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Ecosystem modification and network position impact insect-mediated contaminant fluxes from a mountaintop mining-impacted river network.

Publication ,  Journal Article
Naslund, LC; Gerson, JR; Brooks, AC; Rosemond, AD; Walters, DM; Bernhardt, ES
Published in: Environmental pollution (Barking, Essex : 1987)
December 2021

Aquatic-terrestrial contaminant transport via emerging aquatic insects has been studied across contaminant classes and aquatic ecosystems, but few studies have quantified the magnitude of these insect-mediated contaminant fluxes, limiting our understanding of their drivers. Using a recent conceptual model, we identified watershed mining extent, settling ponds, and network position as potential drivers of selenium (Se) fluxes from a mountaintop coal mining-impacted river network. Mining extent drove insect Se concentration (p = 0.008, R2 = 0.406), but ponding and network position were the principal drivers of Se flux through their impact on insect production. Se fluxes were 18 times higher from ponded, mined tributaries than from unponded ones and were comparable to fluxes from larger, productive mainstem sites. Thus, contaminant fluxes were highest in the river mainstem or below ponds, indicating that without considering controls on insect production, contaminant fluxes and their associated risks for predators like birds and bats can be misestimated.

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Published In

Environmental pollution (Barking, Essex : 1987)

DOI

EISSN

1873-6424

ISSN

0269-7491

Publication Date

December 2021

Volume

291

Start / End Page

118257

Related Subject Headings

  • Rivers
  • Ponds
  • Insecta
  • Environmental Sciences
  • Ecosystem
  • Coal Mining
  • Animals
 

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Naslund, L. C., Gerson, J. R., Brooks, A. C., Rosemond, A. D., Walters, D. M., & Bernhardt, E. S. (2021). Ecosystem modification and network position impact insect-mediated contaminant fluxes from a mountaintop mining-impacted river network. Environmental Pollution (Barking, Essex : 1987), 291, 118257. https://doi.org/10.1016/j.envpol.2021.118257
Naslund, Laura C., Jacqueline R. Gerson, Alexander C. Brooks, Amy D. Rosemond, David M. Walters, and Emily S. Bernhardt. “Ecosystem modification and network position impact insect-mediated contaminant fluxes from a mountaintop mining-impacted river network.Environmental Pollution (Barking, Essex : 1987) 291 (December 2021): 118257. https://doi.org/10.1016/j.envpol.2021.118257.
Naslund LC, Gerson JR, Brooks AC, Rosemond AD, Walters DM, Bernhardt ES. Ecosystem modification and network position impact insect-mediated contaminant fluxes from a mountaintop mining-impacted river network. Environmental pollution (Barking, Essex : 1987). 2021 Dec;291:118257.
Naslund, Laura C., et al. “Ecosystem modification and network position impact insect-mediated contaminant fluxes from a mountaintop mining-impacted river network.Environmental Pollution (Barking, Essex : 1987), vol. 291, Dec. 2021, p. 118257. Epmc, doi:10.1016/j.envpol.2021.118257.
Naslund LC, Gerson JR, Brooks AC, Rosemond AD, Walters DM, Bernhardt ES. Ecosystem modification and network position impact insect-mediated contaminant fluxes from a mountaintop mining-impacted river network. Environmental pollution (Barking, Essex : 1987). 2021 Dec;291:118257.
Journal cover image

Published In

Environmental pollution (Barking, Essex : 1987)

DOI

EISSN

1873-6424

ISSN

0269-7491

Publication Date

December 2021

Volume

291

Start / End Page

118257

Related Subject Headings

  • Rivers
  • Ponds
  • Insecta
  • Environmental Sciences
  • Ecosystem
  • Coal Mining
  • Animals