Browsing by Author "University of Minnesota Duluth Large Lakes Observatory"

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    Sediment mixing and dissolved oxygen and nutrient dynamics in a six week microcosm experiment containing Great Lakes macroinvertebrates
    (2024-05-06) Huff, Audrey H; Rigdon, Matt; Zalusky, John; Katsev, Sergei; Ozersky, Ted; huff0114@umn.edu; Huff, Audrey E; University of Minnesota Duluth Large Lakes Observatory
    Physical and geochemical dynamics at the sediment-water interface in a six-week microcosm experiment including Great Lakes macroinvertebrates (dreissenids, Diporeia, and oligochaete worms) with varying functional biology. Microcosms included single and multi-taxon treatments and data includes sediment mixing rate (as luminophore profiles), weekly NO2,3 and NH3 fluxes between the sediment and overlying water, weekly sediment dissolved oxygen microprofiles, and pore water NO2,3, NH3, and P profiles.
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    Spring and summer 2019 seston, excretion, and tissue C:N:P data for quagga mussels (Dreissena rostriformis bugensis) in Lakes Michigan and Huron
    (2023-04-05) Huff, Audrey E.; Zalusky, John; Katsev, Sergei; Ozersky, Ted; huff0114@umn.edu; Huff, Audrey E.; University of Minnesota Duluth Large Lakes Observatory
    Data include quagga mussel food, tissue, and excretion C, N, and P concentrations from sites throughout Lakes Huron and Michigan (including Green Bay) in the spring and summer of 2019. Samples were taken along trophic status and depth gradients. Site characteristics analyzed include site depth, seston C, N, and P concentrations, chlorophyll a concentration, water temperature, dissolved oxygen concentration, and mussel biomass.
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    Winter and summer zooplankton community and environmental parameters data of thirteen lakes located in Minnesota and Wisconsin
    (2021-05-26) Shchapov, Kirill; Ozersky, Ted; Wilburn, Paul; shcha001@d.umn.edu; Shchapov, Kirill; University of Minnesota Duluth Large Lakes Observatory
    This data set contains the results of a study on taxonomic and functional differences between winter and summer zooplankton communities in lakes across a trophic gradient. Thirteen lakes ('Sites.csv') were sampled across a large trophic status gradient for zooplankton abundance, taxonomic and functional community composition, and Carbon/Nitrogen (C/N) stable isotopes in relation to environmental parameters. Zooplankton abundance and taxonomic identification were made for all stations ('Zooplankton_abundance.csv'); nutrients and C/N stable isotopes values in file 'Environmental_parameters'; lakes light conditions in summer and winter are presented in file 'Light.csv'; bulk zooplankton C/N stable isotopes are in 'Zooplankton_sia.csv' file.