Photosynthesis versus irradiance curve parameters of Laminaria hyperborea off the island of Helgoland in summer 2014

Description: Laminaria hyperborea off the island of Helgoland (North Sea, Germany) was sampled along a depth gradient (0.5, 2, 4, 6 m) throughout summer 2014. Discs were cut from three different blade regions (5, 25 and 50 cm above the stipe-blade transition zone) and set into photosynthesis versus irradiance (PI) curves. PI curves were fitted by minimizing the sum of differences between the measured oxygen flux and the model proposed by Jassby and Platt (1976). Parameters were normalized to fresh mass and area.

Global identifier:

Doi(
    "10.1594/PANGAEA.958900",
)

Measurements(
    Measurements {
        domain: Unspecified,
        station: None,
        measured_variables: [
            "Event label",
            "DEPTH, water",
            "Laminaria hyperborea, blade region",
            "Replicate",
            "Maximum oxygen production rate, per fresh mass",
            "Light utilization coefficient, per fresh mass",
            "Light saturation point",
            "Light compensation point",
            "Dark respiration rate, oxygen, per fresh mass",
            "Maximum oxygen production rate, per disc area",
            "Light utilization coefficient, per disc area",
            "Light saturation point",
            "Light compensation point",
            "Dark respiration rate, oxygen, per disc area",
        ],
        methods: [
            "Calculated according to Jassby & Platt (1976)",
            "Calculated according to Jassby & Platt (1976)",
            "Calculated according to Jassby & Platt (1976)",
            "Calculated according to Jassby & Platt (1976)",
            "Calculated according to Jassby & Platt (1976)",
            "Calculated according to Jassby & Platt (1976)",
            "Calculated according to Jassby & Platt (1976)",
            "Calculated according to Jassby & Platt (1976)",
            "Calculated according to Jassby & Platt (1976)",
            "Calculated according to Jassby & Platt (1976)",
        ],
    },
)

Dataset

Comment: Additional funding was provided by the Postdoctoral fellowship grant of the Fonds de recherche du Québec - Nature et technologies and the Weston Foundation.

Origins: /Wissenschaft/PANGAEA

Tags: Helgoland ? Insel ? Nordsee ? Chlorophyll a ? Fv/Fm ? Kelp ? Photosynthesis versus irradiance curves ? Primary production ? blade gradient ? depth gradient ? diffuse attenuation coefficient ? dry mass/area ratio ? in situ PAR ? net primary production ? oxygen evolution ? photoacclimation ?

Region: off Helgoland, North Sea

Bounding boxes: 7.85888° .. 7.87748° x 54.1905° .. 54.19722°

License: cc-by/4.0

Language: Englisch/English

Organisations

• Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (Mitwirkende) [1]
• Deutsche Forschungsgemeinschaft, Bonn (Geldgeber*in) [1]
• PANGAEA (Herausgeber*in)
• Universität Rostock (Mitwirkende)

Persons

• Angelika Graiff (Beitragende*r) [1] [ORCID]
• Inka Bartsch (Beitragende*r) [1] [ORCID]
• Kiara Franke (Beitragende*r) [1] [ORCID]
• Lisa C Matthes (Beitragende*r) [1] [ORCID]
• Ulf Karsten (Beitragende*r) [1] [ORCID]

Issued: 2023-06-15

Modified: 2023-06-15

Time ranges: 2014-07-24 - 2014-09-06

Resources

• https://doi.pangaea.de/10.1594/PANGAEA.958900?format=textfile (TSV)

Status

Aktiv

Quality score

• Overall: 0.89
• Findability: 0.58

  • Title: 0.25
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  • Spatial: BoundingBox (0.50)
  • Temporal: true
• Accessibility: 1.00

  • Landing page: Specific (1.00)
  • Direct access: true
  • Publicly accessible: true
• Interoperability: 1.00

  • Open file format: true
  • Media type: true
  • Machine-readable metadata: true
  • Machine-readable data: true
• Reusability: 1.00

  • License: ClearlySpecifiedAndFree (1.00)
  • Contact info: true
  • Publisher info: true

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