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PreprintCited by 28Turtle Biology and ConservationFish Ecology and Management StudiesEnvironmental Conservation and Management

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Impacts of dams on freshwater turtles: a global review to identify conservation solutions

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Bárcenas-García, Andrea, Michalski, Fernanda, Morgan, William H., Smith, Rebecca K., Sutherland, William J., Gibbs, James P., Norris, Darren·2021·Tropical Conservation Science
DOI 10.1101/2021.10.21.465338

Preprint — published as 10.1177/19400829221103709 · Paper page

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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 freshwater turtles, and carried out additional searches of literature published in seventeen languages for studies evaluating actions to mitigate dam impacts. Results: The search produced 47 published articles documenting dam impacts on 30 freshwater turtle species from seven families (Chelidae, Chelydridae, Emydidae, Geoemydidae, Kinosternidae, Podocnemididae and Trionychidae) in 13 countries. Few studies were found from Europe and Asia and none from Africa. Most studies were from temperate latitudes, where studies focused more on adults and less threatened species compared with tropical latitudes. More than half of the studies (57%, n = 27) suggested actions to help mitigate dam impacts. Yet, only five studies (three temperate and two tropical) documented the effect of interventions (dam removal, flow management, artificial pond maintenance and community-based action). Conclusion: These findings demonstrate a serious lack of documented evidence evaluating mitigation actions for dam impacts on freshwater turtles. Implications for Conservation: This lack of evidence reinforces the importance of strengthening and maintaining robust long-term studies needed to develop effective and adaptive conservation actions for this group of threatened vertebrates particularly in tropical regions.

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Metadata

Authors
Bárcenas-García, A., Michalski, F., Morgan, W. H., Smith, R. K., Sutherland, W. J., Gibbs, J. P., & Norris, D.
Affiliations
  • Universidade Federal do Amapá (BR)
  • University of Cambridge (GB)
  • State University of New York (US)
Corresponding author
Norris, Darren
ORCID
Venue
Tropical Conservation Science
Publisher
openRxiv
Published
2021-10-23
Volume
15
ISSN
1940-0829 (ISSN-L)
DOI
10.1101/2021.10.21.465338
OpenAlex
W4285264065
Cited by
28
References
189
Citations by year
2026: 6 · 2025: 5 · 2024: 6 · 2023: 4 · 2022: 7
FWCI
3.74
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • Tropical Conservation Science (publishedVersion, cc-by-nc)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc)
  • Apollo (University of Cambridge) (submittedVersion, cc-by-nc)
  • Apollo
Funders
  • Arcadia Fund
  • MAVA Foundation
  • Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Topics
  • Physical Sciences › Environmental Science › Nature and Landscape Conservation › Turtle Biology and Conservation
  • Physical Sciences › Environmental Science › Nature and Landscape Conservation › Fish Ecology and Management Studies
  • Physical Sciences › Environmental Science › Management, Monitoring, Policy and Law › Environmental Conservation and Management
Keywords
dams, freshwater turtles, dam impacts, turtle conservation, habitat fragmentation, flow management, dam removal, artificial ponds, community-based conservation, threatened species, tropical freshwater ecosystems

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