Environmental Filtering Drives Plant Community Assembly Processes in the Riparian Marsh of Downstream Yellow River, China

Yi, Shijie; Wu, Pan; Bai, Fen; Zhou, Dayou; Peng, Xiqiang; Zhang, Wenxin; Guo, Weihua

doi:10.1007/s13157-019-01182-7

Cited by 13 publications

(7 citation statements)

References 56 publications

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“…Under the influence of hydrological changes in the TGRR, most plant communities had negative values of standardized PD and FD diversity (Figure 4), suggesting that environmental filtering dominates plant assemblages in dam-regulated riparian zones (Webb et al, 2002). A powerful explanation is that frequent shifts in reservoir hydrology inhibit the recruitment process of riparian plant communities (Yi et al, 2019). These useful findings are consistent with previously reported conclusions that plant species assemblage along a hydrologic gradient is shaped by environmental filtering (Fraaije et al, 2015;Ran et al, 2022).…”

Section: Discussionsupporting

confidence: 88%

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: Discussionsupporting

confidence: 88%

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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“…Species that are adapted to the contrasting conditions at either end of the elevation gradient lead to changes in community composition. The combined patterns of plant diversity and composition indicate that environmental filters likely drive plant community assembly along the elevation gradient and that the nature of these filters shift with altitude, similar to other montane systems (Chun & Lee, 2018;Fallon & Cavender-Bares, 2018;Scherrer et al, 2019;Yi et al, 2020;Zhang, Huang, Wang, Liu, & Du, 2016) (Chun & Lee, 2018;Fallon & Cavender-Bares, 2018;Scherrer et al, 2019;Yi et al, 2020;W. Zhang et al, 2016).…”

Section: Discussionmentioning

confidence: 84%

Drivers of plant diversity, community composition, functional traits and soil processes along an alpine gradient in the central Chilean Andes

Schroeder

Robles

Jara‐Arancio

et al. 2023

Preprint

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High alpine regions are threatened but understudied ecosystems that harbor diverse endemic species, making them an important biome in which to test the role of environmental factors in driving functional trait-mediated community assembly processes. In a high mountain system in the central Chilean Andes, we tested hypotheses about the drivers of plant community diversity, functional composition and soil processes along an elevation gradient. We surveyed vegetation and spectroscopic reflectance (400-2400 nm) to quantify taxonomic, phylogenetic, functional, and spectral diversity at five sites from 2400 m to 3500 m elevation. We characterized soil attributes and processes by measuring water content, carbon and nitrogen, and net nitrogen mineralization rates. At high elevation, colder temperatures led to a reduction in available soil nitrogen, while at warmer, lower elevations, soil moisture was lower. Metrics of taxonomic, functional, and spectral alpha diversity peaked at mid-elevations, while phylogenetic species richness was highest at low elevation. Leaf nitrogen followed global patterns of increasing leaf nitrogen with colder temperatures, a pattern consistent at the community level as well as within individual species. The increase in leaf nitrogen, coupled with shifts in taxonomic and functional diversity associated with turnover in lineages, indicate that the ability to acquire and retain nitrogen in colder temperatures may be important in plant community assembly in this range. Such environmental filters have important implications for forecasting shifts in alpine plant communities under a warming climate.

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“…It is common knowledge that environmental filtering, as a critical determinant of species distribution patterns and abundance, inevitably leads to a reduction in trait value range and an increase in niche overlap (Yi et al, 2019). Archaeal taxa between crops in different habitats demonstrate diverse responses to environmental changes (Jiao et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Rhizosphere bacterial communities of three minor grain crops exhibit distinct environmental adaptations and assembly processes

Tian¹,

Zhang²,

Chen³

et al. 2022

European J Soil Science

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Deciphering responses of bacterial communities to environmental change, and understanding how communities assemble in response to environmental change, are important subjects. The assembly processes governing the rhizosphere bacterial communities of minor grain crops are rarely explored based on regional scales, especially in terms of the environmental adaptation. Here, we investigated the environmental thresholds and phylogenetic signals for ecological preferences of rhizosphere bacterial communities of three minor grain crop taxa across complex environmental gradients to reflect their environmental adaptation. Additionally, we reported environmental factors affecting their community assembly processes based on a large‐scale soil survey in agricultural fields across northern China using high‐throughput sequencing. The results demonstrated a narrower range of environmental thresholds and weaker phylogenetic signals for the ecological traits of rhizosphere bacteria in proso millet than in foxtail millet and sorghum fields. The proso millet rhizosphere community was the most phylogenetically clustered. Null model analysis indicated that homogeneous selection belonging to deterministic processes governed the sorghum rhizosphere community, whereas dispersal limitation belonging to stochastic processes was the critical assembly process in the foxtail millet and proso millet. Mean annual temperature was the decisive factor for adjusting the balance between stochasticity and determinism of the foxtail millet, proso millet and sorghum rhizosphere communities. A higher temperature resulted in stochasticity in the proso millet and sorghum communities. For the foxtail millet community, the deterministic assembly increased with an increase in temperature. These results contribute to the understanding of rhizosphere‐associated bacterial community assembly processes in agro‐ecosystems on a large scale. Highlights Proso millet rhizosphere bacterial taxa exhibited weaker environmental adaptation than foxtail millet and sorghum taxa. Determinism governed the sorghum rhizosphere community, whereas stochasticity was the critical assembly process in the foxtail and proso millet. Mean annual temperature mediated balance between stochastic and deterministic processes.

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Environmental Filtering Drives Plant Community Assembly Processes in the Riparian Marsh of Downstream Yellow River, China

Cited by 13 publications

References 56 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

Drivers of plant diversity, community composition, functional traits and soil processes along an alpine gradient in the central Chilean Andes

Rhizosphere bacterial communities of three minor grain crops exhibit distinct environmental adaptations and assembly processes

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