Bird communities at two marshes in Øvre Forra, today and 40 years ago
DOI:
https://doi.org/10.15845/on.v38i0.890Sammendrag
In the protected area Øvre Forra in Central Norway, birds were surveyed at two marshes in two succeeding years at the beginning of the 1970s. By following the same survey procedure 40 years later in these unchanged marsh habitats, I sought changes in the breeding bird community. While the total number of waders seems to have been quite stable, the abundance of some of the involved species might have changed during this period of time. Due to low numbers, and annual variations, the implications for some of the involved species have to be taken cautiously. The most abundant species in Øvre Forra is now the Common Redshank Tringa totanus. This species has outnumbered the earlier most abundant species in this bird community, the Meadow Pipit Anthus pratensis. The numbers of the Meadow Pipit, Northern Lapwing Vanellus vanellus, European Golden Plover Pluvialis apricaria and Common Sandpiper Actitis hypoleucos all tend to be lower than for 40 years ago. The Common Gull Larus canus and two Tringa species, the Common Redshank T. totanus and Common Greenshank T. nebularia, seem to have increased in numbers, while the situation for the Common Snipe Gallinago gallinago and the Whimbrel Numenius phaeopus appears to be stable. The Ruff Calidris pugnax used to be a characteristic species on the Øvre Forra’s bogs in the 1970s, but has since vanished. Altogether, the study shows an apparently quite stable avifauna over the time span of 40 years in this environmentally stable reserve.Referanser
Bibby, C.J., Burness, N.D. & Hill, D.A. 1992. Bird census techniques. Academic Press, London.
BirdLife International. 2004. Birds in Europe: population estimates, trends and conservation status. BirdLife International, Cambridge.
BirdLife International. 2015. IUCN Red List for birds. http://www.birdlife.org on 02/2015.
Byrkjedal, I. & Kålås, J.A. 2012. Censuses of breeding birds in a South Norwegian arctic-alpine habitat three decades apart show population declines in the most common species. Ornis Norvegica 35: 43–47.
Enemar, A., Sjöstrand, B., Andersson, G., & Von-Proschwitz, T. 2004. The 37-year dynamics of a subalpine passerine bird community, with special emphasis on the influence of environmental temperature and Epirrita autumnata cycles. Ornis Svecica 14: 63–106.
Foppen, R. & Riejnen, R. 1996. The willow warbler Phylloscopus trochilus in trouble: Africa involved? Limosa 69: 51–56.
Fowler, J. & Cohen, L. 1990. Practical statistics for field biology. John Wiley & Sons, Chichester.
Green, M. & Lindström, Å. 2015. Övervakning av fåglarnas populationsutveckling. Årsrapport för 2014. Rapport, Biol. inst., Lunds Universitet: 1–86. (In Swedish with English summary)
Grund, L.-O. 2014. Myrfågelinventering i Älvdalens kommun under perioden 1977 til 2012. Länsstyrelsen Dalarne län Rapport 2014 (03). (In Swedish)
Hardeng, G. 2014. Fuglefaunaen på myrene Midtfjellmosen og Store Rekke i Aurskog-Høland, Akershus, i 1975–77 og i 2014. Fauna 67: 118–131. (In Norwegian with English summary)
Heggøy, O. & Øien, I.J. 2014. Vipa går en usikker framtid i møte. Vår Fuglefauna 37: 114–127. (In Norwegian with English summary)
Henriksen S. & Hilmo O. (eds.) 2015. Norsk rødliste for arter 2015. Artsdatabanken, Norge. (In Norwegian with English summary)
Hogstad, O. 2005. Numerical and functional responses of breeding passerine species to mass occurrence of geometrid caterpillars in a subalpine birch forest: A 30-year study. Ibis 147: 77–91.
Holmberg, T. 2012. Myrinventeringen. Fåglar i Jämtland-Härjedalen 32 (4): 9–11. (In Swedish)
Husby, M. & Stueflotten, S. 2009. Norsk hekkefugltaksering. Bestandsutvikling i HTF-områder for 57 arter 1995–2008. NOF Rapport 2009–6: 1–29 + vedlegg. (In Norwegian)
Kålås, J.A., Husby, M., Nilsen, E.B. & Vang, R. 2014. Bestandsvariasjoner for terrestriske fugler i Norge 1996–2013. NOF Rapport 2014–4: 1–36. (In Norwegian)
Ławicki, Ł., Wylegała, P., Batycki, A., Kajzer, Z., Guentzel, S., Jasiński, M., Kruszyk, R., Rubacha, S. & Żmihorski, M. 2011. Long-term decline of grassland waders in western Poland. Vogelwelt 132: 101–108.
Lindström, Å., Green, M., Husby, M., Kålås, J.A. & Lehikoinen, A. 2015. Large-scale monitoring of waders on their boreal and arctic breeding grounds in northern Europe. Ardea 103: 3–15.
Moen, A., Kjelvik, L., Bretten, S., Sivertsen, S. & Sæther, B. 1976. Vegetasjon og flora i Øvre Forradalsområdet i Nord-Trøndelag, med vegetasjonskart. K. norske Vidensk. Selsk. Mus. Rapport Bot. Ser.1976-9: 1–135 + 2 pl. (In Norwegian)
Moksnes, A. 1971. Ornitologiske undersøkelser i reguleringsområdet for de planlagte Forraverkene. Rapport Zool. inst., UNIT: 1–27. (In Norwegian)
Moksnes, A. 1973. Quantitative surveys of the breeding bird populations in some subalpine and alpine habitats in the Nedal area in Central Norway (1967–71). Norwegian Journal of Zoology 21: 113–118.
Moksnes, A. 1977. Fuglefaunaen i Forraområdet i Nord-Trøndelag. Sluttrapport undersøkelsene 1970–72. K. norske Vidensk. Selsk. Mus. Rapport Zool. Ser.1977–3: 1–56. (In Norwegian)
Ottvall, R., Edenius, L., Elmberg, J., Engström, H., Green, M., Holmqvist, N., Lindström, Å., Pärt, T. & Tjernberg, M. 2009. Population trends for Swedish breeding birds. Ornis Svecica 19: 117–192.
Peach, W., Baillie, S. & Underhill, L. 1991. Survival of British Sedge Warbler Acrocephalus schoenobaenus in relation to West African rainfall. Ibis 133: 300–305.
Svensson, S. 1978. Förenklad revirkarteringsmetod för inventering av fåglar på myrar och mossar. Vår Fågelvärld 37: 9–18. (In Swedish with English summary)
Svensson, S. & Andersson, T. 2013. Population trends of birds in alpine habitats at Ammarnäs in southern Swedish Lapland 1972–2011. Ornis Svecica 23: 81–107.
Thingstad, P.G. 2012. Oppfølging av verneområder: Status for fuglesamfunnet på myr i Øvre Forra naturreservat, Nord-Trøndelag. NTNU Vitenskapsmuseet Rapport Zoologisk serie 2012–2. (In Norwegian with English summary)
Thingstad, P.G., Hogstad, O. & Speed, J.D.M. 2015. The influence of climatic conditions in breeding grounds and migratory flyways on a subalpine Norwegian Willow Warbler Phylloscopus trochilus population. Ornis Fennica 92: 23–33.
Tucker, G.M. & Heath, M.F. 1994. Birds in Europe: their conservation status. BirdLife International, Cambridge.
Väisänen, R.A., Hario, M. & Saurola, P. 2011. Population estimates of Finnish birds. In: Valkama, J., Vepsäläinen, V. & Lehikoinen, A. (eds.). The Third Finnish Breeding Bird Atlas. Finnish Museum of Natural History and Ministry of Environment. http://atlas3.lintuatlas.fi/english ; ISBN 978–952–10–7145–4.
Wetlands International 2006. Waterbird Population Estimates. Fourth Edition. Wetlands International, Wageningen.
Wetlands International 2015. Waterbird Population Estimates. Retrieved from: wpe.wetlands.org. 10 Mar 2015.
Zwarts, L., Bijlsma, R.G., van der Kamp, J. & Wymenga, E. 2010. Living on the edge: Wetlands and birds in a changing Sahel. 2nd ed. KNNV Publ., Zeist.
Østnes, J.E. & Kroglund, R.T. 2010. Kartlegging av spillplasser for dobbeltbekkasin (Gallinago media) i Nord-Trøndelag. Høgskolen i Nord-Trøndelag. Utredning 116. (In Norwegian with English abstract)
Østnes, J.E. & Kroglund, R.T. 2014. Bestandsstatus for brushane (Philomachus pugnax) i Nord-Trøndelag. Høgskolen i Nord-Trøndelag. Utredning 160. (In Norwegian with English abstract)
Nedlastinger
Publisert
Hvordan referere
Utgave
Seksjon
Lisens
For artikler publisert før september 2020, gjelder følgende vilkår: https://boap.uib.no/index.php/ornis/copyright
