Changes in ecosystem functions generated by fish populations after the introduction of a non-native predator (Cichla kelberi) (Perciformes: Cichlidae)
Abstract The introduction of non-native predators is a matter of great concern, but their impacts on ecosystem functions remain poorly understood. We investigated how changes in fish diversity following the invasion of Cichla kelberi affected ecosystem functions generated by fish populations. Fish a...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Ictiologia
2021-09-01
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| Series: | Neotropical Ichthyology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252021000300208&tlng=en |
| _version_ | 1818950595422191616 |
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| author | Luiza Bangoim Leal David J. Hoeinghaus Zacchaeus G. Compson Angelo A. Agostinho Rodrigo Fernandes Fernando M. Pelicice |
| author_facet | Luiza Bangoim Leal David J. Hoeinghaus Zacchaeus G. Compson Angelo A. Agostinho Rodrigo Fernandes Fernando M. Pelicice |
| author_sort | Luiza Bangoim Leal |
| collection | DOAJ |
| description | Abstract The introduction of non-native predators is a matter of great concern, but their impacts on ecosystem functions remain poorly understood. We investigated how changes in fish diversity following the invasion of Cichla kelberi affected ecosystem functions generated by fish populations. Fish assemblages were sampled in macrophyte patches in a Neotropical impoundment over a 5-year period, before and after the introduction of the predator. We assigned seven ecosystem functions (26 trait-states) to each fish species, and examined how these functions behaved after the invasion. We collected 577 fish belonging to 25 species. Species richness, fish biomass and main species declined significantly over periods. The biomass of ecosystem functions changed significantly over time, and most trait-states declined. Few trait-states were lost, but all functions had at least one trait-state reduced by more than 85%. A null model analysis showed that changes in functions were not driven by species identities, while species richness correlated positively with total biomass and with most functions, suggesting that the loss of taxa and biomass drove observed changes in ecosystem functions. Our study provided evidence that community disassembly associated with the invasion of C. kelberi translated to the decline of several ecosystem functions, affecting energy mobilization and transference. |
| first_indexed | 2024-12-20T09:21:05Z |
| format | Article |
| id | doaj.art-84ae76f90a294d03b175df8ada05a4eb |
| institution | Directory Open Access Journal |
| issn | 1982-0224 |
| language | English |
| last_indexed | 2024-12-20T09:21:05Z |
| publishDate | 2021-09-01 |
| publisher | Sociedade Brasileira de Ictiologia |
| record_format | Article |
| series | Neotropical Ichthyology |
| spelling | doaj.art-84ae76f90a294d03b175df8ada05a4eb2022-12-21T19:45:17ZengSociedade Brasileira de IctiologiaNeotropical Ichthyology1982-02242021-09-0119310.1590/1982-0224-2021-0041Changes in ecosystem functions generated by fish populations after the introduction of a non-native predator (Cichla kelberi) (Perciformes: Cichlidae)Luiza Bangoim Lealhttps://orcid.org/0000-0002-9864-4984David J. Hoeinghaushttps://orcid.org/0000-0003-0363-8723Zacchaeus G. Compsonhttps://orcid.org/0000-0003-2015-3015Angelo A. Agostinhohttps://orcid.org/0000-0002-4707-9444Rodrigo Fernandeshttps://orcid.org/0000-0002-2353-1475Fernando M. Pelicicehttps://orcid.org/0000-0002-9700-1194Abstract The introduction of non-native predators is a matter of great concern, but their impacts on ecosystem functions remain poorly understood. We investigated how changes in fish diversity following the invasion of Cichla kelberi affected ecosystem functions generated by fish populations. Fish assemblages were sampled in macrophyte patches in a Neotropical impoundment over a 5-year period, before and after the introduction of the predator. We assigned seven ecosystem functions (26 trait-states) to each fish species, and examined how these functions behaved after the invasion. We collected 577 fish belonging to 25 species. Species richness, fish biomass and main species declined significantly over periods. The biomass of ecosystem functions changed significantly over time, and most trait-states declined. Few trait-states were lost, but all functions had at least one trait-state reduced by more than 85%. A null model analysis showed that changes in functions were not driven by species identities, while species richness correlated positively with total biomass and with most functions, suggesting that the loss of taxa and biomass drove observed changes in ecosystem functions. Our study provided evidence that community disassembly associated with the invasion of C. kelberi translated to the decline of several ecosystem functions, affecting energy mobilization and transference.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252021000300208&tlng=enBiological invasionEnergy transferenceFish diversityReservoir |
| spellingShingle | Luiza Bangoim Leal David J. Hoeinghaus Zacchaeus G. Compson Angelo A. Agostinho Rodrigo Fernandes Fernando M. Pelicice Changes in ecosystem functions generated by fish populations after the introduction of a non-native predator (Cichla kelberi) (Perciformes: Cichlidae) Neotropical Ichthyology Biological invasion Energy transference Fish diversity Reservoir |
| title | Changes in ecosystem functions generated by fish populations after the introduction of a non-native predator (Cichla kelberi) (Perciformes: Cichlidae) |
| title_full | Changes in ecosystem functions generated by fish populations after the introduction of a non-native predator (Cichla kelberi) (Perciformes: Cichlidae) |
| title_fullStr | Changes in ecosystem functions generated by fish populations after the introduction of a non-native predator (Cichla kelberi) (Perciformes: Cichlidae) |
| title_full_unstemmed | Changes in ecosystem functions generated by fish populations after the introduction of a non-native predator (Cichla kelberi) (Perciformes: Cichlidae) |
| title_short | Changes in ecosystem functions generated by fish populations after the introduction of a non-native predator (Cichla kelberi) (Perciformes: Cichlidae) |
| title_sort | changes in ecosystem functions generated by fish populations after the introduction of a non native predator cichla kelberi perciformes cichlidae |
| topic | Biological invasion Energy transference Fish diversity Reservoir |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252021000300208&tlng=en |
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