Planktonic archaea reveal stronger dispersal limitation and more network connectivity than planktonic bacteria in the Jinsha River of southwestern China DOI

Ge Cui,

Juan Chen, Chao Wang

et al.

Freshwater Biology, Journal Year: 2023, Volume and Issue: 68(11), P. 1995 - 2010

Published: Aug. 26, 2023

Abstract Planktonic archaea and bacteria play important roles in biogeochemical cycling, but their biogeographical patterns underlying ecological processes remain poorly understood, particularly large‐scale rivers. We collected 43 water samples covering a 2279 km reach of the Jinsha River, one largest rivers southwest China, performed high‐throughput sequencing analysis on planktonic archaeal bacterial communities. Partial Mantel neutral model were used to assess factors influencing microbial distributions. The associations among different species geographical distribution linked through co‐occurrence networks, putative key taxa networks analysed. Shannon index both communities was highest midstream reach. Pielou's evenness did not vary three reaches, whereas those increased from upstream downstream. community compositions significantly differences greater than Both dispersal limitation environmental selection affected bacteria, most influential factor. Compared archaea, less by more selection. network demonstrated that, compared with all sites, larger graph density had higher connectivity complexity, lower proportion negative correlations. belonged Nitrososphaeraceae Candidatus_Nitrocosmicus community, Hydrogenophaga Sphingorhabdus community. Taken together, these findings that dispersal‐limited showed River. This study enhances our understanding microorganisms over freshwater systems.

Language: Английский

Impacts of China’s natural forest protection project on habitat distribution of key protected birds in the Qinghai-Tibet Plateau DOI Creative Commons
Changli Bu, Wendong Xie, Zheng Ma

et al.

Avian Research, Journal Year: 2025, Volume and Issue: unknown, P. 100244 - 100244

Published: March 1, 2025

Language: Английский

Citations

0
Elevational patterns of amphibian functional and phylogenetic structures in eastern Nepal Himalaya DOI Creative Commons
Tian Zhao, Janak Raj Khatiwada,

Chunlin Zhao

et al.

Diversity and Distributions, Journal Year: 2022, Volume and Issue: 28(12), P. 2475 - 2488

Published: June 24, 2022

Abstract Aim Exploring the mechanism underlying community assembly processes is considered as one of central topics for biogeography. As biodiversity hotspots, Nepal Himalaya has attracted increasing attention during past decade. However, main shaping amphibian assemblages in this area are still unclear. Here, we examined elevational patterns functional and phylogenetic structures to understand driving along an gradient eastern Himalaya. Location Eastern Methods Amphibian taxonomic, diversity were calculated, their responses elevations investigated based on linear regressions. The environmental determinants revealed incorporation generalized models hierarchical partitioning analyses. In addition, from low high was tested by calculating mean pairwise distance indices. Results had contrast elevations, which strongly determined variables such air temperature, number trees, leaf litter cover water pH. Interestingly, trends can be changed after controlling effects species richness. Moreover, determining process played a dominant role with elevations. Conclusions Our results Himalaya, associated change variables. We also highlighted assemblages. Overall, our help ecologists managers better formulate conservation. enriched fundamental knowledge general rules montane ecosystems.

Language: Английский

Citations

13
Biogeographic Patterns of Sulfur in the Vegetation of the Tibetan Plateau DOI
Wenzong Zhao, Chunwang Xiao, Mingxu Li

et al.

Journal of Geophysical Research Biogeosciences, Journal Year: 2023, Volume and Issue: 128(3)

Published: March 1, 2023

Abstract Sulfur (S) plays an important role in plant growth and development. However, due to climatic conditions limited data availability, the variation allocation of S are largely unknown at regional or global scales. In this study, we systematically evaluated distribution patterns storage vegetation on Tibetan Plateau for first time, based consistent field‐measured 2,040 communities. The mean contents leaves, branches, trunks, roots were 1.68, 0.40, 0.19, 1.45 g kg −1 , respectively; corresponding densities 0.40 × 10 −2 (9.57%), 1.18 (28.38%), 1.37 (32.90%) 1.21 t hm (29.15%), respectively. forests (5.59 ± 0.26 ) higher than that shrublands (4.54 0.51 ), grasslands (1.03 0.07 deserts (1.32 0.28 ). density was generally lower northwest southeast had divergent between different organs types. Furthermore, found leaves more strongly influenced by environmental factors particularly sensitive radiation atmospheric pressure. Moreover, total estimated be 337.32 4 t, with 114.32 (33.89%), 92.36 (27.38%), 128.77 (38.17%), 1.86 (0.55%) forests, shrublands, grasslands, deserts, Our study clarified ecosystems compiled 1 km sets, which could help determine key parameters cycle models future.

Language: Английский

Citations

6
Functional and phylogenetic analyses of tadpole community assembly in temperate montane streams DOI Creative Commons
Zijian Sun,

Shengqi Su,

Jianyi Feng

et al.

Ecological Indicators, Journal Year: 2022, Volume and Issue: 146, P. 109822 - 109822

Published: Dec. 19, 2022

Understanding the spatial patterns and maintenance of biodiversity is a central target in ecology biogeography, which provide important insights into community assembly processes. Mountain ecosystems informative systems for examining how distributed identifying mechanisms underlying those patterns. However, most existed studies only focused on plants, birds, microbes, while little attention has been paid amphibians, especially tadpoles. In present study, we explored elevational multiple facets tadpole diversity temperate montane streams Mount Emei, China. The taxonomic, functional, phylogenetic assemblages were quantified. Their investigated using first second-order polynomial regression analyses. microhabitat determinants these assessed by ordinary least squares models hierarchical partitioning tree tadpoles Eucliden distance traits between constructed. They subsequently used to calculate standardized effect size mean pairwise functional distances, speculate rules. Our results indicated that Faith's PD had hump-shaped responses elevation, relationships elevation observed taxonomic diversity, not significant. Interestingly, determined variables, such as water conductivity, river width, depth, substrate type. Mean also showed correlations with gradient. Tadpole structures more clustered low high streams, suggesting environmental filtering was main driver. At mid-elevations, overdispersal, indicating limiting similarity plays dominant role shaping assemblages.

Language: Английский

Citations

9
The joint effects of local, climatic, and spatial variables determine soil oribatid mite community assembly along a temperate forest elevational gradient DOI Creative Commons
Dandan Liu, Haitao Wu

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(7)

Published: July 1, 2024

Abstract Numerous factors influence mountain biodiversity variation across elevational gradients and recognizing the relative importance is vital for understanding species distribution mechanisms. We examined oribatid mites at nine elevations (from 600 to 2200 m a.s.l) four vegetation types from mixed coniferous broad‐leaved forests alpine tundra on Changbai Mountain. assessed contribution of environmental (climatic local factors) spatial processes (geographic or elevation distances) mite community assembly identified 59 38 families 51 genera. With increasing elevation, richness Shannon index declined significantly, whereas abundance followed a hump‐shaped trend. Soil TP, NH 4 + ‐N, MAT, MAP, were critical variables shaping communities based random forest analysis. Moreover, factors, significantly correlated Mantel partial tests. Local characteristics (3.9%), climatic (1.9%), filtering (8.8%) played crucial roles in determining bands (based partitioning analyses data). Within same types, had relatively little effects, with dominant drivers variation. Environmental filters together shape their varied type. These findings are conservation, restoration, management ecosystems context climate change, along prediction future vertical biotic gradient pattern evolution.

Language: Английский

Citations

1
Elevation and local habitat characteristics jointly determine soil oribatid mites (Acari: Oribatida) assemblages in the Changbai Mountains, China DOI
Dandan Liu, Haitao Wu,

Hongxian Yu

et al.

Plant and Soil, Journal Year: 2023, Volume and Issue: 487(1-2), P. 485 - 498

Published: Feb. 16, 2023

Language: Английский

Citations

3
Response of riparian plant community to landscape matrix differs by taxonomic and functional diversity: Implications for the planning of riparian landscapes regulated by dams DOI

Jinxia Huang,

Xiaohong Li, Songlin Zhang

et al.

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 907, P. 167768 - 167768

Published: Oct. 20, 2023

Language: Английский

Citations

2
Diversity and distribution of fish in the Qilian Mountain Basin DOI Creative Commons
Zhaosong Chen,

Lijing Luo,

Ziwang Wang

et al.

Biodiversity Data Journal, Journal Year: 2022, Volume and Issue: 10

Published: Aug. 12, 2022

The Qilian Mountain Basin, on the north-eastern edge of Qinghai-Tibet Plateau (QTP), supports a high diversity native and endemic fish. However, detailed species inventory distribution patterns concerning fish in whole Basin remain unknown, which hinders conservation biodiversity assessment ecological health. We compiled comprehensive richness database freshwater based field investigations exhaustive data collection from 50 rivers or lakes. Then, we elucidated pattern using clustering ordination analyses βdissim matrix with presence/absence data. A total 79 within eight orders, 17 families 42 genera were recorded. could be grouped into six systems, match Basins (i.e. Heihe River HHR; Qaidam QDM; Qinghai Lake QHL; Shule SLR; Shiyang SYR; Yellow YR), pattern. Additionally, spatial showed distance decay taxonomic similarity. Our results demonstrate that riverine connectivity resulting historical processes plays vital role shaping ichthyofauna High Central Asia. These findings will valuable for future systematic Basin.

Language: Английский

Citations

4
Regional and Local Habitat Characteristics Jointly Determine Soil Arthropod Diversity in Southwest China DOI
Shaohui Li, Shangwen Xia, Akihiro Nakamura

et al.

Published: Jan. 1, 2024

Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI

Language: Английский

Citations

0
Regional and local patterns of soil arthropod diversity are explained by different processes in southwest China DOI
Shaohui Li, Shangwen Xia, Akihiro Nakamura

et al.

CATENA, Journal Year: 2024, Volume and Issue: 246, P. 108426 - 108426

Published: Oct. 1, 2024

Language: Английский

Citations

0