DataSheet_1_Kelp Forest Distribution in the Nordic Region.pdf

• Main Authors: Kristina Ø. Kvile, Guri Sogn Andersen, Susanne P. Baden, Trine Bekkby, Annette Bruhn, Ole Geertz-Hansen, Kasper Hancke, Jørgen L. S. Hansen, Dorte Krause-Jensen, Eli Rinde, Henning Steen, Susse Wegeberg, Hege Gundersen
• Format: Dataset
• Language: unknown
• Published: 2022
• Subjects: Oceanography; Marine Biology; Marine Geoscience; Biological Oceanography; Chemical Oceanography; Physical Oceanography; Marine Engineering; Kelp forest; distribution; Nordic Region; Laminaria; Saccharina; blue forest; boosted regression tree (BRT); Greenland; Norway; Iceland
• Online Access: https://doi.org/10.3389/fmars.2022.850359.s001; https://figshare.com/articles/dataset/DataSheet_1_Kelp_Forest_Distribution_in_the_Nordic_Region_pdf/20071193

Kelp forests are productive coastal ecosystems that provide a range of ecosystem services. Mapping the distribution and area occupied by kelp forests is a critical step to identify their ecosystem functions and services, including their role in the carbon cycle, and to detect changes in their distribution. We compiled quantitative data of the dominant genera Laminaria and Saccharina across the Nordic region, allowing us to separate kelp forests (areas with dense or moderately dense kelp coverage) from occurrences of single or few individuals. By fitting boosted regression trees to the compiled data, we modelled and predicted the distribution of kelp forests across the Nordic region. Despite the large scale of the analyses, the models captured well the kelps’ environmental affinities and predicted the presence of kelp forests with high accuracy. Dense kelp forests are found along the rocky shores of all the Nordic countries, except in the brackish Baltic Sea, with largest areas in Norway, Greenland and Iceland. The results of this study set the scene for future studies on the importance of kelp forests in the Nordic region, including their contribution to the marine carbon budget.