An overview of monitoring for raptors in Finland

Open access

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

Francis, C.M. & Saurola, P. (2008): Estimating demographic parameters from complex data sets: a comparison of Bayesian hierarchical and maximumlikelihood methods for estimating survival probabilities of Tawny Owls, Strix aluco in Finland. pp. 619-640 In: Thomson, D.L., Cooch, E.G. & Conroy, M.J. (eds.): Modelling Demographic Processes in Marked Populations. Environmental and Ecological Statistics, Vol. 3. - Springer, New York.

Helander, B., Bignert, A. & Asplund, L. (2008): Using Raptors as Environmental Sentinels: Monitoring the White-tailed Sea Eagle Haliaeetus albicilla in Sweden. - Ambio 37 (6): 425-431.

Henny, C.J., Grove, J.L. Kaiser, J.L. & Johnson, B.L. (2010): North American Osprey populations and contaminants: historic and contemporary perspectives. - Journal of Toxicology and Environmental Health, Part B 13 (7/8): 579-603.

Honkala, J., Bjorklund, H. & Saurola, P. (2010): [Breeding and population trends of common raptors and owls in Finland in 2009.] - Linnut-vuosikirja 2009: 78-89. (in Finnish, English summary)

Honkala, J., Saurola, P. & Valkama, J. (2011): [Breeding and population trends of common raptors and owls in Finland in 2010.] - Linnut-vuosikirja 2010: 53-63. (in Finnish, English summary)

Honkala, J., Saurola, P. & Valkama, J. (2012): [Breeding and population trends of common raptors and owls in Finland in 2011.] - Linnut-vuosikirja 2011: 58-69. (in Finnish, English summary)

Korpimaki, E. & Hakkarainen, H. (2012): The Boreal Owl. Ecology, Behaviour and Conservation of a Forest- Dwelling Predator. - Cambridge University Press, New York.

Koskimies, P. & Lapshin, N.V. (eds.) (2006): Status of Raptor Populations in Eastern Fennoscandia. Proceedings of the Workshop, 8-10 November 2005, Kostomuksha, Karelia, Russia. - Karelian Research Centre of the Russian Academy of Science & Finnish-Russian Working Group on Nature Conservation, Petrozavodsk, Russia.

Koskimies, P. & Ollila, T. (2009): [The conservation status of the Gyrfalcon Falco rusticolus in Finland.] - Linnutvuosikirja 2008: 7-13. (in Finnish, English summary)

Lehikoinen, A., Ekroos, J., Jaatinen, K., Lehikoinen, P., Linden, A., Piha, M., Vattulainen, A. & Vahatalo, A. (2008): [Bird population trends based on the data of Hanko Bird Observatory (Finland) during 1979-2007.] - Tringa 35: 146-209. (in Finnish, English summary)

Lehikoinen, A., Hokkanen, T. & Lokki, H. (2011): Young and female-biased irruptions in Pygmy Owls Glaucidium passerinum in southern Finland. - Journal of Avian Biology 42 (6): 564-569.

Newton, I. (1979): Population ecology of raptors. - T & A D Poyser, Berkhamsted.

Ollila, T. (2012): Finnish Golden Eagles (Aquila chrysaetos) in 2011. - Linnut-vuosikirja 2011: 12-15. (in Finnish, English summary)

Ollila, T. & Koskimies, P. (2008): [The conservation status of the Golden Eagle and Peregrine Falcon in Finland.] - Linnut-vuosikirja 2007: 8-17. (in Finnish, English summary)

Rassi, P., Hyvarinen, E., Juslen, A. & Mannerkoski, I. (eds.) (2010): The 2010 Red List of Finnish Species. - Ymparistoministerio & Suomen ymparistokeskus, Helsinki.

Saurola, P. (1976): Finnish raptor censuses. - Ornis Fennica 53 (4): 135-179.

Saurola, P. (1980): Finnish Project Pandion. - Acta Ornithologica 17 (13): 161-168.

Saurola, P. (1985a): The Raptor Grid: an attempt to monitor Finnish raptors and owls. - Var Fagelvard, Suppl. 11: 187-190.

Saurola, P. (1985b): Persecution of raptors in Europe assessed by Finnish and Swedish ring recovery data. - ICBP Technical Publications 5: 439-448.

Saurola, P. (1997): The Osprey (Pandion haliaetus) and modern forestry: a review of population trends and their causes in Europe. - Journal of Raptor Research 31 (2): 129-137.

Saurola, P. (2006): Monitoring “Common” Birds of Prey in Finland in 1982-2005. pp. 133-145 In: Koskimies, P. & Lapshin, N.V. (eds.): Status of Raptor Populations in Eastern Fennoscandia. Proceedings of the Workshop, 8-10 November 2005, Kostomuksha, Karelia, Russia. - Karelian Research Centre of the Russian Academy of Science & Finnish-Russian Working Group on Nature Conservation, Petrozavodsk, Russia.

Saurola, P (2008): Monitoring birds of prey in Finland: a summary of methods, trends, and statistical power. - Ambio 37 (6): 413-419.

Saurola, P. (2009): Bad news and good news: population changes of Finnish owls during 1982-2007. - Ardea 97 (4): 469-482.

Saurola, P. (2011): [Finnish Ospreys (Pandion haliaetus) 2010.] - Linnut-vuosikirja 2010: 29-35. (in Finnish, English summary)

Saurola, P. (2012): [Finnish Ospreys (Pandion haliaetus) 2011.] - Linnut-vuosikirja 2011: 16-23. (in Finnish, English summary)

Saurola, P & Bjorklund, H. (2011): Losers and winners among Finnish forest dwelling birds of prey. pp. 56-69 In: Zuberogoitia, I. & Martinez, J.E. (eds.): Ecology and conservation of European forest-dwelling raptors. - Departamento de Agricultura de la Diputacion Foral de Bizkaia.

Saurola, P., Stjernberg, T., Hogmander, J., Koivusaari, J., Ekblom, H. & Helander, B. (2003): Survival of juvenile and sub-adult Finnish White-tailed Sea Eagles in 1991-1999: a preliminary analysis based on resightings of colour-ringed individuals. pp. 155-167 In: Helander, B., Marquiss, M. & Bauerman, B. (eds.): Sea Eagle 2000. Proceedings from the international conference, 13-17 September 2000, Bjorko, Sweden. - Swedish Ornithological Society, Stockholm.

Saurola, P., Valkama, J. & Velmala, W. (2013): [The Finnish Bird Ringing Atlas. Vol. I.] - Finnish Museum of Natural History & Ministry of Environment, Helsinki. (in Finnish, extensive English summary) Sergio, F., Newton, I., Marchesi, L. & Pedrini, P. (2006): Ecologically justified charisma: preservation of top predators delivers biodiversity conservation. - Journal of Applied Ecology 43 (6): 1049-1055.

Stefansson, O. (1997): [Vagabond of the northern forest. Great Grey Owl (Strix nebulosa lapponica).] - Boden. (in Swedish, English summary) Stjernberg, T., Koivusaari, J., Hogmander, J., Nuuja, I. & Lokki, H. (2011): [Population size and nesting success of the White-tailed Sea Eagle (Haliaetus albicilla) in Finland 2009-2010.] - Linnut-vuosikirja 2010: 19-27. (in Finnish, English summary)

Sulkava, S. (1964): [To the feeding biology of the Goshawk, Accipiter g. gentilis.] - Aquilo Ser. Zoologica 3: 1-103. (in German)

Valkama, J. & Korpimaki, E. (1999): Nestbox characteristics, habitat quality and reproductive success of Eurasian Kestrels. - Bird Study 46 (1): 81-88.

Valkama, J. & Saurola, P. (2005): Mortality factors and population trends of the Eagle Owl Bubo bubo in Finland. - Ornithologischer Anzeiger 44 (2): 81-90.

William S. (1979): Robust Locally Weighted Regression and Smoothing Scatterplots. - Journal of the American Statistical Association 74 (368): 829-836.

Acrocephalus

The Journal of Bird Watching and Bird Study Association of Slovenia - DOPPS Bird Life

Journal Information

CiteScore 2017: 0.21

SCImago Journal Rank (SJR) 2017: 0.112
Source Normalized Impact per Paper (SNIP) 2017: 0.268

Cited By

Metrics

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 103 103 20
PDF Downloads 41 41 9