Effects of the availability of energetic and protective resources on the abundance of daphniids (Cladocera, Daphniidae) in Chilean Patagonian Lakes (39 degrees-51 degrees S)

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datacite.alternateIdentifier.citationCRUSTACEANA,Vol.79,23-32,2006
datacite.creatorDe Los Ríos Escalante, Patricio
datacite.creatorSoto, Doris
datacite.date2006
datacite.titleEffects of the availability of energetic and protective resources on the abundance of daphniids (Cladocera, Daphniidae) in Chilean Patagonian Lakes (39 degrees-51 degrees S)
dc.date.accessioned2021-04-30T16:32:55Z
dc.date.available2021-04-30T16:32:55Z
dc.description.abstractThe lacustrine zooplankton of Chile is characterized by a low abundance of daphniid cladocerans and a predominance of calanoid copepods, thus making up a zooplankton community quite different from that described for North American lakes. To explain this pattern, this study investigates the role of the oligotrophy, and the resulting high transparency of a considerable number of locations. Due to low levels of dissolved organic carbon, viz., Daphniidae are exposed to ultraviolet radiation. Chilean lakes located between 39 degrees and 51 degrees S were studied, and maximum depth, mixing depth, trophic status, and dissolved organic carbon concentrations were measured and considered. The results obtained revealed that daphniids were abundant in oligo-mesotrophic lakes with shallow mixing depth. Thus, daphniid abundance is directly associated with chlorophyll-a concentration as an energetic resource, but also with sufficient depth, because this last condition provides protection against the penetration of ultraviolet radiation.
dc.identifier.urihttp://repositoriodigital.uct.cl/handle/10925/2905
dc.language.isoen
dc.publisherBRILL
dc.sourceCRUSTACEANA
oaire.resourceTypeArticle
uct.catalogadorWOS
uct.indizacionSCI
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