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RESPONDENT
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Pertti Koskimies
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SITE NAME
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Finnish Lapland, Finland
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| Contact details
(phone/fax//e-mail//address): |
| +358 9 8135 946(phone,fax)/mbl. +358 40 7216 764 // pertti.koskimies@kolumbus.fi // Vanha Myllylammentie 88, FIN-02400 Kirkkonummi, Finland
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PROJECT DETAILS |
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Project name:
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Gyrfalcons and Willow Grouses in Finland
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Start of survey:
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End
of survey: |
Team
size: |
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WEATHER
CONDITIONS
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| Date of ice-break on
rivers: |
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| Date of final loss of
snow: |
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BIOTIC
CONDITIONS
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| Rodents abundance evaluation: |
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Breeding conditions:
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The number of occupied Gyrfalcon territories was 23 in Finland in 2005. Effective monitoring and wardening by Pertti Koskimies and personnel of Metsahallitus (the governmental body responsible for threatened species in Lapland) has covered all nest-sites of the species during recent years. Of these pairs 13 nested successfully, raising, on average, 3.0 young per pair, or 1.7 young per occupied territory. The number of successful pairs, and the number of young, declined from the peak year 2004. Many pairs failed especially in western Lapland due to heavy snow storms during incubation, and population decline of the Willow Grouse.
In addition, over 10 Gyrfalcon pairs have been monitored by Finnish specialists in northernmost Sweden and northeasternmost Norway, in connection to the Swedish and Norwegian monitoring projects. The whole Gyrfalcon populations in northern Sweden, Norway and Finland are nowadays under effective and coordinated monitoring, and special research projects on the conservation biology of the species are under way.
Willow Grouse populations have been exceptionally high from 2002 to 2004 in most parts of Finnish Lapland, but in 2005 they declined by 30% according to censuses by Finnish Game and Fisheries Research Institute (project led by Dr. Pekka Helle). In August censuses of 2005, the mean density was 3.5 individuals/km2. The proportion of young birds was 65%, and the mean brood size 5.3.
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Rodent dynamics:
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Rodent species recorded:
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Summary
of fauna studies: |
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