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| 1 | Trait variation in response to resource availability and plant diversity modulates functional dissimilarity among species in experimental grasslands显示文摘Aims Functional trait differences among species are thought to be a pre-requisite for niche differentiation.Plant traits are known to vary plastically in response to environmental conditions and different plant neighbours.However,it is not clear to which extent the direc-tion and magnitude of trait variation differ among species repre-senting different growth forms or varying dominance in different environments and how this trait variation affects community-level trait dissimilarity.Methods In a field experiment,we studied shoot and leaf traits of eight peren-nial grassland species assigned to two functional groups(grasses vs.forbs)and varying in growth stature(small vs.tall)in monocultures,two-and four-species mixtures that were exposed to two levels of light(shaded vs.full light)and nutrient availability(fertilized vs.non-fertilized)to address this gap of knowledge.Important Findings Fertilization increased leaf greenness and specific leaf area(SLA)as well as tissue nitrogen concentrations.Under shading,changes in morphological and physiological light-acquisition traits as well as increased nitrogen and decreased carbon concentrations in plant tissue indicated larger efforts to acquire light and carbon limita-tion of plant growth.Similar changes in light-acquisition traits as observed under shading and decreasing shoot biomass also revealed an accelerated carbon limitation at higher species rich-ness(SR)irrespective of the external manipulation of light and nutrient supply.Overall,the direction of trait variation in response to resource availability(shade,fertilization)and SR did not differ between functional groups or growth statures.The magnitude of variation in several traits at different resource availability,however,was larger in grasses than in forbs as well as in small-statured than in tall-statured species.In general,dominant species in terms of above-ground biomass production had taller shoots with higher carbon and lower nitrogen concentrations and allocated less biomass into leaves than subordinates.The expression of leaf traits of dominants(lower SLA and higher leaf greenness than subordinates)indicated their competitive advantage in light acquisition.Shading,as well as fertilization,accentuated trait differences between dominants and subordinates.Fertilization increased community-level dissimilarity in tissue nitrogen concentrations due to differential responses of functional groups and growth statures.However,resource supply did not alter community-level dissimilarity in other traits.Our study shows that a varying extent of trait variation of species belonging to different functional groups or growth statures and varying in their ability to achieve dominance may modulate community-level trait dissimilarity at different resource availability.These results empha-size the importance to consider the context-dependency of trait-based approaches. | Alrun Siebenkäs Jens Schumacher Christiane Roscher | 2017 | Journal of Plant Ecology2017，10，6： | 2 |
| 2 | Genotoxicity of 1,3- and 1,6-dinitropyrene:induction of micronuclei in a panel of mammalian test cell lines显示文摘 | Roscher E Wiebel F J | 1992 | Mutat Res1992，278，1： | 1 |
| 3 | Tumor markers in pancreatic cancer: Sensitivity and specificity of CA 19-9 显示文摘 | Sail F Roscher R Beger HG | 1989 | Hepatogastroenterology1989，36，6： | 1 |
| 4 | The role of biodiversity for element cycling and trophic interactions:An experimental approach in a grassland community显示文摘 | Roscher C Schumacher J Baade J | | 0，，： | 1 |
| 5 | Current density and state of charge inhomogeneities in Li-ion battery cells with LiFePO4 as cathode material due to temperature gradients显示文摘 | FLECKENSTEIN M BOHLEN O ROSCHER M A | | 0，，： | 1 |
| 6 | The effect of global warming and global cooling on the distribution of the latest Permian climate zones显示文摘 | Roscher M Stordal F Svensen H | 2011 | Palaeogeography Palaeoclimatology Palaeoecology2011，309，34： | 1 |
| 7 | Dynamic electric behavior and open-circuit-voltage modeling of LiFePO4-based lithiumion secondary batteries显示文摘 | Roscher M A Sauer D U | 2011 | Journal of Power Sources2011，，1： | 1 |
| 8 | Predicting phenotype in steroid 21-hydroxylase deficiency? Comprehensive genotyping in 155 unrelated, well defined patients from southern Germany 显示文摘 | Krone N Braun A Roscher AA | 2000 | J Clin Endocrinol Metab2000，85，3： | 1 |
| 9 | Evidence for the involvement of tetrahydrofolate in the demethylation of nicotine by Nicotiana plumbaginifolia cell-suspension cultures显示文摘 | Mesnard F Roscher A Garlick AP | | 0，，6： | 1 |
| 10 | Reduced serum L-ficolin in paediat ricpatients with recurrent respiratory infection 显示文摘 | Lynch NJ Roscher S Schwaeble WJ | 2007 | Molec Immunol2007，，44： | 1 |
| 11 | Predicting phenotype in steroid 21-hydroxylase deficiency? Comprehensive genotyping in 155 unrelated, well defined patients from southern Germa- ny 显示文摘 | Krone N Braun A Roscher AA | 2000 | J Clin Endocrinol Metab2000，85，3： | 1 |
| 12 | Plant resource-use characteristics as predictors for spe- cies contribution to community biomass in experimental grasslands显示文摘 | ROSCHER C SCHERER-LORENZEN M SCHUMACHER J | 2011 | Perspectives in Plant Ecology Evolution and System- aries2011，13，1： | 1 |
| 13 | Two splice variants of human PEX19 exhibit distinct functions in peroxisomal assembly显示文摘 | Mayerhofer PU Kattenfeld T Roscher AA | 2002 | Biochem Biophys Res Conunun2002，291，5： | 1 |
| 14 | L-ficolin specifically binds to lipoteiehoic acid, a cell wall constituent of Gram-positive bacteria, and activates the lectin pathway of complement显示文摘 | Lynch N J Roscher S Hartung T | 2004 | J Immunol2004，172，2： | 1 |
| 15 | L-Rhamnose: pro- genitor of 2, 5-dimethyl-4-hydroxy -3 -furanone formation by Pichia capsulata显示文摘 | Roscher R Hilkert A Gessner M | 1997 | Z Lebensm Unters Forsch A1997，204，： | 1 |
| 16 | Dynamic electric behavior and open-circuit-voltage modeling of LiFePO4-based lithium-ion secondary batteries显示文摘 | ROSCHER M A SAUER D U | 2011 | Journal of Power Sources2011，196，1： | 1 |
| 17 | Practice management of chronic bacterial prostatitis with levofloxacin显示文摘 | Wagenlehner F Roscher K Naber K G | 2011 | Aktuelle Urol2011，42，3： | 1 |
| 18 | Decoupling of carbohydrate binding and MASP 2 autoactivation in variant mannose-binding lectins associated with immuno-deficiency显示文摘 | WallisR Lynch NJ Roscher S | 2005 | J Immunol2005，175，10： | 1 |
| 19 | Plant NMR spectroscopy显示文摘 | Ratcliffe R G Roscher A Shachar- Hill Y | 2001 | Prog Nucl Reson Spectr2001，39，： | 1 |
| 20 | Reliable state estimation of multicell lithium-ion battery systems显示文摘 | Roscher M A Bohlen O S Sauer D U | 2011 | IEEE Trans on Energy Conversion2011，26，3： | 1 |
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