Macroinvertebrate community composition and river health assessment in plateau rivers of Guizhou Province, China DOI Creative Commons

S. Ge,

Fan Zhu,

Yang Su

et al.

Aquatic Biology, Journal Year: 2023, Volume and Issue: 33, P. 1 - 11

Published: Nov. 20, 2023

Plateau rivers are considered regional water resource depots, hydropower energy bases, cradles of aquatic dispersal, and barriers to invasive alien species. In this study, 20 major plateau from Guizhou Province, China, were studied (1) investigate the composition, functional feeding group distribution, diversity macroinvertebrates; (2) assess ecosystem health using macroinvertebrate Family Biotic Index. Among species, dammed river sections primarily contained Corbicula fluminea C. nitens Lamellibranchia, urban harbored Bellamya aeruginosa Semisulcospira cancellata Gastropoda, reference sensitive taxa including mayfly Ecdyonurus yoshidae caddisfly Stenopsyche tlenmushanensis . in Guizhou, exhibited highest density macrobenthic organisms. The Shannon-Wiener index was lowest sections, followed by while diversity. As for groups, filter feeders significantly higher than that other groups. contrast, gatherer-collectors shredders relatively low. Assessment showed an unhealthy state, mainly fell into sub-healthy category, had a good status. results study provide baseline data is useful resources management, utilization, ecological environmental protection rivers.

Language: Английский

Environmental DNA metabarcoding reveals the effect of environmental selection on phytoplankton community structure along a subtropical river DOI Open Access

Luping Zeng,

Jing Wen,

Bangjie Huang

et al.

Environmental Research, Journal Year: 2023, Volume and Issue: 243, P. 117708 - 117708

Published: Nov. 21, 2023

Language: Английский

Citations

10
Taxonomic dependency and spatial heterogeneity in assembly mechanisms of bacteria across complex coastal waters DOI Creative Commons

Huizhen Yan,

Dan-Dan Lin,

Gaoke Gu

et al.

Ecological Processes, Journal Year: 2024, Volume and Issue: 13(1)

Published: Jan. 22, 2024

Abstract Background Understanding community assembly mechanisms across taxa and space is fundamental for microbial ecology. However, the variability determinants of processes over remain unclear. Here, we investigated taxonomic dependency spatial heterogeneity in bacterial coastal waters East China Sea using neutral null models with customized visualization strategies. Results Overall, varied broad groups (phyla proteobacterial classes) at regional scale. A determinism–stochasticity balanced mechanism governed total assembly, while existed ecological processes. Among features, niche breadth negative-to-positive cohesion ratio were strongly associated determinism-to-stochasticity groups. Bacterial commonly exhibited heterogeneity, extent which Spatial bacteria was directly driven by many environmental factors potential interactions between taxa, but not geographic factors. higher more related to and/or (except Bacteroidetes), those lower features. Conclusions Our results confirm pervasiveness providing a finer understanding about regulation complex waters.

Language: Английский

Citations

3
Beta diversity of freshwater algal communities: influence of different dispersal mechanisms DOI
Crislaine Cochak, Felipe Morais Zanon, Alfonso Pineda

et al.

Aquatic Sciences, Journal Year: 2024, Volume and Issue: 86(2)

Published: Jan. 11, 2024

Language: Английский

Citations

2
Stream Algal Biomass Associations with Environmental Variables in a Temperate Rainforest DOI Open Access
Elsa K. Toskey, Stephen M. Bollens, Gretchen Rollwagen‐Bollens

et al.

Water, Journal Year: 2024, Volume and Issue: 16(11), P. 1533 - 1533

Published: May 27, 2024

Benthic algae and autotrophic seston are important bases of stream food webs, several different environmental factors may influence their biomass. We explored how benthic biomass (using chlorophyll-a as a proxy for algal biomass) were associated with temperature, channel width, canopy cover, cardinal orientation, macroinvertebrate functional feeding group abundance, salmonid biomass, water velocity in 16 small, fish-bearing streams the temperate rainforest Olympic Peninsula Washington State, USA, summer 2020. performed mixed-effects regression analysis extracted (chl-a) then used model averaging to determine significant (α = 0.05) algal–environmental associations separately. found that chl-a concentration increased significantly temperature (p 0.0085) decreased 0.0053). For seston, we predator abundance 0.0007) 0.0160). This study underscores need consider broad range variables when making research management decisions concerning ecology.

Language: Английский

Citations

2
Investigation of phytoplankton community structure and formation mechanism: a case study of Lake Longhu in Jinjiang DOI Creative Commons
Yongcan Jiang, Yi Wang, Zekai Huang

et al.

Frontiers in Microbiology, Journal Year: 2023, Volume and Issue: 14

Published: Oct. 5, 2023

In order to explore the species composition, spatial distribution and relationship between phytoplankton community environmental factors in Lake Longhu, structures were investigated July 2020. Clustering analysis (CA) of similarities (ANOSIM) used identify differences composition. Generalized additive model (GAM) variance partitioning (VPA) further analyzed contribution The critical influencing identified using redundancy (RDA). results showed that a total 68 found 7 phyla Longhu. Phytoplankton density ranged from 4.43 × 105 2.89 106 ind./L, with average 2.56 ind./L; biomass 0.58-71.28 mg/L, 29.38 mg/L. Chlorophyta, Bacillariophyta Cyanophyta contributed more density, while Chlorophyta Cryptophyta biomass. CA ANOSIM indicated there obvious communities. GAM VPA demonstrated had distance attenuation effect, autocorrelation phenomenon, which significantly affected construction. There significant effects together drove composition structure. addition, pH, water temperature, nitrate nitrogen, nitrite nitrogen chemical oxygen demand main affecting

Language: Английский

Citations

5
Non-negligible roles of upstream rivers in determining the antibiotic resistance genes community in an interconnected river-lake system (Dongting lake, China) DOI

Shanghua Wu,

Shijie Wang, Yuzhu Dong

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 946, P. 173926 - 173926

Published: June 19, 2024

Language: Английский

Citations

1
Phytoplankton community assembly mechanisms and driving factors during wet seasons in Lake Poyang DOI Open Access
Wu Qiang, Jutao Liu,

Wen Chunyun

et al.

Journal of Lake Sciences, Journal Year: 2024, Volume and Issue: 36(5), P. 1353 - 1365

Published: Jan. 1, 2024

Language: Английский

Citations

0
Differences in seasonal dynamics, ecological driving factors and assembly mechanisms of planktonic and periphytic algae in the highly urban Fenhe River DOI Creative Commons

Kangxu Zhao,

Wei Wang, Hanjie Huang

et al.

Ecological Processes, Journal Year: 2024, Volume and Issue: 13(1)

Published: Sept. 27, 2024

Abstract Background Algae play important roles in urban river ecosystems and are the cornerstones of most water quality monitoring programs. Thus, a better understanding algal community dynamics is needed to support sustainable management resources rivers. Results In this study, we quantified seasonal variations planktonic periphytic structure highly Fenhe River identified environmental factors affecting diversity. We monitored (drifting) (attached) communities Taiyuan section over one year. The results indicated that Cyanophyta was dominant phylum both communities, followed by Bacillariophyta Chlorophyta. Significant differences were observed composition communities. particular, more diverse than community. Water temperature pH main structure, respectively, while nutrients significant factor Ecological modeling mainly driven stochastic processes. A co-occurrence network developed for displayed positive interactions between algae. Conclusions These findings deepen our interaction algae driving River. They also provide theoretical basis managing protecting ecosystems.

Language: Английский

Citations

0
River-lake ecosystems exhibit a strong seasonal cycle of greenhouse gas emissions DOI Creative Commons
Shijie Wang, Shanghua Wu, Yuzhu Dong

et al.

Communications Earth & Environment, Journal Year: 2024, Volume and Issue: 5(1)

Published: Dec. 23, 2024

Inland lakes are a crucial source of greenhouse gases, such as carbon dioxide, methane and nitrous oxide. The interconnected river-lake systems feature multiple lake regions, wherein numerous rivers interconnect various regions. Their intricate hydrological conditions interactions distinguish them from conventional lakes, which typically have single relatively static water body. However, the gas emission characteristics, well driving forces systems, still under-researched. Here, we carried out bi-seasonal in situ surveys across typical system, Dongting Lake, along with meta-analysis derived 168 spanning six continents, to elucidate this issue. We found that exhibit unique temporal variation dioxide oxide fluxes, positive fluxes during wet season but transitioning sinks dry season. Greenhouse stable frequently correlated abiotic factors, hydro-climatological trophic status. While specific microbial species important cycling macronutrients other less common nutrients, alongside predatory behaviour, can better predict fluxes. Our study highlights importance biotic predictors prospective gases flux estimates. River-lake ecosystems act sources season, according an analysis emissions China, combined global-scale meta-analysis.

Language: Английский

Citations

0
Macroinvertebrate community composition and river health assessment in plateau rivers of Guizhou Province, China DOI Creative Commons

S. Ge,

Fan Zhu,

Yang Su

et al.

Aquatic Biology, Journal Year: 2023, Volume and Issue: 33, P. 1 - 11

Published: Nov. 20, 2023

Plateau rivers are considered regional water resource depots, hydropower energy bases, cradles of aquatic dispersal, and barriers to invasive alien species. In this study, 20 major plateau from Guizhou Province, China, were studied (1) investigate the composition, functional feeding group distribution, diversity macroinvertebrates; (2) assess ecosystem health using macroinvertebrate Family Biotic Index. Among species, dammed river sections primarily contained Corbicula fluminea C. nitens Lamellibranchia, urban harbored Bellamya aeruginosa Semisulcospira cancellata Gastropoda, reference sensitive taxa including mayfly Ecdyonurus yoshidae caddisfly Stenopsyche tlenmushanensis . in Guizhou, exhibited highest density macrobenthic organisms. The Shannon-Wiener index was lowest sections, followed by while diversity. As for groups, filter feeders significantly higher than that other groups. contrast, gatherer-collectors shredders relatively low. Assessment showed an unhealthy state, mainly fell into sub-healthy category, had a good status. results study provide baseline data is useful resources management, utilization, ecological environmental protection rivers.

Language: Английский

Citations

0