Effects of geographical extent on the determinants of woody plant diversity

Despite a long history of study, the mechanisms underlying the geographical patterns of species richness are still controversial. Patterns and determinants of species richness are well-known to vary with spatial scale. However, most studies on the effects of scale have focused on grain size whereas the quantitative effects of geographical extent are rarely tested. Here, using distribution maps of 11 405 woody species found in China and associated environmental data to the domain, we investigated the influence of geographical extent on the determinants of species richness patterns. Our results revealed consistent extent dependence of all species, narrow- and wide-ranged species: with the expansion of geographical extents, the explanatory power of climate (i.e. environmental energy, water availability and climatic seasonality) increased, while the explanatory power of habitat heterogeneity and human activities decreased. Although the primary determinant of species richness patterns varied significantly at small to meso-geographical extent, we showed that species richness was predominantly determined by environmental energy at large extent. Our findings indicate that differences in geographical extent may have led to the controversies regarding the primary determinants of richness patterns in previous studies, and that a multi-scale perspective not only with regard to grain-size but also extent is likely to shed new light on this old debate of what determines richness patterns.

[1]  Jingyun Fang,et al.  Relative role of contemporary environment versus history in shaping diversity patterns of China's woody plants , 2012 .

[2]  Jingyun Fang,et al.  Geographical patterns in the beta diversity of China's woody plants: the influence of space, environment and range size , 2012 .

[3]  X. Mi,et al.  Separating the effect of mechanisms shaping species-abundance distributions at multiple scales in a subtropical forest , 2012 .

[4]  Jingyun Fang,et al.  Patterns, determinants and models of woody plant diversity in China , 2011, Proceedings of the Royal Society B: Biological Sciences.

[5]  Flemming Skov,et al.  Postglacial migration supplements climate in determining plant species ranges in Europe , 2011, Proceedings of the Royal Society B: Biological Sciences.

[6]  Walter Jetz,et al.  Cross-scale variation in species richness–environment associations , 2011 .

[7]  Nathan G. Swenson,et al.  Deterministic tropical tree community turnover: evidence from patterns of functional beta diversity along an elevational gradient , 2011, Proceedings of the Royal Society B: Biological Sciences.

[8]  Werner Kissling,et al.  Spatial scale and cross-taxon congruence of terrestrial vertebrate and vascular plant species richness in China. , 2010, Ecology.

[9]  James H. Brown,et al.  Temperature dependence, spatial scale, and tree species diversity in eastern Asia and North America , 2009, Proceedings of the National Academy of Sciences.

[10]  Richard Field,et al.  Spatial species‐richness gradients across scales: a meta‐analysis , 2009 .

[11]  B. A. Hawkins,et al.  Why do mountains support so many species of birds , 2008 .

[12]  M. Araújo,et al.  Scale effects and human impact on the elevational species richness gradients , 2008, Nature.

[13]  Flemming Skov,et al.  Could the tree diversity pattern in Europe be generated by postglacial dispersal limitation? , 2007, Ecology letters.

[14]  Jeremy T. Kerr,et al.  Human impacts on environment–diversity relationships: evidence for biotic homogenization from butterfly species richness patterns , 2007 .

[15]  Eileen M. O'Brien.  Biological relativity to water–energy dynamics , 2006 .

[16]  Jingyun Fang,et al.  Climatic limits for the present distribution of beech (Fagus L.) species in the world , 2006 .

[17]  Liangjun Da,et al.  Biodiversity changes in the lakes of the Central Yangtze , 2006 .

[18]  Jennifer A Hoeting,et al.  Model selection for geostatistical models. , 2006, Ecological applications : a publication of the Ecological Society of America.

[19]  W. Barthlott,et al.  The significance of geographic range size for spatial diversity patterns in Neotropical palms , 2006 .

[20]  J. Faraway.  Extending the Linear Model with R: Generalized Linear, Mixed Effects and Nonparametric Regression Models , 2005 .

[21]  M. Huston,et al.  A Hierarchical Perspective of Plant Diversity , 2005, The Quarterly Review of Biology.

[22]  Kevin J. Gaston,et al.  Biodiversity and extinction: species and people , 2005 .

[23]  Ole R. Vetaas,et al.  Pteridophyte richness, climate and topography in the Iberian Peninsula: comparing spatial and nonspatial models of richness patterns , 2005 .

[24]  C. Rahbek.  The role of spatial scale and the perception of large‐scale species‐richness patterns , 2004 .

[25]  David R. Anderson,et al.  Model selection and multimodel inference : a practical information-theoretic approach , 2003 .

[26]  José Alexandre Felizola Diniz-Filho,et al.  PRODUCTIVITY AND HISTORY AS PREDICTORS OF THE LATITUDINAL DIVERSITY GRADIENT OF TERRESTRIAL BIRDS , 2003 .

[27]  David J. Currie,et al.  A Globally Consistent Richness‐Climate Relationship for Angiosperms , 2003, The American Naturalist.

[28]  C. Rahbek,et al.  Geographic Range Size and Determinants of Avian Species Richness , 2002, Science.

[29]  K. Kitayama,et al.  Effects of topography on tropical lower montane forests under different geological conditions on Mount Kinabalu, Borneo , 2002, Plant Ecology.

[30]  P. Reich,et al.  Diversity and Productivity in a Long-Term Grassland Experiment , 2001, Science.

[31]  Katherine L. Gross,et al.  WHAT IS THE OBSERVED RELATIONSHIP BETWEEN SPECIES RICHNESS AND PRODUCTIVITY , 2001 .

[32]  J. Silvertown,et al.  Phylogeny and the niche structure of meadow plant communities , 2001 .

[33]  C. Rahbek,et al.  Geometric constraints explain much of the species richness pattern in African birds , 2001, Proceedings of the National Academy of Sciences of the United States of America.

[34]  G. Graves,et al.  Multiscale assessment of patterns of avian species richness , 2001, Proceedings of the National Academy of Sciences of the United States of America.

[35]  R. Whittaker,et al.  Scale and species richness: towards a general, hierarchical theory of species diversity , 2001 .

[36]  C. Rahbek,et al.  Conservation conflicts across Africa. , 2001, Science.

[37]  G. Graves,et al.  Detection of macro-ecological patterns in South American hummingbirds is affected by spatial scale , 2000, Proceedings of the Royal Society of London. Series B: Biological Sciences.

[38]  Jack J. Lennon,et al.  Red-shifts and red herrings in geographical ecology , 2000 .

[39]  H. Olff,et al.  Spatial scaling laws yield a synthetic theory of biodiversity , 1999, Nature.

[40]  Robert H. Fraser,et al.  Vertebrate species richness at the mesoscale: relative roles of energy and heterogeneity , 1998 .

[41]  Eileen M. O'Brien.  Water‐energy dynamics, climate, and prediction of woody plant species richness: an interim general model , 1998 .

[42]  Cindy Q. Tang,et al.  Zonal transition of evergreen, deciduous, and coniferous forests along the altitudinal gradient on a humid subtropical mountain, Mt. Emei, Sichuan, China , 1997, Plant Ecology.

[43]  A. Magurran,et al.  Biological diversity : the coexistence of species on changing landscapes , 1994 .

[44]  R. Ricklefs,et al.  Global patterns of tree species richness in moist forests : energy-diversity theory does not account for variation in species richness. , 1993 .

[45]  S. Levin.  The problem of pattern and scale in ecology , 1992 .

[46]  Roy Haines-Young,et al.  Biogeography , 1992, Vegetatio.

[47]  T. Kira,et al.  Forest ecosystems of east and southeast Asia in a global perspective , 1991, Ecological Research.

[48]  D. Currie.  Energy and Large-Scale Patterns of Animal- and Plant-Species Richness , 1991, The American Naturalist.

[49]  David J. Currie,et al.  Large-scale biogeographical patterns of species richness of trees , 1987, Nature.

[50]  C. W. Thornthwaite,et al.  Climatic classification in forestry , 1955 .

[51]  A. Bennett.  The Origin of Species by means of Natural Selection; or the Preservation of Favoured Races in the Struggle for Life , 1872, Nature.

[52]  Jingyun Fang,et al.  Atlas of Woody Plants in China , 2011 .

[53]  Jingyun Fang,et al.  Atlas of woody plants in China : distribution and climate , 2011 .

[54]  M. Pautasso,et al.  Scale dependence of the correlation between human population presence and vertebrate and plant species richness. , 2007, Ecology letters.

[55]  R. Macarthur.  The Problem of Pattern and Scale in Ecology: The Robert H. MacArthur Award Lecture , 2005 .

[56]  中国科学院中国植被图编辑委员会.  中国植被图集 = Vegetation atlas of China , 2001 .

[57]  Jeremy T. Kerr,et al.  Habitat heterogeneity as a determinant of mammal species richness in high-energy regions , 1997, Nature.

[58]  K. Böhning‐Gaese.  Determinants of avian species richness at different spatial scales , 1997 .

[59]  J. Wiens.  Spatial Scaling in Ecology , 1989 .

[60]  A. Shmida,et al.  Biological determinants of species diversity , 1985 .