Sökning: "Larus canus"

Hittade 2 avhandlingar innehållade orden Larus canus.

1. 1. Life History of the Common Gull (Larus canus) : A Long-Term Individual-Based Study

   Författare :Kalev Rattiste; Mats Björklund; Jon E Brommer; Jan-Åke Nilsson; Uppsala universitet; []
   Nyckelord :Ecology; longitudinal studies; reproductive success; survival; pair bond; indicator trait; breeding time; heritability; selection; Ekologi; Larus canus; ekologisk botanik; Ecological Botany;

   Sammanfattning : An individual’s life history is a sequence of events which eventually determine its contribution to the next generation, or fitness. These events are affected by environmental factors, genetic make-up and decisions made by an individual and its breeding partner. LÄS MER

3. 2. Temporal relationships between fish-eating birds and their prey in a north Swedish river

   Författare :Kjell Sjöberg; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Seasonal and diel activity; food consumption; predator-prey relationships; fish-eating birds; anadromous fish; Mergus merganser; M. serrator; Sterna spp.; Larus spp.; Lampetra fluviatilis; Gasterosteus aculeatus;

   Sammanfattning : The seasonal and diel feeding habits of the goosander, Mergus merganser, the red-breasted merganser, M. serrator, gulls (Larus canus, L. argentatus and L. fuscusj and terns, Sterna hirundo/paradisaea were studied at 64V05'N. LÄS MER