Non-native fish species in Neotropical freshwaters: how did they arrive, and where did they come from?

Gubiani, Éder André; Ruaro, Renata; Ribeiro, Vinícius Ricardo; Eichelberger, Ana Cristina Algeri; Bogoni, Raquel Fernanda; Lira, Angélica Dorigon; Cavalli, Daiane; Piana, Pitágoras Augusto; Graça, Weferson Júnio da

doi:10.1007/s10750-018-3617-9

Cited by 49 publications

(42 citation statements)

References 67 publications

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“…In addition to dams, there are numerous other negative impacts caused by human activities that threaten freshwater biodiversity in Brazil. For instance, non-native freshwater species have been introduced for aquaculture or other activities for decades in the country (e.g., Magalhães et al, 2005;Coelho & Henry, 2017;Pelicice et al, 2017;Coelho, Fernandez, Cesar, Ruocco, & Henry, 2018;Gubiani et al, 2018), which can result in loss of native species and biotic homogenization (Mack et al, 2000;Simberloff et al, 2013;Vitule, Freire, Vazquez, Nuñez, & Simberloff, 2012). Other harmful actions, such as mining, have high impact on rivers (e.g., Fernandes et al, 2016;Tófoli et al, 2017), and existing PAs will be inefficient in protecting biodiversity from these perturbations.…”

Section: The Need For More Pa Smentioning

confidence: 99%

Protected areas: A focus on Brazilian freshwater biodiversity

Azevedo‐Santos

Frederico

Fagundes³

et al. 2018

Diversity and Distributions

113

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Brazil has a variety of aquatic ecosystems and rich freshwater biodiversity, but these components have been constantly damaged by the expansion of unsustainable activities. An array of different conservation strategies is needed, especially the creation of protected areas (PAs, hereafter). However, Brazil's PAs are biased towards terrestrial ecosystems and we argue that current PAs have limited efficacy in the protection of freshwater biodiversity. New PAs should better consider aquatic environments, covering entire basins, rivers and other freshwater habitats. We recommend ways to implement these PAs and provide guidance to avoid social impacts. Freshwater systems in Brazil provide essential goods and services but these ecosystems are being rapidly degraded and will be lost if not adequately protected.

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Section: The Need For More Pa Smentioning

confidence: 99%

Protected areas: A focus on Brazilian freshwater biodiversity

Azevedo‐Santos

Frederico

Fagundes³

et al. 2018

Diversity and Distributions

113

View full text Add to dashboard Cite

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“…Deliberate introduction of piscivorous species is a common practice in Brazilian reservoirs, facilitating the deleterious effects of the invaders (Agostinho, Gomes, Verı, & Okada, ). The main effects of non‐native species is the reduction of richness and abundance of native species, or even their extinction (Daga & Gubiani, ; Gubiani et al, ; Whittier et al, , ). The relationship between non‐native species and altered environments was verified in the present study, as well as in Ruaro et al ().…”

Section: Discussionmentioning

confidence: 99%

Fish‐based multimetric index for evaluating land use effects on large neotropical reservoirs

et al. 2019

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Because of their importance to human well-being and ecosystem services, it is important to have cost-effective methods for assessing reservoir ecological condition or health. To do so, we constructed a preliminary reservoir fish assemblage index (RFAI) to assess the effect of predominantly agricultural land use on two oligotrophic neotropical reservoirs that differed in disturbance level. We first determined the disturbance levels around each reservoir through use of an integrated disturbance index (IDI). The IDI was calculated from the combination of land use metrics at local (Local Disturbance Index -LDI) and buffer scales (Buffer Disturbance Index -BDI).Afterwards, we employed the IDI to assess the response of candidate metrics to environmental disturbance in the RFAI construction. The final RFAI included three metrics selected by range, responsiveness, and redundancy tests. Metrics were scored continuously, and the final RFAI was divided in four quality classes: very poor, poor, acceptable and good. The results showed a clear disturbance gradient in both reservoirs with the IDI values varying between 0.07 and 1.33. However, the IDI values were greater around Volta Grande reservoir because of the predominance of agriculture land use (at local and buffer scales). The RFAI scores in Nova Ponte reservoir were significantly higher than in Volta Grande. All the sites scored as very poor or poor were in Volta Grande and all the sites scored as good were in Nova Ponte.In addition, RFAI scores in the reservoir river arms did not differ from those in the reservoir main body, indicating that it was applicable to both habitat types. Finally, our RFAI scores indicated no significant seasonal difference in the two reservoirs; however, the rainy season produced a greater range and more low scores, particularly in Volta Grande. We related this result to the harmful effect of agriculture and the surface runoff of fertilizers, herbicides, and pesticides. Thus, the RFAI was effective in detecting agricultural impacts at the site scale, even in oligotrophic reservoirs. K E Y W O R D Sagriculture, oligotrophic, RFAI, Upper Paraná River Basin

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“…Such geographical isolation guaranteed to the Iguazu River Basin a small‐sized fish fauna, highly endemic (Baumgartner et al, ), and therefore a global biodiversity ecoregion (Abell et al, ; Hales & Petry, ). This basin is particularly vulnerable to non‐native fish introductions, however, a recent study showed that 27 fish species have already been introduced in the Iguazu River Basin (Gubiani et al, ). Such introductions cause negative impacts on endemic fish fauna, increasing the risk of extinctions (Daga, Debona, Abilhoa, Gubiani, & Vitule, ; Gubiani et al, ).…”

Section: Introductionmentioning

confidence: 99%

“…This basin is particularly vulnerable to non‐native fish introductions, however, a recent study showed that 27 fish species have already been introduced in the Iguazu River Basin (Gubiani et al, ). Such introductions cause negative impacts on endemic fish fauna, increasing the risk of extinctions (Daga, Debona, Abilhoa, Gubiani, & Vitule, ; Gubiani et al, ).…”

Section: Introductionmentioning

confidence: 99%