Long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage
Abstract Aim We investigated the long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage. Methods We compared environmental data and data from fish assemblage structure and trophic organization sampled in a stream located in a rural area, within a time gap of 20 years. Results We observed only punctual changes in the environmental variables and fish structure, which may not be related to the rural landscape. In fish diet, insectivory remained predominant in all sample periods. However, when we analyzed the groups of hexapods consumed by the fish species, we found a substitution of Ephemeroptera and Trichoptera by Diptera over time. Conclusions Although the fish assemblage structure was not affected, the insectivore diet analysis showed that the stream stretch could be in an ongoing process of environmental quality loss, once the simplification in the macroinvertebrates assemblage structure over time is indicative of environmental degradation.
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Digital revista |
| Language: | English |
| Published: |
Associação Brasileira de Limnologia
2019
|
| Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2019000100301 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| id |
oai:scielo:S2179-975X2019000100301 |
|---|---|
| record_format |
ojs |
| spelling |
oai:scielo:S2179-975X20190001003012019-08-21Long-term effects of a rural landscape on the structure and trophic organization of a fish assemblageManoel,Pedro SartoriUieda,Virginia Sanches diet feeding habits rural landscape seasonal variation tropical stream Abstract Aim We investigated the long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage. Methods We compared environmental data and data from fish assemblage structure and trophic organization sampled in a stream located in a rural area, within a time gap of 20 years. Results We observed only punctual changes in the environmental variables and fish structure, which may not be related to the rural landscape. In fish diet, insectivory remained predominant in all sample periods. However, when we analyzed the groups of hexapods consumed by the fish species, we found a substitution of Ephemeroptera and Trichoptera by Diptera over time. Conclusions Although the fish assemblage structure was not affected, the insectivore diet analysis showed that the stream stretch could be in an ongoing process of environmental quality loss, once the simplification in the macroinvertebrates assemblage structure over time is indicative of environmental degradation.info:eu-repo/semantics/openAccessAssociação Brasileira de LimnologiaActa Limnologica Brasiliensia v.31 20192019-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2019000100301en10.1590/s2179-975x3217 |
| institution |
SCIELO |
| collection |
OJS |
| country |
Brasil |
| countrycode |
BR |
| component |
Revista |
| access |
En linea |
| databasecode |
rev-scielo-br |
| tag |
revista |
| region |
America del Sur |
| libraryname |
SciELO |
| language |
English |
| format |
Digital |
| author |
Manoel,Pedro Sartori Uieda,Virginia Sanches |
| spellingShingle |
Manoel,Pedro Sartori Uieda,Virginia Sanches Long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage |
| author_facet |
Manoel,Pedro Sartori Uieda,Virginia Sanches |
| author_sort |
Manoel,Pedro Sartori |
| title |
Long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage |
| title_short |
Long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage |
| title_full |
Long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage |
| title_fullStr |
Long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage |
| title_full_unstemmed |
Long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage |
| title_sort |
long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage |
| description |
Abstract Aim We investigated the long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage. Methods We compared environmental data and data from fish assemblage structure and trophic organization sampled in a stream located in a rural area, within a time gap of 20 years. Results We observed only punctual changes in the environmental variables and fish structure, which may not be related to the rural landscape. In fish diet, insectivory remained predominant in all sample periods. However, when we analyzed the groups of hexapods consumed by the fish species, we found a substitution of Ephemeroptera and Trichoptera by Diptera over time. Conclusions Although the fish assemblage structure was not affected, the insectivore diet analysis showed that the stream stretch could be in an ongoing process of environmental quality loss, once the simplification in the macroinvertebrates assemblage structure over time is indicative of environmental degradation. |
| publisher |
Associação Brasileira de Limnologia |
| publishDate |
2019 |
| url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2019000100301 |
| work_keys_str_mv |
AT manoelpedrosartori longtermeffectsofarurallandscapeonthestructureandtrophicorganizationofafishassemblage AT uiedavirginiasanches longtermeffectsofarurallandscapeonthestructureandtrophicorganizationofafishassemblage |
| _version_ |
1756439674739490816 |