G
Gesine Witt
Researcher at Hamburg University of Applied Sciences
Publications - 34
Citations - 867
Gesine Witt is an academic researcher from Hamburg University of Applied Sciences. The author has contributed to research in topics: Sediment & Environmental science. The author has an hindex of 13, co-authored 27 publications receiving 725 citations. Previous affiliations of Gesine Witt include Leibniz Association & Leibniz Institute for Baltic Sea Research.
Papers
More filters
Journal ArticleDOI
Passive sampling methods for contaminated sediments: Scientific rationale supporting use of freely dissolved concentrations
Philipp Mayer,Thomas F. Parkerton,Rachel G. Adams,John G Cargill,Jay Gan,Todd Gouin,Philip M. Gschwend,Steven B. Hawthorne,Paul A. Helm,Gesine Witt,Jing You,Beate I. Escher +11 more
TL;DR: In this paper, the authors used passive sampling to measure the freely dissolved concentration (Cfree) of an organic contaminant even in complex matrices such as sediments, which is directly related to a contaminant's chemical activity, which drives spontaneous processes including diffusive uptake into benthic organisms and exchange with the overlying water column.
Journal ArticleDOI
Polycyclic aromatic hydrocarbons (PAHs) in sediments of the Baltic Sea and of the German coastal waters
Gesine Witt,Erika Trost +1 more
TL;DR: In this paper, the concentrations of PAHs were analyzed by HPLC and fluorescence detection in surface sediments and sediment cores collected in the Belt Sea and Arkona Sea as well as in the internal and external coastal waters of Mecklenburg-Vorpommern.
Journal ArticleDOI
Material transport from the nearshore to the basinal environment in the southern Baltic Sea I. Processes and mass estimates
Christian Christiansen,Karen Edelvang,Kay-Christian Emeis,Gerhard Graf,Sabine Jähmlich,J. Kozuch,Mario J.C. Laima,Thomas Leipe,A. Löffler,Lars Chresten Lund-Hansen,Anja Miltner,Ksenia Pazdro,Janusz Pempkowiak,Graham B. Shimmield,Tracy M Shimmield,Jason Smith,Maren Voss,Gesine Witt +17 more
TL;DR: In this paper, a transect from shallow (16 m) to deep (47 m) water of the SW Baltic Sea is studied in which wave and current-induced energy input to the seabed in shallow water is high with strong variability and suspended matter concentrations may double within a few hours.
Journal ArticleDOI
Matrix solid-phase microextraction for measuring freely dissolved concentrations and chemical activities of PAHs in sediment cores from the western Baltic Sea
TL;DR: Sediment-pore water partitioning of polycyclic aromatic hydrocarbons was studied in sediment cores of a dumping area in the western Baltic Sea and compared to a reference site to obtain a spatial characterization of the PAH exposure.
Journal ArticleDOI
Ecotoxicity assessment of natural attenuation effects at a historical dumping site in the western Baltic Sea.
Thomas Leipe,Michael Kersten,Susanne Heise,Christa Pohl,Gesine Witt,Gladys A. Liehr,Michael L. Zettler,Franz Tauber +7 more
TL;DR: Recent sediments of the historical dump site are still significantly enriched in heavy metals and PAHs, though uptake of contaminants in mussels was found to deviate only slightly from that of a non-contaminated reference station due to a gradual dilution and decrease in bioavailability of the contaminants.