Soil microbial respiration and PICT responses to an industrial and historic lead pollution: a field study
- 2 August 2015
- journal article
- Published by Springer Science and Business Media LLC in Environmental Science and Pollution Research
- Vol. 23 (5), 4271-4281
- https://doi.org/10.1007/s11356-015-5089-z
Abstract
We performed a field investigation to study the long-term impacts of Pb soil contamination on soil microbial communities and their catabolic structure in the context of an industrial site consisting of a plot of land surrounding a secondary lead smelter. Microbial biomass, catabolic profiles, and ecotoxicological responses (PICT) were monitored on soils sampled at selected locations along 110-m transects established on the site. We confirmed the high toxicity of Pb on respirations and microbial and fungal biomasses by measuring positive correlations with distance from the wall factory and negative correlation with total Pb concentrations. Pb contamination also induced changes in microbial and fungal catabolic structure (from carbohydrates to amino acids through carboxylic malic acid). Moreover, PICT measurement allowed to establish causal linkages between lead and its effect on biological communities taking into account the contamination history of the ecosystem at community level. The positive correlation between qCO2 (based on respiration and substrate use) and PICT suggested that the Pb stress-induced acquisition of tolerance came at a greater energy cost for microbial communities in order to cope with the toxicity of the metal. In this industrial context of long-term polymetallic contamination dominated by Pb in a field experiment, we confirmed impacts of this metal on soil functioning through microbial communities, as previously observed for earthworm communities.This publication has 54 references indexed in Scilit:
- Assessing ecotoxicity and uptake of metals and metalloids in relation to two different earthworm species (Eiseina hortensis and Lumbricus terrestris)Environmental Pollution, 2013
- Microbial community structure and functioning along metal pollution gradientsEnvironmental Toxicology and Chemistry, 2013
- DYNAMICS OF THREE ORGANIC ACIDS (MALIC, ACETIC AND SUCCINIC ACID) IN SUNFLOWER EXPOSED TO CADMIUM AND LEADInternational Journal of Phytoremediation, 2013
- Influence of soil ageing on bioavailability and ecotoxicity of lead carried by process waste metallic ultrafine particlesChemosphere, 2011
- Use of the MicroResp™ method to assess pollution-induced community tolerance to metals for lotic biofilmsEnvironmental Pollution, 2011
- Short-time effect of heavy metals upon microbial community activityJournal of Hazardous Materials, 2010
- Heavy metals and soil microbesSoil Biology and Biochemistry, 2009
- Interactions between metals and soil organic matter in various particle size fractions of soil contaminated with waste waterGeoderma, 2009
- Study of the trace metal ion influence on the turnover of soil organic matter in cultivated contaminated soilsEnvironmental Pollution, 2006
- Cellular mechanisms for heavy metal detoxification and toleranceJournal of Experimental Botany, 2002