Dataset 51
Fluctuations and long-term in the relative densities of tetraonid populations in Finland. 1964-77
Realm: Terrestrial
Climate: Temperate
Biome: Boreal forests/Taiga Central latitude: 61.924100
Central longitude: 25.748200
Duration: 14 years, from 1964 to 1977
Lindén, H. & Rajala, P. (1981) Fluctuations and long-term trends in the relative densities of tetraonid populations in Finland, 1964-77. Finnish Game Research, 39, 13-34.
Climate: Temperate
Biome: Boreal forests/Taiga Central latitude: 61.924100
Central longitude: 25.748200
Duration: 14 years, from 1964 to 1977
56 records
4 distinct species
Across the time series Bonasa bonasia is the most frequently occurring speciesMethods
The abundance of the tetraonid species in different parts of thecountry. the long-term population trends in respective areas and thedelimitation of areas in which the fluctuations of a single tetraonid species aresynchronous were studied. Route censuses of tetraonids give only relativedensities. because they are carried out in optimal grouse habitats. but thecensus results are suitable for the purposes mentioned above. Between 500and 800 route censuses are carried out annually; the total length of theseroutes has varied between 20.000 and 30.000 km annually. Unit of abundance = MeanCount, Unit of biomass = NACitation(s)
"Fluctuations and long-term trends in the relative densities of tetraonid populations in Finland, 1964-77." NERC Centre for Population Biology, Imperial College. The Global Population Dynamics Database v2.0. Available at: https://www.imperial.ac.uk/cpb/gpdd2/secure/register.aspx, accessed 2012.Lindén, H. & Rajala, P. (1981) Fluctuations and long-term trends in the relative densities of tetraonid populations in Finland, 1964-77. Finnish Game Research, 39, 13-34.
