal the right to be the first publication of the work as licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
2. Authors can set separate additional agreements for non-exclusive distribution of the version of the work published in the journal (eg, place it in an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
3. The authors have declared to hold all permissions to use the resources they provided in the paper (images, tables, among others) and assume full responsibility for damages to third parties.
4. The opinions expressed in the paper are the exclusive responsibility of the authors and do not necessarily represent the opinion of the editors or the Universidad Nacional.
Uniciencia Journal and all its productions are under Creative Commons Atribución-NoComercial-SinDerivadas 4.0 Unported.
There is neither fee for access nor Article Processing Charge (APC)
