| Author | Pereira, Priscilla S. | |
| Author | Souza, Natália F. | |
| Author | Baptista, Darcilio F. | |
| Author | Oliveira, Jaime L. M. | |
| Author | Buss, Daniel F. | |
| Access date | 2016-07-05T14:11:20Z | pt_BR |
| Access date | 2016-07-08T12:21:58Z | |
| Available date | 2016-07-05T14:11:20Z | pt_BR |
| Available date | 2016-07-08T12:21:58Z | |
| Document date | 2016 | |
| Citation | PEREIRA, Priscilla S. et al. Incorporating natural variability in the bioassessment of stream condition in the Atlantic Forest biome, Brazil. Ecological Indicators, v.69, p.606-616, Oct. 2016. | pt_BR |
| ISSN | 470-160X | pt_BR |
| URI | https://www.arca.fiocruz.br/handle/icict/14774 | |
| Language | eng | pt_BR |
| Publisher | Elsevier | pt_BR |
| Rights | restricted access | |
| Subject in Portuguese | Monitoramento Ambiental | pt_BR |
| Subject in Portuguese | Índice multimétrico | pt_BR |
| Subject in Portuguese | Protocolo de Bioavaliação | pt_BR |
| Subject in Portuguese | Insetos aquáticos | pt_BR |
| Subject in Portuguese | Riachos neotropicais | pt_BR |
| Subject in Portuguese | Brasil | pt_BR |
| Title | Incorporating natural variability in the bioassessment of stream condition in the Atlantic Forest biome, Brazil | pt_BR |
| Type | Article | |
| DOI | 10.1016/j.ecolind.2016.05.031 | pt_BR |
| Abstract | Most bioassessment programs in Brazil face difficulties when scaling up from small spatial scales because
larger scales usually encompass great environmental variability. Covariance of anthropogenic pressures
with natural environmental gradients can be a confounding factor in the evaluation of biologic responses
to anthropogenic pressures. The objective of this study was to develop a multimetric index (MMI) with
macroinvertebrates for two stream types and two ecoregions in the Atlantic Forest biome in Rio de Janeiro
state, Brazil. We hypothesized that by using two approaches – (1) testing and adjusting metrics to landscape
parameters, and (2) selecting metrics using a cluster analysis to avoid metrics redundancy – the
final MMI would perform better than the traditional approach (unadjusted metrics, one metric representing
each category). Four MMIs were thus developed: MMI-1 – adjusted MMI with metrics selected
after cluster analysis); MMI-2 – adjusted MMI with one metric from each category; MMI-3 – unadjusted
MMI with metrics selected after cluster analysis; MMI-4 – unadjusted MMI with one metric from each
category. We used three decision criteria to assess MMI’s performance: precision, responsiveness and
sensitivity. In addition, we tested the MMI’s by using an independent set of sites to validate the results.
Although all MMIs performed well in the three criteria, adjusting metrics to natural variation increased
MMI response and sensitivity to impairment. In addition, the selected MMI-2 was able to classify sites
of two stream types and two ecoregions. The use of cluster analysis, however, did not avoid high redundancy
between metrics of different branches. The MMI-4 had the poorest performance among all tested
MMIs and it was not able to distinguish adequately reference and impaired sites from both ecoregions.
We present some considerations on the use of metrics and on the development of MMI’s in Brazil and
elsewhere. | pt_BR |
| Affilliation | Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Avaliação e Promoção da Saúde Ambiental (LAPSA/IOC/FIOCRUZ). Rio de Janeiro, RJ, Brasil. | pt_BR |
| Affilliation | Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Avaliação e Promoção da Saúde Ambiental (LAPSA/IOC/FIOCRUZ). Rio de Janeiro, RJ, Brasil. | pt_BR |
| Affilliation | Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Avaliação e Promoção da Saúde Ambiental (LAPSA/IOC/FIOCRUZ). Rio de Janeiro, RJ, Brasil. | pt_BR |
| Affilliation | Fundação Oswaldo Cruz, Escola Nacional de Saúde Pública Sérgio Arouca (DSSA/ENSP/FIOCRUZ). Rio de Janeiro, RJ, Brasil. | pt_BR |
| Affilliation | Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Avaliação e Promoção da Saúde Ambiental (LAPSA/IOC/FIOCRUZ). Rio de Janeiro, RJ, Brasil. | pt_BR |
| Subject | Multimetric index | pt_BR |
| Subject | Biological monitoring | pt_BR |
| Subject | Bioassessment protocol | pt_BR |
| Subject | Aquatic insects | pt_BR |
| Subject | Neotropical streams | pt_BR |
| Subject | Brazil | pt_BR |
| e-ISSN | 1872-7034 | pt_BR |
