Will a heavy sediment load affect responses of phytoplankton functional groups to aquatic environmental changes in different water body types?

Ding, Yitong; Pan, Baozhu; Zhao, Xiaohui; Zhao, Gengnan; Han, Xu; Li, Ming

doi:10.1016/j.scitotenv.2022.155863

Cited by 10 publications

(7 citation statements)

References 63 publications

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“…This finding was consistent with previous studies (Michalak 2016;Tian et al 2021) where nutrient levels were extremely critical for phytoplankton growth and community succession (Baines and Pace 1991;Xu et al 2010;Liu et al 2019). Although nitrogenous nutrients are often the main factors driving phytoplankton functional groups (Ding et al 2022b), most phytoplankton prioritize the utilization of NH 4 -N (Dortch 1990), with combinations of high nitrogen and low phosphorus beneficial at preventing cyanobacterial blooms (Wang et al 2020). The Yangtze River is a typical river with poor nutrients (Liu et al 2019), and nitrogen is critical for phytoplankton growth when it is in an oligotrophic condition (Jiang and Nakano 2022).…”

Section: Driving Factors Of Phytoplankton Communitiessupporting

confidence: 93%

“…Thus, it is plausible that phytoplankton variation in large rivers may be largely driven by interregional differences in climate (Rusanov et al 2022). Ding et al (2022b) found significant effects of precipitation and air temperature on phytoplankton diversity in spring and autumn in the Yellow River, China. Greater air temperatures also can lead to significant increases in river phytoplankton, especially cyanobacteria (Haakonsson et al 2017;Bao et al 2022).…”

Section: Driving Factors Of Phytoplankton Communitiesmentioning

confidence: 99%

“…Yang et al (2019) also reported that mixing regime, water temperature, and light availability were the driving factors controlling phytoplankton community dynamics in an estuarine reservoir of the Yangtze River. Since discharge, turbidity, and suspended solids are the main environmental factors affecting river phytoplankton, they are able to perform their functions by regulating water quantity and underwater light (Salmaso and Braioni 2008;Jia et al 2020;Tian et al 2021;Ding et al 2022b). As a large river with high water volume and high sand content, the species selectivity in turbid habitats of the Yangtze River may favor diatoms, especially those with high surface/ volume ratios and low light acclimation (Reynolds 1994).…”

Section: Driving Factors Of Phytoplankton Communitiesmentioning

confidence: 99%

“…Studies on phytoplankton communities from a functional perspective can add more information to the mechanism of phytoplankton responses to environmental changes (Haque et al 2021), which have been applied in many aquatic ecosystems (Padisák et al 2006;Zhang et al 2007;Abonyi et al 2012;Kim et al 2020;Sun and Wang 2021). However, there is relatively less research on phytoplankton functional groups in large rivers (Wang et al 2021;Ding et al 2022b).…”

Section: Introductionmentioning

confidence: 99%

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Water quality and habitat drive phytoplankton taxonomic and functional group patterns in the Yangtze River

Gao,

Xiong,

et al. 2024

Ecol Process

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Background Although phytoplankton are important primary producers in food webs, they are relatively less studied in large rivers compared to other types of systems. To fill this research gap, we studied phytoplankton taxonomic and functional composition and their relationships with water quality, habitat, climate, and land use across 30 river sections in the middle and lower reaches of the Yangtze River during 2017–2018. Results Major observed phytoplankton groups were cyanobacteria, bacillariophyta, and chlorophyta. Phytoplankton total abundance, total biomass, and species richness significantly decreased in the dry season compared to the wet season, with the species and functional composition differing significantly between seasons. Phytoplankton species differences between seasons were mainly contributed by Oscillatoria sp., Pseudanabaena sp., and Melosira granulata. The dfferences in phytoplankton functional groups between seasons were mainly contributed by P (including Closterium sp., Melosira sp.), Lo (including Merismopedia sp., Peridinium sp., Ceratium sp., and Gymnodinium sp.), and J (including Pediastrum sp., Tetraedron sp., Crucigenia sp., Scenedesmus sp., and Coelastrum sp.). The variance partitioning showed that water quality (NO3-N, total suspended solids, turbidity) and habitat (water flow, river bank and river channel conditions) were critical factors in shaping phytoplankton patterns, followed by climate and land use. Conclusions Results indicated that there was significant seasonal variation of phytoplankton in the Yangtze River, with water quality and habitat primarily driving phytoplankton patterns. Our study contributes to the understanding of natural and anthropogenic factors that drive seasonal successional processes of phytoplankton in the Yangtze River. These findings have important implications for environmental management as well as towards the ecological restoration of large rivers.

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Section: Driving Factors Of Phytoplankton Communitiessupporting

confidence: 93%

Section: Driving Factors Of Phytoplankton Communitiesmentioning

confidence: 99%

Section: Driving Factors Of Phytoplankton Communitiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Water quality and habitat drive phytoplankton taxonomic and functional group patterns in the Yangtze River

Gao,

Xiong,

et al. 2024

Ecol Process

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“…All components of the water ecosystem function are primarily affected by phytoplankton and zooplankton [19][20][21]. Phytoplankton are the main source of energy driving large aquatic ecosystems such as mussels and clams [22,23], and they also respond quickly to environmental change. The downstream decline in phytoplankton is attributed to low water flow, which also leads to impaired water quality [24].…”

Section: Introductionmentioning

confidence: 99%

Determining Critical Thresholds of Environmental Flow Restoration Based on Planktonic Index of Biotic Integrity (P−IBI): A Case Study in the Typical Tributaries of Poyang Lake

Wang

Huang

Zhu

et al. 2022

IJERPH

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Hydropower construction and climate change have aggravated river hydrological changes, which have reduced the water flow regime in the Ruhe River Basin. The reduced flow of the river seriously affected the water supply of nearby residents and the operation of the river ecosystem. Therefore, in order to alleviate the contradiction between water use for hydropower facilities and environmental water use, the urgent need is to explore the ecological flow-threshold of rivers. This study took the Fuhe River Basin as the research object, and summarized the monitoring data of eight hydrological stations from recent decades. Based on this, we explored the response law of P−IBI and flow, a tool to quickly measure the health of the ecosystem. Through the response relationship between alterations in environmental factors of the river and phytoplankton index of biotic integrity (P−IBI), it was determined that environmental flow was the dominant influencing factor of P−IBI. According to P−IBI, the threshold of environmental discharge in the Fuhe River was limited to 273~826.8 m3/s. This study established a regulatory framework for the river flow of large rivers by constructing P−IBI and determining the critical thresholds of environmental flow by constraining the constitution. These results provide a theoretical basis for better planning and improvement of river ecosystem restoration and river utilization.

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Ecological and functional differences of abundant and rare sub-communities in wastewater treatment plants across China

Yang,

Liu,

Lin

et al. 2024

Environmental Research

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Will a heavy sediment load affect responses of phytoplankton functional groups to aquatic environmental changes in different water body types?

Cited by 10 publications

References 63 publications

Water quality and habitat drive phytoplankton taxonomic and functional group patterns in the Yangtze River

Water quality and habitat drive phytoplankton taxonomic and functional group patterns in the Yangtze River

Determining Critical Thresholds of Environmental Flow Restoration Based on Planktonic Index of Biotic Integrity (P−IBI): A Case Study in the Typical Tributaries of Poyang Lake

Ecological and functional differences of abundant and rare sub-communities in wastewater treatment plants across China

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