Damming effects on river sulfur cycle in karst area: A case study of the Wujiang cascade reservoirs

Yang, Mengdi; Li, Xiaodong; Huang, Jun; Ding, Shiyuan; Cui, Gaoyang; Liu, Cong‐Qiang; Li, Qinkai; Lv, Hong; Yi, Yaolin

doi:10.1016/j.agee.2020.106857

Cited by 26 publications

(3 citation statements)

References 72 publications

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“…According to the comparison shown in Figure 2 , the variation in anion concentration was more severely influenced by the environment ( Yang et al, 2020 ; Yuan Y. et al, 2020 ; Xu et al, 2022 ). Cl – concentration was high in both the coastal and arid zones due to the presence of seawater intrusion in the coastal zone and evaporation in the arid zone ( Idowu et al, 2022 ; Yin et al, 2022 ).…”

Section: Discussionmentioning

confidence: 99%

Microbial community structural response to variations in physicochemical features of different aquifers

Dai

Zhang²,

Fang³

et al. 2023

Front. Microbiol.

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IntroductionThe community structure of groundwater microorganisms has a significant impact on groundwater quality. However, the relationships between the microbial communities and environmental variables in groundwater of different recharge and disturbance types are not fully understood.MethodsIn this study, measurements of groundwater physicochemical parameters and 16S rDNA high-throughput sequencing technology were used to assess the interactions between hydrogeochemical conditions and microbial diversity in Longkou coastal aquifer (LK), Cele arid zone aquifer (CL), and Wuhan riverside hyporheic zone aquifer (WH). Redundancy analysis indicated that the primary chemical parameters affecting the microbial community composition were NO3–, Cl–, and HCO3–.ResultsThe species and quantity of microorganisms in the river–groundwater interaction area were considerably higher than those in areas with high salinity [Shannon: WH (6.28) > LK (4.11) > CL (3.96); Chao1: WH (4,868) > CL (1510) > LK (1,222)]. Molecular ecological network analysis demonstrated that the change in microbial interactions caused by evaporation was less than that caused by seawater invasion under high-salinity conditions [(nodes, links): LK (71,192) > CL (51,198)], whereas the scale and nodes of the microbial network were greatly expanded under low-salinity conditions [(nodes, links): WH (279,694)]. Microbial community analysis revealed that distinct differences existed in the classification levels of the different dominant microorganism species in the three aquifers.DiscussionEnvironmental physical and chemical conditions selected the dominant species according to microbial functions. Gallionellaceae, which is associated with iron oxidation, dominated in the arid zones, while Rhodocyclaceae, which is related to denitrification, led in the coastal zones, and Desulfurivibrio, which is related to sulfur conversion, prevailed in the hyporheic zones. Therefore, dominant local bacterial communities can be used as indicators of local environmental conditions.

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Section: Discussionmentioning

confidence: 99%

Microbial community structural response to variations in physicochemical features of different aquifers

Dai

Zhang²,

Fang³

et al. 2023

Front. Microbiol.

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“…Human activities lead to the continuous inputs of nutrients, especially nitrogen (N) and phosphorus (P), into inland waters, which aggravates the eutrophication (Peñuelas et al, 2013 ; Yang et al, 2020 ). Cyanobacteria are photosynthetic prokaryotes, which are quite different from eukaryotic algae.…”

Section: Introductionmentioning

confidence: 99%

Emission of cyanobacterial volatile organic compounds and their roles in blooms

Zuo

2023

Front. Microbiol.

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Cyanobacteria are photosynthetic prokaryotes and one of dominant species in eutrophicated waters, which easily burst blooms in summer with high irradiance and temperature conditions. In response to high irradiance, high temperature, and nutrient conditions, cyanobacteria release abundant of volatile organic compounds (VOCs) by up-regulating related gene expression and oxidatively degrading β-carotene. These VOCs not only increase offensive odor in waters, but also transfer allelopathic signals to algae and aquatic plants, resulting in cyanobacteria dominating eutrophicated waters. Among these VOCs, β-cyclocitral, α-ionone, β-ionone, limonene, longifolene, and eucalyptol have been identified as the main allelopathic agents, which even directly kill algae by inducing programmed cell death (PCD). The VOCs released from cyanobacteria, especially the ruptured cells, exhibit repelling effects on the herbivores, which is beneficial to survival of the population. Cyanobacterial VOCs might transfer aggregating information among homogeneous species, so the acceptors initiate aggregation to resist the coming stresses. It can be speculated that the adverse conditions can promote VOC emission from cyanobacteria, which play important roles in cyanobacteria dominating eutrophicated waters and even bursting blooms.

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“…Huang et al [ 5 ] used IHA to assess the hydrological changes and aquatic ecology of the Yangtze River in the past 58 years. Yang et al [ 6 ] used IHA to evaluate the impact of hydrological changes in the middle and lower reaches of the Han River on river fish. Gao et al [ 7 ] evaluated the mechanism change of Yangtze River flow with IHA.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Runoff Variation Characteristics and Influencing Factors in the Wujiang River Basin in the Past 30 Years

Guo

Wang

2021

IJERPH

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Changes in climate and the underlying surface are the main factors affecting runoff. Quantitative assessment of runoff characteristics, and determination of the climate and underlying surface contribution to changes in runoff are critical to water resources management and protection. Based on the runoff data from the Wulong Hydrological Station, combined with the Mann-Kendall test, Indicators of Hydrologic Alteration (IHA), Budyko hypothesis, and changes in climate and the underlying surface, this study comprehensively analyzed the runoff in the Wujiang River Basin (WRB). The results showed that: (1) The annual runoff of Wujiang River showed a downward trend, and an abrupt change occurred in 2005. (2) The overall hydrological change in WRB is 46%, reaching a moderate change. (3) The contribution rates of precipitation (P), potential evaporation (ET0), and underlying surface to runoff changes are 61.5%, 11.4%, and 26.9%, respectively. (4) After 2005, the WRB has become more arid, human activities have become more active, vegetation coverage has increased, and the built-up land has increased significantly.

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Damming effects on river sulfur cycle in karst area: A case study of the Wujiang cascade reservoirs

Cited by 26 publications

References 72 publications

Microbial community structural response to variations in physicochemical features of different aquifers

Microbial community structural response to variations in physicochemical features of different aquifers

Emission of cyanobacterial volatile organic compounds and their roles in blooms

Analysis of Runoff Variation Characteristics and Influencing Factors in the Wujiang River Basin in the Past 30 Years

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