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Studier av habitatval och revirstrukturer hos vassångare (Locustella luscinioides) i Tåkern
Linköpings universitet, Institutionen för fysik, kemi och biologi. Linköpings universitet, Tekniska högskolan.
2012 (svensk)Independent thesis Basic level (degree of Bachelor), 10,5 poäng / 16 hpOppgaveAlternativ tittel
Studies on habitat preferences and territory structures of the Savi's Warbler (Locustella luscinioides) in Lake Tåkern (engelsk)
Abstract [en]

The Savi’s Warbler (Locustella luscinioides) is a recently established bird species in a few reedy shallow lakes of southern Sweden and has only been found nesting for the last twenty years. Little is known about the species' habitat preferences, breeding biology and demands for specific territory structures at breeding sites in Sweden. Knowledge of a newly established species’ habitat requirements is essential to maintain a viable population and design action plans. This study, the first of its kind in Sweden, examined the vegetation structures in occupied territories of Savi’s Warblers at Lake Tåkern, the country's stronghold for the species. The species was found to be associated with the outer edge zones and fragmented areas of reed (Phragmites australis). Occupied territories differed from randomly chosen unoccupied (control) territories by having a thicker layer of reed litter, and on average more bushes of Willow (Salix spp.) present. Reed density and reed height did not differ from areas that lacked Savi’s Warblers. Territorial and displaying males were concentrated in two edge areas with a mosaic of reed islets where the territories remained relatively close together.

sted, utgiver, år, opplag, sider
2012. , s. 23
Emneord [en]
reed, territory structures, Locustella luscinioides, pseudoterritories, Willows, edge zones
Emneord [sv]
bladvass, revirstrukturer, Locustella luscinioides, pseudorevir, videbuskage, kantzoner
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-79179ISRN: LiTH-IFM-G-Ex--12/2652--SEOAI: oai:DiVA.org:liu-79179DiVA, id: diva2:538880
Fag / kurs
Ecology
Presentation
2012-05-31, A2, Linköping, 08:35 (svensk)
Uppsök
Life Earth Science
Veileder
Examiner
Tilgjengelig fra: 2012-08-06 Laget: 2012-07-02 Sist oppdatert: 2012-08-06bibliografisk kontrollert

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