Effects of toxaphene on soil microorganisms in laboratory incubation test

ČERNOHLÁVKOVÁ, Jitka, Jakub HOFMAN, Jitka BEZCHLEBOVÁ, Ladislav DUŠEK and Ivan HOLOUBEK. Effects of toxaphene on soil microorganisms in laboratory incubation test. In Abstract Book of SETAC Europe the 16th Annual Meeting. 2006.

Basic information

• Original name: Effects of toxaphene on soil microorganisms in laboratory incubation test
• Name in Czech: Efekty toxafenu na půdní organismy v laboratorním inkubačním testu
• Authors: ČERNOHLÁVKOVÁ, Jitka (203 Czech Republic), Jakub HOFMAN (203 Czech Republic, guarantor), Jitka BEZCHLEBOVÁ (203 Czech Republic), Ladislav DUŠEK (203 Czech Republic) and Ivan HOLOUBEK (203 Czech Republic).
• Edition: Abstract Book of SETAC Europe the 16th Annual Meeting, 2006.

Other information

• Original language: English
• Type of outcome: Conference abstract
• Field of Study: 10511 Environmental sciences
• Country of publisher: Czech Republic
• Confidentiality degree: is not subject to a state or trade secret
• RIV identification code: RIV/00216224:14310/06:00016308
• Organization unit: Faculty of Science
• Keywords in English: soil microbiology; toxaphene
• Tags: soil microbiology, toxaphene
• Tags: International impact

Abstract

Toxaphene is a nonspecific organochlorinated insecticide that was widely used in agriculture mostly in 70s. Due to its lipophilic, semivolatile and persistent properties is present in aquatic and terrestrial ecosystems all over the world until nowadays in significant residues. Toxaphene is toxic for aquatic organisms, but there is a lack of information about its impact on soil ecosystem. The aim of our study was to determine the effects on soil indigenous microflora. Natural soil was spiked with 1 - 1000 mg/kgdw of toxaphene. Effects on various microbial parameters (microbial biomass Cbio, basal and substrate-induced respiration, anaerobic and potential ammonification and nitrification) were measured after 28 days of incubation under controlled laboratory conditions. No significant inhibition effect was observed even at the highest tested concentration. It seems that lower concentration (1 – 100 mg/kgdw) of toxaphene added to soil stimulated microbial activities (respiration, ammonification). According to our results, the risk that contemporary toxaphene residues in soils may harmfully affect soil microorganisms is negligible. This research was supported by Grant Agency of Czech Republic project 525/04/P159.

Abstract (in Czech)

Toxaphene is a nonspecific organochlorinated insecticide that was widely used in agriculture mostly in 70s. Due to its lipophilic, semivolatile and persistent properties is present in aquatic and terrestrial ecosystems all over the world until nowadays in significant residues. Toxaphene is toxic for aquatic organisms, but there is a lack of information about its impact on soil ecosystem. The aim of our study was to determine the effects on soil indigenous microflora. Natural soil was spiked with 1 - 1000 mg/kgdw of toxaphene. Effects on various microbial parameters (microbial biomass Cbio, basal and substrate-induced respiration, anaerobic and potential ammonification and nitrification) were measured after 28 days of incubation under controlled laboratory conditions. No significant inhibition effect was observed even at the highest tested concentration. It seems that lower concentration (1 – 100 mg/kgdw) of toxaphene added to soil stimulated microbial activities (respiration, ammonification). According to our results, the risk that contemporary toxaphene residues in soils may harmfully affect soil microorganisms is negligible. This research was supported by Grant Agency of Czech Republic project 525/04/P159.

Links

• GP525/04/P159, research and development project: Name: Vliv nově rozpoznávaných prioritních perzistentních organických polutantů (POPs) na organismy v půdním ekosystému

Investor: Czech Science Foundation, Effects of newly recognized priority persistent organic pollutants (POPs) on organisms of soil ecosystem

• MSM0021622412, plan (intention): Name: Interakce mezi chemickými látkami, prostředím a biologickými systémy a jejich důsledky na globální, regionální a lokální úrovni (INCHEMBIOL) (Acronym: INCHEMBIOL)

Investor: Ministry of Education, Youth and Sports of the CR, Interactions among the chemicals, environment and biological systems and their consequences on the global, regional and local scales (INCHEMBIOL)