Sökning: "Baltic grey seal"

Visar resultat 1 - 5 av 14 avhandlingar innehållade orden Baltic grey seal.

1. 1. Ancient genomics of Baltic seals : Insights on the past Baltic grey seal and harp seal populations

   Författare :Maiken Hemme Bro-Jørgensen; Kerstin Lidén; Morten Tange Olsen; Aikaterini Glykou; Olle Karlsson; Stockholms universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; Ancient DNA; Baltic Sea; DNA preservation; extinction; mitogenome; seal hunting; sex identification; arkeologi med inriktning mot laborativ arkeologi; Scientific Archaeology;

   Sammanfattning : This thesis aims to study and describe the ancient populations of grey and harp seals in the Baltic Sea, and to present new methodological approaches for general use in ancient DNA studies.The dissertation is comprised of five studies: a review of the use of paleogenetics in studying ancient human-marine mammal interactions; a method paper investigating patterns of DNA preservation in ancient pinniped samples; a method paper presenting a genetic sex identification method for ancient pinnipeds; a population genomic study of the Baltic grey seal; and a population genomic study of the now extinct Baltic harp seal. LÄS MER

3. 2. Reading bones : Stone Age hunters and seals in the Baltic

   Författare :Jan Storå; Jan Ekman; Stockholms universitet; []
   Nyckelord :Epiphyseal fusion; Harp seal; Marine mammals; Neolithic; Pitted Ware culture; Ringed seal; Seal hunting; Seasonality; Taphonomy; arkeologi; Archaeology;

   Sammanfattning : This is a study of hunters and seals in the Stone Age in the Baltic. The ambition has been to develop and utilize methods for osteological analyses of archaeological seal bones. The main aims of the zooarchaeological analyses have been to study seal hunting strategies and the formation processes of the faunal remains. LÄS MER

4. 3. Assessment of dietary patterns and prey consumption of marine mammals: Grey seals (Halichoerus grypus) in the Baltic Sea

   Författare :Karl Lundström; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; grey seal; Halichoerus grypus; Baltic Sea; diet; predation; fish; consumption; fatty acid signature analysis; bioenergetics; foraging ecology;

   Sammanfattning : The Baltic Sea has been severely affected by pollution and resource overexploitation during the last centuries. The grey seal (Halichoerus grypus) is a good example of how a species can be affected by such changes. LÄS MER

5. 4. Hydroxylated polybrominat­ed diphenyl ethers in Baltic Sea biota : Natural production, food web distribution and biotransformation

   Författare :Dennis Lindqvist; Lillemor Asplund; Walter Vetter; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; OH-PBDEs; Baltic Sea; Biosynthesis; Environmental fate; Wildlife exposure; Metabolism; Analytical methods; Ceramium tenuicorne; Blue mussel; Gammarus spp.; Stickleback; Perch; Grey Seal; miljökemi; Environmental Chemistry;

   Sammanfattning : Hydroxylated polybrominated diphenyl ethers (OH-PBDEs) are naturally produced in aquatic ecosystems e.g. by algae. Many OH-PBDEs have been observed to be highly bioactive and to cause adverse effects through several pathways, e. LÄS MER

7. 5. Prehistoric human impact on wild mammalian populations in Scandinavia

   Författare :Hans Ahlgren; Kerstin Lidén; Anders Angerbjörn; Anders Götherström; Gørill Nilsen; Stockholms universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; hunter-gatherers; Baltic Sea; Mesolithic period; grey seal; harp seal; mountain hare; moose; ancient DNA; hunting; translocation; arkeologi med inriktning mot laborativ arkeologi; Scientific Archaeology;

   Sammanfattning : This thesis aims to study the interactions of pre-agricultural societies in Scandinavia with wild mammals, for example in terms of hunting and translocation. More specifically, the aim is to investigate the possibility of identifying examples of overexploitation, targeted hunting or translocation of wild mammals in prehistoric Scandinavia, and to discuss the implications this could have had for both the wild animals and the humans. LÄS MER