Abstract
We investigated the species richness of vascular plants at the scale of 5 × 5 km in the Swedish province of Härjedalen, and the relationship between richness and environment. Environmental variables included geographical, altitudinal, topographical, bedrock, soil type, and land-cover descriptors. The species richness was subdivided into groups of species with similar life-form, i.e. trees, dwarf shrubs, hydro- and helophytes, vascular cryptogams, forbs, graminoids, and mountain plants. The data were split at random into two equal subsets. Explanatory models were built by multiple linear regression on the first subset, and the models were validated on the second subset. The total species richness of vascular plants could be explained by sandy and clayey soil, the heterogeneity in bedrock types and the area of acid volcanic bedrock. The model could explain about 46% of the variation in species richness. The richness of trees and hydrophytes tended to decrease with altitude, whereas this was not the case for mountain plants. The latter group occurred frequently at low elevation, but then predominantly along streams and rivers. Clayey soils, sandy soils, and basic volcanic bedrock were the variables most frequently included in the regression models.
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References
Andersson E. and Nilsson C. 2002. Temporal variation in the drift of plant litter and propagules in a small boreal river. Freshwater Biology 47: 1674–1684.
Andersson E., Nilsson C. and Johansson M.E. 2000. Plant dispersal in boreal rivers and its relation to the diversity of riparian flora. Journal of Biogeography 2: 1095–1106.
Anonymous 1997. ArcView GIS Version 3.0a. Environmental Systems Research Institute, Inc., Redlands, California.
Birks H.J.B. 1993. Is the hypothesis of survival on glacial nunataks necessary to explain the present-day distribution of Norwegian mountain plants. Phytocoenologia 23: 399–426.
Birks H.J.B. 1996. Statistical approaches to interpret diversity patterns in the Norwegian mountain flora. Ecography 19: 332–340.
Brown J.H. 1995. Macroecology. University of Chicago Press, Chicago, Illinois.
Christophersen E. 1925. Soil reaction and plant distribution in the Sylene National Park, Norway. Transactions of the Connecticut Academy of Arts and Sciences 27: 471–577.
Crawley M.J. and Harral J.E. 2000. Scale dependence in plant biodiversity. Science 29: 864–868.
Danielsson B. 1994. Härjedalens Kärlväxtflora [TheVascular Plants of Harjedalen]. SBT-förlaget, Lund, Sweden.
Danvind M. and Nilsson C. 1997. Seed floating ability and distribution of alpine plants along a northern Swedish river. Journal of Vegetation Science 8: 271–276.
DeLaune M.G. 2000. XTools ArcView Extension (Version 10/18/2000). Oregon Department of Forestry, Salem, Oregon.
Elven R. 1984. SkjØrlokene i Nord-Norge. Blyttia 42 (in Norwegian): 57–67.
Fries T.C.E. 1925. Die Rolle des Gesteingrundes bei der Verbreitung der Gebirgspflanzen in Skandinavien. Svenska Växtsociologiska Sällskapets Handlingar 4 (in German): 1–17.
Gaston K.J. (ed.) 1996. Biodiversity: A Biology of Numbers and Differences. Blackwell Scientific Publishers, Oxford, UK.
Greig-Smith P. 1983. Quantitative Plant Ecology. 3rd edn. Blackwell Scientific Publishers, Oxford, UK.
Grime J.P. 1973. Competitive exclusion in herbaceous vegetation. Nature 242: 247–344.
Grytnes J.A., Birks H.J.B. and Peglar S.M. 1999a. Plant species richness in Fennoscandia: evaluating the relative importance of climate and history. Nordic Journal of Botany 19: 489–503.
Grytnes J.A., Birks H.J.B. and Peglar S.M. 1999b. The taxonomic distribution of rare and common species among families in the vascular plant flora of Fennoscandia. Diversity and Distributions 5: 177–186.
Guissard V. 2000. Mila Utilities 3.2 Extension. Universite Catolique de Louvain, Louvain-la-Neuve, Belgium.
Heikkinen R.K. 1996. Predicting patterns of vascular plant species richness with composite variables: a meso-scale study in Finnish Lapland. Vegetatio 126: 151–165.
Heikkinen R.K. and Birks H.J.B. 1996. Spatial and environmental components of variation in the distribution patterns of subarctic plant species at Kevo, northern Finland: a case study at the meso-scale level. Ecography 19: 341–351.
Heikkinen R.K. and Neuvonen S. 1997. Species richness of vascular plants in the subarctic landscape of northern Finland: modelling relationships to the environment. Biodiversity and Conservation 6: 1181–1201.
Heikkinen R.K., Birks H.J.B. and Kalliola R.J. 1998. A numerical analysis of the mesoscale distribution patterns of vascular plants in the subarctic Kevo Nature Reserve, northern Finland. Journal of Biogeography 25: 123–146.
Hortal J., Lobo J.M. and Martín-Piera F. 2001. Forecasting insect species richness scores in poorly surveyed territories: the case of the Portuguese dung beetles (Col. Scarabaeinae). Biodiversity and Conservation 10: 1343–1367.
Hubbell S.P. 2001. The Unified Neutral Theory of Biodiversity and Biogeography. Princeton University Press, Princeton, New Jersey.
Huston M. 1979. A general hypothesis of species diversity. American Naturalist 113: 81–101.
Legendre P. and Legendre L. 1998. Numerical Ecology. 2nd edn. Elsevier Science, Amsterdam, The Netherlands.
Linder H.P. 1991. Environmental correlates of patterns of species richness in the south-western Cape Province of South Africa. Journal of Biogeography 18: 509–518.
Lobo J.M., Castro I. and Moreno J.C. 2001. Spatial and environmental determinants of vascular plant species richness distribution in the Iberian Peninsula and Balearic Islands. Biological Journal of the Linnean Society 73: 233–253.
Mac Nally R. 2000. Regression and model-building in conservation biology, biogeography and ecology: the distinction between and reconciliation of ‘predictive’ and ‘explanatory’ models. Biodiversity and Conservation 9: 655–671.
Martens H. and Næs T. 1989. Multivariate Calibration. John Wiley & Sons, Chichester, UK.
Nilsson Ö. 1986. Nordisk Fjällflora. Bonniers, Stockholm, Sweden (in Swedish).
Olden J.D. 2000. Torturing data for the sake of generality: how valid are our regression models. Écoscience 7: 501–510.
Pannatier Y. 1996.VARIOWIN ¶ Software for Spatial Data Analysis in 2D. Springer-Verlag, New York.
Prendergast J.R., Wood S.N., Lawton J.H. and Eversham B.C. 1993. Correcting for variation in recording effort in analyses of diversity hotspots. Biodiversity Letters 1: 39–53.
Preston F.W. 1960. Time and space variation of species. Ecology 41: 611–627.
Richerson P.J. and Lum K.-L. 1980. Patterns of species diversity in California: relation to weather and topography. American Naturalist 116: 504–536.
Rogers G. and Overton J. 2000. Regional patterns of plant species richness in southern New Zealand. New Zealand Journal of Botany 38: 609–627.
Rosenzweig M.L. and Abramsky Z. 1993. How are diversity and productivity related? In: Ricklefs R.E. and Schluter D. (eds), Species Diversity in Ecological Communities: Historical and Geographical Perspectives. University of Chicago Press, Chicago, Illinois, pp. 52–65.
Ryvarden L. 1975. Studies in seed dispersal. II. Winter-dispersed species at Finse, Norway. Norwegian Journal of Botany 22: 21–24.
Shipley B. 2000. Cause and Correlation in Biology: A User's Guide to Path Analysis, Structural Equations and Causal Inference. Cambridge University Press, Cambridge, UK.
Shmida A. and Wilson M.V. 1985. Biological determinants of species diversity. Journal of Biogeography 12: 1–20.
Wiens J.A. 1989. Spatial scaling in ecology. Functional Ecology 3: 385–397.
Wohlgemuth T. 1998. Modelling floristic species richness on a regional scale: a case study in Switzerland. Biodiversity and Conservation 7: 159–177.
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Bruun, H.H., Moen, J. & Angerbjörn, A. Environmental correlates of meso-scale plant species richness in the province of Härjedalen, Sweden. Biodiversity and Conservation 12, 2025–2041 (2003). https://doi.org/10.1023/A:1024159932021
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DOI: https://doi.org/10.1023/A:1024159932021