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Impacts of groundwater extraction on calcareous fen floristic quality.
Bart, David; Booth, Eric; Loheide, Steven P; Bernthal, Thomas.
Afiliação
  • Bart D; Dep. of Planning and Landscape Architecture and Gaylord Nelson Institute for Environmental Studies, Univ. of Wisconsin-Madison, 42B Agricultural Hall, 1450 Linden Dr., Madison, WI, 53711, USA.
  • Booth E; Dep. of Agronomy, Univ. of Wisconsin, Madison, WI, 53711, USA.
  • Loheide SP; Dep. of Civil and Environmental Engineering, Univ. of Wisconsin, Madison, WI, 53711, USA.
  • Bernthal T; Wisconsin Dep. of Natural Resources (retired), Madison, WI, 53706, USA.
J Environ Qual ; 49(3): 723-734, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-33016394
ABSTRACT
Groundwater withdrawal has increased over the past several decades throughout the U.S. Upper Midwest, yet impacts of pumping on groundwater-dependent wetlands remain understudied. Here, we compared measures of floristic quality, hydrologic conditions, and nutrient availability in pairs of more-impacted fens and less-impacted fens throughout Wisconsin. Floristic quality was significantly lower in more-impacted fens than in less-impacted fens, the result of the disappearance of rare and specialist species and the increase in richness and cover of non-native and weedy species. Plots within more-impacted fens generally had lower root-zone volumetric water content, greater depth to water table, and higher available nitrogen and phosphorus than within less-impacted fens, although nonuniformly among or within sites. Lower volumetric water content predicted plot-level declines in floristic quality, richness of rare or specialist species, an increase in the number of non-native or problematic species, and an increase in cover of non-native and problematic species. Our results strongly suggest that groundwater withdrawals have substantial negative impacts on nearby fen quality and furthering imperilment of several species they contain.
Assuntos
Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Assunto principal: Água Subterrânea País/Região como assunto: América do Norte Idioma: Inglês Revista: J Environ Qual Ano de publicação: 2020 Tipo de documento: Artigo País de afiliação: Estados Unidos

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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Assunto principal: Água Subterrânea País/Região como assunto: América do Norte Idioma: Inglês Revista: J Environ Qual Ano de publicação: 2020 Tipo de documento: Artigo País de afiliação: Estados Unidos