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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad de Costa Rica
2006
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| Online Access: | https://www.redalyc.org/articulo.oa?id=44920186014 |
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Table of Contents:
- Diversity and abundance of littoral cladocerans and copepods in nine Ecuadorian highland lakes Leticia E. Torres Kent Rylander Biología Andes lakes Ecuador zooplankton microcrustaceans The diversity and abundance of littoral cladocerans and copepods were studied in nine lakes at Reserva Ecológica Cayambe-Coca (Páramo de Guamaní), Ecuador. Six samples were taken in the littoral zone of each lake using a 500 µm mesh plankton conic net. One species of cladocerans (Ephemeroporus acanthoides) is reported for the first time in Ecuador. The diversity (H) and evenness (E) of the lakes were determined and correlated with PCA axes based on their environmental variables. The principal parameters that distinguished these lakes were altitude and pH, an unexpected finding considering that the altitudinal range was very small. Lake size is of secondary importance for this group of lakes. None of the environmental axes correlated with H or E; nevertheless, a larger than expected species richness was found in a small oligotrophic lake with a high level of DO. Based on our results, we hypothesize that altitude and pH are important factors determining the zooplankton diversity (directly or indirectly) in highland lakes. 2006 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44920186014 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.1 Vol.54