Sökning: "relict populations"
Hittade 4 avhandlingar innehållade orden relict populations.
1. Investigating genetic factors behind the decline of a threatened plant species – Tephroseris integrifolia (Asteraceae)
Sammanfattning : Landscape change in Europe has caused the decline of many grassland species. Tephroseris integrifolia (Asteraceae) is one species which has declined rapidly in Sweden since the 19th century. LÄS MER
2. Conservation of relict sand lizard (Lacerta agilis L.) populations on inland dune areas in central Sweden
Sammanfattning : .... LÄS MER
3. Population Dynamics and Conservation of the Sand Lizard (Lacerta agilis) on the Edge of its Range
Sammanfattning : The sand lizard (Lacerta agilis) reaches the northern periphery of its distribution in south-central Sweden, where small, isolated relict populations occur in pine heath forests on sandy sediments. Modern forestry and fire suppression have reduced the amount of suitable open habitat for the species in this area and seem to be important for its decline. LÄS MER
4. Population size and genetic diversity of Nigerian lions (Panthera leo)
Sammanfattning : High growth rate in human populations, agricultural developments and industrialization have impinged negatively on the natural habitats of most large carnivores, causing fragmentation, isolation and consequently reduction in population size. Lions (Panthera leo) that once roamed most parts of Southern Europe, Asia, the Middle East, North America, northern part of South America and most parts of Africa are today found only in parts of sub-Saharan Africa and at a single site in India. LÄS MER