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Development of a benthic macroinvertebrate multimetric index (MMI) for Neotropical Savanna headwater streams Public Deposited

https://ir.library.oregonstate.edu/concern/articles/47429b92n

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  • Assessing the ecological impacts of anthropogenic pressures is a key task in environmental management. Multimetric indices (MMIs), based on aquatic assemblage responses to anthropogenic pressures, have been used increasingly throughout the world. The MMI approach is a low-cost, rapid field method that produces an aquatic condition index that responds precisely to anthropogenic pressures, making it useful for conservation and environmental management. We developed four candidate MMIs based on benthic macroinvertebrate assemblages sampled at 40 randomly selected sites to assess the environmental condition of streams upstream of a hydroelectric power plant in the Brazilian Neotropical Savanna biome. Those MMIs were built from landscape-adjusted and unadjusted biological metrics as well as two alternative ways of choosing metrics. The alternative MMIs performances were tested by comparing their precision to distinguish least-disturbed areas, responsiveness to discriminate least-and most-disturbed areas, and sensitivity to anthropogenic pressures at catchment and local scales. The best performing MMI had landscape-adjusted metrics and was produced through use of principal component analysis for metric selection. It included 4 metrics: Ephemeroptera richness, average tolerance score per taxon, percentage of predator individuals, and percentage of Odonata individuals adjusted by elevation. This index discriminated well the anthropogenic pressures at local-and catchment-scales, and at both scales simultaneously, as indicated by an integrated disturbance index. Our methodological development included statistical criteria for identifying least-and most-disturbed sites, calibrating for natural landscape variability, and use of non-redundant metrics. Therefore, we expect it will provide a model for environmental assessment of water resources elsewhere in Brazil and in other nations.
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  • Macedo, D. R., Hughes, R. M., Ferreira, W. R., Firmiano, K. R., Silva, D. R., Ligeiro, R., ... & Callisto, M. (2016). Development of a benthic macroinvertebrate multimetric index (MMI) for Neotropical Savanna headwater streams. Ecological Indicators, 64, 132-141. doi:10.1016/j.ecolind.2015.12.019
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  • 64
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  • We received funding from Companhia Energetica de Minas Gerais (CEMIG-Programa Peixe Vivo), Pesquisa e Desenvolvimento da Agencia Nacional de Energia Eletrica (P&D ANEEL-CEMIG GT-487), Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior, Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), Fundacao de Amparo a Pesquisa do Estado de Minas Gerais (FAPEMIG), and Fulbright Brasil. Colleagues from the Centro Federal de Educacao Tecnologica de Minas Gerais, Pontificia Unversidade Catolica de Minas Gerais, Universidade Federal de Lavras, and Universidade Federal de Minas Gerais assisted with field collections and laboratory work. Juliana Franca and Ana Paula Eller were responsible for water quality analyses. Carlos B.M. Alves helped with general logistics and fieldwork. MC was awarded research productivity grants CNPq (No. 302960/2011-2) and Minas Gerais researcher grant FAPEMIG PPM-77/13 and PPM IX-02/2015.
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  • description.provenance : Made available in DSpace on 2016-04-05T15:33:51Z (GMT). No. of bitstreams: 4 MacedoDevelopmentBenthicMacroinvertebrate.pdf: 1405826 bytes, checksum: e66d7c9a8ab63f4107f04be51d19a91f (MD5) MacedoDevelopmentBenthicMacroinvertebrateAppendixA.pdf: 37741 bytes, checksum: 35c685a11b2e3b2271b45739307ff104 (MD5) MacedoDevelopmentBenthicMacroinvertebrateAppendixB.pdf: 37747 bytes, checksum: 9bc58a11e1d6ed83c9ee9fdd7ae9cea7 (MD5) MacedoDevelopmentBenthicMacroinvertebrateAppendixC.pdf: 56770 bytes, checksum: 1caf7433fa0b4f36acf304b843bf29e6 (MD5) Previous issue date: 2016-05
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2016-04-05T15:33:51Z (GMT) No. of bitstreams: 4 MacedoDevelopmentBenthicMacroinvertebrate.pdf: 1405826 bytes, checksum: e66d7c9a8ab63f4107f04be51d19a91f (MD5) MacedoDevelopmentBenthicMacroinvertebrateAppendixA.pdf: 37741 bytes, checksum: 35c685a11b2e3b2271b45739307ff104 (MD5) MacedoDevelopmentBenthicMacroinvertebrateAppendixB.pdf: 37747 bytes, checksum: 9bc58a11e1d6ed83c9ee9fdd7ae9cea7 (MD5) MacedoDevelopmentBenthicMacroinvertebrateAppendixC.pdf: 56770 bytes, checksum: 1caf7433fa0b4f36acf304b843bf29e6 (MD5)
  • description.provenance : Submitted by Patricia Black (patricia.black@oregonstate.edu) on 2016-04-05T15:33:22Z No. of bitstreams: 4 MacedoDevelopmentBenthicMacroinvertebrate.pdf: 1405826 bytes, checksum: e66d7c9a8ab63f4107f04be51d19a91f (MD5) MacedoDevelopmentBenthicMacroinvertebrateAppendixA.pdf: 37741 bytes, checksum: 35c685a11b2e3b2271b45739307ff104 (MD5) MacedoDevelopmentBenthicMacroinvertebrateAppendixB.pdf: 37747 bytes, checksum: 9bc58a11e1d6ed83c9ee9fdd7ae9cea7 (MD5) MacedoDevelopmentBenthicMacroinvertebrateAppendixC.pdf: 56770 bytes, checksum: 1caf7433fa0b4f36acf304b843bf29e6 (MD5)

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