ArticleMolecular ecology2015
Local adaptation and oceanographic connectivity patterns explain genetic differentiation of a marine diatom across the North Sea-Baltic Sea salinity gradient.
Article in Molecular ecology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers, 1 of them a synthesis that pooled it.
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44 citing papers in PubMed, 1 synthesis or guideline pooled it, 142 citations in OpenAlex.
- Assessing cumulative impacts of human-induced pressures on reef and sandbank habitats and associated biotopes in the northeastern Baltic Sea.Marine pollution bulletin · 2022Pooled it
- Review
- Drift and Selection in a Recently Colonized Sea: The Genomic Basis of Adaptation to Low-Salinity Waters in Baltic Harbour Porpoises.Molecular ecology · 2026Article
- Methods to estimate marine functional connectivity: A primer.Ecological applications : a publication of the Ecological Society of America · 2026Review
- Niche divergence suggests ecophysiological differences between cryptic phytoplankton species.ISME communications · 2026Article
- Millennia-Long Evolution of Temperature and Salinity Dependence of a Baltic Sea Diatom Revealed by Resurrection Experiments.Global change biology · 2025Article
- Evolutionary history and seascape genomics of Harbour porpoises (Phocoena phocoena) across environmental gradients in the North Atlantic and adjacent waters.Molecular ecology resources · 2025Article
- Genome-Wide Adaptation to a Complex Environmental Gradient in a Keystone Phytoplankton Species.Molecular ecology · 2025Article
- Strain-specific metabarcoding reveals rapid evolution of copper tolerance in populations of the coastal diatom Skeletonema marinoi.Molecular ecology · 2024Article
- How does evolution work in superabundant microbes?Trends in microbiology · 2024Review
- Multi-trait diversification in marine diatoms in constant and warmed environments.Proceedings. Biological sciences · 2024Article
- Population genomic analyses reveal that salinity and geographic isolation drive diversification in a free-living protist.Scientific reports · 2024Article
- Holistic view of the seascape dynamics and environment impact on macro-scale genetic connectivity of marine plankton populations.BMC ecology and evolution · 2023Article
- Phytoplankton diversity explained by connectivity across a mesoscale frontal system in the open ocean.Scientific reports · 2023Article
- Ocean connectivity and habitat characteristics predict population genetic structure of seagrass in an extreme tropical setting.Ecology and evolution · 2023Article
- Oceanographic connectivity explains the intra-specific diversity of mangrove forests at global scales.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Local adaptation through countergradient selection in northern populations ofEvolutionary applications · 2023Article
- Out to sea: ocean currents and patterns of asymmetric gene flow in an intertidal fish species.Frontiers in genetics · 2023Article
- Genomic differentiation of three pico-phytoplankton species in the Mediterranean Sea.Environmental microbiology · 2022Article
- Phenological segregation suggests speciation by time in the planktonic diatomEcology and evolution · 2022Article
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Authors and funding
5 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Drivers of population genetic structure are still poorly understood in marine micro-organisms. We exploited the North Sea-Baltic Sea transition for investigating the seascape genetics of a marine diatom, Skeletonema marinoi. Eight polymorphic microsatellite loci were analysed in 354 individuals from ten locations to analyse population structure of the species along a 1500-km-long salinity gradient ranging from 3 to 30 psu. To test for salinity adaptation, salinity reaction norms were determined for sets of strains originating from three different salinity regimes of the gradient. Modelled oceanographic connectivity was compared to directional relative migration by correlation analyses to examine oceanographic drivers. Population genetic analyses showed distinct genetic divergence of a low-salinity Baltic Sea population and a high-salinity North Sea population, coinciding with the most evident physical dispersal barrier in the area, the Danish Straits. Baltic Sea populations displayed reduced genetic diversity compared to North Sea populations. Growth optima of low salinity isolates were significantly lower than those of strains from higher native salinities, indicating local salinity adaptation. Although the North Sea-Baltic Sea transition was identified as a barrier to gene flow, migration between Baltic Sea and North Sea populations occurred. However, the presence of differentiated neutral markers on each side of the transition zone suggests that migrants are maladapted. It is concluded that local salinity adaptation, supported by oceanographic connectivity patterns creating an asymmetric migration pattern between the Baltic Sea and the North Sea, determines genetic differentiation patterns in the transition zone.
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