Spatial and Temporal Distribution Dynamics of the Yangtze Finless Porpoise at the Confluence of the Yangtze and Wanhe Rivers: Implications for Conservation

Chen, Minmin; Zhang, Xiaoke; Wang, Kexiong; Liu, Zhigang; An, Wan; Yu, Dan; Ji, Hong; Peng, Fangzhen

doi:10.17582/journal.pjz/2017.49.6.2263.2269

Cited by 4 publications

(3 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Brazil, Araguaian dolphin densities were 68% lower downstream of the Tucuruí dam compared to upstream and dolphins shifted their range in response to dam construction (Paschoalini et al, 2020). Similar effects have been observed in other river cetacean species, such as the Yangtze finless porpoise Neophocaena asiaeorientalis asiaeorientalis after the construction of the Three Gorges and Gezhouba dams, which caused flow regime alterations and reductions in fish spawning (Wang, 2009; Fang et al, 2014; Chen et al, 2017).…”

Section: Discussionsupporting

confidence: 66%

Satellite-monitored movements of the Amazon River dolphin and considerations for their conservation

Campbell

Alfaro‐Shigueto

Mangel

et al. 2023

Oryx

View full text Add to dashboard Cite

The Amazon River dolphin Inia geoffrensis occurs throughout the basins of the Amazon and Orinoco Rivers and is categorized as Endangered on the IUCN Red List. Using satellite tracking data from eight dolphins (one female and seven males) in the Peruvian Amazon, we demonstrate that these dolphins inhabit a variety of habitat types and have core areas and home range areas of variable magnitudes. To gain a better understanding of how threats affect these dolphins, we examined the distance of dolphin records to locations of current and potential future anthropogenic threats. On average, dolphin home ranges overlapped with fisheries by 89%. Dolphins were found at an average distance of 252 km from the nearest proposed dam and 125 km from the nearest proposed dredging site. Given that many of these threats are still in the planning stage, we advise the government to consider the negative effects these activities have already had on other riverine species before proceeding. Additionally, efforts should be made to expand river dolphin tracking programmes to span multiple seasons, to track more females at our study sites and to increase the numbers tracked overall in other areas to improve our knowledge of the species' movement patterns.

show abstract

Section: Discussionsupporting

confidence: 66%

Satellite-monitored movements of the Amazon River dolphin and considerations for their conservation

Campbell

Alfaro‐Shigueto

Mangel

et al. 2023

Oryx

View full text Add to dashboard Cite

show abstract

“…Large upstream dams especially threaten the Yangtze finless porpoise, as their habitat is modified by the Three Gorges and Gezhouba dams as well as other smaller dams, regulators, and embankments in tributaries and appended lakes (López-Pujol & Ren 2009, Zhao et al 2011, Fang et al 2014. Although the Three Gorges Dam, completed in 2010, is upstream of the current distribution of this porpoise and also of the historical distribution of the baiji, it has altered flow regimes and reduced fish spawning (Zhao et al 2008, Wang 2009, Fang et al 2014, Chen et al 2017.…”

Section: Water Infrastructure Projectsmentioning

confidence: 99%

“…Past research has used direct observation (e.g. , 2006, Choudhary et al 2012, Mintzer et al 2016, Chen et al 2017), but tracking technologies such as VHF and satellite telemetry have been successful with Amazon river dolphins , Mosquera-Guerra et al 2021 and could be applied to other species.…”

Section: Spatial/temporal Ecology and Ecosystem Requirementsmentioning

confidence: 99%

Challenges and priorities for river cetacean conservation

Campbell

Alfaro‐Shigueto

Aliaga-Rossel

et al. 2022

Endang. Species. Res.

View full text Add to dashboard Cite

River cetaceans are particularly vulnerable to anthropogenic impacts due to their constrained ranges in freshwater systems of China, South Asia, and South America. We undertook an exhaustive review of 280 peer-reviewed papers and grey literature reports (1998-2020) to examine the current status of knowledge regarding these cetaceans and their conservation. We aimed to better understand the scale of threats they face, and to identify and propose priority future efforts to better conserve these species. We found that the species have been studied with varying frequency and that most of the research on threats has focused on habitat degradation and fragmentation (43%, mainly driven by dams and extractive activities such as sand mining and deforestation), and fishery interactions (39%, in the form of bycatch and direct take). These threats occur across all species, but more information is needed, primarily on quantifying the population impacts as a basis for designing mitigation measures. Other threats identified include pollution, vessel collisions, traditional use, and poorly managed tourism. Emerging methods such as environmental DNA and unmanned aerial vehicles are described for studying these species. Promising conservation interventions include cetacean-specific protected areas, natural ex situ protection, community-led conservation, and education programmes. However, transnational political will is required for a step change towards broad-scale protection in freshwater environments. In addition, we propose increasing capacity building, developing management plans, working closely with fishing communities, enhancing public awareness, expanding regional collaborations, and diversifying funding.

show abstract

The dynamics of river confluences and their effects on the ecology of aquatic environment: A review

Yuan

Tang

et al. 2022

J Hydrodyn

View full text Add to dashboard Cite

Spatial and Temporal Distribution Dynamics of the Yangtze Finless Porpoise at the Confluence of the Yangtze and Wanhe Rivers: Implications for Conservation

Cited by 4 publications

References 5 publications

Satellite-monitored movements of the Amazon River dolphin and considerations for their conservation

Satellite-monitored movements of the Amazon River dolphin and considerations for their conservation

Challenges and priorities for river cetacean conservation

The dynamics of river confluences and their effects on the ecology of aquatic environment: A review

Contact Info

Product

Resources

About