Realm: Terrestrial
Climate: Temperate
Biome: Tundra
Central latitude: 65.968055
Central longitude: 16.316660
Duration: 37 years, from 1963 to 1999

636 records

35 distinct species

Across the time series Fringilla montifringilla is the most frequently occurring species

Methods

Appendix 2.Densities of the passerine species (excl. Corvidae) (territories/km2) as obtained by mapping ornest search in the study plots in the rich subalpine birch forests on the south-facing slopes of the mountainsGaisatj and Valle near Ammarn?s Swedish Lapland Two methods have been applied: 1) territorial mapping in restricted study plots of known size and 2) linetransects traversing the whole study area. The Turdus speciesespecially the colonial ones are more difficult to map and have therefore been censused by nest counts. Abundance values have been combinedwith the density of the bird community as obtainedfrom the study plots resulting in a so-called deriveddensity index for each species. Ground data Unit of abundance = IndCountInt, Unit of biomass = NA

Citation(s)

Enemar, A., Sjöstrand, B. E., Andersson, G. Ö. & von Proschwitz, T. (2004) The 37-year dynamics of a subalpine passerine bird community, with special emphasis on the influence of environmental temperature and Epirrita autumnata cycles. Ornis Svecica, 14, 63–106.