Responses of zooplankton to cane sugar additions to a small humic lake, Alinen Mustajärvi

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Show simple item record Ewane, Basil 2010-08-08T16:02:47Z 2010-08-08T16:02:47Z 2010
dc.identifier.uri en
dc.description.abstract The response to projected increase in dissolved organic carbon (DOC) loading to boreal lakes is being studied in lake Alinen Mustajärvi, a small humic lake in southern Finland, where labile DOC concentration has been artificially increased during 2008 and 2009 by monthly additions of cane sugar. As part of this wider project, in this thesis the responses of the zooplankton community to cane sugar addition were studied. Zooplankton samples were collected monthly in the ice-free periods of 2007, 2008 and 2009 and the mean densities and mean carbon biomasses of rotifers and crustacean zooplankton (cladocerans and copepods) were calculated. Stable isotope analyses (δ13C and δ15N) were made for the crustacean zooplankton samples. Zooplankton respond to additions of DOC by an appreciable increase in the mean density of rotifers and carbon biomass of copepods, while both the mean density and carbon biomass of cladocerans showed a decrease between years. Values for δ13C increased progressively across the years, especially for cladocerans, but less so for copepods. This suggests strongly that appreciable DOC from sugar additions was being transferred to zooplankton by heterotrophic bacteria and zooplankton dependence on heterotrophic bacteria appeared to increase with the increased loading of DOC in lake Alinen Mustajärvi.
dc.format.extent 32 sivua
dc.language.iso eng
dc.rights This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited. en
dc.rights Julkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty. fi
dc.rights openAccess fi
dc.subject.other carbon biomass
dc.subject.other cladocera
dc.subject.other copepoda
dc.subject.other dissolved organic carbon
dc.subject.other heterotrophic bacteria
dc.subject.other rotifera
dc.subject.other stable isotope analysis
dc.subject.other zooplankton abundance
dc.subject.other zooplankton community
dc.title Responses of zooplankton to cane sugar additions to a small humic lake, Alinen Mustajärvi
dc.identifier.urn URN:NBN:fi:jyu-201008082417
dc.subject.ysa järvet
dc.subject.ysa vesikirput
dc.subject.ysa hankajalkaiset
dc.subject.ysa bakteerit
dc.subject.ysa plankton
dc.type.dcmitype Text en
dc.type.ontasot Pro gradu fi
dc.type.ontasot Master’s thesis en
dc.contributor.tiedekunta matemaattis-luonnontieteellinen tiedekunta fi
dc.contributor.tiedekunta Faculty of Sciences en
dc.contributor.laitos bio- ja ympäristötieteiden laitos fi
dc.contributor.laitos Department of Biological and Environmental Science en
dc.contributor.yliopisto University of Jyväskylä en
dc.contributor.yliopisto Jyväskylän yliopisto fi
dc.contributor.oppiaine akvaattiset tieteet fi
dc.contributor.oppiaine Aquatic sciences en

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