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Ecosystem modification and network position impact insect-mediated contaminant fluxes from a mountaintop mining-impacted river network.
Naslund, Laura C; Gerson, Jacqueline R; Brooks, Alexander C; Rosemond, Amy D; Walters, David M; Bernhardt, Emily S.
Afiliación
  • Naslund LC; Odum School of Ecology, University of Georgia, 140 E. Green St., Athens, GA, 30602, USA. Electronic address: laura.naslund@uga.edu.
  • Gerson JR; Biology Department, Duke University, 130 Science Dr., Durham, NC, 27708, USA.
  • Brooks AC; Department of Ecosystem Science and Sustainability, Colorado State University, 1476 Campus Deliver, Fort Collins, CO, 80523, USA.
  • Rosemond AD; Odum School of Ecology, University of Georgia, 140 E. Green St., Athens, GA, 30602, USA.
  • Walters DM; U.S. Geological Survey, Columbia Environmental Research Center, 4200 East New Haven Road, Columbia, MO, 65201, USA.
  • Bernhardt ES; Biology Department, Duke University, 130 Science Dr., Durham, NC, 27708, USA.
Environ Pollut ; 291: 118257, 2021 Dec 15.
Article en En | MEDLINE | ID: mdl-34600064
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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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Minas de Carbón / Ríos Límite: Animals Idioma: En Revista: Environ Pollut Asunto de la revista: SAUDE AMBIENTAL Año: 2021 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Minas de Carbón / Ríos Límite: Animals Idioma: En Revista: Environ Pollut Asunto de la revista: SAUDE AMBIENTAL Año: 2021 Tipo del documento: Article Pais de publicación: Reino Unido