Fish reproductive guilds downstream of dams

Vasconcelos, Lilian Paula; Alves, Diego Corrêa; Gomes, Luiz Carlos

doi:10.1111/jfb.12501

Cited by 21 publications

(23 citation statements)

References 26 publications

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“…However, in contrast to temperate systems, in the Neotropics knowledge on specific traits associated with habitat alteration caused by dam closure does not exist for the majority of species due to the lack of studies and the high diversity of these systems. Data availability and previously described responses to habitat alterations related to damming determined the choice of traits to be tested (e.g., Vasconcelos, Alves, & Gomes, ; —reproduction and preference for lotic current; Albrecht, ; —Diet; McManamay & Frimpong, ; —life history; Pelicice et al., —migration). There was therefore a priori limitation on the trait information currently available.…”

Section: Methodsmentioning

confidence: 99%

“…This classification was based on the classification proposed by Suzuki, Pelicice, Luiz, Latini, and Agostinho (), adapted by Vasconcelos et al. () and complemented by the classification used by Agostinho et al. () and Ruffino and Isaac ().…”

Section: Methodsmentioning

confidence: 99%

“…The classification was based on Vasconcelos et al. (), Santos, Ferreira, and Zuanon (), Reis and Lima () and Fishbase (Froese & Pauly, ).…”

Section: Methodsmentioning

confidence: 99%

“…Taxa were classified into four categories according to their migratory behaviours for spawning, fertilisation and parental care: (i) T A B L E 1 Description of six functional traits and 20 trait categories used to characterise fish species with their respective codes long-distance migrants with external fertilisation, but without parental care (LME); (ii) nonmigrants or short-distance migrants with external fertilisation, but without parental care (NEW); (iii) nonmigrants or short-distance migrants with external fertilisation and parental care (NEP); and (iv) nonmigrants or short-distance migrants with internal fertilisation, but without parental care (NIF). This classification was based on the classification proposed by Suzuki, Pelicice, Luiz, Latini, and Agostinho (2004), adapted by Vasconcelos et al (2014) and complemented by the classification used by Agostinho et al (2009) and Ruffino and Isaac (1995).…”

Section: Reproductionmentioning

confidence: 99%

“…Vasconcelos et al (2014),Santos, Ferreira, and Zuanon (2006),Reis and Lima (2009) and Fishbase(Froese & Pauly, 2016).…”

mentioning

confidence: 99%

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Using a trait‐based approach to measure the impact of dam closure in fish communities of a Neotropical River

Lima

Sayanda

Agostinho

et al. 2017

Ecology of Freshwater Fish

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Damming is one of the main causes of the global decline in freshwater biodiversity.Yet, many hydroelectric dams are being built (or planned) in the Neotropics, where the high species diversity and lack of basic ecological knowledge provide a major obstacle to understanding the effects of this environmental change, which has been mostly described from the perspective of taxonomic change. However, this approach does not account for biological function. Trait-based analysis provides an alternative approach to bioassessment. We assessed the impact of dam closure on the functional structure of fish communities of a Neotropical river by applying trait-based analyses to the response of individual traits aggregated at the assemblage level. Fish data were collected during three distinct time periods (1 year before, 1 year after and 5 years after dam closure), at eight sites located downstream of the dam, in the reservoir, transition zone and upstream. The results indicated that reproduction strategies (migration and parental care) and diet (detritivores) were the trait categories mostly affected by the dam, with the response of downstream assemblages differing from upstream of the dam. A trait-based analysis to the impact of damming on fish communities appears to be a promising approach using an initial descriptive analysis of individual traits and regression models of multiple traits that reflect species' adaptation to the new environment. This study provides both an alternative and complementary approach to taxonomic assessment of impacts from damming, contributing towards a more robust evaluation of the response of fish communities to dams. K E Y W O R D Sbiomonitoring, damming, fishes, functional diversity, traits, tropical river

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…The classification was based on Vasconcelos et al. (), Santos, Ferreira, and Zuanon (), Reis and Lima () and Fishbase (Froese & Pauly, ).…”

Section: Methodsmentioning

confidence: 99%

Section: Reproductionmentioning

confidence: 99%

“…Vasconcelos et al (2014),Santos, Ferreira, and Zuanon (2006),Reis and Lima (2009) and Fishbase(Froese & Pauly, 2016).…”

mentioning

confidence: 99%

See 3 more Smart Citations

Using a trait‐based approach to measure the impact of dam closure in fish communities of a Neotropical River

Lima

Sayanda

Agostinho

et al. 2017

Ecology of Freshwater Fish

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Dams in the Amazon: The importance of maintaining free‐flowing tributaries for fish reproduction

Vasconcelos

Alves

Câmara³

et al. 2020

Aquatic Conservation

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Free‐flowing tributaries are important for the maintenance of fish diversity in dammed systems. In relation to the reproduction of fish species, the role of a free‐flowing tributary was evaluated and compared with that of a dammed tributary downstream of large dams in the Madeira River, one of the main tributaries of the Amazon River. Two hypotheses were tested: (i) the densities of the ichthyoplankton differ between the dammed and the free‐flowing tributaries; and (ii) the free‐flowing tributary contributes a greater diversity of fish larvae species to the assemblage structure of the main stem than the dammed tributary. Fish eggs and larvae were sampled at five sites: one in each tributary (Jamari – dammed – and Machado – free‐flowing) and three in the main stem (Madeira River), upstream and downstream from the mouth of each tributary. Fitted Bayesian models showed that the densities both of eggs and larvae were more than twice as high in the free‐flowing tributary than in the dammed tributary. The results also indicated that the free‐flowing tributary makes a major contribution to the fish assemblage structure of the Madeira River, whereas the dammed tributary does not have a significant influence on the main stem assemblage structure. The results demonstrate the importance of conservation and maintenance not only of the Machado River but also of other free‐flowing tributaries in dammed basins, especially those basins with high biodiversity, such as the Amazon. Moreover, this study helps inform the decision‐making process regarding the location of new dams, which is critical in fish diversity conservation.

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Multiscale Investigation of Water Chemistry Effects on Fish Guild Species Richness in Regulated and Nonregulated Rivers of India's Western Ghats: Implications for Restoration

et al. 2020

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Tropical rivers across the world are experiencing rapid degradation and loss of fish species due to flow regulation, pollution, and other anthropogenic pressures. Knowledge of how flow alterations at different scales affect tropical fish diversity remains limited, especially in terms of how resulting changes in water chemistry affect fish communities. We investigated fish guild composition and responses of guild richness to water chemistry in 120 river segments with and without local-scale water removals and pollution. This included two regulated subbasins (with flow regulation by barrages and large-scale water diversions) and two nonregulated subbasins (flows not regulated by these barriers) in India's Western Ghats. Using multivariate ordination and regression models, we identified covariates related to water chemistry and environmental characteristics that explained differences in fish species composition and species richness of three water column position-based fish guilds in the study area. At the subbasin scale, effects of water chemistry were stronger for individual river segments. At the segment scale, no differences in water chemistry were found between segments with and without water removals or pollution in both regulated and nonregulated subbasins. Guild-

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Fish reproductive guilds downstream of dams

Cited by 21 publications

References 26 publications

Using a trait‐based approach to measure the impact of dam closure in fish communities of a Neotropical River

Using a trait‐based approach to measure the impact of dam closure in fish communities of a Neotropical River

Dams in the Amazon: The importance of maintaining free‐flowing tributaries for fish reproduction

Multiscale Investigation of Water Chemistry Effects on Fish Guild Species Richness in Regulated and Nonregulated Rivers of India's Western Ghats: Implications for Restoration

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