The Extinction of the Chinese Paddlefish<i>Psephurus gladius</i>: Transnationalism, Technology Transfer, and Timescape

Scarnecchia, Dennis L.

doi:10.1080/23308249.2023.2201636

Cited by 2 publications

(1 citation statement)

References 141 publications

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“…These structures present obstacles to upstream or downstream movement during the life cycle of salamanders (Jackson, 2003;Taguchi, 2009a), resulting in habitat fragmentation and the loss of genetic connectivity (Blank et al, 2013). The obstruction of waterways through dam building has already contributed to the extinction of other vertebrates, such as the Chinese Paddlefish (Psephurus gladius; Scarnecchia, 2023), and these obstructions are resulting in the decline of freshwater megafauna such as the Russian sturgeon (Acipenser gueldenstaedii; Gesner et al, 2010;He et al, 2017), the Chinese sturgeon (A. sinensis; Wu et al, 2015;He et al, 2017), and the Gharial (Gavialis gangeticus; He et al, 2017;Lang et al, 2019). It is not only freshwater megafauna that are affected but potentially of greater concern is the impact these dams are having on the stocks of diadromous fish; those which require to live in both marine and freshwater habitats to complete their life histories (Tamario et al, 2019).…”

Section: Risks Resulting From Obstruction Of Waterwaysmentioning

confidence: 99%

Protecting Japanese giant salamanders (Andrias japonicus) in the Nawa River Basin, Japan: policy recommendations addressing water pollution and waterway disruption

Borzée,

Angulo,

Meredith

et al. 2024

Front. Amphib. Reptile Sci.

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The Japanese giant salamander, Andrias japonicus, is an iconic but declining species of aquatic amphibian. A population within the Nawa River Basin of Tottori Prefecture persists but faces two significant threats. The first major threat is waterway obstructions, in the form of dams, weirs, and concrete embankments, which severely fragment and degrade the habitat. The second is water pollution, primarily caused by runoff from animal farms. Both threats to A. japonicus can be mitigated with proper actions. We provide science-based recommendations, advocating for the modification of dams and weirs by implementing ladderways to restore habitat connectivity and the provisioning of adequate breeding habitat in the form of artificial nest boxes. We also recommend the implementation of regular water quality monitoring and the enforcement of regulations regarding allowed runoff from animal farms. The Nawa River Basin could also be designated as an official sanctuary area for the Japanese Giant Salamander, lending additional formal protection and providing ecotourism opportunities for economically declining rural areas. Though the threats to A. japonicus are serious, the implementation of these mitigation measures and continual monitoring can allow this remarkable species to thrive.

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Section: Risks Resulting From Obstruction Of Waterwaysmentioning

confidence: 99%

Protecting Japanese giant salamanders (Andrias japonicus) in the Nawa River Basin, Japan: policy recommendations addressing water pollution and waterway disruption

Borzée,

Angulo,

Meredith

et al. 2024

Front. Amphib. Reptile Sci.

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Fish habitat models for a future of novel riverscapes

Hansen,

Comoglio,

Elings

et al. 2024

BioScience

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Multiple anthropogenic forces have pushed river ecosystems into undesirable states with no clear understanding of how they should be best managed. The advancement of riverine fish habitat models intended to provide management insights has slowed. Investigations into theoretical and empirical gaps to define habitat more comprehensively across different scales and ecological organizations are crucial in managing the freshwater biodiversity crisis. We introduce the concept of novel riverscapes to reconcile anthropogenic forcing, fish habitat, limitations of current fish habitat models, and opportunities for new models. We outline three priority data-driven opportunities that incorporate the novel riverscape concept: fish movement, river behavior, and drivers of novelty that all are integrated into a scale-based framework to guide the development of new models. Last, we present a case study showing how researchers, model developers, and practitioners can work collaboratively to implement the novel riverscape concept.

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The Extinction of the Chinese PaddlefishPsephurus gladius: Transnationalism, Technology Transfer, and Timescape

Cited by 2 publications

References 141 publications

Protecting Japanese giant salamanders (Andrias japonicus) in the Nawa River Basin, Japan: policy recommendations addressing water pollution and waterway disruption

Protecting Japanese giant salamanders (Andrias japonicus) in the Nawa River Basin, Japan: policy recommendations addressing water pollution and waterway disruption

Fish habitat models for a future of novel riverscapes

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