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

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 (...

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Bibliographic Details
Main Authors: Schimpf, Nele M, Liesner, Daniel, Franke, Kiara, Roleda, Michael Y, Bartsch, Inka
Format: Dataset
Language:English
Published: PANGAEA 2022
Subjects:
common garden experiment
gametogenesis
growth
kelp
Laboratory experiment
latitude
Local adaptation
North Atlantic
Reproduction
FOS Medical biotechnology
Survival
Temperature
upper survival temperature
Event label
Type of study
Species
Uniform resource locator/link to reference
Origin
Identification
Temperature, water
Treatment period
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 to width ratio
Hand picking
Counting, Stereo Microscope
Calculated
Alfred Wegener Institute
Bodø
Tromsø
Spitsbergen
Online Access:https://dx.doi.org/10.1594/pangaea.943521
https://doi.pangaea.de/10.1594/PANGAEA.943521
Description
Summary: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 ...

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