The problem of agricultural ‘diffuse’ pollution: Getting to the point

The Science of The Total Environment, Journal Year: 2019, Volume and Issue: 677, P. 700 - 717

Published: April 25, 2019

Language: Английский

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An interpretable machine learning method for supporting ecosystem management: Application to species distribution models of freshwater macroinvertebrates

Journal of Environmental Management, Journal Year: 2021, Volume and Issue: 291, P. 112719 - 112719

Published: May 1, 2021

Language: Английский

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Physical and biological controls on fine sediment transport and storage in rivers

Wiley Interdisciplinary Reviews Water, Journal Year: 2018, Volume and Issue: 6(2)

Published: Dec. 25, 2018

Excess fine sediment, comprising particles <2 mm in diameter, is a major cause of ecological degradation rivers. The erosion sediment from terrestrial or aquatic sources, its delivery to the river, and storage transport fluvial environment are controlled by complex interplay physical, biological, anthropogenic factors. While physical controls exerted on dynamics relatively well‐documented, role biological processes their interactions with hydraulic physicochemical phenomena has been largely overlooked. activities biota, primary producers predators, exert strong deposition, infiltration, resuspension. For example, extracellular polymeric substances associated biofilms increase deposition decrease In lower energy rivers, macrophyte growth senescence intimately linked retention loss, whereas riparian trees dominant ecosystem engineers high systems. Fish invertebrates also have profound effects through that drive both particle depending species composition abiotic conditions. functional traits present will determine not only these biotic but responses river ecosystems excess sediment. We discuss which involved put them into context spatial occur throughout network. strides towards better understanding impacts made, further progress identify most effective management approaches urgently required close communication between authorities scientists. This article categorized under: Water Life > Nature Freshwater Ecosystems Stresses Pressures Science Quality

Language: Английский

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Impacts of multiple anthropogenic stressors on stream macroinvertebrate community composition and functional diversity

Ecology and Evolution, Journal Year: 2020, Volume and Issue: 11(1), P. 133 - 152

Published: Dec. 16, 2020

Ensuring the provision of essential ecosystem services in systems affected by multiple stressors is a key challenge for theoretical and applied ecology. Trait-based approaches have increasingly been used multiple-stressor research freshwaters because they potentially provide powerful method to explore mechanisms underlying changes populations communities. Individual benthic macroinvertebrate traits associated with mobility, life history, morphology, feeding habits are often determine how environmental drivers structure stream However, date on invertebrates has focused more taxonomic than functional metrics. We conducted fully crossed, 4-factor experiment 64 mesocosms fed pristine montane (21 days colonization, 21 manipulations) investigated effects nutrient enrichment, flow velocity reduction sedimentation invertebrate community, taxon, diversity trait variables after 2 3 weeks stressor exposure. 89% community metrics, 59% common taxa, 50% 79% responded at least one each. Deposited fine sediment had strongest impacts, affecting abundances diversity, their translated into redundancy. Stressor varied between sampling occasions, further complicating prediction Overall, our study suggests that future combining trait, assessments can improve understanding interactions running waters.

Language: Английский

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What is the deal with the Green Deal: Will the new strategy help to improve European freshwater quality beyond the Water Framework Directive?

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 791, P. 148080 - 148080

Published: May 28, 2021

Agricultural land use covers almost half of the EU territory and reducing nutrient pesticide losses to freshwaters is central existing policy. However, progress improving freshwater quality eutrophication slow lags behind targets. The Green Deal a key element plans implement United Nation's Sustainable Development Goals. Here, we discuss opportunities that associated strategies may provide for achievement water goals Water Framework Directive in agricultural landscapes. We welcome Deal's aspirational stated goals. reliance mitigation diffuse pollution on reform Common Policy represents grave risks practical implementation objectives. also argue new should be targeted at tackling understanding sources problems along full continuum. To maximise from achieving delayed targets, stress range instruments will needed close gaps continuum 'from source impact'. These include: (I) smart standardised monitoring impacts proposed eco-schemes agri-environment-climate measures, (ii) active restoration streams ditches their floodplains reduce secondary sources, (iii) options draw down levels or below agronomic optimum legacy (iv) integrating farm-scale catchment-scale analysis trade-offs different pollutants combined effects, finally (v) accounting emerging pressures due climate change. Incorporation framework into ensure European water-related policy are achieved.

Language: Английский

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Spatial distribution of benthic taxonomic and functional diversity in the Yellow River Basin: From ecological processes to associated determinant factors

Environment International, Journal Year: 2024, Volume and Issue: 188, P. 108745 - 108745

Published: May 12, 2024

One of the fundamental objectives in ecology is to investigate ecological processes and associated factors governing abundance spatial distribution patterns biodiversity. However, reaction biological communities environmental degradation remains relatively unknown, even for ecologically crucial like macroinvertebrates aquatic ecosystems. Here, we sampled 117 locations quantify relative contributions geographical factors, including water quality, land use, climate, hydrological determine absolute compositions macroinvertebrate their Yellow River Basin (YRB), sixth-longest river system on Earth. We assessed roles species sorting dispersal determining community structure along YRB. Our results demonstrated that alpha beta diversity indices showed an increase from up- low-reaches The middle exhibited elevated both regions stable compositions. biodiversity was influenced by a combination variables, with predominantly serving as principal determinants. Results multiple linear regression variance decomposition effect approximately three times greater than factors. These findings provide support hypothesis sorting, driven gradients, plays significant role shaping running ecosystems at basin scales. Moreover, contributing substantial shifts across different segments YRB indicate distinct sections have been varying stressors, downstream areas being more susceptible impacts pollution urbanization resulting human activities.

Language: Английский

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The drivers of multiple dimensions of stream macroinvertebrate beta diversity across a large montane landscape

Limnology and Oceanography, Journal Year: 2020, Volume and Issue: 66(1), P. 226 - 236

Published: Sept. 23, 2020

Abstract Environmental filtering and spatial processes have been associated with variation in ecological communities biodiversity; however, their relative importance on multiple dimensions of beta diversity has not fully explored montane streams. Here, we examined the contribution local, catchment climate environmental variables factors to three macroinvertebrate upper Han River Basin. Taxonomic, functional, phylogenetic diversities respective turnover nestedness components were calculated for assemblages sampled a total 130 stream sites across large mountainous landscape. We investigated correlations between facets using MSR‐Mantel procedure then influence each set through redundancy analysis variance partitioning. Our results revealed relatively low congruence among dimensions, indicating these are independent measures which offer complementary information community assembly. Beta best explained by local factors, whereas large‐scale appeared less influential. Moreover, generally exerted different controls depending under consideration. Taxonomic more strongly determined via dispersal limitation, while functional was mainly environments habitat filtering. challenge perspective that one facet as surrogate others is enough, highlight need integrate metacommunity biodiversity research.

Language: Английский

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Variability in macroinvertebrate community structure and its response to ecological factors of the Weihe River Basin, China

Ecological Engineering, Journal Year: 2019, Volume and Issue: 140, P. 105595 - 105595

Published: Sept. 16, 2019

Language: Английский

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Streambed pollution: A comprehensive review of its sources, eco-hydro-geo-chemical impacts, assessment, and mitigation strategies

Chemosphere, Journal Year: 2022, Volume and Issue: 300, P. 134589 - 134589

Published: April 11, 2022

Language: Английский

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Temporal effects of fine sediment deposition on benthic macroinvertebrate community structure, function and biodiversity likely reflects landscape setting

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 829, P. 154612 - 154612

Published: March 18, 2022

Globally, excessive fine sediment (particles <2 mm) deposition is acknowledged to have deleterious effects on aquatic biodiversity. However, the impacts are often equivocal possibly reflecting landscape context, although this rarely considered. To address this, we examined temporal response of macroinvertebrate taxonomic and functional diversity experimental clogging in a prealpine (Italy) lowland setting (UK). Colonisation devices were installed insitu with either clean or clogged substrates for short (7-14 days), medium (21-28 days) long (56-63 timescales. Clogging resulted altered community composition both rivers modified river. Nestedness was consistently found be dominant process driving differences between environment, forming nested community. No component structured communities. Functional driven by nestedness environments but heavily case river, low redundancy. Widely employed richness metrics (EPT, taxa richness) only displayed loading environment characterized as sensitive well some feeding groups did exhibit settings. In intensified over time several metrics. Although further research required corroborate our findings extend observations across more typologies, pervasive stressor affecting communities environments. biodiversity facets that responded differed two settings probably wider environmental filtering. Monitoring managing likely requires context specific approaches maximise ecological benefits.

Language: Английский

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