Short-term responses of phytoplankton to nutrient enrichment and planktivorous fish predation in a temperate South American mesotrophic reservoir View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2007-11-20

AUTHORS

P. Acuña, I. Vila, V. H. Marín

ABSTRACT

Top-down and bottom-up mechanisms have been proposed as potential regulators of the phytoplankton biomass of aquatic ecosystems. We evaluated the effect of nutrient enrichment and planktivorous fish predation through a mesocosm experiment conducted at a polimictic system (Peñuelas reservoir, Chile). Results show that phytoplankton biomass increased, while diversity decreased, in nutrient-enriched treatments. Planktivorous fish predation did not have a significant effect on phytoplankton biomass but led to a reduction of bigger zooplankton abundance. These results are an indication that these reservoir systems would be preferentially influenced by resource availability in short-term manipulations. More... »

PAGES

131-138

References to SciGraph publications

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  • 1949-04. Measurement of Diversity in NATURE
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  • 2003-06. The Impact of Nutrient State and Lake Depth on Top-down Control in the Pelagic Zone of Lakes: A Study of 466 Lakes from the Temperate Zone to the Arctic in ECOSYSTEMS
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/s10750-007-9182-2

    DOI

    http://dx.doi.org/10.1007/s10750-007-9182-2

    DIMENSIONS

    https://app.dimensions.ai/details/publication/pub.1006997505


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