Ecology, Environment and Conservation Paper

Vol 25, Nov Suppl. Issue, 2019; Page No.(309-318)

SPECIES PREFERABLE LOCATION REVEALED USING FOLIAR HYDROGEN PEROXIDE CONCENTRATION

Lekkala Vamsi Krishna and Takashi Asaeda

Abstract

Riparian vegetation is recruited at the flood time, and grow little later as and when suitable condition and location for survival has obtained. Understanding the environmental condition of riparian vegetation to grow is an important issue. Riparian vegetation along an elevation gradient is constantly subjected to environmental stresses and reactive oxygen species are generated following the intensity of the stresses. The current study examined the effect of elevation on riparian vegetation communities along the Hii River in Japan by quantifying the environmental stresses, using foliar hydrogen peroxide concentrations. Four common riparian species, Phragmites australis, Phragmites karka, Juglans mandshurica, and Salix pierotii, were used for the investigation. Leaf samples were collected from all four species at different elevations along the riverine. The results indicated that compared to the same species living at high elevations, P. australis, P. karka, and S. pierotii at low elevations with higher moisture content had lower hydrogen peroxide contents, indicating low levels of stress. J. mandshurica showed the opposite trend; this species had a higher concentration of hydrogen peroxide at lower elevations. However, J.mandshurica had a higher hydrogen peroxide content more clearly with decreasing soil nitrogen concetration, indicating that J.mandshurica preferred highly fertile soil, especially with regard to the nitrogen content. This clearly indicates that for J. mandshurica, the preferential location and stress was mainly based on soil nutrient availability. Our findings reveal that hydrogen peroxide is a very efficient and reliable index for quantifying environmental stress for vegetation management.

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