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Titolo:
Effects of soil organic matter content and temperature on toxicity of dimethoate to Folsomia fimetaria (Collembola : Isotomiidae)
Autore:
Martikainend, EAT; Krogh, PH;
Indirizzi:
Univ Jyvaskyla, Inst Environm Res, SF-40351 Jyvaskyla, Finland Univ Jyvaskyla Jyvaskyla Finland SF-40351 s, SF-40351 Jyvaskyla, Finland Natl Environm Res Inst, DK-8600 Silkeborg, Denmark Natl Environm Res InstSilkeborg Denmark DK-8600 8600 Silkeborg, Denmark
Titolo Testata:
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
fascicolo: 5, volume: 18, anno: 1999,
pagine: 865 - 872
SICI:
0730-7268(199905)18:5<865:EOSOMC>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
EARTHWORMS; CADMIUM; COPPER; PH;
Keywords:
organic matter; temperature; chemical toxicity; collembolan; soil;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
44
Recensione:
Indirizzi per estratti:
Indirizzo: Martikainend, EAT Univ Jyvaskyla, Inst Environm Res, POB 35, SF-40351 Jyvaskyla, Finland Univ Jyvaskyla POB 35 Jyvaskyla Finland SF-40351 inland
Citazione:
E.A.T. Martikainend e P.H. Krogh, "Effects of soil organic matter content and temperature on toxicity of dimethoate to Folsomia fimetaria (Collembola : Isotomiidae)", ENV TOX CH, 18(5), 1999, pp. 865-872

Abstract

The purpose of these experiments was to study the effects of two major environmental factors, soil organic matter content (1.4-8.6%) and temperature (10-20 degrees C), on chemical toxicity to a soil-dwelling collembolan Folsomia fimetaria. Dimethoate was used as a reference chemical. Effects on survival, reproduction, and juvenile size were investigated. Increasing soil organic matter content reduced toxicity significantly, but the differences disappeared when results were recalculated and expressed as soil pore-water concentrations. This supported the soil pore-water hypothesis. The effects of soil temperature were not so clear, because temperature affects nor onlythe growth and reproduction of the collembolan but also the chemical degradation. In general, decreasing temperature seemed to increase toxic effects. The procedure for toxicity testing with F. fimetaria was further improvedby using adults at stage 7 to 8, when males and females could reliably be distinguished by size. Furthermore, image processing was applied for the first time in the counting and size measurements of the collembolans.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/09/20 alle ore 04:55:26