Sökning: "Cyprinids"

Hittade 3 avhandlingar innehållade ordet Cyprinids.

1. 1. Paleolimnological reconstructions of fish population changes in acidified lakes

   Författare :Fredrik Palm; Göteborgs universitet; []
   Nyckelord :Acidification; Chaoborus; C. flavicans; C. obscuripes; Cyprinids; Daphnia; Fish loss; Fish community composition; Ephippia; Fragmentation; Mandibles; Perch; Roach; Sediments; 210-Pb chronology;

   Sammanfattning : This thesis deals with the potential of using subfossil Chaoborus spp. and Daphnia spp. remains preserved in lake sediments to reveal past fish community alterations related to progressive acidification. LÄS MER

3. 2. Seasonal partial migration of cyprinids - Causes and consequences

   Författare :Jakob Brodersen; Enhet akvatisk ekologi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Partial migration is a common phenomenon in animals but has mostly been studied in birds. However, partial migration of cyprinid fish from lakes into streams during winter is a wide-spread phenomenon. LÄS MER

4. 3. Biodiversity in Swedish Cyprinid Fish: Insights Into Processes of Divergence

   Författare :Marnie H Demandt; Mats Björklund; Erik Petersson; Brent Emerson; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; speciation; hybridization; bottleneck; genetic drift; phylogeny; speciation rates; common bream; white bream; roach; Swedish cyprinid fish; Cyprinidae; Biology; Biologi;

   Sammanfattning : Uncovering and understanding the processes that have led to the biological diversity we observe today are of fundamental interest in biology. Since direct observation of speciation is usually impossible, knowledge about the processes behind species formation can be gathered by studying mutations, natural/sexual selection, and genetic drift. LÄS MER