Synergistic effects in mine offsite landscapes: Predicted ecosystem shifts could exacerbate mining effects on bryophyte community structure

Yin, Xiangbo; Martineau, Christine; Fenton, Nicole J.

doi:10.1016/j.ecolind.2022.109555

Cited by 3 publications

(5 citation statements)

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“…Surprisingly, the effects of mining stage on the alpha, beta diversity and relative abundance of most phyla were not ecosystem type-dependent. It suggests that ecosystem types did not influence the ability of the moss phyllosphere to resist to the offsite effects, which is in contrast with a previous study indicating that bryophyte diversity was more affected by mining stage in deciduous forest than in coniferous forest ( Yin et al, 2022 ). Compared with deciduous forest, coniferous trees with high canopy cover, leaf area index and persistent foliage intercept more pollutants in atmospheric deposition ( Barbier et al, 2008 ; Nguyen et al, 2015 ).…”

Section: Discussioncontrasting

confidence: 97%

“…Our results confirmed the presence of offsite effects of mines on the feather moss phyllosphere microbiota (Q1) based on the differences in alpha and beta diversity, relative abundance of individual taxa, and indicator species of mined sites (operating or non-operating) and controls. These findings extend the offsite effects of mines on surrounding ecosystems to microbiomes, as only vegetation and animals were used to determine the effects in previous studies (Dyer et al, 2001;Boisvert et al, 2021;Watkinson et al, 2021;Wu et al, 2021;Yin et al, 2022). Surprisingly, similar levels of bacterial alpha diversity were detected in operating mines and controls, while the diversity in non-operating sites was lower (Figure 2), which is contrary to our expectations.…”

Section: Discussioncontrasting

confidence: 75%

“…The ecosystem of each plot was categorized into one of four types based on tree species [diameter at breast height (DBH) ≥10 cm] composition: coniferous forest (>70% of coniferous tree stems), deciduous forest (>70% deciduous tree stems), mixed (coniferous tree stems between 69 and 31%) and open canopy forests (DBH of all trees below 10 cm, peatlands in our studied areas). More detailed information about the design is shown in our previous studies ( Boisvert et al, 2021 ; Yin et al, 2022 ).…”

Section: Methodsmentioning

confidence: 99%

“…In total, 211 samples were collected from the 220 plots (no P. schreberi was found in 9 plots). In addition, forest environmental variables were also measured in the field as previously described ( Yin et al, 2022 ). Principal component analysis (PCA) analysis showed that the environmental variables differed significantly among ecosystem types (ANOVA, p < 0.001, Supplementary Figure 2 ), therefore, environmental variables were grouped into the four ecosystem types in further analyses.…”

Section: Methodsmentioning

confidence: 99%

“…Operating sites with multiple activities (e.g., drilling, blasting, digging, crushing and transportations) generally produce more dust pollutants than non-operating sites (the mines at the stage of establishment, closure and rehabilitation, Punia, 2021 ). Previous studies have shown that the offsite effects of mines on understory plant and bryophyte richness are more pronounced near operating mines than non-operating sites ( Boisvert et al, 2021 ; Yin et al, 2022 ). We expect to find the same pattern in the feather moss phyllosphere microbiota.…”

Section: Introductionmentioning

confidence: 96%

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Out of site, out of mind: Changes in feather moss phyllosphere microbiota in mine offsite boreal landscapes

et al. 2023

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Plant-microbe interactions play a crucial role in maintaining biodiversity and ecological services in boreal forest biomes. Mining for minerals, and especially the emission of heavy metal-enriched dust from mine sites, is a potential threat to biodiversity in offsite landscapes. Understanding the impacts of mining on surrounding phyllosphere microbiota is especially lacking. To investigate this, we characterized bacterial and fungal communities in the phyllosphere of feather moss Pleurozium schreberi (Brid). Mitt in boreal landscapes near six gold mine sites at different stages of the mine lifecycle. We found that (1) both mining stage and ecosystem type are drivers of the phyllosphere microbial community structure in mine offsite landscapes; (2) Bacterial alpha diversity is more sensitive than fungal alpha diversity to mining stage, while beta diversity of both groups is impacted; (3) mixed and deciduous forests have a higher alpha diversity and a distinct microbial community structure when compared to coniferous and open canopy ecosystems; (4) the strongest effects are detectable within 0.2 km from operating mines. These results confirmed the presence of offsite effects of mine sites on the phyllosphere microbiota in boreal forests, as well as identified mining stage and ecosystem type as drivers of these effects. Furthermore, the footprint was quantified at 0.2 km, providing a reference distance within which mining companies and policy makers should pay more attention during ecological assessment and for the development of mitigation strategies. Further studies are needed to assess how these offsite effects of mines affect the functioning of boreal ecosystems.

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Section: Discussioncontrasting

confidence: 97%

Section: Discussioncontrasting

confidence: 75%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

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Out of site, out of mind: Changes in feather moss phyllosphere microbiota in mine offsite boreal landscapes

et al. 2023

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Capture and characterization of fugitive mine dust around an open pit gold mine in Québec, Canada

Berryman,

Cleaver,

Martineau

et al. 2024

Applied Geochemistry

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Effects of industrial disturbances on the flavonoid concentration ofRhododendron groenlandicum

Thomas

Lamara

Asselin

et al. 2023

Botany

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The boreal forest is subject to various anthropogenic disturbances, including logging, mining, and hydroelectricity production and transport. These disturbances affect Indigenous communities and the culturally salient species they depend on for the practice of traditional and subsistence activities. Rhododendron groenlandicum is one such species whose leaves are used to treat various ailments, due to their concentration in biologically active chemicals such as flavonoids. Our objective was to assess the effect of anthropogenic disturbances on the chemical properties of R. groenlandicum on the territories of three Indigenous communities. Leaf samples were collected near mines, under hydroelectric power lines, and in non-disturbed sites. Our results showed that variations in flavonoid concentration were mainly related to territory (R² = 0.43, P = 0.0005), while disturbance type had a smaller effect (R² = 0.18, P = 0.02). Samples from Nemaska, the northernmost territory with the most open forest stands, had higher concentrations of epicatechin (+23%, P = 0.03). Quercetin-3-glucoside concentrations were lower near mines (-19%, P = 0.01). The effects of disturbances on the chemical signature of R. groenlandicum are complex, and a complete assessment of the consequence of industrial activity on Indigenous landscape value must take into account other culturally salient species.

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Synergistic effects in mine offsite landscapes: Predicted ecosystem shifts could exacerbate mining effects on bryophyte community structure

Cited by 3 publications

References 87 publications

Out of site, out of mind: Changes in feather moss phyllosphere microbiota in mine offsite boreal landscapes

Out of site, out of mind: Changes in feather moss phyllosphere microbiota in mine offsite boreal landscapes

Capture and characterization of fugitive mine dust around an open pit gold mine in Québec, Canada

Effects of industrial disturbances on the flavonoid concentration ofRhododendron groenlandicum

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