Long-term aquatic biomonitoring in a Southern Brazil urban center: the Guaíba Lake fish community structure through the years

Long-term aquatic biomonitoring in a Southern Brazil urban center: the Guaíba Lake fish community structure through the years

The ichthyofauna of a large lake located in one of the biggest urban centers in Southern South America was studied for 15 years. Variations in ichthyofauna composition by sampling site and period, as well as the influence of abiotic parameter variations on the fish community, were tested through mul...

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Bibliographic Details
Published in:Environmental biology of fishes Vol. 105; no. 5; pp. 605 - 622
Main Authors: Giora, Julia, Carolina Tolentino da Silva, Amanda, Wociechoski Cavalheiro, Laísa, Mariani Wingert, Juliana, Bernhardt Fialho, Clarice
Format: Journal Article
Language:English
Published: Dordrecht Springer Netherlands 01-05-2022
Springer Nature B.V
Subjects:
Abiotic factors
Abundance
Animal Systematics/Taxonomy/Biogeography
Anomalies
Aquatic environment
Biomedical and Life Sciences
Biomonitoring
Community structure
Environment
Environmental quality
Fish
Freshwater & Marine Ecology
Ichthyofauna
Indigenous species
Introduced species
Lakes
Life Sciences
Morphology
Multivariate statistical analysis
Native organisms
Nature Conservation
Parameters
Sampling
Species richness
Statistical analysis
Statistical methods
Statistics
Urban areas
Urban environments
Zoology
Brazil
Environmental quality
Fish diversity
Non-native species
Morphological anomalies
Ichthyofauna
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Summary:The ichthyofauna of a large lake located in one of the biggest urban centers in Southern South America was studied for 15 years. Variations in ichthyofauna composition by sampling site and period, as well as the influence of abiotic parameter variations on the fish community, were tested through multivariate statistical analysis. Likewise, alterations in abundance of morphological anomalies by species, sampling site, and sampling period were verified. Fish community structure alterations demonstrated dissimilar levels of environmental quality in different areas, with sampling sites 1 and 4 considered the poorest and sampling sites 2 and 5 the highest environmental quality areas of the lake. Concerning temporal alterations of the fish fauna, species richness varied significantly, and non-native species emerged in the lake along the studied years. Statistical analysis pointed to a significant abundance of morphological anomalies occurring during four periods, as well as in all sampling sites; however, the highest abundance of anomalous specimens and anomaly types had been recorded for sampling site 1, reinforcing its low environmental quality. The use of different parameters of fish community structure and the observation of morphological alterations’ occurrence in integrative analyses can be an accurate tool to diagnose spatial and temporal discrepancies in aquatic environment quality.
ISSN:0378-1909
1573-5133
DOI:10.1007/s10641-022-01272-2