Microhabitat effect on iron distribution and transfer in <Emphasis Type="Italic">Carex pseudocuraica</Emphasis> in Sanjiang Plain Wetlands |
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| Authors: | Yuanchun Zou Xianguo Lu Ming Jiang Xiaofei Yu |
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| Institution: | [1]Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology Chinese Academy of Sciences, Changchun 130012, China [2]Graduate University of the Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | Ten clonal units of Carex pseudocuraica growing in four different microhabitats (perennial flooded ditch water, perennial flooded ditch sediment, seasonal flooded
ditch sediment and perennial flooded soil) of the Sanjiang Plain, Northeast China, were collected randomly for phenotypic
plasticity analysis. Iron content, chemical and physical properties of substrates and the total Fe of nine plant modules were
measured as well. The results show that the performance of the C. pseudocuraica is affected by the microhabitat, with the greatest performance score in perennial flooded ditch water, and the lowest in
perennial flooded soil. The biomass allocation indexes indicate that much more mass is allocated to stems and roots to expand
colonization area. The distribution of the total Fe in plant modules appears as pyramids from the tip to the root, while marked
differences are observed in the distribution proportion of stems, tillering nodes and roots that are allometrically growing.
Iron transfer from substrates to the plant is mainly controlled by the substrate type. The differences of iron distribution
and transfer in the plant in different microhabitats are attributed to the iron contents of the substrates as well as the
phenotypic plasticity of the plant. |
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| Keywords: | iron distribution iron transfer Carex pseudocuraica Sanjiang Plain |
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