Ring-testing and Field-validation of a Terrestrial Model Ecosystem(TME) – An Instrument for Testing Potentially Harmful Substances: Effects of Carbendazim on Organic Matter Breakdown and Soil Fauna Feeding Activity
| Autor: | Cornelis A.M. van Gestel, José M.L. Rodrigues, Gerrit Nentwig, J. Paulo Sousa, J.E. Koolhaas, Thomas Knacker, Bernhard Förster, Susan E. Jones |
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| Přispěvatelé: | Animal Ecology |
| Jazyk: | angličtina |
| Rok vydání: | 2004 |
| Předmět: |
Health
Toxicology and Mutagenesis Soil biology Soil science Management Monitoring Policy and Law Toxicology Grassland Lethal Dose 50 chemistry.chemical_compound Animal science Ecotoxicology Animals Soil Pollutants Organic matter Ecosystem Organic Chemicals Soil Microbiology chemistry.chemical_classification geography Topsoil geography.geographical_feature_category Carbendazim General Medicine Feeding Behavior Invertebrates Fungicides Industrial chemistry Environmental science Benzimidazoles Carbamates Soil microbiology |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP Förster, B, van Gestel, C A M, Koolhaas, J E, Nentwig, G, Rodrigues, J M L, Sousa, J P, Jones, S E & Knacker, T 2004, ' Ring-testing and field-validation of a terrestrial model ecosystem-An instrument for testing potentially harmful substances: effects of carbendazim on organic matter breakdown and soil fauna feeding activity. ', Ecotoxicology, vol. 13, pp. 129-141 . https://doi.org/10.1023/B:ECTX.0000012410.99020.97 Ecotoxicology, 13, 129-141. Springer Netherlands |
| ISSN: | 0963-9292 |
| DOI: | 10.1023/B:ECTX.0000012410.99020.97 |
| Popis: | Organic matter (OM) decomposition and soil fauna feeding activity were integrated as functional endpoints into ecotoxicological tests with intact-soil-core Terrestrial Model Ecosystems (TMEs). Cellulose filter paper served as standardized OM and was either inserted into the top soil or placed on the soil surface for a period of up to 16 weeks. Faunal feeding activity was assessed by the bait-lamina method. The fungicide carbendazim, applied at six dosages ranging from 0.36 kg/ha to 87.5 kg a.i./ha, served as a model chemical. To validate the results from the TME test, a field study was run in parallel. In TMEs the cellulose paper inserted into the soil was decomposed faster than under field conditions. The carbendazim-induced effects on OM decomposition in TMEs and in the field were comparable and followed a clear dose–response relationship. The calculated EC50 values after 8 weeks of incubation were 9.5, 7.1 and 2.1 kg carbendazim/ha for grassland TMEs, grassland field and arable TMEs, respectively. The feeding activity of the soil fauna showed a large variability. The EC50 values for the effect of carbendazim on bait-lamina consumption ranged between 2.0 and 56 kg a.i./ha. Effects on decomposition were correlated with effects on enchytraeids and earthworms but not with effects on bait-lamina consumption. |
| Databáze: | OpenAIRE |
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