Influence of Different Types of Small Hydropower Stations on Macroinvertebrate Communities in the Changjiang River Basin, China

Zhao, Wenlong; Guo, Weijie; Zhao, Liangyuan; Li, Qingyun; Xiao-huan, Cao; Tang, Xianqiang

doi:10.3390/w11091892

Cited by 15 publications

(4 citation statements)

References 21 publications

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“…As of 2015, over 47,000 small hydropower plants under 50,000 kW have been built in China. Most hydropower plants are located in the mountainous regions of southern China, where there are large reserves of water resources (rivers) [18]. According to [1], the average capacity of one small hydropower station was 143 kW.…”

Section: Fig1mentioning

confidence: 99%

The Use of Alternative Energy Sources for the Operation of Engineering Systems of Detached Consumers

Usenkov¹

2023

Eurasian phys. tech. j.

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The operation of many of the engineering systems that are necessary for the functioning of a detached residential building depends on specific sources of alternative energy, the use of which can significantly reduce the consumption of traditional fossil energy resources. A review of scientific works devoted to the operation of engineering systems using alternative energy sources is given. Several schemes of power equipment have been developed to obtain thermal and electrical energy supplied to isolated consumers. When designing a fixed technical solar system using solar radiation for operation, the locations of all power equipment, the solar receiver pitch on the roof of the building and the values of its optimal angle of inclination to the horizon were determined. A scheme of a small transportable hydroelectric power plant has been developed, which generates electric energy using the pressure created by the flow of water. A thermal refrigeration unit is designed, which uses the heat of the air removed from the animal stall to heat the heated medium.

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Section: Fig1mentioning

confidence: 99%

The Use of Alternative Energy Sources for the Operation of Engineering Systems of Detached Consumers

Usenkov¹

2023

Eurasian phys. tech. j.

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“…The topographic variation is critical for maintaining species variety on floodplains, where a slight change in landform height affects seasonal flooding and plant distribution (Sparks, 1992). Flow persistence and substrate composition shape the community response to intermittent flows (Stubbington et al, 2009;Zhao et al, 2019). With time, flow management measures diminish river biota and in-channel habitat diversity.…”

Section: Response Of River Ecosystem To Fragmentationmentioning

confidence: 99%

Navigating a broken river: Understanding the ecological consequences of fragmentation on benthic life

Sofi,

Bhat,

Muslim

2023

Ecohydrology

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Habitat fragmentation is emerging as a leading cause of biodiversity decline in riverine ecosystems. Several natural and human factors contribute to the fragmentation of rivers. River fragmentation is a growing problem that is widely spread and poses a significant challenge to the conservation of freshwater biodiversity, but its impact is not fully documented and acknowledged. Fragmentation impedes the movement of aquatic organisms and alters natural flow regimes, disrupting habitats and trophic supplies for aquatic biodiversity. It can also affect the adaptive ability of organisms to natural environmental changes, leading to a change in the structure and function of biotic communities. To understand the effects of fragmentation on river ecology, it is crucial to link its spatial and structural implications. This article examines the occurrence and frequency of fragmentation and its effects on the ecological community of benthic biota. This review aims to elucidate the overall effects of fragmentation on river ecology and recommends the possible measures to mitigate its impact. Urgent action is required to establish a comprehensive global network of free‐flowing river systems and revive previously exploited rivers in different regions to enhance the protection and sustainable utilization of river ecosystems.

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“…Moreover, the biomass levels decreased. It was reported that the hydrological period was the main influencing factor and that the impact of the SHPs was not significant [84]. In this work, invertebrate studies in SHP reservoirs (low dams with clearly identified SHP types) were reviewed and systematized, concluding that the impact of small hydropower plant reservoirs and low dams is not clearly expressed for invertebrates, although the impact on more sensitive species was emphasized.…”

Section: Physico-chemical Quality Element Indicators In Watermentioning

confidence: 99%

Assessment of the Impact of Small Hydropower Plants on the Ecological Status Indicators of Water Bodies: A Case Study in Lithuania

Česonienė

Dapkienė

Punys

2021

Water

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Hydropower plants produce renewable and sustainable energy but affect the river’s physico-chemical characteristics and change the abundance and composition of the aquatic organisms. The impact of large HPPs on the ecological conditions of surface water bodies have been extensively studied, but less attention has been paid to environmental impact studies of small hydropower plants (SHPs). The impact of hydropeaking on both the river flow regime and ecosystems has been well-studied for peaking mode plants, mainly medium to large-sized ones. However, for small hydroelectric power plants, and especially for those in lowland rivers, the available information on water quality, benthic macroinvertebrates communities and fish abundance, and biomass is not sufficient. Ten small hydropower plants were selected, and the ecological status of water bodies was assessed in different parts of Lithuania. The studies were performed at the riverbed upstream from the SHPs, where the hydrological regime has not changed, and downstream from the SHPs. It was found that the small hydropower plants do not affect the physico-chemical values of the water quality indicators. This study demonstrated that the total number of benthic macroinvertebrates taxa (TS) is influenced by the concentration of nitrogen and suspended solids, the water flow, the river area, and the current speed; the number of EPT (Ephemeroptera (mayflies), Plecoptera (stoneflies), and Trichoptera (caddisflies)) taxa is influenced by the concentration of nitrogen and suspended solids. The studied indicators do not have a significant impact on biomass. The SHPs affect the fish abundance and biomass. The Lithuanian fish index (LFI) is influenced by the average depth and area of the river. Some SHPs operating in lowland areas may yield somewhat significant hydrograph ramping but more detailed investigation is needed to support the significance of this impact on the biological indices.

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Influence of Different Types of Small Hydropower Stations on Macroinvertebrate Communities in the Changjiang River Basin, China

Cited by 15 publications

References 21 publications

The Use of Alternative Energy Sources for the Operation of Engineering Systems of Detached Consumers

The Use of Alternative Energy Sources for the Operation of Engineering Systems of Detached Consumers

Navigating a broken river: Understanding the ecological consequences of fragmentation on benthic life

Assessment of the Impact of Small Hydropower Plants on the Ecological Status Indicators of Water Bodies: A Case Study in Lithuania

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