ISSN 0003-455X
© Finnish Zoological and Botanical Publishing Board 1989

Contents of Volume 26 Number 3, 1989

Koskimies, P. 1989: Birds as a tool in environmental monitoring. — Annales Zoologici Fennici 26: 153–166.
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Väisänen, R. A. 1989: Renewal of methodology in the second bird atlas of Finland, 1986–89. — Annales Zoologici Fennici 26: 167–172.
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Haila, Y., Hanski, I. K. & Raivio, S. 1989: Methodology for studying the minimum habitat requirements of forest birds. — Annales Zoologici Fennici 26: 173–180.
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Peterhofs, E. & Priednieks, J. 1989: Problems of applying the line-transect method without repeated counts when the breeding season is long. — Annales Zoologici Fennici 26: 181–184.
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Hildén, O. & Järvinen, A. 1989: Efficiency of the line-transect method in mountsin birch forest. — Annales Zoologici Fennici 26: 185–190.
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Verner, J. & Milne, K. A. 1989: Coping with sources of variability when monitoring population trends. — Annales Zoologici Fennici 26: 191–199.
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Koskimies, P. & Pöysä, H. 1989: Waterfowl censusing in environmental monitoring: a comparison between point and round counts. — Annales Zoologici Fennici 26: 201–206.
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Massa, R. & Fedrigo, A. 1989: A new approach for compiling a winter bird atlas by means of point-counts. — Annales Zoologici Fennici 26: 207–212.
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Hanski, I. & Tiainen, J. 1989: Bird ecology and Taylor’s variance-mean regression. — Annales Zoologici Fennici 26: 213–217.
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Lack, P. C. 1989: Overall and regional trends in warbler populations of British farmland over 25 years. — Annales Zoologici Fennici 26: 219–225.
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Petty, S. J. 1989: Productivity and density of tawny owls Strix aluco in relation to the structure of a spruce forest in Britain. — Annales Zoologici Fennici 26: 227–233.
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Tomialojc, L. & Lontkowski, J. 1989: A technique for censusing territorial song thrushes Turdus philomelos. — Annales Zoologici Fennici 26: 235–244.
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Orell, M. 1989: Reliability of local breeding records in estimating regional population fluctuations of Parus species. — Annales Zoologici Fennici 26: 245–254.
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Flousek, J. 1989: Impact of industrial emissions on bird populations breeding in mountain spruce forests in Central Europe. — Annales Zoologici Fennici 26: 255–263.
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Fuller, R. J., Stuttard, P. & Ray, C. M. 1989: The distribution of breeding songbirds within mixed coppiced woodland in Kent, England, in relation to vegetation age and structure. — Annales Zoologici Fennici 26: 265–275.
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Virkkala, R. 1989: Short-term fluctuations of bird communities and populations in virgin and managed forests in Northern Finland. — Annales Zoologici Fennici 26: 277–285.
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Pina, J. P. 1989: Breeding bird assemblages in eucalyptus plantations in Portugal. — Annales Zoologici Fennici 26: 287–290.
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Fedrigo, A., Fornasari, L., Bonaventura, O., Vigorita, V. & Massa, R. 1989: The winter bird species and their abundance in Lombardy, Northern Italy. — Annales Zoologici Fennici 26: 291–295.
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Robbins, C. S., Droege, S. & Sauer, J. R. 1989: Monitoring bird populations with Breeding Bird Survey and atlas data. — Annales Zoologici Fennici 26: 297–304.
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Welsh, D. A. 1989: A report on breeding bird atlases in Canada. — Annales Zoologici Fennici 26: 305–308.
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Pomeroy, D. E. 1989: Using East African bird atlas data for ecological studies. — Annales Zoologici Fennici 26: 309–314.
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Raivio, S. 1989: R-mode analysis of taiga bird distributions: comparison between qualitative and quantitative data. — Annales Zoologici Fennici 26: 315–322.
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Mönkkönen, M. & Helle, P. 1989: Migratory habits of birds breeding in different stages of forest succession: a comparison between the Palaearctic and the Nearctic. — Annales Zoologici Fennici 26: 323–330.
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