An overview of monitoring for raptors in Finland
Abstract In Finland, population monitoring for both diurnal and nocturnal raptors has been almost entirely based on fieldwork carried out by voluntary raptor ringers. Responsible organisations include the Finnish Museum of Natural History, with economic support for administration from the Ministry o...
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Walter de Gruyter GmbH
2012
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crdegruyter:10.2478/v10100-012-0007-7 2024-05-19T07:39:59+00:00 An overview of monitoring for raptors in Finland Saurola, Pertti 2012 http://dx.doi.org/10.2478/v10100-012-0007-7 http://content.sciendo.com/view/journals/acro/33/154-155/article-p203.xml https://www.sciendo.com/pdf/10.2478/v10100-012-0007-7 en eng Walter de Gruyter GmbH http://creativecommons.org/licenses/by-nc-nd/3.0/ Acrocephalus volume 33, issue 154-155, page 203-215 ISSN 0351-2851 journal-article 2012 crdegruyter https://doi.org/10.2478/v10100-012-0007-7 2024-05-02T06:51:59Z Abstract In Finland, population monitoring for both diurnal and nocturnal raptors has been almost entirely based on fieldwork carried out by voluntary raptor ringers. Responsible organisations include the Finnish Museum of Natural History, with economic support for administration from the Ministry of Environment, “Metsahallitus” (former National Board of Forestry) and WWF Finland. Since the early 1970s, numbers and productivity of four endangered species, the White-tailed Eagle Haliaeetus albicilla, Golden Eagle Aquila chrysaetos, Osprey Pandion haliaetus and Peregrine Falcon Falco peregrinus have been monitored by country-wide Comprehensive Surveys, with the aim of checking all known nest sites of these species every year. The Gyrfalcon F. rusticolus was included in this group in the late 1990s. Data for monitoring the populations of the other raptor species have been gathered by the Raptor Grid and Raptor Questionnaire projects. The Raptor Grid project produces annual population indices, which are calculated from the data collected from 10 × 10 km study plots (n = ca. 130/year) and quite well reflect the annual population fluctuations and longterm trends of seven common species of diurnal and six species of nocturnal raptors breeding in the southern part of Finland. For the rest of the species, which are either rare all over Finland or breed mostly in the north, outside the good coverage of the distribution of Raptor Grid study plots, conclusions on population changes are based on the total numbers of occupied territories and active nests reported annually by the Raptor Questionnaires Article in Journal/Newspaper Falco peregrinus gyrfalcon Haliaeetus albicilla peregrine falcon White-tailed eagle Aquila chrysaetos golden eagle Pandion haliaetus De Gruyter Acrocephalus 33 154-155 203 215 |
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Abstract In Finland, population monitoring for both diurnal and nocturnal raptors has been almost entirely based on fieldwork carried out by voluntary raptor ringers. Responsible organisations include the Finnish Museum of Natural History, with economic support for administration from the Ministry of Environment, “Metsahallitus” (former National Board of Forestry) and WWF Finland. Since the early 1970s, numbers and productivity of four endangered species, the White-tailed Eagle Haliaeetus albicilla, Golden Eagle Aquila chrysaetos, Osprey Pandion haliaetus and Peregrine Falcon Falco peregrinus have been monitored by country-wide Comprehensive Surveys, with the aim of checking all known nest sites of these species every year. The Gyrfalcon F. rusticolus was included in this group in the late 1990s. Data for monitoring the populations of the other raptor species have been gathered by the Raptor Grid and Raptor Questionnaire projects. The Raptor Grid project produces annual population indices, which are calculated from the data collected from 10 × 10 km study plots (n = ca. 130/year) and quite well reflect the annual population fluctuations and longterm trends of seven common species of diurnal and six species of nocturnal raptors breeding in the southern part of Finland. For the rest of the species, which are either rare all over Finland or breed mostly in the north, outside the good coverage of the distribution of Raptor Grid study plots, conclusions on population changes are based on the total numbers of occupied territories and active nests reported annually by the Raptor Questionnaires |
format |
Article in Journal/Newspaper |
author |
Saurola, Pertti |
spellingShingle |
Saurola, Pertti An overview of monitoring for raptors in Finland |
author_facet |
Saurola, Pertti |
author_sort |
Saurola, Pertti |
title |
An overview of monitoring for raptors in Finland |
title_short |
An overview of monitoring for raptors in Finland |
title_full |
An overview of monitoring for raptors in Finland |
title_fullStr |
An overview of monitoring for raptors in Finland |
title_full_unstemmed |
An overview of monitoring for raptors in Finland |
title_sort |
overview of monitoring for raptors in finland |
publisher |
Walter de Gruyter GmbH |
publishDate |
2012 |
url |
http://dx.doi.org/10.2478/v10100-012-0007-7 http://content.sciendo.com/view/journals/acro/33/154-155/article-p203.xml https://www.sciendo.com/pdf/10.2478/v10100-012-0007-7 |
genre |
Falco peregrinus gyrfalcon Haliaeetus albicilla peregrine falcon White-tailed eagle Aquila chrysaetos golden eagle Pandion haliaetus |
genre_facet |
Falco peregrinus gyrfalcon Haliaeetus albicilla peregrine falcon White-tailed eagle Aquila chrysaetos golden eagle Pandion haliaetus |
op_source |
Acrocephalus volume 33, issue 154-155, page 203-215 ISSN 0351-2851 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/3.0/ |
op_doi |
https://doi.org/10.2478/v10100-012-0007-7 |
container_title |
Acrocephalus |
container_volume |
33 |
container_issue |
154-155 |
container_start_page |
203 |
op_container_end_page |
215 |
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1799479565111787520 |