Canopy cover and understory composition determine abundance of Vaccinium myrtillus L., a key plant for capercaillie (Tetrao urogallus), in subalpine forests in the Pyrenees

References

• Atlegrim O, Sjoberg K. 1996. Response of bilberry (Vaccinium myrtillus) to clear-cutting and single-tree selection harvests in uneven-aged boreal Picea abies forests. Forest Ecology and Management 86:39–50.
   Web of Science ®Google Scholar
• Baines D, Moss R, Dugan D. 2004. Capercaillie breeding success in relation to forest habitat and predator abundance. Journal of Applied Ecology 41:59–71.
   Web of Science ®Google Scholar
• Broome A, Connolly T, Quine CP. 2014. An evaluation of thinning to improve habitat for capercaillie (Tetrao urogallus). Forest Ecology and Management 314:94–103.
   Web of Science ®Google Scholar
• Campión D, Camprodon J, Novoa C, Guzmán D. 2011. Silvicultura. In: Canut J, García-Ferré D, Afonso I, editors. Manual de conservación y manejo del urogallo pirenaico. Dirección General de Medio Natural y Política Forestal, Ministerio de Medio Ambiente, Medio Rural y Marino. Madrid (Spain): Departament d’Agricultura, Ramaderia, Pesca, Alimentació i Medi Natural, Generalitat de Catalunya.
   Google Scholar
• Camprodon J. 2013. Ecologia i conservació dels ocells forestals. Un manual de gestió de la biodiversitat en boscos catalans. Solsona (Catalonia, Spain): Centre Tecnològic Forestal de Catalunya. Departament d’Agricultura, Ramaderia, Pesca, Alimentació i Medi Natural de la Generalitat de Catalunya. Available from: http://www.ctfc.cat/publicacions/#title
   Google Scholar
• Canham CD, Coates KD, Bartemucci P, Quaglia S. 1999. Measurement and modeling of spatially explicit variation in light transmission through interior cedar-hemlock forests of British Columbia. Canadian Journal of Forest Research 29:1775–1783.
   Web of Science ®Google Scholar
• Ceacero CJ, Diaz-Hernandez JL, del Campo AD, Navarro-Cerrillo RM. 2012. Interactions between soil gravel content and neighboring vegetation control management in oak seedling establishment success in mediterranean environments. Forest Ecology and Management 271:10–18.
   Web of Science ®Google Scholar
• Chávez V, Macdonald SE. 2010. The influence of canopy patch mosaics on understory plant community composition in boreal mixedwood forest. Forest Ecology and Management 259:1067–1075.
   Web of Science ®Google Scholar
• Coudun C, Gégout J-C. 2007. Quantitative prediction of the distribution and abundance of Vaccinium myrtillus with climatic and edaphic factors. Journal of Vegetation Science 18:517–524.
   Web of Science ®Google Scholar
• De Juana E, Garcia E. 2015. The birds of the Iberian Peninsula. London: Bloomsbury.
   Google Scholar
• Doche B, Franchini S, Pornon A, Lemperiere G. 2005. Changes of humus features along with a successional gradient of Rhododendron ferrugineum (L.) populations (subalpine level, northwestern Alps, France). Arctic, Antarctic, and Alpine Research 37:454–464.
   Web of Science ®Google Scholar
• Elzinga CL, Salzer DW, Willoughby JW, Gibbs JP. 2001. Monitoring plant and animal populations. Malden (MA): Blackwell Science.
   Google Scholar
• Etienne M. 1989. Non destructive methods for evaluating shrub biomass: a review. Acta Oecologica 10:115–128.
   Google Scholar
• Frazer GW, Canham CD, Lerstzan KP. 2000. Gap light analyzer 2.0. Bulletin of the Ecological Society of America 81:191–197.
   Google Scholar
• Gerdol R, Brancaleoni L, Menghini M, Marchesini R. 2000. Response of dwarf shrubs to neighbour removal and nutrient addition and their influence on community structure in a subalpine heath. Journal of Ecology 88:256–266.
   Web of Science ®Google Scholar
• Gilliam FS. 2007. The ecological significance of the herbaceous layer in temperate forest ecosystems. BioScience 57:845–858.
   Web of Science ®Google Scholar
• Gracia M, Montané F, Piqué J, Retana J. 2007. Overstory structure and topographic gradients determining diversity and abundance of understory shrub species in temperate forests in central Pyrenees (NE Spain). Forest Ecology and Management 242:391–397.
   Web of Science ®Google Scholar
• Greenberg CH, Levey DJ, Loftis DL. 2007. Fruit production in mature and recently regenerated forests of the Appalachians. Journal of Wildlife Management 71:321–335.
   Web of Science ®Google Scholar
• Hancock MH, Amphlett A, Proctor R, Dugan D, Willi J, Harvey P, Summers RW. 2011. Burning and mowing as habitat management for capercaillie Tetrao urogallus: an experimental test. Forest Ecology and Management 262:509–521.
   Web of Science ®Google Scholar
• Hedwall PO, Brunet J, Nordin A, Bergh J. 2013. Changes in the abundance of keystone forest floor species in response to changes of forest structure. Journal of Vegetation Science 24:296–306.
   Web of Science ®Google Scholar
• Herrick JE, Van Zee JW, Havstad KM, Burkett LM, Whitford WG. 2009. Monitoring manual for grassland, shrubland and savanna ecosystems. Volume I. Las Cruces (NM): USDA-ARS Jornada Experimental Range.
   Google Scholar
• Ihalainen M, Pukkala T, Saastamoinen O. 2005. Regional expert models for bilberry and cowberry yields in Finland. Boreal Environment Research 10:145–158.
   Web of Science ®Google Scholar
• Jonasson S. 1988. Evaluation of the point intercept method for the estimation of plant biomass. Oikos 52:101–106.
   Web of Science ®Google Scholar
• Jongman RHG, ter Braak CJF, van Tongeren OFR. 1987. Data analysis in community and landscape ecology. Wageningen (Netherland): Pudoc.
   Google Scholar
• Jordano P. 2000. Fruits and frugivory. In: Fenner M, editor. Seeds the ecology of regeneration in plant communities. 2nd ed. Wallingford (UK): CABI Publ. p. 125–166.
   Google Scholar
• Kent M, Coker P. 1992. Vegetation description and analysis. Boca Raton (FL): CRC Press.
   Google Scholar
• Kreyling J, Haei M, Laudon H. 2012. Absence of snow cover reduces understory plant cover and alters plant community composition in boreal forests. Oecologia 168:577–587.
   PubMed Web of Science ®Google Scholar
• Lakka J, Kouki J. 2009. Patterns of field layer invertebrates in successional stages of managed boreal forest: implications for the declining Capercaillie Tetrao urogallus L. population. Forest Ecology and Management 257:600–607.
   Web of Science ®Google Scholar
• Légaré S, Bergeron Y, Leduc A, Paré D. 2001. Comparison of the understory vegetation in boreal forest types of southwest Quebec. Canadian Journal of Botany 79:1019–1027.
   Google Scholar
• Leps J, Smilauer P. 2003. Multivariate analysis of ecological data using CANOCO. Cambridge: Cambridge University Press.
   Google Scholar
• Löffler J. 2007. The influence of micro-climate, snow cover, and soil moisture on ecosystem functioning in high mountains. Journal of Geographical Sciences 17:3–19.
   Web of Science ®Google Scholar
• Marshall K. 1998. Reintroducing capercaillie (Tetrao urogallus) into southern Scotland: identification of minimum viable populations at potential release sites. Biodiversity and Conservation 7:275–296.
   Web of Science ®Google Scholar
• Ménoni E, Favre Ayala V, Cantegrel R, Revenga J, Camprodon J, Garcia D, Campión D, Riba L. 2012. Réflexion technique pour la prise en compte du Grand Tétras dans la gestion forestière pyrénéenne. Pau (France): FORESPIR, Union Européenne, DREAL-Midi-Pyrénées.
   Google Scholar
• Miina J, Hotanen J-P, Salo K. 2009. Modelling the abundance and temporal variation in the production of bilberry (Vaccinium myrtillus L.) in Finnish mineral soil forests. Silva Fennica 43:577–593.
   Web of Science ®Google Scholar
• Mikolas M, Svitok M, Tejkal M, Leitao PJ, Morrissey RC, Svoboda M, Seedre M, Fontaine JB. 2015. Evaluating forest management intensity on an umbrella species: capercaillie persistence in central Europe. Forest Ecology and Management 354:26–34.
   Web of Science ®Google Scholar
• Minore D. 1984. Vaccinium membranaceum berry production seven years after treatment to reduce overstory tree canopies. Northwest Science 58:208–212.
   Web of Science ®Google Scholar
• Montané F, Casals P, Dale MRT. 2011. How spatial heterogeneity of cover affects patterns of shrub encroachment into mesic grasslands. Plos One 6:e28652.
   PubMed Web of Science ®Google Scholar
• Montané F, Casals P, Taull M, Lambert M, Dale MRT. 2010. Spatial patterns of shrub encroachment in neighbouring grassland communities in the Pyrenees: floristic composition heterogeneity drives shrub proliferation rates. Plant Ecology 211:267–278.
   Web of Science ®Google Scholar
• Moola FM, Mallik AU. 1998. Morphological plasticity and regeneration strategies of velvet leaf blueberry (Vaccinium myrtilloides Michx.) following canopy disturbance in boreal mixedwood forests. Forest Ecology and Management 111:35–50.
   Web of Science ®Google Scholar
• Nielsen A, Totland O, Ohlson M. 2007. The effect of forest management operations on population performance of Vaccinium myrtillus on a landscape-scale. Basic and Applied Ecology 8:231–241.
   Web of Science ®Google Scholar
• Nilsson M-C, Wardle DA. 2005. Understory vegetation as a forest ecosystem driver: evidence from the Northern Swedish boreal forest. Frontiers in Ecology and the Environment 3:421–428.
   Web of Science ®Google Scholar
• Ninyerola M, Pons X, Roure JM. 2000. A methodological approach of climatological modelling of air temperature and precipitation through GIS techniques. International Journal of Climatology 20:1823–1841.
   Web of Science ®Google Scholar
• Olmo J. 2012. Les poblacions d’artròpodes com a preses potencials a la dieta dels polls de gall fer (Tetrao urogallus). Influència del canvi climàtic [ PhD thesis]. [Barcelona, Spain]:Universitat de Barcelona.
   Google Scholar
• Parlane S, Summers RW, Cowie NR, van Gardingen PR. 2006. Management proposals for bilberry in Scots pine woodland. Forest Ecology and Management 222:272–278.
   Web of Science ®Google Scholar
• Pasche F, Armand M, Gouaux P, Lamaze T, Pornon A. 2004. Are meadows with high ecological and patrimonial value endangered by heathland invasion in the French central Pyrenees? Biological Conservation 118:101–108.
   Web of Science ®Google Scholar
• Pengelly I, Hamer D. 2015. Grouseberry (Vaccinium scoparium Leiberg ex Coville) fruit production in forest openings in Banff National Park, Alberta. The Canadian Field-Naturalist 128:400–407.
   Google Scholar
• Phoenix GK, Gwynn-Jones D, Callaghan TV, Sleep D, Lee JA. 2001. Effects of global change on a sub-Arctic heath: effects of enhanced UV-B radiation and increased summer precipitation. Journal of Ecology 89:256–267.
   Web of Science ®Google Scholar
• Pigott CD. 1983. Regeneration of oak-birch woodland following exclusion of sheep. Journal of Ecology 71:629–646.
   Web of Science ®Google Scholar
• Pornon A, Escaravage N, Lamaze T. 2007. Complementarity in mineral nitrogen use among dominant plant species in a subalpine community. American Journal of Botany 94:1778–1785.
   PubMed Web of Science ®Google Scholar
• Pornon A, Escaravage N, Till-Bottraud I, Doche B. 1997. Variation of reproductive traits in Rhododendron ferrugineum L. (Ericaceae) populations along a successional gradient. Plant Ecology 130:1–11.
   Web of Science ®Google Scholar
• R Development Core Team. 2011. R: a language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. Available from: http://www.R-project.org; web accessed April 28, 2016.
   Google Scholar
• Raatikainen M, Rossi E, Huovinen J, Koskela M-L, Niemela M, Raatikainen T. 1984. The yields of the edible wild berries in Central Finland. Silva Fennica 18:199–219.
   Google Scholar
• Rasmus S, Lundell R, Saarinen T. 2011. Interactions between snow, canopy and vegetation in a boreal coniferous forest. Plant Ecology & Diversity 4:55–65.
   Web of Science ®Google Scholar
• Rivas Martínez S. 1968. Estudio fitosociológico de los bosques y matorrales pirenaicos del piso subalpino. Publicaciones Instituto Biología Aplicada 44:5–44.
   Google Scholar
• Selas V. 2000. Seed production of a masting dwarf shrub, Vaccinium myrtillus, in relation to previous reproduction and weather. Canadian Journal of Botany 78:423–429.
   Google Scholar
• Storch I. 1993. Habitat selection by capercaillie in summer and autumn: is bilberry important? Oecologia 95:257–265.
   PubMed Web of Science ®Google Scholar
• Summers RW, Green RE, Proctor R, Dugan D, Lambie D, Moncrieff R, Moss R, Baines D. 2004a. An experimental study of the effects of predation on the breeding productivity of capercaillie and black grouse. Journal of Applied Ecology 41:513–525.
   Web of Science ®Google Scholar
• Summers RW, Proctor R, Thorton M, Avey G. 2004b. Habitat selection and diet of the capercaillie Tetrao urogallus in Abernethy forest, Strathspey, Scotland. Bird Study 51:58–68.
   Web of Science ®Google Scholar
• Taulavuori K, Bauer E, Taulavuori E. 2011. Overwintering stress of Vaccinium vitis-idaea in the absence of snow cover. Environmental and Experimental Botany 72:397–403.
   Web of Science ®Google Scholar
• Tazik DJ, Warren SD, Diersing VE, Shaw RB, Brozka RJ, Bagley CF, Whitworth WR. 1992. U.S. army land condition-trend analysis (LCTA) plot inventory field methods. USACERL Technical Report N-92/03.
   Google Scholar
• Tyler G. 1989. Interacting effects of soil acidity and canopy cover on the species composition of field-layer vegetation in oak/hornbeam forests. Forest Ecology and Management 28:101–114.
   Web of Science ®Google Scholar
• Vigo J. 2009. L’alta muntanya catalana: flora i vegetació. Barcelona (Spain): Institut d’Estudis Catalans.
   Google Scholar
• Walker DA, Billings WD, Molenaar JGD. 2001. Snow-vegetation interactions in tundra environments. In: Jones HG, Hoham RW, Pomeroy JW, Walker DA, editors. Snow ecology. Cambridge (UK): Cambridge University Press. p. 266–324.
   Google Scholar
• Woodward FI. 1986. Ecophysiological studies on the shrub Vaccinium myrtillus L. taken from a wide altitudinal range. Oecologia 70:580–586.
   PubMed Web of Science ®Google Scholar