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Journal of Integrative Plant Biology 2006年第4期48卷 400-408页

作者： yu Chu fei-hai yu Ming Dong Laboratory of Quantitative Vegetation Ecology Institute of Botany the Chinese Academy of Sciences Beijing 100093 China

Interconnected ramets of clonal plants can functionally specialize in the uptake of resources from aboveground and/or underground sources. Ramet pairs of the clonal stoloniferous herb Glechoma Iongltuba L. were grown In spatially heterogeneous environments with complementary availability of light and nutrients. Plasticity with respect to root-shoot ratio, fitness-related traits （biomass, number of ramets and dry weight per ramet）, morphological traits （lamina area, root length） were experimentally examined. The aim was to understand the adaptation of G. Iongltuba to an environment with reciprocal patchiness of light and soil nutrients by plasticity In Its root-shoot ratio and clonal morphology. The results showed that the performance of ramets growing In patches with high light Intensity and low soil nutrients into the adjacent opposite patches was Increased in terms of fitness-related traits. However, the performance of those from patches with low light Intensity and high soil nutrients into the adjacent opposite patches was not changed. The root-shoot ratio and clonal morphology were plastic. Morphological traits such as lamina area and root length were altered In a way that enhanced the capture of light resources and soil nutrients. Apparent reciprocal resource transport between the ramets In an environment of reciprocal patchiness of resources can enhance the growth of ramets with complementary resource deficiencies.

关键词： clonal plant clonal plasticity complementary patchiness functional specialization light soil nutrients.

Importance of starting points in heterogeneous environments: interactions between two clonal plants with contrasting spatial architectures

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Journal of Plant Ecology 2020年第3期13卷 323-330页

作者： Wei Xue Lin Huang fei-hai yu Institute of Wetland Ecology&Clone Ecology/Zhejiang Provincial Key Laboratory of Evolutionary Ecology and Conservation Taizhou UniversityShifu Road 1139Jiaojiang DistrictTaizhouZhejiang Province 318000China

Aims Plants can benefit from heterogeneous environments via disproportionately increasing resource harvesting in resource-rich *** initial growing positions with respect to resource patches may thus have important influences on their performance and relative competitive *** impacts may differ between species with contrasting spatial ***,the potential influence of initial growing positions in heterogeneous environment on plant growth and competition has largely been *** We grew the phalanx plant Carex neurocarpa and the guerrilla plant Bolboschoenus planiculmis alone or in competition in a heterogeneous environment consisting of high-and low-nutrient soil *** treatments without competition,one ramet of each species was grown in either a high-or a low-nutrient patch in the heterogeneous *** treatments with competition,a ramet of the target species was grown in either a high-or a low-nutrient patch,and a ramet of the competitor species was grown in the same patch as the target species or an adjacent patch with a different nutrient *** Findings Without competition *** produced more biomass and ramets when initially grown in a high-nutrient patch than when initially grown in a low-nutrient *** competition,these differences ***,competitive intensity on *** was higher when it initially grew in a high-nutrient patch than when it initially grew in a low-nutrient *** impacts were independent of the initial position of its *** contrast,the initial positions of *** did not influence its growth or competitive ***,in heterogeneous environments,initial growing positions of clonal plants may influence their performance in competition-free environments and may also affect their relative competitive ability,and these effects may depend on spatial architecture of the plants.

关键词： clonal plant competition environmental heterogeneity guerrilla patchy environment phalanx

Spatial heterogeneity in soil particle size:does it affect the yield of plant communities with different species richness?

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Journal of Plant Ecology 2016年第5期9卷 608-615页

作者： Wei Xue Lin Huang fei-hai yu School of Nature Conservation Beijing Forestry UniversityBeijing 100083China

Aims Soil heterogeneity is ubiquitous in many *** hypothesized that plant communities with higher species richness might be better adapted to soil heterogeneity and produce more biomass than those with lower *** is because there is niche differentiation among species and different species can complement each other and occupy a broader range of niches when plant species richness is ***,no study has tested how soil particle heterogeneity affects the yield of plant communities,and whether such effects depend on the spatial scale of the heterogeneity and the species richness within the *** In a greenhouse experiment,we sowed seeds of four-species or eight-species mixtures in three heterogeneous treatments consisting of 32,8 or 2 patches of both small(1.5 mm)and large quartz(3.0 mm)particles arranged in a chessboard manner and one homogeneous treatment with an even mixture of small and large quartz *** Findings Biomass production was significantly greater in the communities with high species richness than those with low species ***,soil particle heterogeneity or its interactions with patch scale or species richness did not significantly affect biomass production of the experimental *** work indicates that plant species richness may have a bigger impact on plant productivity than soil particle *** studies should consider multiple sets of plant species during longer time periods to unravel the potential mechanisms of soil heterogeneity and its interactions with the impacts of species richness on community yield and species coexistence.

关键词： diversity effect experimental communities environmental heterogeneity patch size soil particle heterogeneity spatial scale

Effects of soil substrate heterogeneity and moisture on interspecific competition between Alternanthera philoxeroides and four native species

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Journal of Plant Ecology 2017年第3期10卷 528-537页

作者： Lu Liu Bi-Cheng Dong Peter Alpert fei-hai yu School of Nature Conservation Beijing Forestry UniversityQinghua East Road 35Haidian DistrictBeijing 100083China Biology Department University of MassachusettsAmherstMA 01003USA

Aims Clonal plant species have the potential for high relative performance in heterogeneous environments,and this might increase the com-petitive ability and invasiveness of introduced clonal plant *** was hypothesized that clonal species whose performance responds more to heterogeneity of a resource have higher competitive ability in habitats where this resource is more heterogeneous and that this relationship is stronger when other resources are less *** To test these hypotheses,the perennial clonal herb Alternanthera philoxeroides,which is invasive in China,was grown alone or with each of four clonal perennial,co-occurring herbs native to China,*** sessilis,Cynodon dactylon,Hemarthria altissima and Wedelia *** were given homogeneous or het-erogeneous soil substrate crossed with low and high levels of soil *** Findings Effects of heterogeneity on the accumulation of mass and ramets and on competitive effect and response of *** differed between native species and interacted with effects of soil *** reduced the final total mass or ramet number of the native species except ***,and the negative competitive effects on *** and *** were more pronounced in heterogeneous than in homogeneous *** response of *** was more negative to *** than to the other native *** native species,the competitive response of *** was more negative in heterogeneous than in homo-geneous soils at low moisture level,but the reverse was true at high moisture *** do not consistently support either hypoth-esis,but do suggest that competitive ability can be partly explained by individual species traits such as size,and that some competi-tive effects and responses are emergent properties of interspecific interactions.

关键词： alligator weed clonal plant competitive effect competitive response soil heterogeneity soil moisture foraging behavior

Effects of clonal integration, nutrients and cadmium on growth of the aquatic macrophyte Pistia stratiotes

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Journal of Plant Ecology 2020年第6期13卷 765-772页

作者： Michael Opoku Adomako Peter Alpert Dao-Lin Du fei-hai yu Institute of Wetland Ecology&Clone Ecology/Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation Taizhou UniversityTaizhou 318000China Institute of Environment and Ecology Academy of Environmental Health and Ecological SecuritySchool of the Environment and Safety EngineeringJiangsu UniversityZhenjiang 212013China Department of Biology University of MassachusettsAmherstMA 01003USA

Aims Many wetlands are polluted with both nutrients and toxic metals and vegetated largely by clonal *** hypothesized that eutrophication and clonal integration can increase phytoremediation of toxic metal pollution by increasing plant growth,even under the stress imposed by *** To test this hypothesis,single ramets of the common,widespread,floating,stoloniferous plant Pistia stratiotes L.,were grown for 42 days at two levels of nutrient availability with and without 0.6 mg L^(-1) *** were either severed from their vegetative offspring to prevent clonal integration or left connected,and severed offspring were either removed to eliminate intraclonal competition or left in *** Findings Plants subjected to cadmium addition accumulated almost twice as much dry mass if given the higher nutrient level,due mainly to a doubling of the number of clonal *** had little effect on the final mass of the parent plus offspring *** offspring following severance had no effect on the final mass of the parental ramet in the presence of added cadmium,but it did increase the final mass of the parent in the absence of *** results support the hypothesis that eutrophication can increase remediation of toxic metal pollution by aquatic macrophytes but provided no evidence that clonal integration can affect *** such as *** may help remediate co-pollution of wetlands with toxic metals and nutrients,and fragmentation of clones may not affect their remediation capacity.

关键词： bioremediation clonal fragmentation eutrophication floating plant toxic metal

Interactions of the indigenous evergreen shrub Sabina vulgariswith coexisting species in the Mu Us sandland

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Journal of Plant Ecology 2013年第1期6卷 48-56页

作者： Lei Ning Chun-Xiang Liu Wei-Ming He fei-hai yu College of Nature Conservation Beijing Forestry UniversityBeijing 100083China State Key Lab of Vegetation and Environmental Change Institute of BotanyChinese Academy of SciencesBeijing 100093China Graduate University of Chinese Academy of Sciences Beijing 100039China

Aims Facilitation is widespread in plant communities and particularly common in highly stressful *** the semi-arid Mu Us sandland where soil water and nutrients are short and grazing is heavy,many species grow within the large patches formed by the dense individuals of the unpalatable clonal shrub Sabina vulgaris,the only natural evergreen shrub species in the Mu Us ***,the interactions between *** and these coexisting species remain unclear,and we hypothesize that *** can facilitate at least some species because within the patches vegetation is not grazed and soil water and nutrients may also be *** We measured the maximum height,coverage and number of individuals of each vascular species,little cover and thickness of biological crust at the soil surface in 1 m×1 m plots in three types of microsites associated with 40 patches of ***:(i)at the center,(ii)at the inner edge and(iii)outside the *** also took soil samples and measured soil water content and content of total N,P,K and organic *** Findings Soil water,nitrogen,organic matter and litter cover were the highest at the patch center,lowest outside the patches and intermediate at the inner edge of the patches,whereas thickness of biological crust was greater outside than at the center or at the inner *** the 32 species recorded,six species preferred to occur within the patches,suggesting that *** can facilitate these species most likely by grazing exclusion,increasing water and/or nitrogen resources in ***,most(19)species did not show preference and seven preferred ***,species richness,pooled cover and number of individuals of all species were greater outside than within the patches,and such effects did not vary with the size of the *** *** results suggest that the dominant interactions between *** and the coexisting species are *** findings add to our knowledge that fa

关键词： competition facilitation facilitative effects island of fertility plant-plant interactions resource islands semi-arid land

Clonal Transgenerational Effects Transmit for Multiple Generations in a Floating Plant

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Phyton-International Journal of Experimental Botany 2023年第5期92卷 1589-1601页

作者： Xiao-Mei Zhang yu Jin Wei Xue Jun-Qin Gao Ning-fei Lei Jin-Song Chen fei-hai yu College of Life Science Sichuan Normal UniversityChengdu610101China Institute of Wetland Ecology&Clone Ecology Taizhou UniversityTaizhou318000China School of Ecology and Nature Conservation Beijing Forestry UniversityBeijing100083China College of Ecology and Environment Chengdu University of TechnologyChengdu610059China

Environmental conditions of a parent plant can influence the performance of their clonal offspring,and such clonal transgenerational effects may help offspring adapt to different ***,it is still unclear how many vegetative generations clonal transgenerational effects can transmit for and whether it depends on the environmental conditions of the *** grew the ancestor ramets of the floating clonal plant Spirodela polyrhiza under a high and a low nutrient level and obtained the so-called 1^(st)-generation offspring ramets of two types(from these two environments).Then we grew the 1^(st)-generation offspring ramets of each type under the high and the low nutrient level and obtained the so-called 2^(nd)-generation offspring ramets of four *** repeated this procedure for another five times and analyzed clonal transgenerational effects on growth,morphology and biomass allocation of the 1^(st)-to the 6^(th)-generation offspring *** found positive,negative or neutral(no)transgenerational effects of the ancestor nutrient condition on the offspring of ***,depending on the number of vegetative generations,the nutrient condition of the offspring environment and the traits *** observed significant clonal transgenerational effects on the 6^(th)-generation offspring;such effects occurred for all three types of traits(growth,morphology and allocation),but varied depending on the nutrient condition of the offspring environment and the traits *** results suggest that clonal transgenerational effects can transmit for multiple vegetative generations and such impacts can vary depending on the environmental conditions of offspring.

关键词： Clonal plant clonal parental effect maternal effect transgenerational plasticity multi-generation experiment

Does hydrological fluctuation alter impacts of species richness on biomass in wetland plant communities?

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Journal of Plant Ecology 2016年第4期9卷 434-441页

作者： Fang-Li Luo Xing-Xing Jiang Hong-Li Li fei-hai yu School of Nature Conservation Beijing Forestry UniversityBeijing 100083China

Aims The diversity-productivity relationship is one of the most critical questions in ecology and can be altered by environmental *** fluctuation affects growth of wetland plants,and such effects vary with plant ***,we hypothesized that hydrological fluctuation changes effects of species richness on productivity of wetland plant *** We constructed wetland plant communities consisting of three or six wetland plant species and subjected them to hydrological fluctuation(*** changing water level)of two frequencies and two ranges,with unchanged water level as the *** measured height,root and shoot dry mass of each plant at *** Findings Hydrological fluctuation significantly decreased biomass of wetland plant communities,which was due to impacts of fluctuation range,but not those of fluctuation *** biomass was significantly higher when species richness was higher,and such an effect did not depend on hydrological ***,hydrological fluctuation can decrease the productivity of wetland plant communities but may not alter the diversity-productivity relationship.

关键词： diversity effects diversity-productivity relationship experimental plant communities flooding fluctuation frequency fluctuation range water depth change

Adaptive plasticity in response to light and nutrient availability in the clonal plant Duchesnea indica

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Journal of Plant Ecology 2022年第4期15卷 795-807页

作者： Mo-Zhu Wang Hong-Li Li Chun-Xiang Liu Bi-Cheng Dong fei-hai yu Institute of Wetland Ecology&Clone Ecology Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and ConservationTaizhou UniversityTaizhou 318000China School of Ecology and Nature Conservation Beijing Forestry UniversityBeijing 100083China State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of SciencesBeijing 100093China

Phenotypic plasticity enables plants to buffer against environmental stresses and match their phenotypes to local ***,consistent conclusive evidence for adaptive plasticity has only been obtained for a few *** studies on a wider variety of plant functional traits and environmental factors are still needed to further understand the adaptive significance of *** grew 21 genotypes of the stoloniferous clonal plant Duchesnea indica under different light and nutrient conditions,and used selection gradient analyses to test the adaptive value(benefits)of morphological and physiological plasticity responding to variation in light and nutrient *** grown in shade exhibited lower values for fitness measures(fruit number,ramet number and biomass),shortened thinner internode length and decreased adult leaf chlorophyll content,but higher petiole length,specific leaf area and old leaf chlorophyll content,than plants grown without *** grown in the low nutrient condition had shorter petiole length,thicker and smaller leaf area,lower chlorophyll content,but higher fruit number and root:shoot ratio than plants grown under the high nutrient *** gradient analyses revealed that plasticity of petiole length and old leaf chlorophyll content in response to light variation was adaptive,and plasticity of old and adult leaf chlorophyll content in response to nutrient variation was ***,the adaptive value of plasticity in different traits depends on the specific ecological *** findings contribute to understanding the adaptive significance of phenotypic plasticity of clonal plants in response to environmental variation.

关键词： adaptive plasticity clonal plants Duchesnea indica stoloniferous plant phenotypes

Species-specific phenological responses to long-term nitrogen fertilization in an alpine meadow

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Journal of Plant Ecology 2017年第2期10卷 301-309页

作者： Tan-Feng Yin Li-Li Zheng Guang-Min Cao Ming-Hua Song fei-hai yu Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesA11Datun RoadChaoyang DistrictBeijing 100101China School of Nature Conservation Beijing Forestry University35 East Qinghua RoadHaidian DistrictBeijing 100083China University of Chinese Academy of Sciences No.19 Yuquan RoadBeijing 100039China Northwest Institute of Plateau Biology Chinese Academy of Sciences59 Xiguan DajieXining 810008China

Aims Long-term nitrogen(N)fertilization has profound impacts on com-munity structure and ecosystem function,but little is known about its effects on plant ***,no published study has examined effects of N chemical forms on plant *** in an alpine meadow on the Tibetan Plateau,we monitored reproductive phenology of six common plant species after 8 years of fertilization with different N chemical forms(addition of 7.5 g N m^(−2) yr^(−1) in the forms of ammonium,nitrate and ammonium nitrate),with no N addition as the *** Findings Eight years of N fertilization affected plant reproductive phenology,and such effects depended on the species,N form and phenological *** with ammonium generally delayed,advanced or did not change flowering and fruiting phases of the alpine ***,fertilization with ammonium affected the temporal dispersion of reproductive phenology among the six species,espe-cially among the late-flowering *** could reduce the overlap of flowering and fruiting and increase phenological *** with nitrate only delayed the senescence phase of Elymus nutans,and fertilization with ammonium nitrate did not affect reproductive phenology of the six alpine plants.N fertilization with any form increased the overlap in senescence among the six *** conclude that long-term N fertilization can cause shifts in plant phenology and such effects depend on N chemical *** results also suggest that phenological comple-mentarity could be a mechanism underlying resource partitioning and thus species coexistence in the face of changing N availability with different chemical forms.

关键词： reproductive phenology fertilization nitrogen forms temporal dispersion in phenology alpine meadow