Influence of urbanization on stream fish assemblages in three microbasins in the Upper Paraná River Basin
Abstract The colonization pattern of fish assemblages in streams is often studied in the context of environmental filters. On the other hand, when fish assemblages are subjected to anthropogenic effects, variables associated with environmental quality assume more importance. Therefore, this work eva...
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| Format: | Article |
| Language: | English |
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Instituto Internacional de Ecologia
2021-06-01
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| Series: | Brazilian Journal of Biology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842023000100125&tlng=en |
| _version_ | 1818950786729639936 |
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| author | F. S. Ferreira J. C. J. Solórzano Y. R. Súarez |
| author_facet | F. S. Ferreira J. C. J. Solórzano Y. R. Súarez |
| author_sort | F. S. Ferreira |
| collection | DOAJ |
| description | Abstract The colonization pattern of fish assemblages in streams is often studied in the context of environmental filters. On the other hand, when fish assemblages are subjected to anthropogenic effects, variables associated with environmental quality assume more importance. Therefore, this work evaluated the richness and composition of fish from streams sampled at different urbanization levels, aiming to determine any direct effects on the structure of fish assemblages. To accomplish this, samples were collected from 2003 to 2011 at 31 sites distributed among 3 microbasins in the Rio Ivinhema Basin, Alto Rio Paraná. Based on environmental variables, physicochemical of the water and analysis of the use and occupation of the soil, the microbasins were classified into different urbanization levels (low, medium and high). A total of 4,320 individuals were sampled, out of which 57 fish species were recorded. Sampled sites with medium urbanization level presented higher richness compared to sampled sites with high urbanization level which presented lower richness. Species richness in these sites was explained mainly by water temperature and water velocity. Results confirmed that urbanization does directly affect environmental integrity, which, in turn, can lead to the homogenization of stream assemblages. |
| first_indexed | 2024-12-20T09:24:08Z |
| format | Article |
| id | doaj.art-3d15192ab1574c8cb83d2442c1899fbb |
| institution | Directory Open Access Journal |
| issn | 1678-4375 |
| language | English |
| last_indexed | 2024-12-20T09:24:08Z |
| publishDate | 2021-06-01 |
| publisher | Instituto Internacional de Ecologia |
| record_format | Article |
| series | Brazilian Journal of Biology |
| spelling | doaj.art-3d15192ab1574c8cb83d2442c1899fbb2022-12-21T19:45:13ZengInstituto Internacional de EcologiaBrazilian Journal of Biology1678-43752021-06-018310.1590/1519-6984.247384Influence of urbanization on stream fish assemblages in three microbasins in the Upper Paraná River BasinF. S. Ferreirahttps://orcid.org/0000-0001-9085-9799J. C. J. Solórzanohttps://orcid.org/0000-0002-9217-7836Y. R. Súarezhttps://orcid.org/0000-0003-1226-4321Abstract The colonization pattern of fish assemblages in streams is often studied in the context of environmental filters. On the other hand, when fish assemblages are subjected to anthropogenic effects, variables associated with environmental quality assume more importance. Therefore, this work evaluated the richness and composition of fish from streams sampled at different urbanization levels, aiming to determine any direct effects on the structure of fish assemblages. To accomplish this, samples were collected from 2003 to 2011 at 31 sites distributed among 3 microbasins in the Rio Ivinhema Basin, Alto Rio Paraná. Based on environmental variables, physicochemical of the water and analysis of the use and occupation of the soil, the microbasins were classified into different urbanization levels (low, medium and high). A total of 4,320 individuals were sampled, out of which 57 fish species were recorded. Sampled sites with medium urbanization level presented higher richness compared to sampled sites with high urbanization level which presented lower richness. Species richness in these sites was explained mainly by water temperature and water velocity. Results confirmed that urbanization does directly affect environmental integrity, which, in turn, can lead to the homogenization of stream assemblages.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842023000100125&tlng=enenvironmental gradientspecies richnessfish assemblagesanthropogenic influence |
| spellingShingle | F. S. Ferreira J. C. J. Solórzano Y. R. Súarez Influence of urbanization on stream fish assemblages in three microbasins in the Upper Paraná River Basin Brazilian Journal of Biology environmental gradient species richness fish assemblages anthropogenic influence |
| title | Influence of urbanization on stream fish assemblages in three microbasins in the Upper Paraná River Basin |
| title_full | Influence of urbanization on stream fish assemblages in three microbasins in the Upper Paraná River Basin |
| title_fullStr | Influence of urbanization on stream fish assemblages in three microbasins in the Upper Paraná River Basin |
| title_full_unstemmed | Influence of urbanization on stream fish assemblages in three microbasins in the Upper Paraná River Basin |
| title_short | Influence of urbanization on stream fish assemblages in three microbasins in the Upper Paraná River Basin |
| title_sort | influence of urbanization on stream fish assemblages in three microbasins in the upper parana river basin |
| topic | environmental gradient species richness fish assemblages anthropogenic influence |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842023000100125&tlng=en |
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