Genomic datasets of Laminaria digitata: Paired-end reads from dd-RADseq, reference genome assembly and filtered VCF

The impact of ongoing climate change on populations will be contingent upon their contemporary adaptive evolution. In this study, we investigated the contemporary evolution of four populations of the cold-water kelp Laminaria digitata by analysing their spatial and temporal genomic variation using ddRAD-sequencing. These populations were sampled from the center to the southern margin of its north-eastern Atlantic distribution at two-time points, spanning at least two generations. Through genome scans for local adaptation at a single time point, we identified candidate loci that showed clinal variation correlated with changes in sea surface temperature (SST) along latitudinal gradients. This finding suggests that SST may drive the adaptive response of these kelp populations, although factors such as species' demographic history should also be considered. Additionally, we performed a simulation approach to distinguish the effect of selection from genetic drift in allele frequency changes ..., Please refer to the Methods section in the published manuscript for detailed information., , # Genomic datasets of Laminaria digitata: Paired-end reads from dd-RADseq, reference genome assembly and filtered VCF

Feel free to contact Lauric Reynes ([[e-mail]](mailto:[e-mail]); [https://orcid.org/0000-0002-0223-4332](https://orcid.org/0000-0002-0223-4332) for any inquiries regarding this repository and data organization.

Temporal genomics aids in deciphering neutral and adaptive patterns in the contemporary evolution of kelp populations.

The ongoing climate change affects populations differently based on their adaptive evolution. The study focused on Laminaria digitata populations, revealing variations in genetic adaptation to sea surface temperature gradients. It highlights the importance of understanding the interplay between selection and genetic drift in different environments and underscores the value of temporal genomics in studying the contemporary evolution of marine species facing climate change.

The preprint of the published manuscript is availabl...