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| 1 | Relative importance of spatial processes and environmental factors in shaping alpine meadow communities显示文摘Spatial processes and environmental control are the two distinct,yet not mutually exclusive forces of community structuring,but the relative importance of these factors is controversial due to the speciesspecific dispersal ability,sensitivity towards environmental variables,organism’s abundance and the effect of spatial scale.In the present paper,we explored spatial versus environmental control in shaping community composition(i.e.b-diversity)and species turnover(i.e.change of b-diversity)at an alpine meadow along a slope aspect gradient on the Qinghai–Tibetan Plateau at different spatial scales of sampling(quadrats and plots),by taking account of seed dispersal mode and abundance.Methods We examined the relative importance of spatial processes and environmental factors using all species and four additional subsets of selected species.Moreover,we attempted to explore the effect of scale(quadrat refers to scale of;0.3 m and plot of;8 m)on their counter balance.The data were analyzed both by variation partitioning and multiple regressions on distance matrices.The spatial structure was modelled using Moran’s eigenvector maps(MEM).Important Findings Both spatial processes and environmental factors were important determinants of the community composition and species turnover.The community composition in the alpine meadow was controlled by spatially structured environment(17.6%),space independent of environment(18.0%)and a negligible effect of environment independent of space(4.4%)at the scale of quadrats.These three components contributed 21.8,9.9 and 13.9%,respectively,at the scale of plots.The balance between the forces at different spatial scales drove community structures along the slope aspect gradient.The importance of environmental factors on b-diversity at alpine meadow increased with scale while that of spatial processes decreased or kept steady,depending on dispersal mode and abundance of species comprising the subset.But the‘pure’effect of spatial processes on species turnover increased with scale while that of environmental factors decreased.This discrepancy highlights that b-diversity and species turnover were determined jointly by spatial processes and environmental factors.We also found that the relative roles of these processes vary with spatial scale.These results underline the importance of considering species-specific dispersal ability and abundance of species comprising the communities and the appropriate spatial scale in understanding the mechanisms of community assembly. | Qi Li Xue Yang Janne Soininen Cheng-Jin Chu Jie-Qi Zhang Kai-Liang Yu Gang Wang | 2011 | Journal of Plant Ecology2011，4，4： | 7 |
| 2 | Extending and implementing the stable model semantics显示文摘 | Simons P Niemel(A)a I Soininen T | | 0，，1： | 1 |
| 3 | Strategies for organic impurity quantification by ^1H NMR spectroscopy: Constrained total-line-shape fitting 显示文摘 | Soininen P Haarala J Vepsalainen J | 2005 | Anal Chim Acta2005，542，2： | 1 |
| 4 | Providing Network Connectivity for Small Appliances: A Functionally Minimized Embedded Web Server 显示文摘 | Saaranen M J Roivainen J Soininen J P | 2001 | IEEE Communications2001，01，63680401： | 1 |
| 5 | Impaired endochondral ossification and angiogenesis in mice deficient in membrane-type matrix metalloproteinase I 显示文摘 | Zhou Z Apte SS Soininen R | 2000 | Proc Natl Acad Sci USA2000，97，8： | 1 |
| 6 | Kumbang: A Domain Ontology for Modelling Variability in Software Product Families显示文摘 | Asikainen T Mannisto T and Soininen T | 2007 | Advanced Engineering Informatics2007，，1： | 1 |
| 7 | Benthic diatom communities in boreal streams: community structure in relation to environment and spatial gradients 显示文摘 | SOININEN J PAAVOLA R MUOTKA T | 2004 | Ecography2004，27，： | 1 |
| 8 | Metabonomic,transcriptomic,and genomic variation of a population cohort显示文摘 | Inouye M Kettunen J Soininen P | 2010 | Mol Syst Biol2010，6，： | 1 |
| 9 | Impaired endochondral ossification and angiogenesis in mice deficient in membrane - type matrix metalloproteinase I显示文摘 | ZHOU Z APTE S S SOININEN R | 2000 | Proc Natl Acad Sci U S A2000，97，8： | 1 |
| 10 | MR T2 relaxometryin Alzheimer’s disease and age-associated memory impairment显示文摘 | Laakso MP Partanen K Soininen H | 1996 | Neurobiol Aging1996，17，4： | 1 |
| 11 | Hippocampal plasticity in Alzheimer's disease 显示文摘 | Mikkonen M Soininen H Alafuzof I | 2011 | Rev Neurosci2011，12，4： | 1 |
| 12 | Loss of synaptophysin-like immunoreactivity in the hippocampal formation is an early phenomenon in Alzheimer' s disease显示文摘 | Heinonen O Soininen H Sorvari H | | 0，，： | 1 |
| 13 | CSF A~i42 and tau or phosphorylated tau and prediction of progressive mild cognitive impairment 显示文摘 | Herukka SK Hallikainen M Soininen H | 2005 | Neurology2005，64，： | 1 |
| 14 | Hierarchical structures in lamellar hydrogen bonded LC side chain diblock copolymers显示文摘 | SOININEN A J TANIONOU I BRUMMELHUIS N | 2012 | Macromolecules2012，45，17： | 1 |
| 15 | Determination of the degree of substitution of acetylated starch by hydrolysis, IH NMR and TGA/IR显示文摘 | Elomaa M Asplund T Soininen P | 2004 | Carbohydrate Polymers2004，57，3： | 1 |
| 16 | Structural and func- tional MRI in mild cognitive impairment显示文摘 | Pihlajamaki M Jauhiainen AM Soininen H | 2009 | Curr Alzheimer Res2009，6，2： | 1 |
| 17 | Strategies for organic impurity quantification by 1HNMR spectroscopy:constrained total-line-shape fitting显示文摘 | SOININEN P HAARALA J VEPS(A)L(A)INEN J | | 0，，02： | 1 |
| 18 | The murine neph- rin gene is specifically expressed in kidney,brain and pancre- as:inactivation of the gene leads to massive proteinuria and neonatal death 显示文摘 | Putaala H Soininen R Kilpelainen P | 2001 | Hum Mol Genet2001，10，1： | 1 |
| 19 | Increased intimal hyperplasia and smooth muscle cell proliferation in transgenic mice with heparan sulfate-deficient perlecan显示文摘 | Tran P K Tran-Lundmark K Soininen R | 2004 | Cire Res2004，94，： | 1 |
| 20 | Volumetric MRI analysis of the amygdala and the hippocampus in subjects with ageassociated memory impairment: correlation to visual and verbal memory显示文摘 | Partanen K Pitkanen A | 1994 | Neurology1994，44，9： | 1 |
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