1. Baltic marine mammal population boundaries and phylogeography Morten Tange Olsen HELCOM Seal 8 Turku, Oct 2014

2. Harbour seal management units

3. Olsen et al 2014 Mol Ecol

4. Baltic harbour seals mtDNA

5. Gråsælen Grey seal population structure

6. mtDNA – 226 modern + 50 historic samples – 435 bp control region Microsatellites – 79 modern samples – 14 loci;

7. SCOTLAND WADDEN SEA LÆSØ RØDSAND FALSTERBO CHR.Ø SCOTLAND WADDEN SEA RØDSAND FALSTERBO CHR.Ø

8. Grey seal genetic diversity Danish historic (54) North Sea modern (71) Baltic modern (142)

9. Grey seal finds (15000-3000 BP) Sommer and Benecke 2003

10. Grey seal finds (3000-500 BP) Sommer and Benecke 2003

11. Grey Harbour Ringed Porpoise ? ?

12. Changes in species composition (DK)

13. Future studies Combined genetic analysis of harbour, grey and ringed seal, and porpoise Population structure and divergence times – Geological events – Climate events – Environmental factors – Historic abundance and distribution Existing mtDNA and microsatellite data Genomic data and ancient DNA