Dam-induced difference of invasive plant species distribution along the riparian habitats

Wang, Yanfeng; Liu, Ying; Ma, Maohua; Ding, Zhizhong; Wu, Shengjun; Jia, Wenbao; Qiao, Chunming; Yi, Xuemei; Zhang, Jing; Li, Xiaohong; Luo, Gaohang; Huang, Jinxia

doi:10.1016/j.scitotenv.2021.152103

Cited by 16 publications

(10 citation statements)

References 49 publications

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“…Because the plants in our study area have a consistent growing season and are subject to similar inundation disturbances, under these conditions we can use data from two adjacent years for supplementary investigations (Moore et al, 2011;Zheng et al, 2021b). All plant communities from the tail to the dam area were classified according to the differences in water level and assigned to four elevation intervals at 170-175 (zone I), 165-170 (zone II), 160-165 (zone III) and 145-160 m (zone IV), representing 68, 112, 152, and 204 days of inundation continuity, respectively (Table S1; Wang et al, 2021). Within each elevation interval, we defined a transect (100 m long) parallel to the river and set up three 2 × 2 m quadrats at an interval of 50 meters (Zheng et al, 2021b).…”

Section: Study Area and Vegetation Surveyingmentioning

confidence: 99%

“…In addition, differences in non-native species invasions may lead to a further reduced proportion of spatially shared species riparian zones (Brice et al, 2017), resulting in increased species turnover. Studies have reported that exotic plants in the TGRR are rapidly increasing and significantly altering the plant community species composition (Wang et al, 2021;Zhang and Xie, 2021;Hu et al, 2022). Therefore, these factors probably contribute to the high rate of plant species turnover in the TGRR (Coelho et al, 2018).…”

Section: Patterns Of Multifaceted Plant Beta Diversity In Reservoir R...mentioning

confidence: 99%

“…The frequent fluctuations in water flow, especially the shift between inundation and drainage upstream of dams, impose physiological and physical constraints on riparian vegetation (Bejarano et al, 2018), leading to losses in plant species diversity (Zheng et al, 2021b). Furthermore, as plants' tolerance to this shift is substantially varied, their distribution and dispersion responses to flooding gradients differ (Wang et al, 2021;Ding et al, 2022). However, comprehensive views on how dam-induced water level fluctuations affect riparian plant diversity are still scarce.…”

Section: Introductionmentioning

confidence: 99%

“…The elevation in the reservoir riparian zone is often treated as a replacement factor for inundation filters (Janssen et al, 2019;Zhu et al, 2020), as it captures the impact of inundation time on plant diversity patterns (Wang et al, 2021;Ding et al, 2022). Recent investigations showed that plant species diversity peaked at moderate inundation gradients, which can be explained by the moderate disturbance hypothesis (Chen et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

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Distinguishing the mechanisms driving multifaceted plant diversity in subtropical reservoir riparian zones

Zheng

Arif²,

He³

et al. 2023

Front. Plant Sci.

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Understanding the multifaceted plant diversity and its maintenance mechanisms is crucial for biodiversity conservation. Dam-induced water level fluctuations dramatically alter various aspects of riparian diversity, such as taxonomic (TD), phylogenetic (PD), or functional (FD) diversity. However, few studies simultaneously evaluated plant TD, FD, and PD, especially in the subtropical reservoir riparian zone. Here we sampled plant diversity and environmental drivers along inundation gradients of the Three Gorges Reservoir Region in China. We integrated multifaceted plant diversity to assess how distinct ecological processes affect the plant community assembly and how they respond to inundation gradients, spatial variability, climate, and soils in dam-regulated riparian zones. We found that alpha TD, PD, and FD diversity exhibited decreasing trends with increasing inundation gradients and significant positive correlations with soil organic matter. The number of clustering plant communities increases along the inundation gradients. Beta TD and PD diversity were mainly dominated by species turnover with fewer contributions from nestedness, while beta FD diversity was mainly dominated by nestedness with fewer contributions from species turnover. The explainable rates of different dimensions of beta diversity, turnover, and nestedness ranged from 11% to 61%, with spatial factors explaining the highest beta diversity in different dimensions, followed by inundation gradients, soil properties, and climate variables. Our results suggest dispersal limitations are more important for species turnover in dam-regulated riparian zones at regional scales, while inundation gradients and soil fertility are more critical in shaping plant community assemblages at the local scale. This study emphasizes that environmental and spatial gradients are critical for understanding the assembly mechanisms driving multifaceted plant communities at local and regional scales and reinforces the importance of protecting seed sources and dispersal pathways and maintaining river connectivity when implementing restoration projects.

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Section: Study Area and Vegetation Surveyingmentioning

confidence: 99%

Section: Patterns Of Multifaceted Plant Beta Diversity In Reservoir R...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Distinguishing the mechanisms driving multifaceted plant diversity in subtropical reservoir riparian zones

Zheng

Arif²,

He³

et al. 2023

Front. Plant Sci.

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“…Meanwhile, the nutrients released from soils and plants in the WLFZ would continue to dissolve into the water, and the excessive nutrients in the water may result in eutrophication, threatening the health of aquatic ecology in the reservoir (Wang et al 2022). The construction of reservoirs is still the preferred solution to alleviate the water shortage in many countries and regions, so it is necessary to clarify the impact of water-level changes in the ecological environment of the subsidence zone (Yang et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Different tolerance of three typical riparian plants (Cynodon dactylon, Alternanthera philoxeroides, and Acorus calamus) to different depths of waterlogging caused variations in soil nutrient release and microbial diversity

Wang¹,

Wang³

et al. 2022

Water Quality Research Journal

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Water-level changes in the water-level fluctuating zone (WLFZ) promoted soil and plants to release nutrients into the water, threatening the water health in the reservoir. Plant restoration in the WLFZ is also an important way to reduce the nutrient release in order to select plants that can effectively reduce the release of soil nutrients under changing water levels. This study conducted a flooding experiment to reveal the difference in the change in soil physico-chemical properties and microbial communities planted with various plants under different water-level conditions. The flooding experiment began at the end of September 2020 and was planted with three dominant plants common to reservoirs, namely Cynodon dactylon, Alternanthera philoxeroides, and Acorus calamus. Our study found the three common dominant plants along the reservoir, and C. dactylon had a good adsorption capacity for nitrogen and phosphorus when it was flooded with shallow water, decreasing soil nutrients during the drying period. After a wetting–drying cycle, there was an obvious and significant (p < 0.05) divergence among soil microbial community structures between N0 and D1, D2, and D3, respectively. This study could provide sufficient reference information for plant selection and the assessment of nutrient release of WLFZ in restoration work.

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Invasive Alien Species Problem in the Reservoir

Sultan¹,

Pei²

2023

Reservoir Ecotoxicology

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Dam-induced difference of invasive plant species distribution along the riparian habitats

Cited by 16 publications

References 49 publications

Distinguishing the mechanisms driving multifaceted plant diversity in subtropical reservoir riparian zones

Distinguishing the mechanisms driving multifaceted plant diversity in subtropical reservoir riparian zones

Different tolerance of three typical riparian plants (Cynodon dactylon, Alternanthera philoxeroides, and Acorus calamus) to different depths of waterlogging caused variations in soil nutrient release and microbial diversity

Invasive Alien Species Problem in the Reservoir

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