Effect of tillage and farming management on Collembola in marsh soils |
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| Affiliation: | 1. Yunnan Key Laboratory for Palaeobiology, Yunnan University, Kunming 650091, China;2. State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China;3. DAStietz, Museum für Naturkunde, Moritzstraße 20, D-09111 Chemnitz, Germany;4. TU Bergakademie Freiberg, Institut für Geologie, B.v. Cotta-Straße 2, D-09596 Freiberg, Germany;5. Kazan Federal University, 18, Kremlevskaya St., Kazan 420008, Russian Federation;6. Department of Paleobiology, Smithsonian Institution, Washington, DC 20013, USA;7. Department of Entomology, University of Maryland, College Park, MD 20742, USA;8. College of Life Sciences, Capital Normal University, Beijing 100048, China;1. MARE – Marine and Environmental Sciences Centre, ESTM, Polytechnic Institute of Leiria, Peniche, Portugal;2. Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Portugal;3. Department of Ecological Science, Vrije Universiteit, Amsterdam, the Netherlands;4. REQUIMTE/LAQV, Faculty of Pharmacy, University of Coimbra, Portugal;5. ECT Oekotoxikologie GmbH, Flörsheim, Germany |
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| Abstract: | The Sanjiang Plain, the second largest marsh in China, has experienced intensive cultivation over the past 50 years. Most of the marshlands were converted to soybean and rice fields. However, little is known about the effects of tillage on the soil fauna. 9 treatments, including original marshland soil, rice and soybean cultivation with and without fertilizer and herbicide applications, were imitated with 135 buckets under greenhouse conditions. The soil characteristics and Collembola in these treatments were investigated for one plant growth season.The soil environment was deteriorated (as indicated by the decreased soil oxidizable organic matter, total nitrogen and soil water content and increased soil compaction) by soybean and rice cultivation treatments. The densities and species richness of Collembola significantly decreased in the rice cultivation treatments but not in the soybean cultivation treatments. For the soybean cultivation treatments, density and species richness of the soil Collembola significantly increased in the fertilizer, herbicide and fertilizer + herbicide application treatments. It probably caused by increasing root and shoot biomass in these treatments.It is concluded that the tillage treatments in a wetland soil had both qualitative and quantitative adverse effects on the soil collembolans, and these effects might further alter the soil ecological processes. |
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