Fish Diversity Patterns and Their Responses to Environmental Factors in a Global Biodiversity Hotspot

Aquatic Conservation Marine and Freshwater Ecosystems, Journal Year: 2025, Volume and Issue: 35(4)

Published: April 1, 2025

ABSTRACT Biodiversity loss has increased interest in understanding biodiversity patterns and their driving mechanisms global. A growing of empirical evidence suggests that, addition to purely species diversity, studies phylogenetic diversity can provide distinct but complementary information about mechanisms. However, there was still a lack research on integrating analyse the spatial fish diversity. Here, we evaluated response assemblages environmental factors Jiangxi Province. The results showed that 243 were recorded province, including 14 invasive species. There 126 native China 33 endemic Yangtze River Basin. Red List IUCN assessments 31 (12.8%) 16 (6.6%) Threatened or Near (1 Extinct; 6 1 Critically Endangered; 3 Endangered, 8 5 Vulnerable, Threatened), respectively. number carnivorous (111), demersal (143) resident (153) higher than other functional taxa. Fish not significantly differences ( p = 0.521), exhibited 0.001). turnover (0.53) nestedness (0.17), larger protected areas would be necessary conserve regional biodiversity. Environmental geographic generally had no significant effect only nitrate nitrogen correlated with highlight importance evaluating both when identifying useful implications guidance for conservation regions facing human disturbances.

Language: Английский

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One-step green construction of granular composite hydrogels for ammonia nitrogen recovery from wastewater for crop growth promotion

Environmental Technology & Innovation, Journal Year: 2023, Volume and Issue: 33, P. 103465 - 103465

Published: Dec. 3, 2023

The great application potential of hydrogel adsorbent in water treatment has been widely reported recent years. However, practical is severely restricted due to the tedious preparation procedures, high energy consumption, and environmental threat spent after adsorption. To address these challenges, a new method was proposed this study prepare granular composites through one-step polymerization induced phase separation (PIPS), initiated via redox reaction consisting with calcined oil shale semi-coke (COSSC) active ingredients green tea (GT) at 40 oC. Then applied remove NH4-N wastewater, adsorbing used as medium for plant growth. exhibited favorable swelling capacity 205 g/g excellent adsorption 40.2 mg/g NH4-N. Remarkably, process achieved equilibrium only within 30 min. avoid influence soil other factors, we conducted soilless cultivation experiment, results showed that total seed biomass mung bean increased by 33.69% adding 1% hydrogels into culture medium. Based on above performance, presented feasible idea offered promising strategy sustainable utilization adsorbent.

Language: Английский

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Comparison of magnetite, hematite and goethite amendment and capping in control of phosphorus release from sediment

Environmental Science and Pollution Research, Journal Year: 2023, Volume and Issue: 30(24), P. 66080 - 66101

Published: April 25, 2023

Language: Английский

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Achieved advanced wastewater phosphate removal via improved ionic interference resistance in a migration-electric-field assisted electrocoagulation (MEAEC) system with modified-biochar pseudocapacitor electrode

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 328, P. 124972 - 124972

Published: Sept. 3, 2023

Language: Английский

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Food web restoration lags behind biological communities: a case study from a floodplain wetland

Hydrobiologia, Journal Year: 2024, Volume and Issue: 851(11), P. 2609 - 2626

Published: Feb. 16, 2024

Language: Английский

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Ecosystem-level response to complex disturbances of an interconnected river–lake system based on Ecopath model over the last 30 years

Hydrobiologia, Journal Year: 2024, Volume and Issue: unknown

Published: June 17, 2024

Language: Английский

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Patterns and drivers in the functional diversity decomposition of invaded stream fish communities

Diversity and Distributions, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 1, 2024

Abstract Aim The assembly of real‐world ecological communities in human‐modified landscapes is influenced by a complex interplay spatial, temporal, environmental and invasion gradients. However, understanding the relative importance these drivers their interactions shaping functional remains elusive. Our study aimed to investigate influence on stream fish metacommunity. Location Streams Lake Balaton catchment, Hungary. Methods We analysed long‐term (18‐year) dataset metacommunity, focusing changes diversity (Q), redundancy (R) species dominance (D). Ternary diagrams were utilized decompose into Q, R D components visualize patterns. Linear mixed‐effect regression separate structural equation models employed identify significant D. Results Native exhibited low (Q) but high (D), indicating convergence dominance. Stream habitat size, network position associated physical chemical gradients emerged as consistently R. Changes Q additionally linked non‐native community properties subtle shifts land use within‐stream characteristics. Main Conclusions findings suggest that both filtering interspecies interactions, particularly trait similarity between invaders natives shape metacommunities. Despite minimal temporal directional changes, predominantly patterns native communities, overshadowing effects. underscore considering mechanisms assembly. Additionally, joint application decomposition frameworks with predictive modelling provides comprehensive insight across communities.

Language: Английский

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Food web structure mediate positive and negative effects of diversity on ecosystem functioning in a large floodplain river

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 26, 2024

Research programs on Biodiversity-Ecosystem Functioning (BEF) and Food Web Structure (FWS) have contributed to understanding the impact of biodiversity functioning architecture ecosystems, but interconnectedness between these components was seldom attended until recently. Several theoretical hypotheses predict an interconnection BEF FWS were poorly independently evaluated. We estimated 63 sink food webs predatory fish in Parana River, covering a large gradient community richness. evaluated available their interrelationship through path analyses. A well-supported causal structure identified, supporting that species richness directly increased standing biomass, modularity, intermodular connection, whereas decreased interaction strength, connectance, nestedness. direct positive effect modularity connectance biomass indicates can determine BEF. Richness promotes increase also decrease due decay with similar negative effects biomass. In this sense, relationship diversity ecosystem cannot be blind FWS. Environmental homogenization reduction functional may undermine conditions for modular webs, switching ones potential cascading whole ecosystem.

Language: Английский

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Preparation of La/Mg modified sheep dung activated carbon and its adsorption characteristics for phosphorus in wastewater

Desalination and Water Treatment, Journal Year: 2024, Volume and Issue: 317, P. 100013 - 100013

Published: Jan. 1, 2024

The resource utilization of sheep dung from farming waste was evaluated in adsorption total phosphorus (TP). Four types modified activated carbon (SDAC) were prepared: SDAC without metal (SDAC-N), with lanthanum (SDAC-La), magnesium (SDAC-Mg), and La Mg (SDAC-La-Mg). various SDACs prepared tested the TP wastewater. main components SDAC-La-Mg surface MgO La2O3. rich functional groups such as CC CO acquired a negative charge. At 25 °C pH 4, capacity 1.94 mg/g. Among four adsorbents, exhibited highest capacity. by followed secondary kinetic Langmuir isothermal models, primarily through chemisorption mechanisms ion exchange, chemical precipitation, covalent bonding. regenerated, removal rate remained at 65% after three regeneration cycles. ions combine carboxylate to form ligand compounds, enabling displacing -OH group on an inner complex. Thus, can be used effective adsorbent for wastewater treatment.

Language: Английский

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Study on Enhancement of Denitrification Performance of Alcaligenes faecalis

Separations, Journal Year: 2023, Volume and Issue: 10(12), P. 597 - 597

Published: Dec. 8, 2023

Nitrogen pollution in water bodies presents a serious threat to ecosystems due its role eutrophication. In this study, the aerobic denitrifying bacterium Alcaligenes faecalis was used as model microorganism investigate optimal operating conditions for nitrogen removal from nitrogen-containing wastewater by under different aeration modes, microbial dosages and C/N ratios. The results showed that mode efficient bacterial denitrification 10 min of with 30 interval, total reached 87.82%. At doses, NO3−–N completely denitrified NO2−–N accumulation levels were reduced, all which resulted significant denitrification, final efficiencies 86.39–98.50%. With an increase ratio, pollutant performance bacteria increased. When ratio 17, rates NO3−–N, TN COD 100%, 98.50% 96.13%, respectively. lower ratios, growth metabolism microorganisms inhibited fewer electron acceptors available during process, seriously affected performance. explored experiments using changes mode, dosage treating nitrogenous indicated. This provides technical support improving remediation effect theoretical basis further in-depth research on future.

Language: Английский

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