‹ › ×

    FRED
    • Contact
    • GDPR policy
    • Imprint
    • About
    • Sign Up
    • Login
    • SEARCH
    • Search and find
    • Packages
    • Map
    • By Category ...
      • Study sites
      • Sampling sites
      • Parameters
      • Sampling types
      • Species groups
      • Current DOIs

    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 sites
    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

    Wassertemperatur

    synonyms
    water temp, Wassertemperatur

    chemistry:

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

    Dissolved organic carbon (DOC), sometimes known as dissolved organic material (DOM),[1] is a broad classification for organic molecules of varied origin and composition within aquatic systems. The "dissolved" fraction of organic carbon is an operational classification. Many researchers use the term "dissolved" for compounds below 0.45 micrometers, but 0.22 micrometers is also common, saving colloidal for higher concentrations. A practical definition of dissolved typically used in marine chemistry is all substances that pass through a GF/F filter. The recommended measure technique is the HTCO technique after filtration on precombusted glass fiber filters, typically GF/F filters.[2]

    Dissolved organic carbon in marine and freshwater systems is one of the greatest cycled reservoirs of organic matter on Earth, accounting for the same amount of carbon as the atmosphere and up to 20% of all organic carbon.[3] The source of dissolved organic carbon depends on the body of water. In general, organic carbon compounds are a result of decomposition processes from dead organic matter such as plants or marine organisms. When water originates from land areas with a high proportion of organic soils, these components can drain into rivers and lakes as dissolved organic carbon.

    Dissolved organic carbon is also extremely important in the transport of metals in aquatic systems. Metals form extremely strong complexes with dissolved organic carbon, enhancing metal solubility while also reducing metal bioavailability.

    (Wikipedia)

    synonyms
    dissolved organic material (DOM), non-purgeable organic carbon (NPOC)
    nitrogen, nitrate-nitrogen
    name
    nitrogen, nitrate-nitrogen
    synonyms
    NO3-N, NO3--N, nitrate, Nitrat
    oxygen concentration
    name
    oxygen concentration
    synonyms
    Sauerstoffkonzentration
    phosphorus (soluble reactive phosphorus)
    name
    phosphorus (soluble reactive phosphorus)
    description

    IGB Methodendatenbank:

    http://intranet.igb-berlin.de/methodendetails/items/75.html

    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

    TitelUpload dateFiletypeLicenceActions
    METADOMIX_variables.pdf19. Dec. 2017 12:02.pdfODC-By
    Error: To access file, please get in touch with the contact person.
    General_MetadataMETADOMIX.xml15. Jan. 2021 21:46xmlODC-By Download
    General_MetadataMETADOMIX.eml15. Jan. 2021 21:46emlODC-By Download

    You are about to leaving FRED and visting a third party website. We are not responsible for the content or availability of linked sites.

    To remain on our site, click Cancel.

    Parsing data File

    Estimated Time:

    Why does it take so much time?

    While parsing a file, the database has to perform various tasks, some of them needs a lot of CPU and memory for larger files.

    • preprocessing: means automatic detection of headlines, table body, format values or csv-separators
    • copying: means read the file cell by cell and copy all elements to the database. During this format settings can be calculated (for example iso-time)
    • analyzing: check out for different data types (can be time, numeric or text)