Plant species richness and spatial organization at different small scales in western Mediterranean landscapes Article Received: 03 April 2003 Accepted: 09 February 2004 DOI:
Cite this article as: Miguel, J.M.D., Ramírez-Sanz, L., Castro, I. et al. Plant Ecol (2005) 176: 185. doi:10.1007/s11258-004-0067-4 Abstract
The relationship between plant species richness and the space organization of the community at different small scales was studied. The study was based on 51 sites distributed along a belt from Central Spain to Portugal. Each site was analyzed with a transect cutting across the boundary between two neighboring patches of shrubland and grassland. Local spatial organization of vegetation was analyzed at different levels of detail and each transect was divided into successively smaller portions. The first division coincides with a physiognomic perception of the site in two patches (shrubland and grassland). The average spatial niche width of the species was used to calculate the spatial organization of the vegetation of each division in each site. The correlation between species richness and spatial organization depended on the block size under consideration. A physiognomic criterion, sectorizing the sites into patches of shrubland and grassland, determines noteworthy floristic changes but does not enable us to express satisfactorily the variability in plant richness. In order to account for this variation, other factors must be taken into account which act at a more detailed small-scale and which determine the internal variability of these patches. In the case studied, the species richness of the sites increases along with an increase in the percentage of species whose occupation of the space is relatively restricted within the site. Many of these species are, however, frequent within the whole of the territory studied. The results highlight the importance of the level of local scale at which the factors influencing occupation of the space, and consequentially, plant richness, preferentially act. This circumstance ought to be taken into consideration in strategies for the conservation of biological diversity, and based on the delimitation of protected spaces with criteria frequently linked to the physiognomy of the vegetation.
Keywords Ecological boundary Grasslands Mediterranean ecosystems Portugal Shrublands Spain Spatial niche width Vegetation physiognomy
Nomenclature: Follows T.G. Tutin et al. 1964-1980. Flora Europaea. Cambridge University Press, Cambridge
References Allen, T.F.H, Starr, T.B. 1982Hierarchy: perspectives for ecological diversity University of Chicago Press Chicago, USA Google Scholar Allen, T.F.H. 1987 Hierachical complexity in ecology: a noneuclidean conception of the data space Vegetatio 69 17 25 CrossRef Google Scholar Allen, T.F.H. 1998 The landscape ’level’ is dead: persuading the family to take it off the respirator Peterson, D.L Parker, V.T. eds. Ecological scale. Theory and applications Columbia Univ. Press New York, USA Google Scholar
Allue J.L. 1990. Atlas fitoclimático de España. Taxonomías. INIA, Ministerio de Agricultura, Pesca y Alimentación, Madrid, Spain.
Bunce, R.H. Pérez-Soba, M. Elbersen, B.S. Prados, M.J. Andersen, E. Bell, M Smeets, P.J.A.M eds. 2001Examples of European agri-environment schemes and livestock systems and their influence on Spanish cultural landscapes Alterra Wageningen, The Netherlands Google Scholar Casado, M.A., Ramirez-Sanz, L, Castro, I, Miguel, J.M, De Pablo, C.T. 1997 An objective method for partitioning dendrograms based on entropy parameters Plant Ecology 131 193 197 CrossRef Google Scholar Casado, M.A., Castro, I., Ramirez-Sanz, L., Costa-Tenorio, M., De Miguel, J.M, D’Pineda, F. 2004 Herbaceous plant richness and vegetation cover in Mediterranean grasslands and shrublands Plant Ecology 170 83 90 CrossRef Google Scholar Collins, S.L, Glenn, S.M. 1991 Importance of spatial and temporal dynamics in species regional abundance and distribution Ecology 72 654 664 Google Scholar Currie, D.J. 1991 Energy and large-scale pattern of animal and plant species richness The American Naturalist 137 27 49 CrossRef Google Scholar Currie, D.J, Paquin, V. 1987 Large-scale biogeographical patterns od species richness in trees Nature 329 326 327 CrossRef Google Scholar De Miguel, J.M. 1999 Nature and configuration of the agricultural-forestry-pasture landscape in the conservation of biological diversity in Spain Revista Chilena de Historia Natural 72 547 557 Google Scholar De Miguel, J.M., Rodriguez, M.A, Gomez Sal, A. 1991 Detection of temporal behavior patterns of free-ranging cattle by means of diversity spectra Pirineos 137 51 64 Google Scholar De Pablo, C.L., Peco, B., Galiano, E.F., Nicolás, J.P, Pineda, F.D. 1982 Space-time variability in Mediterranean analyzed with diversity parameters Vegetatio 50 113 125 CrossRef Google Scholar Denslow, J.S. 1995 Disturbance and diversity in tropical rain forests: the density effect Ecological Applications 5 962 968 Google Scholar Gaston, K.J. 2000 Global patterns in biodiversity Nature 405 220 227 CrossRef PubMed Google Scholar Gaston, K.J, Lawton, J.H. 1990 Effects of scale and habitat on the relationship between regional distribution and local abundance Oikos 58 329 335 Google Scholar Gittins, R. 1968 Trend-surface analysis of ecological data Journal of Ecology 56 845 869 Google Scholar Glenn-Lewin, D.C, Ver Hoef, J.M. 1988 Scale, pattern analysis and species diversity in grasslands During, H.J. Werger, M.J.A Willems, H.J. eds. Diversity and pattern in plant communities. SPB Acad. Publ. The Hague, The Netherlands 115 129 Google Scholar Gómez Sal, A., Rodr�z, M.A, Miguel, J.M. 1992 Matter transfer and land use by cattle in a dehesa ecosystem of Central Spain Vegetatio 99 345 354 CrossRef Google Scholar Gómez Sal, A., Rodr�z, M.A, Miguel, J.M. 1992 Matter transfer and land use by cattle in a dehesa ecosystem of Central Spain Vegetatio 99-100 345 354 CrossRef Google Scholar Goodall, D.W. 1954 Objective methods for the classification of vegetation, III An essay in the use of factor analysis. Australian Journal Botany 9 304 324 Google Scholar Grime, J.P. 1979Plant strategies and vegetation processes Wiley London, UK Google Scholar Humbert, A. 1980Le Monte dans les Cha?nes Subbètiques Centrales (Espagne du Sud) Publ. Dep. Gèographie Univ. Sorbonne N10 Paris, France Google Scholar Huston, M.A, Smith, T. 1987 Plant succession: life history and competition American Naturalist 130 168 198 CrossRef Google Scholar Huston, M.A. 1979 American Naturalist A general hypothesis of species diversity 113 81 101 Google Scholar Huston, M.A. 1994Biological diversity: the coexistence of species on changing landscapes Cambridge Univ. Press Cambridge, UK Google Scholar Huston, M.A. 1999 Local processes and regional patterns: appropriate scales for understanding variation in the diversity of plants and animals Oikos 86 393 401 Google Scholar MacArthur, R.H. 1968 The theory of the niche Lewontin, R.C eds. , Population Biology and Evolution. Syracuse University Press Syracuse, USA 159 186 Google Scholar Maestas, J.D., Knight, R.L, Gilgert, W.C. 2003 Biodiversity across a rural land-use gradient Conservation Biology 17 28 43 CrossRef Google Scholar Magurran, A.E. 1988Ecological diversity and its measurement Princeton University Press Princeton, USA Google Scholar Malo, J.E, Suárez, F. 1995 Establishment of pasture species on cattle dung: the role of endozoochorous seeds Journal of Vegetation Science 6 169 174 Google Scholar Margalef, R. 1997Our Biosphere Ecology Institute Oldendorf, Germany Google Scholar May, R.M. 1986 The search for pattern in the balance of nature: advances and retreats Ecology 67 1115 1126 Google Scholar Moore, D.R.J, Keddy, P.A. 1989 The relationship between species richness and standing crop in wetlands: the importance of scale Vegetatio 79 99 106 CrossRef Google Scholar Osman, R.W, Whitlach, R.B. 1978 Patterns of species diversity: fact or artifact Paleobiology 4 41 54 Google Scholar Pastor, J., Downing, A, Erickson, H.E. 1996 Species-area curves and diversity-productivity relationships in beaver meadows of Voyageurs National Park, Minnesota, USA Oikos 77 399 406 Google Scholar Peet, R.K., Glenn-Lewin, D.C, Wolf, J.W. 1983 Prediction of man’s impact on plant species diversity. Holzner, W Werger, M.J.A Ikusima, Y. eds. Manų impact on vegetation. Junk Boston, USA 41 54 Google Scholar Pickett, S.T.A, Cadenasso, M.L. 1995 Landscape ecology: spatial heterogeneity in ecological systems Science 269 331 334 Google Scholar Pickett, S.T.A White, P.S. eds. 1985The ecology of natural disturbance and patch dynamics Academic Press Orlando Google Scholar Pielou, E.C. 1977Mathematical ecology John Wiley and Sons New York, USA Google Scholar Pineda, F.D., Nicol’s, J.P., Ruiz, M., Peco, B, Bernaldez, F.G 1981 Succession, diversitÈ et amplitude de niche dans les p’urages du Centre de la Peninsule Iberique Vegetatio 47 267 277 CrossRef Google Scholar Pineda, F.D., Pablo, C.T., Casado, M.A, Miguel, J.M. 1988 Ecological structures recognized by means of entropy analysis: Assessment of differences between entropy values J. Theoretical Biology 135 283 293 Google Scholar Ram�-Sanz, L., Casado, M.A., De Miguel, J.M., Castro, I., Costa, M, Pineda, F.D. 2000 Floristic relationship between shrubland and grassland patches in the Mediterranean landscape of the Iberian Peninsula Plant Ecology 149 63 70 CrossRef Google Scholar Rescia, A., Schmitz, M.F., Mart� Agar, P., De Pablo, C.L, Pineda, F.D. 1994 Influence of landscape complexity and land management on woody plant diversity in northern Spain Journal of Vegetation Science 5 505 516 Google Scholar Rivas-Mart�, S. 1987Mapas de las series de vegetación de España ICONA, Ministerio de Agricultura, Pesa y Alimentación Madrid, Spain Google Scholar Rosenzweig, M.L. 1995Species diversity in space and time Cambridge University Press USA Google Scholar
Ruiz M. (1986). Sustainable food and energy production in the Spanish dehesa. The Food Energy Nexus Programme, UNU, The United Nations University. FEN Res. Reports
Scheiner, S.M, Rey Benayas, J.M. 1994 Global patterns of plant diversity Evolutionary Ecology 8 331 347 CrossRef Google Scholar Shmida, A, Wilson, M.V. 1985 Biological determinants of species diversity Journal of Biogeography 12 1 20 Google Scholar Sokal, R, Rholf, F.J. 1969Biometry Freeman and Company, New York New York, USA Google Scholar Sterling, A., Peco, B., Casado, M.A., Galiano, E.F, Pineda, F.D 1984 Microtopography and floristic variation in the ecological succession of grasslands Oikos 42 334 342 Google Scholar Stevens, G.C. 1989 The latitudinal gradient in geographical range: how so many species coexist in the tropics The American Naturalist 133 240 256 CrossRef Google Scholar Tilman, D. 1988Plant strategies and the dynamics and structure of plant communities Princeton University Press Princeton, USA Google Scholar Tilman, D, Pacala, S. 1993 The maintenance of species richness in plant communities. Ricklefs, R.E. Schluter, D. eds. Species diversity in ecological communities: historic and geographic perspectives. University of Chicago Press Chicago, USA 13 25 Google Scholar Tilman, D., Wedin, D, Knops, J. 1996 Productivity and sustainability influenced by biodiversity in grassland ecosystems Nature 379 718 720 CrossRef Google Scholar Waide, R.B., Willig, M.R., Steiner, C.F., Mittelbach, G., Gough, L., Dodson, S.I., Juday, G.P, Parmenter, R. 1999 The relationship between productivity and species richness Annual Review of Ecology and Systematics 30 257 300 CrossRef Google Scholar Wiether, E, Howe, A. 2003 Scale-dependence of environmental effects on species richness in oak savannas Journal of Vegetation Science 14 917 920 Google Scholar Zorrilla, J.M., Serrano, J., Casado, M.A., Acosta, F, Pineda, F.D. 1986 Structural characteristics of ant community during succession Oikos 47 346 354 Google Scholar