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Effects of acid deposition on the avoidance behavior of Folsomia candida (Collembola, Isotomidae)

Soil Ecology Letters 2022年第2期4卷 164-170页

作者： Xiaofeng Luo Linglong Zhu Guoliang Xu Jiaen Zhang Jianlong Xu Shiqin Yu Xiaohua Chen School of Geographical Science and Remote Sensing Guangzhou UniversityGuangzhou 510006China guangdong province rural water environment non-point source pollution comprehensive treatment engineering technology research center Guangzhou 510006China guangdong Provincial Key Laboratory of Eco-circular Agriculture South China Agricultural UniversityGuangzhou 510642China

Excessive acid deposition causes soil acidification,and changes the soil microhabitat,thus affecting the survival and reproduction of soil *** candida(Collembola,Isotomidae),as a model organism,is widely used to assess the chemical toxicity in soil,and its avoidance response can indicate the environmental *** this study,we used Folsomia candida to assess the risks of acid deposition on soil *** pH(3.0,3.5,4.0,4.5,5.0,and 5.5)treatments were set up in petri dish experiments,and the avoidance behavior of Folsomia candida was measured after 12,24,and 48 h exposure to the pH *** results indicated that(1)both the exposure duration and pH level influenced avoidance behavior of collembolan.(2)After 12 h exposure,most of the individuals showed avoidance behavior but without significant differences among the treatments.(3)After 24 h exposure,significant avoidance behavior was observed at pH 3.0,3.5,and 4.0.(4)After 48 h exposure,avoidance behavior was found in all treatment conditions except for pH *** study clarified the direct responses of soil fauna to acid deposition,and indicated that both pH and length of exposure influenced the avoidance behavior of Folsomia *** the experimental period,the collembolan reacted negatively and showed consistent avoidance behavior at pH 3.0,3.5,and *** avoidance behavior was apparent between pH 4.5 and 5.0 and not observed at pH 5.5,indicating that the latter was the preferred pH environment.

关键词： Collembolan Acid rain Behavioral avoidance

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