Avancerad sökning

Hittade 3 uppsatser som matchar ovanstående sökkriterier.

1. 1. Genetic diversity and hardiness in Scots pine from Scandinavia to Russia

   Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

   Författare :Jenny Olsson; [2019]
   Nyckelord :Pinus sylvestris; recolonization history; genetic diversity; cold hardiness; clinal variation;

   Sammanfattning : The postglacial recolonization of northern Europe supposedly originated from Western Europe and the Russian Plain, however, recent molecular and macrofossil-based investigations suggest that the history may be more complex than previously thought. This study aims to investigate the genetic diversity and population structure of Scots pine from Scandinavia to Russia to re-evaluate its recolonization history, and to examine whether the pattern of spatial genetic diversity has any adaptive significance. LÄS MER

3. 2. Biogeography of Norway spruce (Picea abies (L.) Karst.) : Insights from a genome-wide study

   Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

   Författare :Zandra Fagernäs; [2017]
   Nyckelord :Genetic diversity; genotyping-by-sequencing; Picea abies; population structure; postglacial migration;

   Sammanfattning : Norway spruce (Picea abies (L.) Karst.) together with the sister species Siberian spruce (P. obovata Ledeb. LÄS MER

4. 3. Retention of nitrogen in beaver ponds depends on colonization history : use of Fontinalis antipyretica as an integrative sampler of nitrogen

   Kandidat-uppsats, SLU/Dept. of Aquatic Sciences and Assessment

   Författare :Anders Johansson; [2015]
   Nyckelord :beaver; ; castor fiber; colonization history; fontinalis antipyretica; nitrogen retention; nitrogen; recolonization; Sweden;

   Sammanfattning : Beaver ponds affect the environment in many ways and beaver ponds have the potential to retain macronutrients. The retention of nitrogen in beaver ponds has mainly been suggested to be due to denitrification by bacteria. LÄS MER