Effects of upstream and downstream dam operation on the spawning habitat suitability of Coreius guichenoti in the middle reach of the Jinsha River

Zhang, Peng; Yang, Zhi Min; Cai, Ling; Qiao, Yunfeng; Chen, Xiaojuan; Chang, Jianbo

doi:10.1016/j.ecoleng.2018.06.002

Cited by 34 publications

(10 citation statements)

References 20 publications

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“…CE-QUAL-W2 simulated the water temperature stratification of reservoirs under different inflows and outflows. The simulation results of velocity, water depth, and water temperature were used to construct a fuzzy model [31,40] to comprehensively analyze the effects of the three factors on C. idella spawning. The simulation results of the fuzzy logic-based habitat suitability model were analyzed and evaluated by WUA and HHS, and the best flow management scenario in the study area was finally obtained.…”

Section: Model Frameworkmentioning

confidence: 99%

“…The fuzzy model considers the uncertainties of habitat hydraulics variables and enables expressing nonlinear relationships between habitat hydraulic variables in a transparent manner [30]. It uses the three physical characteristics of rivers that allow for the determination of the quality of habitats for fish species, i.e., velocity, water depth, and water temperature [31]. Each parameter is classified by an overlapping membership function described by a fuzzy language.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of an Ecological Flow Regime during the Ctenopharyngodon Idella Spawning Period Based on Reservoir Operations

Qin

Pei

et al. 2019

Water

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The study of fish habitats is important for us to better understand the impact of reservoir construction on river ecosystems. Many habitat models have been developed in the past few decades. In this study, a fuzzy logic-based habitat model, which couples fuzzy inference system, two-dimensional laterally averaged hydrodynamic model, and two-dimensional shallow water hydrodynamic model, is proposed to identify the baseline condition of suitable habitat for fish spawning activities. The proposed model considers the reservoir and the downstream river channel, and explores the comprehensive effects of water temperature, velocity, and water depth on habitat suitability. A real-world case that considers the Ctenopharyngodon idella in the Xuanwei Reservoir of Qingshui River is studied to investigate the effect of in- and outflow of reservoir on fish habitat and the best integrative management measure of the model. There were 64 simulations with different reservoir in- and outflows employed to calculate the weighted usable area and hydraulic habitat suitability. The experimental results show that the ecological flow for Ctenopharyngodon idella spawning can satisfy the basic demand when the reservoir inflow is greater than 60 m3/s and the reservoir outflow is greater than 100 m3/s. The habitat ecological suitability is the best when the reservoir outflow is 120 m3/s. A more reasonable and reliable ecological flow range can be obtained based on the habitat model in this paper, which provides the best scenario for water resources planning and management in the Qingshui River Basin.

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Section: Model Frameworkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of an Ecological Flow Regime during the Ctenopharyngodon Idella Spawning Period Based on Reservoir Operations

Qin

Pei

et al. 2019

Water

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“…Li et al () assessed the sediment load responses to climate variation and cascade reservoirs in Jinsha River based on the MK trend and abrupt test and DDC. Most studies in Jinsha River have focused on the configuration to optimize streamflow stations (Wang et al, ; Wang, Zhou, Lu, & Liu, ), the hydropower operation impacts on the habitat of imperiled fish (Zhang et al, ; Zhang et al, ), and the human and natural controls on erosion (Schmidta et al, ). However, the relationships between water‐sediment discharge and the associated responses to climate change and human activities were seldom discussed.…”

Section: Introductionmentioning

confidence: 99%

Climatic and anthropogenic impacts on water and sediment generation in the middle reach of the Jinsha River Basin

Zhang

Cai

Yang

et al. 2020

River Research & Apps

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Response of water and sediment generation to climate change and anthropogenic activities is becoming a hot topic in the middle reach of the Jinsha River Basin. In this research, coefficients of variation and concentration degree (i.e., Cv and Cd) and double mass curve (DDC) were adopted to examine the changes in water and sediment discharge and their relationships with precipitation. The contribution rates of climatic and anthropogenic factors to water and sediment discharge were assessed through comparisons between the measured and predicted values in the baseline and postbaseline periods in the basin. The main results were: (a) the water and sediment discharges of the basin showed a decreasing trend from 2006 to 2014, with peak points of Cv and Cd of sediment discharge of the basin in 2009 and 2010, respectively; (b) the precipitation had a major influence on water discharge variations, and the peak point of the DDC of the cumulative precipitation and sediment discharge was consistent with the cumulative water and sediment discharge; and (c) under annual and flooding season scales, the contribution rates of anthropogenic factors to water discharge were 63.060% and 70.457%, respectively. The contribution rates of anthropogenic factors on sediment discharge were 84.790% and 85.541%, respectively. The impacts of anthropogenic factors on water and sediment discharge were more significant than the impacts of precipitation, in which the construction and operation of cascade hydropower stations (CHS) were believed to play a crucial role.

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“…Presently, there are expansion plans for the development of hydropower impoundments/dams within eastern and southern Africa (McDonald et al 2009;Conway et al 2017). However, the construction of dams has caused river ecosystems to be radically transformed via alterations to water quality, hydrology and habitat characteristics (Kondolf 1997;Lessard and Hayes 2003;Malherbe et al 2016;Ngor et al 2018;Zhang et al 2018). The dependence of the various biological aspects of ichthyofauna communities on the aforementioned ecosystem characteristics denote that they are particularly vulnerable to anthropogenic alterations (Skelton et al 1995;Peacock et al 2016;Akbaripasand and Closs 2018;Baggio et al 2018;Ngor et al 2018;Ramesh et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Spatial shifts and habitat partitioning of ichthyofauna within the middle–lower region of the Pungwe Basin, Mozambique

Desai

Husted

Fry

et al. 2019

Journal of Freshwater Ecology

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Freshwater resources are under stress because of anthropogenic activities and the demand for water increasing on a global scale, including hydropower. There are presently plans to expand the use of hydropower within eastern and southern Africa. A key river system identified as a potential source of energy is the Pungwe River, with the proposed Pavua Dam located within the middle reaches of the system in Mozambique. However, impoundments have been recorded to negatively influence ichthyofauna communities via alterations to water quality and discharge. Furthermore, information on the structure of the ichthyofauna community, community spatial shifts and fine-scale habitat preferences for the region are lacking. Accordingly, the research sought to address this issue, to provide baseline data as well as inform on management of the system. Ichthyofauna were collected utilising an array of passive and active techniques and species data modelled to fit spatial factors to ascertain spatial shifts. To ascertain fine-scale habitat preferences, fourth-corner modelling was undertaken to link mouth position and body shape traits to substrate composition and cover features. Spatial heterogeneity in environmental characteristics caused by the intrusion of the African Rift Valley had driven significant spatial shifts in the ichthyofauna community, with distinct groups of species occurring within the sample sites. The findings of the study indicated that the ichthyofauna community within the Muazi River were significantly different to the Pungwe River and the community will be lost from the region because of the dam footprint. Furthermore, habitat preferences were influenced by mouth position and body shape. Consequently, alteration to environmental characteristics and habitat features is likely to negatively influence the ichthyofauna community.

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Effects of upstream and downstream dam operation on the spawning habitat suitability of Coreius guichenoti in the middle reach of the Jinsha River

Cited by 34 publications

References 20 publications

Analysis of an Ecological Flow Regime during the Ctenopharyngodon Idella Spawning Period Based on Reservoir Operations

Analysis of an Ecological Flow Regime during the Ctenopharyngodon Idella Spawning Period Based on Reservoir Operations

Climatic and anthropogenic impacts on water and sediment generation in the middle reach of the Jinsha River Basin

Spatial shifts and habitat partitioning of ichthyofauna within the middle–lower region of the Pungwe Basin, Mozambique

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