Fluctuations in microtine populations in an island area in northern Norway 1958-1981

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Svein Myrberget

Abstract

On the small marine island of Tranøy, in Troms county, populations of field vole (Microtus agrestis) peaked in 1959, 1962, 1966, 1970 and 1974, showing a 3 – 4-year cycle largely parallel with microtine cycles in the vicinity. The 1978 peak found in many other areas was not, however, apparent on Tranøy, nor on many parts of the large island of Senja situated close to Tranøy. Norwegian lemmings (Lemmus lemmus) do not usually occur on Tranøy, but in late autumn 1969 a great many reached the area, probably from Senja. Some lemmings bred in 1970, and then disappeared.

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How to Cite
Myrberget, S. (1982). Fluctuations in microtine populations in an island area in northern Norway 1958-1981. Fauna Norvegica, 3, 7-11. https://doi.org/10.5324/fn.v3i0.6138
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