2022
DOI: 10.1177/19400829221103709
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Impacts of Dams on Freshwater Turtles: A Global Review to Identify Conservation Solutions

Abstract: Background and Research Aims Dams impact freshwater ecosystems and biodiversity. Freshwater turtles are at direct and indirect risk due to changes caused by damming including the loss of terrestrial and aquatic nesting habitats, changes to food availability, and blocking movement. Effective management of these impacts requires robust evidence in order to gain an understanding of conservation solutions that work. Methods We reviewed the global scientific literature that evaluated the impact of dams on freshwate… Show more

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Cited by 10 publications
(4 citation statements)
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“…Dams can have profound effects on freshwater biodiversity; however, these effects have not been extensively studied in freshwater turtle populations, especially threatened species. A recent literature review 44 on the effects of dams in turtle populations found only 43 published studies and emphasized the need for more evaluations for these long-lived organisms. Most of these studies focused on flow changes, barrier effects, and nesting success influenced by dams 44 .…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…Dams can have profound effects on freshwater biodiversity; however, these effects have not been extensively studied in freshwater turtle populations, especially threatened species. A recent literature review 44 on the effects of dams in turtle populations found only 43 published studies and emphasized the need for more evaluations for these long-lived organisms. Most of these studies focused on flow changes, barrier effects, and nesting success influenced by dams 44 .…”
Section: Discussionmentioning
confidence: 99%
“…A recent literature review 44 on the effects of dams in turtle populations found only 43 published studies and emphasized the need for more evaluations for these long-lived organisms. Most of these studies focused on flow changes, barrier effects, and nesting success influenced by dams 44 . Previous reports on the lower Pecos River indicate climate change and anthropogenic processes including dam construction have significantly altered stream flow in relatively recent years 2 , 3 , 5 , subsequently increasing salinity levels throughout the river.…”
Section: Discussionmentioning
confidence: 99%
“…The implementation of minimization and mitigation actions to ameliorate negative impacts caused by dams remains limited for Amazonian vertebrates due to a lack of evidence as to efficacy of available options ( Bárcenas-García et al, 2022b ; Berthinussen, Smith & Sutherland, 2021 ; Santos, Michalski & Norris, 2021 ). For example, the installation of dam bypass channels could allow aquatic mammals to swim around dams and access habitats on both sides, which could be particularly relevant when multiple dams are located along the same river as in our study area.…”
Section: Discussionmentioning
confidence: 99%
“…Because of Australia's peculiar climatic attributes (exceptionally low precipitation, unpredictability), water resource development, which alters the magnitude, frequency, and timing of flows, is of major concern (Bunn & Arthington, 2002; Deeth & Coleman, 2022; Georges, Webster, et al, 2002). Conversion of lotic to lentic habitat via dams and weirs (Bárcenas‐García et al, 2022; Limpus et al, 2009) restricts turtle movement (Bower et al, 2012), eliminates riffle and riparian habitat important for some species (Bodie, 2001; Tucker et al, 2001), alters food availability (Tucker et al, 2012), favours lentic turtle species over other riverine species via ecosystem displacement (but see Clark et al, 2018), alters water temperature profiles downstream (Bae et al, 2014), and moderates flow events and floodplain inundation (Sparks, 1995). These impacts are exacerbated by land use change in catchments, which increases sedimentation, alters substratum characteristics, increases turbidity, results in eutrophication of what were formerly oligotrophic streams, and degrades or fragments riparian vegetation with attendant impacts on freshwater biota, including turtles.…”
Section: Key Threatening Processesmentioning
confidence: 99%