Statistical Analysis of Spatial and Temporal Dynamics of a Bacterial Layer in an Aquatic Ecosystem

dc.contributor.authorGerss, J.de
dc.contributor.authorSchach, S.de
dc.contributor.authorUrfer, W.de
dc.date.accessioned2004-12-06T18:40:44Z
dc.date.available2004-12-06T18:40:44Z
dc.date.issued1999de
dc.description.abstractDo active vertical mass movements occur within a population of phototropic bacteria in the meromictic Lake Cadagno? An experiment was conducted in vivo to record vertical profiles of the parameters turbidity and temperature in a spatial resolution of 30cm repeatedly over time. After eliminating the temporal dependencies within both the space-time data of turbidity measurements and temperatures, the respective spatial correlation structure can be estimated. Spatial prediction (Kriging) then offers a tool to enhance the observed spatial resolution of both processes. By means of the (temporally repeated) turbidity profiles the vertical position of the bacterial layer can be estimated at each time point. Obviously its vertical displacements in course of the observational time occur not only due to active bacterial swimming; additionally the bacteria are dragged along passively by internal waves in the lake. Eliminating this latter disturbing effect the estimated temperature (instead of depth) at the bounds of the layer in course of time allows to draw conclusions on the active component of bacterial movements. Such phenomena can be found especially at the lower bound of the bacterial layer with amplitudes up to more than 30cm.en
dc.format.extent309054 bytes
dc.format.extent730875 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypeapplication/postscript
dc.identifier.urihttp://hdl.handle.net/2003/4967
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-15096
dc.language.isoende
dc.publisherUniversitätsbibliothek Dortmundde
dc.subjectactive bacterial movementen
dc.subjectordinary krigingen
dc.subjectspace-time processen
dc.subjectspatial resolutionen
dc.subjectvariogramen
dc.subject.ddc310de
dc.titleStatistical Analysis of Spatial and Temporal Dynamics of a Bacterial Layer in an Aquatic Ecosystemen
dc.typeTextde
dc.type.publicationtypereporten
dcterms.accessRightsopen access

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