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Soil contamination with olive mill wastes negatively affects microbial communities, invertebrates and plants

Hentati, Olfa ; Oliveira, Vanessa ; Sena, Clara ; Bouji, Mohamed Seddik Mahmoud ; Wali, Ahmed ; Ksibi, Mohamed

Ecotoxicology (London), 2016-10, Vol.25 (8), p.1500-1513 [Peer Reviewed Journal]

New York: Springer US

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Title:
Soil contamination with olive mill wastes negatively affects microbial communities, invertebrates and plants
Author: Hentati, Olfa ; Oliveira, Vanessa ; Sena, Clara ; Bouji, Mohamed Seddik Mahmoud ; Wali, Ahmed ; Ksibi, Mohamed
Subjects: Agriculture ; Analysis ; Animals ; Arthropods - physiology ; Earth and Environmental Science ; Ecology ; Ecosystem ; Ecotoxicology ; Eisenia fetida ; Enchytraeus crypticus ; Environment ; Environmental Management ; Environmental Monitoring ; Folsomia candida ; Industrial Waste ; Industrial wastes ; Invertebrata ; Lycopersicon esculentum ; Olea ; Oligochaeta - physiology ; Phenolphthalein ; Physiological aspects ; Ponds ; Salinity ; Soil ; Soil Microbiology ; Soil Pollutants - toxicity ; Soil pollution
Is Part Of: Ecotoxicology (London), 2016-10, Vol.25 (8), p.1500-1513
Notes: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Description: The aim of the present study was to evaluate the ecotoxicological effects of olive mill waste (OMW) on soil habitat function. To this end, soil samples from OMW evaporating ponds (S1–S5) located at Agareb (Sfax, Tunisia) and a reference soil (R) were collected. The effects of OMW on the springtails Folsomia candida (F.c.), the earthworm species Eisenia fetida (E.f.), Enchytraeus crypticus (E.c.) reproduction and on the soil living microbial communities were investigated. E.f. reproduction and tomato growth assays were performed in the reference soil amended with 0.43 to 7.60 % (w OMW /w ref-soil ) mass ratios of dried OMW. Changes in microbial function diversity were explored using sole-carbon-source utilization profiles (BiologEcoPlates ® ). E.f. absolutely avoided (100 %) the most polluted soil (S4) while the F.c. moderately avoided (37.5 ± 7.5 %) the same soil. E.c. reproduction in S4 was significantly lower than in S1, S2, S3 and S5, and was the highest in R soil. Estimated effect concentration EC 50 for juveniles’ production by E.f., and for tomato fresh weight and chlorophyll content were 0.138, 0.6 and 1.13 %, respectively. Community level physiological profiles (CLPPs) were remarkably different in R and S4 and a higher similarity was observed between soils S1, S2, S3 and S5. Principal component analysis (PCA) revealed that differences between soil microbial functional diversity were mainly due to high polyphenol concentrations, while the salinity negatively affected E.c. reproduction in OMW contaminated soils. These results clearly reflect the high toxicity of dried OMW when added to agricultural soils, causing severe threats to terrestrial ecosystem functions and services provided by invertebrates and microbial communities.
Publisher: New York: Springer US
Language: English

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Soil contamination with olive mill wastes negatively affects microbial communities, invertebrates and plants

Hentati, Olfa ; Oliveira, Vanessa ; Sena, Clara ; Bouji, Mohamed Seddik Mahmoud ; Wali, Ahmed ; Ksibi, Mohamed

New York: Springer US

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