Extracellular enzyme activity suggests phosphorus limitation of biofilm productivity in acid mine drainage remediated streams

Drerup, Samuel A.; Vis, Morgan L.

doi:10.1007/s10750-016-2877-5

Cited by 6 publications

(2 citation statements)

References 45 publications

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“…Low total P concentrations at the treated and untreated sites were probably from the P absorption onto metal oxyhydroxide precipitates on the substratum [33]. AMD-induced P limitation can inhibit microbial development [41], which may alter the community structure. We deliberately chose a reference site for the study that had a similar total P concentration in order to more clearly isolate the AMD and passive treatment effects related to pH and metals.…”

Section: Water Chemistrymentioning

confidence: 99%

Passive Treatment for Acid Mine Drainage Partially Restores Microbial Community Structure in Different Stream Habitats

Neff

DeNicola

Maltman

2021

Water

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The assessment of the degree to which biological communities in streams impaired by acid mine drainage (AMD) are restored by passive treatment has focused primarily on eukaryotic-cell organisms and microbial processes. The responses of microbial community structure to passive treatment have received much less attention, even though functional processes such as nutrient cycling and organic matter decomposition depend on taxonomic composition. Our objective was to determine the degree to which passive treatment restored microbial communities in three types of habitats: aqueous, leaf, and sediment. To assess their recovery, we compared the community composition in these habitats based on 16S rRNA gene sequencing at three different stream sites: an untreated AMD site (U), a remediated site below AMD passive treatment (T), and an unimpaired reference site (R). The acidity, conductivity, and soluble metal concentrations at T were found to be elevated compared to R, but generally 1–2 orders of magnitude less than at U. Microbial community composition was found to be synergistically affected by habitat type and AMD impact, with the similarity among communities in the three habitats increasing with the severity of the AMD. Sediment- and leaf-associated microbial communities at U were characterized by taxa that are tolerant to severe AMD. The absence of the nitrogen oxidizing bacterium Nitrospira in sediment communities at T and U was found to correspond to higher NH4+ concentrations compared to R, possibly because of the presence of iron oxyhydroxide precipitate. In contrast, the microbial composition was found to be similar between the T and R sites for both aqueous and leaf communities, indicating that passive treatment was more able to restore these communities to the reference condition than sediment communities. The remediation of AMD streams should consider the habitat-specific responses of microbial community composition and be guided by future studies that empirically couple changes in taxonomic composition to measured functional processes.

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Section: Water Chemistrymentioning

confidence: 99%

Passive Treatment for Acid Mine Drainage Partially Restores Microbial Community Structure in Different Stream Habitats

Neff

DeNicola

Maltman

2021

Water

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“…were examined from three stream categories in southeastern Ohio: AMD-unimpaired, AMD-impaired, and AMDremediated (Drerup and Vis, 2017). Phosphorus limitation occured in AMD-impaired and AMD-remediated streams, potentially limiting or delaying biotic recovery.…”

Section: Biofilm Community Characteristics and Functionmentioning

confidence: 99%

Characterization and Treatment of Mine Drainage

Wei¹,

Zhang²,

Han³

et al. 2018

Water Environment Research

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The recent research and development on mine drainage published in 2017 was summarized in this review. In particular, this review was focused on three main aspects: 1) mine drainage and its environmental impact, 2) prediction and prevention, and 3) treatment technologies. The first section covers physiochemical characterization, microbiological characterization, and environmental impacts. The second section includes mine drainage prediction and prevention. The final section focuses physiochemical treatment, biological treatment, passive treatment, and beneficial uses of mine drainage and treatment wastes.

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Microbial Ecology of Streams

Leff

2019

Encyclopedia of Water

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Streams present microorganisms with a unique set of physical and chemical conditions. The most apparent is the unidirectional flow of water. Streams also have strong interconnections to the surrounding landscape and are often exposed to extensive anthropogenic disturbance. This article is divided into three main sections: diversity and composition of microbial communities, biogeochemical functions, and anthropogenic impacts. In terms of diversity, high‐throughput sequencing has transformed microbial ecology; yet, streams and some taxa are relatively understudied. The dynamic nature of streams and large temporal and spatial differences also create challenges for development of generalities. The roles of microbes in organic matter processing and nutrient cycling in streams are clear, and the fate of nutrients has a large impact on downstream processes, such as eutrophication. Humans impact streams in a variety of ways that, in turn, alter the physiochemical conditions and microbial ecology. Often these impacts are combined, such as multiple pollutants in a channelized stream, making it difficult to discern the cause and effect. Overall, microbes are central to function of stream ecosystems biogeochemically. This coupled with the importance of streams to humanity makes the study of stream microbial ecology crucial. Molecular methods are at the heart of microbial ecology, and studies of streams also benefit from this approach.

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Extracellular enzyme activity suggests phosphorus limitation of biofilm productivity in acid mine drainage remediated streams

Cited by 6 publications

References 45 publications

Passive Treatment for Acid Mine Drainage Partially Restores Microbial Community Structure in Different Stream Habitats

Passive Treatment for Acid Mine Drainage Partially Restores Microbial Community Structure in Different Stream Habitats

Characterization and Treatment of Mine Drainage

Microbial Ecology of Streams

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