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Laminaria digitata gametophyte survival and microscopic sporophyte formation, abundance and growth during exposure to decreased temperatures

Description: To assess the thermal adaptation of microscopic stages of the kelp Laminaria digitata along latitudes, we conducted laboratory experiments on samples from six locations in the NE Atlantic (Spitsbergen (SPT), Tromsø (TRM), Bodø (BOD; all Norway), Helgoland (HLG; Germany), Roscoff (ROS) and Quiberon (QUI; both France)), spanning the species' entire distribution range. Gametophyte stock cultures from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research were used. Prior to the experiments, cultures were stored at 15°C in iron-free ½ Provasoli enriched seawater in 3-4 µmol photons/m²/s red light. In experiment 2, samples were subjected to (sub-) optimal low temperatures (0-15°C) for 21 days, to assess gametophyte survival, sporophyte formation and growth. During the experiments, samples were kept in 15 µmol photons/m²/s white light under a 16:8h light:dark cycle. Sporophyte growth rates both in length and in width were determined as follows: GR = (x2-x1)/(t2-t1), where x is the length or width (μm) and t is the time in weeks at time point 1 and 2.

Global identifier: 

Doi(
    "10.1594/PANGAEA.943521",
)

Types: 
Measurements(
    Measurements {
        domain: Unspecified,
        station: None,
        measured_variables: [
            "Event label",
            "Type of study",
            "Species",
            "Uniform resource locator/link to reference",
            "Origin",
            "Identification",
            "Temperature, water",
            "Treatment: period",
            "DATE/TIME",
            "DATE/TIME",
            "Experiment day",
            "Laminaria digitata, gametophyte survival",
            "Laminaria digitata, sporophyte formation",
            "Laminaria digitata, sporophyte abundance",
            "Laminaria digitata, sporophyte growth rate in length",
            "Laminaria digitata, sporophyte growth rate in width",
            "Laminaria digitata, sporophyte length/width ratio",
        ],
        methods: [
            "Counting, Stereo Microscope",
            "Counting, Stereo Microscope",
            "Counting, Stereo Microscope",
            "Calculated",
            "Calculated",
            "Calculated",
        ],
    },
)
Dataset

Origins: /Wissenschaft/PANGAEA

Tags: Meerwasser ? Geografische Koordinaten ? Temperatur ? Fortpflanzung ? Studie ? Laborversuch ? Verbreitungsgebiet ? Nordatlantik ? Meeresforschung ? Ressource ? Wasseraufbereitung ? Atlantischer Ozean ? Kelp ? Local adaptation ? Survival ? common garden experiment ? gametogenesis ? growth ? upper survival temperature ?

Region: Northeast Atlantic

Bounding boxes: 3.091° .. 19.054° x 47.47° .. 78.975°

License: cc-by/4.0

Language: Englisch/English

Organisations

Persons

Issued: 2022-04-26

Modified: 2022-06-15

Time ranges: 2020-04-20 - 2020-05-13

Resources

Status

Quality score

Accessed 1 times.