Adaptive Management to Reduce Nest Inundation of a Critically Endangered Freshwater Turtle: Confirming the Win-win

Espinoza, Thomas; Marshall, Sharon M.; Limpus, Duncan J.; Limpus, Col; McDougall, Andrew

doi:10.1007/s00267-022-01601-2

Cited by 6 publications

(13 citation statements)

References 32 publications

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“…A total of five studies tested the effect of four mitigation actions [Fig. 6, (Espinoza et al, 2021; Espinoza et al, 2022; Ficheux et al, 2014; Pitt et al, 2021; Stone et al, 2014)]. Of these studies, three were from temperate regions with long-term data collection spanning 50 (Pitt et al, 2021), 20 (Stone et al, 2014) and 17 years (Ficheux et al, 2014) and two were relatively short term 3 year studies from sub-tropical Australia (Espinoza et al, 2021; Espinoza et al, 2022).…”

Section: Resultsmentioning

confidence: 99%

“…6, (Espinoza et al, 2021; Espinoza et al, 2022; Ficheux et al, 2014; Pitt et al, 2021; Stone et al, 2014)]. Of these studies, three were from temperate regions with long-term data collection spanning 50 (Pitt et al, 2021), 20 (Stone et al, 2014) and 17 years (Ficheux et al, 2014) and two were relatively short term 3 year studies from sub-tropical Australia (Espinoza et al, 2021; Espinoza et al, 2022). One article (Pitt et al, 2021) documented the effect of dam removal on the northern map turtle ( Graptemys geographica ).…”

Section: Resultsmentioning

confidence: 99%

“…A study from the USA (Stone et al, 2014) demonstrated the potential of volunteers to help implement actions (dam repair and silt removal) to maintain artificial impoundments for the Sonora mud turtle ( Kinosternon sonoriense ). Another from southern France (Ficheux et al, 2014) showed how earlier flooding across wetland areas improved hibernation success for the European pond turtle ( Emys orbicularis ); whilst studies from Australia (Espinoza et al, 2021; Espinoza et al, 2022) demonstrated how environmental flow management could facilitate movements of adult Mary River turtles ( Elusor macrurus ) and improve nesting success for the Endangered white-throated snapping turtle ( Elseya albagula ).…”

Section: Resultsmentioning

confidence: 99%

“…Nests of turtle species that use terrestrial nesting habitats (e.g. river banks) may be at greater risk from flooding (Bodie, 2001), as is the case of species of the South American genus Podocnemis (Eisemberg et al, 2016; Gallego-García & Castaño-Mora, 2008; Norris et al, 2018a; Norris et al, 2020), genus Elseya in Austrailia (Espinoza et al, 2022), and of the North American Emydidae and Trionychidae (Pitt et al, 2021; Tornabene et al, 2018). Changes to a river’s annual discharge cycle caused by dams can therefore reduce the availability of nesting areas (Bárcenas-García et al, 2022; Norris et al, 2018a; Tornabene et al, 2018), as well as the duration of low water levels, which may affect the behavior and nesting success of these species (Eisemberg et al, 2016; Espinoza et al, 2022; Tornabene et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

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

Bárcenas-García

Michalski

Morgan

et al. 2021

Preprint

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Dams create many impacts on 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 and feeding habitats, changes to resource availability and reduced dispersal. 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 the impact of dams. The search produced 43 published articles documenting dam impacts on 29 freshwater turtle species from seven families (Chelidae, Chelydridae, Emydidae, Geoemydidae, Kinosternidae, Podocnemididae and Trionychidae) in 13 countries. More than a third of studies (41.9%, n = 18) focused on nine North American species of the Emydidae. Few studies were found from Europe and Asia and none from Africa. The number of studies, life-history stage studied and threat status differed significantly between temperate and tropical latitudes. Most studies were from temperate latitudes, where studies focused more on adults and less threatened species compared with tropical latitudes. Studies evaluated dam impacts as barriers and changes to water flow and quality, but no studies were found that assessed turtles and changes to land cover or mercury caused by dams. More than half of the studies (59%, n = 24) suggested actions to help mitigate dam impacts. Yet, only four studies on three temperate and one tropical species documented the effect of interventions (dam removal, flow management, artificial pond maintenance and community-based action). These findings demonstrate a lack of documented evidence evaluating dam impacts on freshwater turtles particularly in tropical regions. This lack of evidence reinforces the importance of strengthening and maintaining robust long-term studies of freshwater turtles needed to develop effective conservation actions for this group of vertebrates.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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

Bárcenas-García

Michalski

Morgan

et al. 2021

Preprint

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“…A total of five studies (Fig. 6) tested the effect of four mitigation actions (Espinoza et al, 2021;Espinoza et al, 2022; Table 3. Impact level (negative, positive, unknown, or unstudied) from each threat identified and associated dam impacts on freshwater river turtles.…”

Section: Mitigation Actionsmentioning

confidence: 99%

Impacts of Dams on Freshwater Turtles: A Global Review to Identify Conservation Solutions

Bárcenas-García

Michalski

Morgan

et al. 2022

Tropical Conservation Science

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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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Win–win Strategies for Transboundary Water Management During the GERD Operating Stage

El-Nashar

Elyamany

2022

Water Resour Manage

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The list of challenges associated with the operation of the Grand Ethiopian Resistance Dam (GERD) now includes global concern over climate change. Due to their inability to reach a legally enforceable agreement on how to address watershed degradation and water quality, riparian nations are already experiencing peace and security issues. A win–win strategy seeks to develop collaborative solutions to transboundary water management problems while maximizing the benefits for both parties. This paper aims to develop, evaluate, and analyze win–win transboundary water management strategies during the operating stage of GERD. Using value engineering (VE), functional analysis system technique (FAST), and life cycle cost (LCC), the optimal win–win strategy is determined. The study uncovered four distinct value options for various win–win strategies. According to the study results, the third win–win strategy is the most effective way to help both upstream and downstream nations retain peace, as it seeks to encourage riparian countries to collaborate by: i) developing cooperative regulatory policy; ii) switching to renewable energy supported by GERD; and iii) reducing water loss. This study advances our understanding of the topic by providing policymakers with a tool to: i) evaluate win–win strategies for managing transboundary water; and ii) incorporate the added value and functionality into policies regarding transboundary water management.

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Adaptive Management to Reduce Nest Inundation of a Critically Endangered Freshwater Turtle: Confirming the Win-win

Cited by 6 publications

References 32 publications

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

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

Impacts of Dams on Freshwater Turtles: A Global Review to Identify Conservation Solutions

Win–win Strategies for Transboundary Water Management During the GERD Operating Stage

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