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    33 METADOMIX

    Title
    METADOMIX
    Description
    1. Study of landuse effects on dissolved organic matter chemistry and ecosystem metabolism (primary production, respiration) in a diverse cultural landscape of Central Europe. Hypothesis: Landuse affects metabolism and DOM chemistry, metabolism and DOM interact reciprocally. Approach: Single snapshot of DOM chemistry and diurnal oxygen (24 hours minimum with 2 consecutive nights, later inverse metabolism modelling) at streams along a landuse gradient.
    2. Investigation of effects of mixing variously composed dissolved organic matter (and nutrients) at natural confluences on DOM biodegradation. Main hypothesis: Mixing of chemically differentiated water has non-additive influence on biodegradation (i.e. biodegradation below confluence cannot be predicted from tributaries). Approach: Collect water from naturally merging streams just before confluence, mix in lab according to observed discharge ratio and run 14-day biodegradation assays. Study biodegradation rates and changes of DOM composition during biodegradation assay.

     

    Study site
    Running water bodies
    Sampling locations
    Feldaist
    location
    48.33669, 14.56780
    location
    code
    2
    description
    Waldaist
    location
    48.33751, 14.56925
    location
    code
    3
    description
    Melk
    location
    48.1494, 15.2718
    location
    type
    state
    code
    1
    description
    Parameters

    physics:

    velocity
    name
    velocity
    synonyms
    speed, Geschwindigkeit
    water temperature
    name
    water temperature
    description

    determination by temperature-probe

    synonyms
    water temp, Wassertemperatur

    chemistry:

    C, DOC (dissolved organic carbon)
    name
    C, DOC (dissolved organic carbon)
    description

    0,45µm filtrated,   purging with hydrochloric acid, nondispersive infrared sensor  (NDIR) after combustion

    synonyms
    dissolved organic material (DOM), non-purgeable organic carbon (NPOC)
    N, nitrate-nitrogen
    name
    N, nitrate-nitrogen
    description

    0,45µm filtrated, photometric determination

    synonyms
    NO3-N, NO3--N, nitrate, Nitrat
    O, oxygen concentration
    name
    O, oxygen concentration
    description

    determination by oxygen-probe

    synonyms
    Sauerstoffkonzentration
    P, (soluble reactive phosphorus)
    name
    P, (soluble reactive phosphorus)
    description

    0,45µm filtrated, photometric determination

    synonyms
    anorganischer gelöster Phosphor, ortho-Phosphat-P, DRP, DIP, inorganic soluble phosphorus, phosphate-phosphorus
    Contact
    Thomas Fuss, Gabriel Andreas Singer
    Licence for data
    All rights reserved. Please send a request to Thomas Fuss, Gabriel Andreas Singer if you like to use this data. Mind our data policy: IGB Data Policy

    Metadata files

    TitleUpload dateFiletypeLicenceActions
    METADOMIX_variables.pdf19. Dec. 2017 12:02.pdfODC-By
    Error: To access file, please get in touch with the contact person.

    Machine Readable Metadata Files

    FRED provides all metadata of this package in a maschine readable format. There is a pure XML file and one EML file in Ecological Metadata Language. Both files are published under the freeODC-ByLicence.

    • METADOMIX.xml
    • METADOMIX.eml

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