Effect of soil properties, heavy metals and emerging contaminants in the soil nematodes diversity

Gutiérrez, Carmen; Fernández, Carlos; Escuer, Miguel; Campos‐Herrera, Raquel; Beltrán, Eulalia María; Carbonell, Gregoria; Martín, José Antonio Rodríguez

doi:10.1016/j.envpol.2016.02.012

Cited by 84 publications

(33 citation statements)

References 58 publications

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“…Apart from being a relevant source of income for local and national economy, gold‐mining may be responsible for several environmentally harmful effects, including pollution from heavy metals and metalloids (HMMs), tailing dumping, soil erosion, and subsequent river damage or landscape deterioration (Gutiérrez et al, ). Hg is among the most relevant environmental contaminants released from AGM.…”

Section: Introductionmentioning

confidence: 99%

Artisanal gold‐mining in a rural environment: Land degradation in Kenya

Odumo

Nanos²,

Carbonell³

et al. 2018

Land Degrad Dev

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Artisanal gold‐mining (AGM) is one of the most important activities in the districts of Migori and Transmara (Kenya). Gold‐mining, however, is known to release vast quantities of arsenic and metals (some of which are very toxic like As, Hg, Cd, or Pb), which poses a serious threat to not only miners but also to the ecosystem and local populations. We, herein, determine the concentrations of arsenic and some heavy metals in several sample types (i.e., ore, soil, river sediment, and mine tailing) collected from the districts of Migori and Transmara. We also employ lichens and mosses as pollution bioindicators. Geostatistical tools and canonical correlation analysis were used to identify the relevant factors that affected arsenic and metal concentrations in the analysed samples. The following concentration ranges were reported in topsoil: As (1–17,250 mg kg−1), Cd (0.01–15.10 mg kg−1), Cu (7–9,238 mg kg−1), Cr (1–214 mg kg−1), Ni (5–766 mg kg−1), Pb (3–1,149 mg kg−1), and Zn (22–1,271 mg kg−1). It was concluded that the ecosystem in both districts was highly polluted by heavy metals whereas the arsenic concentrations in topsoil were among the highest reported worldwide. The results of this study provide new evidence on the impact of AGM on the environment and may further contribute to the design of policy measures with the aim of reducing environmental and human health risks associated to AGM activities.

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Section: Introductionmentioning

confidence: 99%

Artisanal gold‐mining in a rural environment: Land degradation in Kenya

Odumo

Nanos²,

Carbonell³

et al. 2018

Land Degrad Dev

Self Cite

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“…Bongers et al considered that disturbance would increase the PPI/MI value of a soil nematode community, whereas the PPI/MI value of an undisturbed natural environment would be lower than that of a disturbed environment [33]. Plants optimally use nutrient resources when the PPI/MI values are close to 0.9, whereas the PPI/MI values near 1.2 indicate slight nutrient disturbances [12]. As shown in this study, the PPI/MI values of the closed canopy and small gaps were significantly higher than those of the medium and large gaps (Table 3), which indicated that the environment of the medium and large gaps was relatively stable or less disturbed.…”

Section: Discussionmentioning

confidence: 99%

“…Numerous studies have suggested that the composition and structure of the nematode community are sensitive ecological indicators that can be used to determine the integrated effects of disturbances on small-scale spatial variations in the decomposer community in forest ecosystems [8][9][10]. The main reasons are that (1) soil nematodes are the Earth's most abundant metazoan and respond rapidly to environmental changes (e.g., warming, drought, and land-use change) and (2) their feeding specificity and high number of species play an indispensable role in the soil decomposer food web, such as by regulating the microbial community structure [11,12]. Furthermore, multitudinous studies have reported that nematode communities are greatly affected by the spatial and temporal patterns of soil moisture and temperature.…”

Section: Introductionmentioning

confidence: 99%

Forest Gap Size Alters the Functional Diversity of Soil Nematode Communities in Alpine Forest Ecosystems

Shen

Yang

Zhang

et al. 2019

Forests

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Changes in the microenvironment driven by forest gaps have profound effects on soil nutrient cycling and litter decomposition processes in alpine forest ecosystems. However, it is unclear whether a similar forest gap effect occurs in the soil decomposer community. A field experiment was conducted in an alpine forest to investigate the composition and structure of the soil nematode community among four treatments, including under a closed canopy and in small (<10 m in diameter), medium (10‒15 m in diameter), and large (15‒20 m in diameter) gaps. A total of 92,787 individuals and 27 species (genera level) of soil nematode were extracted by elutriation and sugar centrifugation, respectively. Filenchus was the most abundant dominant taxa and represented 24.27%‒37.51% of the soil nematodes in the four treatments. Compared to the closed canopy, the forest gaps did not affect the composition, abundance, or species diversity of the soil nematode community but significantly affected the functional diversity of the soil nematode community. The maturity indices (MI, ∑MI, and MI2‒5) of the soil nematode community in the closed canopy were significantly lower than those in the forest gaps. Moreover, the proportion of plant parasitic index and maturity index (PPI/MI) values of the closed canopy and small gaps were significantly higher than those of the medium and large gaps. Our results suggest that the forest gap size substantially alters the functional diversity of soil nematodes in the debris food web, and changes in soil nematode community structure due to gap formation may have profound effects on soil biogeochemical processes in alpine forests.

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“…Algunos investigadores consideraban al suelo como un recurso con capacidad ilimitada para soportar y asimilar contaminantes, característica que se ha desestimado actualmente, debido a que las propiedades químicas del suelo están influenciadas por el ambiente y por la dinámica antrópica, lo que lo convierte en un sistema dinámico en el espacio y en el tiempo (Montanarella, 1999;Brevik et al, 2015;Gutiérrez et al, 2016).…”

Section: Introductionunclassified

Análisis de estudios en metales pesados en zonas agrícolas de Colombia

2017

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El recurso suelo oferta servicios ecosistémicos fundamentales entre las que se resaltan el soporte para la producción de alimentos y su importancia en la mitigación de los efectos del cambio climático debido a la dinámica del carbono. Sin embargo, actividades antrópicas como la densificación urbana, la industrialización y principalmente la agricultura aportan elementos como metales pesados, responsables de la degradación del suelo en algunas regiones del planeta. Naturalmente los suelos en su base geoquímica contienen metales pesados, en la mayoría de las regiones éstas concentraciones no representan riesgo ambiental. En este sentido, el propósito de la presente investigación fue recopilar los estudios de metales pesados desarrollados en sistemas de producción agrícola en Colombia para establecer una línea base, que permita identificar necesidades futuras de investigación en esta temática. Entre los resultados encontrados, se identificó que los metales pesados estudiados en el país son Cd>Pb>Hg>Cr>Ni>Cu=Zn=As>Mn>Fe, destacándose el Cd, Pb, Hg y Cr. Sin embargo en Colombia la producción científica en la que son relacionados los metales pesados en la producción agrícola (suelo, cultivos o insumo) es relativamente baja. Asimismo, estos trabajos se localizan en la región central del país, evidenciando que regiones como la Orinoquia considerada como la frontera y despensa agrícola del país, únicamente se reportan tres estudios que fueron publicados en los últimos años. Finalmente con esto se resalta la importancia de generar investigaciones en valores de referencia para estos elementos en los suelos colombianos, que permitan establecer programas de monitoreo y de evaluación en posibles casos de contaminación.

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Effect of soil properties, heavy metals and emerging contaminants in the soil nematodes diversity

Cited by 84 publications

References 58 publications

Artisanal gold‐mining in a rural environment: Land degradation in Kenya

Artisanal gold‐mining in a rural environment: Land degradation in Kenya

Forest Gap Size Alters the Functional Diversity of Soil Nematode Communities in Alpine Forest Ecosystems

Análisis de estudios en metales pesados en zonas agrícolas de Colombia

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