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Integration and scaling of uv-b radiation effects on plants: the relative sensitivity of growth forms and interspecies interactions

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Journal of Plant Ecology 2018年第4期11卷 656-670页

作者： Vasile Alexandru Suchar Ronald Robberecht Department of Statistical Science College of ScienceUniversity of Idaho875 Perimeter Drive MS1104MoscowID 83844-1104USA Department of Forest Rangelandand Fire SciencesCollege of Natural ResourcesUniversity of Idaho875 Perimeter Drive MS1133MoscowID 83844-1133USA

Aims the relative plant type sensitivity and selected community interac-tions under increased uv-b radiation where ***,we investigated:(i)if there are differences among growth forms in regard to their sensitivity to uv-b radiation,(ii)if increased uv-b radiation influences the plant competitive balance in plant com-munities and(iii)the response mechanisms of the uv-b radiation-sensitive species that might increase their *** to answer our research questions,we used a mechanistic model that,for the first time,integrated the effects of increased uv-b radia-tion from molecular level processes,whole plant growth and devel-opment,and community *** Findings In the model simulations,species types exhibited different levels of sensitivity to increased uv-b *** C3 and C4 annuals showed similar growth inhibition rates,while biennials and winter C3 annuals were the most *** exhibited inhibitions in growth only if increased uv-b radiation results in increases in metabolic *** communities,species sensitive to uv-b radiation may have a competitive disadvantage compared to resistant plant ***,sensitive species may have a wide array of responses that can increase their fitness and reproductive success in the com-munity,such as,increased secondary metabolites production,changes in timing of emergence and reproduction,and changes in seed *** individual plants may exhibit significant inhibi-tions in growth and development,in communities,these inhibitions can be mitigated by small morphological and physiological *** or occasional increased uv-b radiation events should not have any lasting effect on the structure of the commu-nity,unless other environmental factors are perturbing the dynamic equilibrium.

关键词： uv-b radiation effects plant growth and development simulation modeling relative sensitivity competition

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