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Gyrfalcon predation on ptarmigan: numerical and functional responses
Summary 1. Gyrfalcon predation on ptarmigan during the breeding season was studied in north-east Iceland 1981–97. The ptarmigan population went through a complete 10-year cycle of numbers with aExpand
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Seasonal changes in food habits of Gyrfalcons in NE-Iceland
Food habits of three subpopulations of the Gyrfalcon Falco rusticolus were studied in coastal, lakeland and heathland habitats of NE-Iceland by analysis of 2,316 pellets collected from FebruaryExpand
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Population fluctuations of gyrfalcon and rock ptarmigan: analysis of export figures from Iceland
We analysed harvest data for gyrfalcon Falco rusticolus and rock ptarmigan Lagopus mutus from Iceland with respect to regularity in fluctuations of numbers. The gyrfalcon data concerned live trappedExpand
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Population cycles in rock ptarmigan Lagopus muta: modelling and parameter estimation
We have modelled population change of rock ptarmigan using data from spring censuses and age ratios (spring and late summer) from a study area in north-east Iceland 1981 – 2004. Modelling ofExpand
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Rock Ptarmigan censuses in Northeast Iceland 1981 to 1994
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Feather mites (Astigmata: Psoroptidia) parasitising the rock ptarmigan Lagopus muta (Montin) (Aves: Galliformes) in Iceland
Four new species of feather mites are described from the Icelandic rock ptarmigan Lagopus muta islandorum (Faber) in Iceland. These are Metamicrolichus islandicus n. sp., Myialges borealis n. sp.Expand
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The Parasite Fauna of Rock Ptarmigan (Lagopus muta) in Iceland: Prevalence, Intensity, and Distribution Within the Host Population
Abstract One hundred rock ptarmigan (Lagopus muta), including 30 each of juvenile males and females, and 20 each of adult males and females, were collected in October 2006 in northeast Iceland toExpand
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Detection of a changepoint, a mean-shift accompanied with a trend change, in short time-series with autocorrelation
A changepoint model, which can detect either a mean shift or a trend change when accounting for autocorrelation in short time-series, was investigated with simulations and a new method is proposed. Expand
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