Timing Matters: Viticultural Land Use Determines Responses in Structure and Function of Fungal Stream Communities Across One Growing Season

Global Change Biology, Год журнала: 2025, Номер 31(2)

Опубликована: Фев. 1, 2025

ABSTRACT Fungal communities are critical for leaf decomposition, a central ecosystem function in streams. A wide range of anthropogenic stressors can alter their structure and (i.e., decomposition). Additionally, fungal subject to seasonal turnover due natural processes. Despite this, seasonality interaction with varying stressor exposure has rarely been studied the context decomposition. We investigated community composition decomposition over one agricultural growing season by deploying bags at least impacted forest viticultural sites 10 we transplanted that had colonised investigate how changes affect communities. Leaf was repeatedly lower treatment than treatment, which partly explained environmental variables. The leaves varied across time points overall more similar treatment. April were treatments, whereas all exhibited different turnover. At later (June, August September), from transplant remained similar, likely triggered priority effects location colonisation (forest). however, deviated these points, coincided timing fungicide application. Overall, show both exhibit stressor‐related variability. Thus, our study demonstrates actual regime need be considered well described when investigating land use on associated

Язык: Английский

---

Pesticide contamination of small standing water bodies in the agricultural landscape of northeast Germany

The Science of The Total Environment, Год журнала: 2025, Номер 975, С. 179250 - 179250

Опубликована: Апрель 7, 2025

Язык: Английский

---

Assessing chemical pollution with biomonitoring approaches in streams and rivers: a critical review

Environmental Sciences Europe, Год журнала: 2025, Номер 37(1)

Опубликована: Май 8, 2025

Язык: Английский

---

Assessing Event-Driven Dynamics of Pesticides and Transformation Products in an Agricultural Stream Using Comprehensive Target, Suspect, and Nontarget Analysis

Environmental Science & Technology, Год журнала: 2025, Номер unknown

Опубликована: Май 9, 2025

A comprehensive assessment of pesticide transport in surface waters is challenging due to discharge characteristics and the occurrence transformation products (TPs). Detailed long-term sampling concentrations, including rainfall application events, still lacking better predict pathways toxicity within agricultural catchments. In present study, TP dynamics were evaluated over a three-year monitoring period, which included 12 stormwater events 7 dry events. An extensive target screening for 328 pesticides was conducted, while simultaneously performing suspect nontarget analysis (SNTA) using liquid chromatography high-resolution mass spectrometry. Twenty-one two TPs associated with main crop, rice, identified as major pollutants. The risk results, based on stepwise data collection, suggested that insecticides, primarily neonicotinoids, exhibited severe ecological risk. Additionally, SNTA revealed presence 8 parent compounds 46 TPs. occurred following peak periods, indicating integrated practical approach assessment. precautionary identification suggests potential aquatic effects may be underestimated by conventional strategy.

Язык: Английский

---

Population structure and insecticide response of Gammarus spp. in agricultural and upstream forested sites of small streams

Environmental Sciences Europe, Год журнала: 2023, Номер 35(1)

Опубликована: Июнь 3, 2023

Abstract Exposure to pesticides may cause adaptation not only in agricultural pests and pathogens, but also non-target organisms. Previous studies mainly searched for adaptations organisms pesticide-polluted sites. However, propagate heritable pesticide effects, such as increased tolerance, non-exposed populations through gene flow. We examined the tolerance—as one of pre-assumptions local adaptation—of freshwater crustacean Gammarus spp. (at genus level reflecting gammarid community). The tolerance was quantified acute toxicity tests using insecticide imidacloprid. Gammarids were sampled at sites (termed agriculture), least impacted upstream refuge) transitional edge) six small streams south-west Germany. Furthermore, we population genetic structure fossarum energy reserves (here lipid content) G. well three site types (i.e. agriculture, edge refuge). found significantly lower imidacloprid from compared refuge sites, potentially due higher environmental stress indicated by a slightly content per mg tissue. no differences between populations, indicating propagation effects edges. among showed significant differentiation streams, within stream across types. suggest that high flow each hindered resulted similar (pre)adaptations levels types, although they exhibited different pollution. Further on target genes (e.g., conferring tolerance), fitness phenotypes particular are required adjacent pristine ecosystems detect potential propagations effects.

Язык: Английский

---

Combined effects of herbicides and insecticides reduce biomass of sensitive aquatic invertebrates

The Science of The Total Environment, Год журнала: 2024, Номер 946, С. 174343 - 174343

Опубликована: Июль 1, 2024

The structure and biomass of aquatic invertebrate communities play a crucial role in the matter dynamics streams. However, is rarely quantified ecological assessments streams, little known about environmental anthropogenic factors that influence it. In this study, we aimed to identify are associated with through monitoring 25 streams across Germany. We identified invertebrates, assigned them taxonomic trait-based groups, using image-based analysis. found insecticide pressure generally reduced abundance insecticide-vulnerable populations (R

Язык: Английский

---

The impact of repeated pyrethroid pulses on aquatic communities

The Science of The Total Environment, Год журнала: 2024, Номер 955, С. 177177 - 177177

Опубликована: Ноя. 2, 2024

Язык: Английский

---

Relationship between stream size, watershed land use, and pesticide concentrations in headwater streams

Environmental Pollution, Год журнала: 2024, Номер 349, С. 123940 - 123940

Опубликована: Апрель 8, 2024

Язык: Английский

---

Temporal and spatial trends of imidacloprid-related hazards in France

The Science of The Total Environment, Год журнала: 2024, Номер 945, С. 173950 - 173950

Опубликована: Июнь 13, 2024

Neonicotinoids are the top-selling insecticides worldwide. Because of their method use, mainly to coat seeds, neonicotinoids have been found widely contaminate environment. Their high toxicity has shown be a major concern in terms impact on biodiversity, and use these associated with population declines species different countries. Despite widespread recognition risk temporal spatial remains poorly known many Yet this information is essential address potential impacts pesticides biodiversity inform measures establish protected areas or restoration. The present study relied large publicly available dataset characterise France imidacloprid, most used neonicotinoid worldwide, as well analysed water contamination surveys between 2005 2022 assess results show that imidacloprid was main over period. This spatially structured, higher northern western France, particularly related cereal beet crops area. survey indicated contaminated environment consequently increased especially counties crossed by Loire, Seine Vilaine rivers. 2018 due decreased sharply after its ban, although it reauthorized derogation for sugar 2021. first assessment pressure shows correlation agricultural practices freshwater level. These will help identify priority mitigation restoration measures.

Язык: Английский

---

Large monitoring datasets reveal high probabilities for intermittent occurrences of pesticides in European running waters

Environmental Sciences Europe, Год журнала: 2023, Номер 35(1)

Опубликована: Ноя. 2, 2023

Abstract Many studies have investigated short-term peak concentrations of pesticides in surface waters resulting from agricultural uses. However, we lack information to what extent reoccur over medium (> 4 days) and longer time periods 10 days). We use here large-scale pesticide monitoring data across Europe (~ 15 mil. measurements, i.e., quantified water at > 17,000 sites for 474 compounds) evaluate the degree which were not only detected once, but sequences a compound repeatedly same area (0.015 km 2 ) within 4–30 days. Reoccurrence was observed ~ 18% 76% compounds, 40% priori considered chronically expose aquatic ecosystems. calculated probability reoccurrence (POR) medium-term (4–7 long-term (8–30 360 pesticides. Relative PORs (ratio between POR) revealed three occurrence patterns: ephemeral, intermittent permanent. While fungicides dominated intermittently occurring substances, aligning with application strategies physico-chemical properties, neonicotinoids legacy among substances permanently occurring. The results this study shed new light on previously underestimated longer-term many environments (35% or pollute environment chronically), entailing challenges chronic risk assessments evaluation effects biodiversity.

Язык: Английский

---