@article{Papa2011Spati-7989,
  year={2011},
  doi={10.1007/s10750-010-0591-2},
  title={Spatio-temporal variation of the zooplankton community in a tropical caldera lake with intensive aquaculture (Lake Taal, Philippines)},
  number={1},
  volume={664},
  issn={0018-8158},
  journal={Hydrobiologia},
  pages={119--133},
  author={Papa, Rey Donne S. and Zafaralla, Macrina T. and Eckmann, Reiner}
}

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    <dcterms:bibliographicCitation>First publ. in: Hydrobiologia 664 (2011), 1, pp. 119-133</dcterms:bibliographicCitation>
    <dc:creator>Papa, Rey Donne S.</dc:creator>
    <dc:contributor>Papa, Rey Donne S.</dc:contributor>
    <dc:creator>Eckmann, Reiner</dc:creator>
    <dcterms:title>Spatio-temporal variation of the zooplankton community in a tropical caldera lake with intensive aquaculture (Lake Taal, Philippines)</dcterms:title>
    <dc:contributor>Eckmann, Reiner</dc:contributor>
    <dc:contributor>Zafaralla, Macrina T.</dc:contributor>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2012-04-30T22:25:04Z</dcterms:available>
    <dc:creator>Zafaralla, Macrina T.</dc:creator>
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    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:39:05Z</dc:date>
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    <dcterms:abstract xml:lang="eng">Zooplankton were collected from Lake Taal between January and December 2008 in order to test for differences in species composition and abundance between a lake basin with intensive fish cage (FC) aquaculture and an open water area without FCs. Most species showed similar patterns of occurrence in both basins while having differences in abundance. Several rotifer species were more abundant in FC sites most of the year, while for microcrustaceans higher abundances in FC sites only happened during the first 2 months. Their distribution is attributed to the presence of higher nutrient levels in FC sites as well as wind-induced basin-wide water movements during the different monsoon seasons which disperse plankton and nutrients from FC sites to other parts of the lake. Zooplanktonic indicators, such as the Brachionus-Trichocerca quotient (QB/T) and the ratio of calanoids to cladocerans and cyclopoids, clearly demonstrate the eutrophic state of the lake. A comparison with previous studies suggests that the lake was already eutrophic prior to the introduction of aquaculture in the 1970s. The trophic conditions in Lake Taal may be attributed to the lakes' tropical and volcanic nature, with  roductivity further enhanced by increased nutrient input from aquaculture.</dcterms:abstract>
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