2020
DOI: 10.3389/fenvs.2020.579031
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Abstract: Tropical river basins have experienced dramatically increased hydropower development over the last 20 years. These alterations have the potential to cause changes in hydrologic and ecologic systems. One heavily impacted system is the Upper Paraguay River Basin, which feeds the Pantanal wetland. The Pantanal is a Ramsar Heritage site and is one of the world's largest freshwater wetlands. Over the past 20 years, the number of hydropower facilities in the Upper Paraguay River Basin has more than doubled. This pap… Show more

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Cited by 35 publications
(19 citation statements)
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“…Conversely, there were recorded cases of different (mixed) tendencies [27,46]. In the present study, the maximum flows diminished in all rivers, and the tendency of more considerable changes in the shorter maximum flow events was detected.…”
Section: Discussioncontrasting
confidence: 46%
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“…Conversely, there were recorded cases of different (mixed) tendencies [27,46]. In the present study, the maximum flows diminished in all rivers, and the tendency of more considerable changes in the shorter maximum flow events was detected.…”
Section: Discussioncontrasting
confidence: 46%
“…A considerable increase in low pulse number and a decrease in their duration were detected by Zhang et al [46] and Song et al [23]. The frequency and duration of high and low pulses were identified as the most affected elements of the hydrologic regime by Ely et al [27].…”
Section: Discussionmentioning
confidence: 94%
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“…Although lowland hydropower facilities with the largest dams and reservoirs induced the greatest alterations, Timpe and Kaplan noted that for reaches containing single facilities that were either large dams or SHPs, the SHPs induced alterations similar in magnitude to the large dams when scaled to installed capacity (i.e., % HA per MW). Ely et al (2020), in a multiyear analysis of indicators of hydrological alteration, found that high and low pulse counts as well as the number of reversals were the most frequent daminduced impacts in the Upper Paraguay River basin.…”
Section: Discussionmentioning
confidence: 99%
“…In light of the ongoing construction and planning of future SHPs in the Pantanal watershed, there is an urgent need to understand how numerous SHPs on the tributaries may, in aggregate, alter the transport of water, sediments, and nutrients from the uplands into the Pantanal, and as well produce enough barriers to the upstream migration of fishes from the Pantanal to impede their reproduction and reduce their populations. In recognition of these needs, the present study is part of a multidisciplinary research program that has examined many dimensions of the issues surrounding hydroelectric facilities in the tributaries of the Pantanal, including hydrology (this study), sediment transport (Fantin-Cruz et al, 2020), water quality (Oliveira et al, 2020;Fantin da Cruz et al, 2021), and fish and fisheries (Campos et al, 2020;Ely et al, 2020). In this study, evidence for hydropeaking is evaluated based on discharge patterns in river gages downstream of 11 reaches containing a total of 24 hydropower facilities compared to simultaneous measurements at reference gages not influenced by the facilities.…”
Section: Introductionmentioning
confidence: 99%