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  • 1
    Online Resource
    Online Resource
    Supplementary material 1 from: Ng TH, Jeratthitikul E, Sutcharit C, Chhuoy S, Pin K, Pholyotha A, Siriwut W, Srisonchai R, Hogan ZS, Ngor PB (2020) Annotated checklist of freshwater molluscs from the largest freshwater lake in Southeast Asia. ZooKeys 958: 107-141. https://doi.org/10.3897/zookeys.958.53865
    Pensoft Publishers ; 2020
    In:  ZooKeys Vol. 958 ( 2020-08-11), p. 107-141
    Details
    In: ZooKeys, Pensoft Publishers, Vol. 958 ( 2020-08-11), p. 107-141
    Abstract: The Tonle Sap Lake in Cambodia is a crucial freshwater biodiversity hotspot and supports one of the world’s largest inland fisheries. Within the Tonle Sap basin, freshwater molluscs provide vital ecosystem services and are among the fauna targetted for commercial harvesting. Despite their importance, freshwater molluscs of the Tonle Sap basin remain poorly studied. The historical literature was reviewed and at least 153 species of freshwater molluscs have been previously recorded from throughout Cambodia, including 33 from the Tonle Sap basin. Surveys of the Tonle Sap Lake and surrounding watershed were also conducted and found 31 species, 15 bivalves (five families) and 16 gastropods (eight families), in the Tonle Sap basin, including three new records for Cambodia ( Scaphula minuta , Novaculina siamensis , Wattebledia siamensis ), the presence of globally invasive Pomacea maculata and potential pest species like Limnoperna fortunei . This study represents the most comprehensive documentation of freshwater molluscs of the Tonle Sap basin, and voucher specimens deposited at the Inland Fisheries Research and Development Institute, Cambodia, represent the first known reference collection of freshwater molluscs in the country. In order to combat the combined anthropogenic pressures, including invasive species, climate change and dams along the Mekong River, a multi-pronged approach is urgently required to study the biodiversity, ecology, ecosystem functioning of freshwater molluscs and other aquatic fauna in the Tonle Sap basin.
    Type of Medium: Online Resource
    ISSN: 1313-2970 , 1313-2989
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    DOI: 10.3897/zookeys.958.53865
    DOI: 10.3897/zookeys.958.53865.figure1
    DOI: 10.3897/zookeys.958.53865.figure2
    DOI: 10.3897/zookeys.958.53865.figure3
    DOI: 10.3897/zookeys.958.53865.figure4
    DOI: 10.3897/zookeys.958.53865.figure5
    DOI: 10.3897/zookeys.958.53865.figure6
    DOI: 10.3897/zookeys.958.53865.suppl1
    Language: Unknown
    Publisher: Pensoft Publishers
    Publication Date: 2020
    detail.hit.zdb_id: 2445640-8
    SSG: 12
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  • 2
    Online Resource
    Online Resource
    Dams threaten world’s largest inland fishery
    Springer Science and Business Media LLC ; 2018
    In:  Nature Vol. 563, No. 7730 ( 2018-11), p. 184-184
    Details
    In: Nature, Springer Science and Business Media LLC, Vol. 563, No. 7730 ( 2018-11), p. 184-184
    Type of Medium: Online Resource
    ISSN: 0028-0836 , 1476-4687
    URL: Article
    DOI: 10.1038/d41586-018-07304-1
    RVK:
    TA 1000
    RVK:
    UA 1000
    RVK:
    WA 15000
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2018
    detail.hit.zdb_id: 120714-3
    detail.hit.zdb_id: 1413423-8
    SSG: 11
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  • 3
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    Online Resource
    Reply to: ‘Flooding is a key driver of the Tonle Sap dai fishery in Cambodia’
    Springer Science and Business Media LLC ; 2021
    In:  Scientific Reports Vol. 11, No. 1 ( 2021-02-15)
    Details
    In: Scientific Reports, Springer Science and Business Media LLC, Vol. 11, No. 1 ( 2021-02-15)
    Type of Medium: Online Resource
    ISSN: 2045-2322
    URL: Article
    DOI: 10.1038/s41598-021-81437-8
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2021
    detail.hit.zdb_id: 2615211-3
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  • 4
    Online Resource
    Online Resource
    Fish biodiversity declines with dam development in the Lower Mekong Basin
    Springer Science and Business Media LLC ; 2023
    In:  Scientific Reports Vol. 13, No. 1 ( 2023-05-26)
    Details
    In: Scientific Reports, Springer Science and Business Media LLC, Vol. 13, No. 1 ( 2023-05-26)
    Abstract: Hydropower dams are a source of renewable energy, but dam development and hydropower generation negatively affect freshwater ecosystems, biodiversity, and food security. We assess the effects of hydropower dam development on spatial–temporal changes in fish biodiversity from 2007 to 2014 in the Sekong, Sesan, and Srepok Basins—major tributaries to the Mekong River. By analyzing a 7-year fish monitoring dataset, and regressing fish abundance and biodiversity trends against cumulative number of upstream dams, we found that hydropower dams reduced fish biodiversity, including migratory, IUCN threatened and indicator species in the Sesan and Srepok Basins where most dams have been constructed. Meanwhile, fish biodiversity increased in the Sekong, the basin with the fewest dams. Fish fauna in the Sesan and Srepok Basins decreased from 60 and 29 species in 2007 to 42 and 25 species in 2014, respectively; while they increased from 33 in 2007 to 56 species in 2014 in the Sekong Basin. This is one of the first empirical studies to show reduced diversity following dam construction and fragmentation, and increased diversity in less regulated rivers in the Mekong River. Our results underscore the importance of the Sekong Basin to fish biodiversity and highlight the likely significance of all remaining free-flowing sections of the Lower Mekong Basin, including the Sekong, Cambodian Mekong, and Tonle Sap Rivers to migratory and threatened fish species. To preserve biodiversity, developing alternative renewable sources of energy or re-operating existing dams to increase power generation are recommended over constructing new hydropower dams.
    Type of Medium: Online Resource
    ISSN: 2045-2322
    URL: Article
    DOI: 10.1038/s41598-023-35665-9
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2023
    detail.hit.zdb_id: 2615211-3
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  • 5
    Online Resource
    Online Resource
    Declines in the Mekong’s Megadiverse Larval Fish Assemblages: Implications for Sustainable Development
    MDPI AG ; 2023
    In:  Sustainability Vol. 15, No. 18 ( 2023-09-11), p. 13535-
    Details
    In: Sustainability, MDPI AG, Vol. 15, No. 18 ( 2023-09-11), p. 13535-
    Abstract: Migratory fishes of the Mekong Basin are facing challenges from human-induced stressors. Quantifying the patterns of fish’s early life stages provides important information on spawning seasons, spawning and nursery habitats, reproductive strategies, migration and dispersal patterns, and stock status. However, the ecology of the Mekong larval fishes, including patterns and drivers of larval fish dispersal, is not well understood. Here, we investigate the temporal variability of drifting larval and juvenile fish assemblages in the Cambodian Mekong River and identify their environmental drivers using long-term (10 year) daily fish larval/juvenile data collections. We found that, in the Mekong main channel, the larval and juvenile assemblages were dominated by longitudinal migrants from the families Cyprinidae and Pangasiidae. Peak abundance and richness were found to occur in July and August, respectively. We detected a significant decline in larval and juvenile abundance and richness over the study period. Cross-wavelet analysis revealed that water levels always lead larval abundance, but lag richness. In addition, cross-correlation analysis observed that peak abundance and richness occurred eight weeks and one week, respectively, before the peak water level. We also discovered that species abundance and richness had a strongly positive relationship with maximum water levels. Variation in fish larval and juvenile abundance and richness was also related to total phosphorus, nitrate, alkalinity, and conductivity. Maximum water levels and the key water quality parameters (e.g., phosphorus, nitrate, alkalinity, and conductivity) significantly influence larval and juvenile fish abundance and richness patterns. Therefore, safeguarding natural seasonal flows, especially maximum flows associated with the peak flood pulse, as well as maintaining good water quality, are key to the reproductive success of many migratory fishes and effective dispersal of offspring to the lower floodplain for nursing, rearing, and growth. Clean and unregulated rivers support productive and diverse fisheries.
    Type of Medium: Online Resource
    ISSN: 2071-1050
    URL: Article
    DOI: 10.3390/su151813535
    Language: English
    Publisher: MDPI AG
    Publication Date: 2023
    detail.hit.zdb_id: 2518383-7
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  • 6
    Online Resource
    Online Resource
    Daily otolith ring validation, age composition, and origin of the endangered striped catfish in the Mekong
    Elsevier BV ; 2022
    In:  Global Ecology and Conservation Vol. 33 ( 2022-01), p. e01953-
    Details
    In: Global Ecology and Conservation, Elsevier BV, Vol. 33 ( 2022-01), p. e01953-
    Type of Medium: Online Resource
    ISSN: 2351-9894
    URL: Article
    DOI: 10.1016/j.gecco.2021.e01953
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2022
    detail.hit.zdb_id: 2814786-8
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  • 7
    Online Resource
    Online Resource
    Threatened fishes of the world: Pangasianodon gigas Chevey, 1931 (Pangasiidae)
    Springer Science and Business Media LLC ; 2004
    In:  Environmental Biology of Fishes Vol. 70, No. 3 ( 2004-07), p. 210-210
    Details
    In: Environmental Biology of Fishes, Springer Science and Business Media LLC, Vol. 70, No. 3 ( 2004-07), p. 210-210
    Type of Medium: Online Resource
    ISSN: 0378-1909 , 1573-5133
    URL: Article
    DOI: 10.1023/B:EBFI.0000033487.97350.4c
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2004
    detail.hit.zdb_id: 196790-3
    detail.hit.zdb_id: 1497685-7
    SSG: 21,3
    SSG: 12
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  • 8
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    Online Resource
    Hydropower Dam Development and Fish Biodiversity in the Mekong River Basin: A Review
    MDPI AG ; 2023
    In:  Water Vol. 15, No. 7 ( 2023-04-01), p. 1352-
    Details
    In: Water, MDPI AG, Vol. 15, No. 7 ( 2023-04-01), p. 1352-
    Abstract: Over the last few decades, considerable concern has been expressed about the threat of Mekong River Basin hydropower dams to a range of important freshwater riverine fisheries, particularly for fish that seasonally migrate long distances. However, much less attention has been given to the threat of hydropower dams to fish biodiversity in the high-diversity Mekong River Basin, the focus of this paper. Through reviewing the existing state of knowledge regarding Mekong River Basin fish biodiversity, and threats to it, we argue that even though no species are definitively known to have been extirpated from the Mekong River Basin to date, hydropower dam development and various other developments nevertheless pose a serious threat to fish biodiversity. Indeed, dams typically significantly block fish migrations and fish larvae distribution, cause river fragmentation, fundamentally alter river hydrology, and change water quality, all factors that have the potential to intersect with each other and lead to significant species extirpation and extinction, or in some cases, functional extinction, when a small population remains but the important larger population is lost permanently. The circumstances are further exacerbated by the lag time between impact and when that impact becomes evident, cumulative impacts, a lack of consistent data collection, including the collection of base-line data, and insufficient post-project research related to biodiversity. We contend that much more could and should be done to ensure that the Mekong River basin’s exceptional fish biodiversity is not variously diminished and destroyed during the coming years.
    Type of Medium: Online Resource
    ISSN: 2073-4441
    URL: Article
    DOI: 10.3390/w15071352
    Language: English
    Publisher: MDPI AG
    Publication Date: 2023
    detail.hit.zdb_id: 2521238-2
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  • 9
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    Online Resource
    Temporal Dynamics of Fish Assemblages as a Reflection of Policy Shift from Fishing Concession to Co-Management in One of the World’s Largest Tropical Flood Pulse Fisheries
    MDPI AG ; 2020
    In:  Water Vol. 12, No. 11 ( 2020-10-23), p. 2974-
    Details
    In: Water, MDPI AG, Vol. 12, No. 11 ( 2020-10-23), p. 2974-
    Abstract: Inland fisheries management in Cambodia has undergone two major policy reforms over the last two decades. These reforms led to the abolishment of a century-old commercial fishing lot system in 2012 and the establishment of new fish sanctuary and community fishing areas. However, the status of fisheries and fish assemblages following the reforms is not well understood. Here, we investigated the temporal changes in fish catch weight and fish assemblage structure for the period 1995–2000 before fishing lot abolishment (BLA) and for the period 2012–2015 after the removal of all fishing lots (after lot abolishment-ALA) using time-series fish catch data recorded from the Tonle Sap Lake (TSL), one of the world largest inland fisheries. We found (i) mean catch trends vary seasonally, with stable catch trends during the BLA and decreasing catch trends during the ALA and (ii) significant shifts in fish assemblage composition, notably a shift from large-bodied, migratory, and/or predatory species during the BLA toward more short-distance migratory and/or floodplain, small-bodied species during the ALA. Fishing lot abolishment coincided with substantial changes to floodplain habitats and increases in fishing pressure, threatening TSL fish stocks. Flow alterations caused by dams and climate change may exacerbate the problem. Therefore, to realize the fisheries reform objectives, it is imperative to strengthen the fisheries’ governance and management system, including effective law enforcement, institutional strengthening, improved planning, cooperation, and coordination as well as clearly defined roles and responsibilities among concerned stakeholders at all levels.
    Type of Medium: Online Resource
    ISSN: 2073-4441
    URL: Article
    DOI: 10.3390/w12112974
    Language: English
    Publisher: MDPI AG
    Publication Date: 2020
    detail.hit.zdb_id: 2521238-2
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  • 10
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    Online Resource
    The Impacts of Hydropower Dams in the Mekong River Basin: A Review
    MDPI AG ; 2021
    In:  Water Vol. 13, No. 3 ( 2021-01-22), p. 265-
    Details
    In: Water, MDPI AG, Vol. 13, No. 3 ( 2021-01-22), p. 265-
    Abstract: The Mekong River, well known for its aquatic biodiversity, is important to the social, physical, and economic health of millions living in China, Myanmar, Laos, Thailand, Cambodia, and Vietnam. This paper explores the social and environmental impacts of several Mekong basin hydropower dams and groupings of dams and the geographies of their impacts. Specifically, we examined the 3S (Sesan, Sekong Srepok) river system in northeastern Cambodia, the Central Highlands of Vietnam, and southern Laos; the Khone Falls area in southern Laos; the lower Mun River Basin in northeastern Thailand; and the upper Mekong River in Yunnan Province, China, northeastern Myanmar, northern Laos, and northern Thailand. Evidence shows that these dams and groupings of dams are affecting fish migrations, river hydrology, and sediment transfers. Such changes are negatively impacting riparian communities up to 1000 km away. Because many communities depend on the river and its resources for their food and livelihood, changes to the river have impacted, and will continue to negatively impact, food and economic security. While social and environmental impact assessments have been carried out for these projects, greater consideration of the scale and cumulative impacts of dams is necessary.
    Type of Medium: Online Resource
    ISSN: 2073-4441
    URL: Article
    DOI: 10.3390/w13030265
    Language: English
    Publisher: MDPI AG
    Publication Date: 2021
    detail.hit.zdb_id: 2521238-2
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