A stream multimetric fish index in a large-sized city in south-eastern Brazil
Abstract: Aim Our study was carried out to develop a multimetric index suitable for urban wadeable streams in Sorocaba, a large-sized city from the Atlantic rainforest in south-eastern Brazil. Methods Twenty-seven stream stretches were selected for environmental and fish evaluation. Twenty ecologi...
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Limnologia
2021-06-01
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| Series: | Acta Limnologica Brasiliensia |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2021000100710&tlng=en |
| _version_ | 1818744838042943488 |
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| author | Guilherme Raphael Camargo Arcanjo Silva Maurício Cetra |
| author_facet | Guilherme Raphael Camargo Arcanjo Silva Maurício Cetra |
| author_sort | Guilherme Raphael Camargo Arcanjo Silva |
| collection | DOAJ |
| description | Abstract: Aim Our study was carried out to develop a multimetric index suitable for urban wadeable streams in Sorocaba, a large-sized city from the Atlantic rainforest in south-eastern Brazil. Methods Twenty-seven stream stretches were selected for environmental and fish evaluation. Twenty ecological metrics were tested over an environmental gradient between the reference and degraded stretches. Candidate metrics were screened for range, responsiveness, and redundancy. We calculated a multimetric fish index (MFI) subdivided into five quality classes: reference ≥ 0.8, 0.6 ≤ good < 0.8, 0.4 ≤ moderate < 0.6, 0.2 ≤ poor < 0.4, and bad < 0.2. Results Four metrics were adequate for discriminating higher biotic quality from degraded stretches. Five stream stretches (18%) were classified as a reference or good, and 16 (60%) were poor or bad. Three reference stretches could be used for a hydromorphological restoration programme. Conclusion Our results indicated that biological integrity was altered, which was indicative of severe environmental degradation. Our study results may be useful for a management and restoration project of the Sorocaba/Médio Tietê hydrographic basin. |
| first_indexed | 2024-12-18T02:50:40Z |
| format | Article |
| id | doaj.art-220da4571b414945b94c5a66b79a17ae |
| institution | Directory Open Access Journal |
| issn | 2179-975X |
| language | English |
| last_indexed | 2024-12-18T02:50:40Z |
| publishDate | 2021-06-01 |
| publisher | Associação Brasileira de Limnologia |
| record_format | Article |
| series | Acta Limnologica Brasiliensia |
| spelling | doaj.art-220da4571b414945b94c5a66b79a17ae2022-12-21T21:23:28ZengAssociação Brasileira de LimnologiaActa Limnologica Brasiliensia2179-975X2021-06-013310.1590/s2179-975x5020A stream multimetric fish index in a large-sized city in south-eastern BrazilGuilherme Raphael Camargo Arcanjo Silvahttps://orcid.org/0000-0003-0540-1228Maurício Cetrahttps://orcid.org/0000-0002-3902-0661Abstract: Aim Our study was carried out to develop a multimetric index suitable for urban wadeable streams in Sorocaba, a large-sized city from the Atlantic rainforest in south-eastern Brazil. Methods Twenty-seven stream stretches were selected for environmental and fish evaluation. Twenty ecological metrics were tested over an environmental gradient between the reference and degraded stretches. Candidate metrics were screened for range, responsiveness, and redundancy. We calculated a multimetric fish index (MFI) subdivided into five quality classes: reference ≥ 0.8, 0.6 ≤ good < 0.8, 0.4 ≤ moderate < 0.6, 0.2 ≤ poor < 0.4, and bad < 0.2. Results Four metrics were adequate for discriminating higher biotic quality from degraded stretches. Five stream stretches (18%) were classified as a reference or good, and 16 (60%) were poor or bad. Three reference stretches could be used for a hydromorphological restoration programme. Conclusion Our results indicated that biological integrity was altered, which was indicative of severe environmental degradation. Our study results may be useful for a management and restoration project of the Sorocaba/Médio Tietê hydrographic basin.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2021000100710&tlng=enurban streamshabitat qualityIndex of Biotic Integrity |
| spellingShingle | Guilherme Raphael Camargo Arcanjo Silva Maurício Cetra A stream multimetric fish index in a large-sized city in south-eastern Brazil Acta Limnologica Brasiliensia urban streams habitat quality Index of Biotic Integrity |
| title | A stream multimetric fish index in a large-sized city in south-eastern Brazil |
| title_full | A stream multimetric fish index in a large-sized city in south-eastern Brazil |
| title_fullStr | A stream multimetric fish index in a large-sized city in south-eastern Brazil |
| title_full_unstemmed | A stream multimetric fish index in a large-sized city in south-eastern Brazil |
| title_short | A stream multimetric fish index in a large-sized city in south-eastern Brazil |
| title_sort | stream multimetric fish index in a large sized city in south eastern brazil |
| topic | urban streams habitat quality Index of Biotic Integrity |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2021000100710&tlng=en |
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