Effects of kelp canopy on underwater light climate and viability of brown algal spores in Kongsfjorden (Spitsbergen) ...

• Main Author: Laeseke, Philipp
• Format: Dataset
• Language: English
• Published: PANGAEA 2020
• Subjects: Ny-Ålesund; Svalbard; Kongsfjord*; Kongsfjorden; Ny Ålesund; Spitsbergen
• Online Access: https://dx.doi.org/10.1594/pangaea.925298; https://doi.pangaea.de/10.1594/PANGAEA.925298

We measured the effects of underwater light in summer 2015 on kelp spore parameters (Fv/Fm, pigment concentration, motility, phlorotannin content and germination success). Alaria esculenta spores were exposed in the laboratory to light conditions as found under no to very dense kelp canopies for 8 to 24 hours. Parameters were measured immediately after exposure and after recoveries. Fv/Fm was measured with a PAM-Fluorometer, pigment and phlorotannin concentrations were analysed in the laboratory at the University of Bremen (samples shipped lyophilized) and motility and germination success were investigated with a microscope.Our results were used in a publication to elucidate to what extent spores are sheltered from light stress by parental kelp canopies under natural conditions.Longitude: 11.916738Latitude: 78.925463(Ny-Ålesund, Svalbard)Depth: 0 - 3m depthDate: 16.06.2015 - 18.07.2015Time: 12:00 am (noon, light measurements) ...