Estimating nutrient thresholds for eutrophication management: Novel insights from understudied lake types

The Science of The Total Environment, Год журнала: 2022, Номер 827, С. 154242 - 154242

Опубликована: Март 2, 2022

Nutrient targets based on pressure-response models are essential for defining ambitions and managing eutrophication. However, the scale of biogeographical variation in these relationships is poorly understood, which may hinder eutrophication management regions where lake ecology less intensively studied. In this study, we derive ecology-based nutrient five major ecoregions Europe: Northern, Central-Baltic, Alpine, Mediterranean Eastern Continental. As a first step, developed regressions between concentrations ecological quality ratios (EQR) phytoplankton macrophyte communities. Significant were established 13 types; most cases, stronger phosphorus than nitrogen, macrophytes. Using regressions, estimated total (TP) nitrogen (TN) at lakes different types likely to achieve good status. very shallow Continental region, relations biological communities weak or non-significant. This can be attributed high (in asymptotic zone phosphorus-phytoplankton models) suggesting other factors (light, grazing) limit primary production. also show that fish stocking pressure lakes, negatively affecting status: with low chlorophyll-a status despite levels, while study highlights need better understand biogeographic have been, historical reasons, This, turn, helps reveal challenge dominant paradigms assessment management.

Язык: Английский

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A global assessment of lake restoration in practice: New insights and future perspectives

Ecological Indicators, Год журнала: 2023, Номер 158, С. 111330 - 111330

Опубликована: Дек. 5, 2023

A global survey of 179 restoration practitioners spanning 65 countries identified the extent stakeholder engagement as a key factor determining success or failure projects. Lack support across sectors and for funding, policy, monitoring, governance knowledge assessment pressures their effects were most frequently cited factors contributing to failure. The responses indicate that, although nutrient enrichment is perceived be primary issue lakes globally, impacts climate change, hydrological modifications invasive species are widely recognized pervasive anthropogenic importance. Practitioners that ecosystem services impacted by these recreation tourism, in low income provisioning service, aquaculture, was considered impacted. Ecology-based and/or pressure-related targets had been set programs our survey. However, strength evidence underpinning often weak change rarely when setting targets. effective used measures target loading (both catchment in-lake) while implementation nature-based solutions lesser extent. Measures control non-native applied viewed being largely ineffective. results provide direction future work. New emerging pressures, singly combination, may require new approaches lake restoration: both devising strategies. depends on joined-up thinking better integrates science into policy practice and, importantly, ensures strong inclusive collaboration multiple sectors.

Язык: Английский

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Towards harmonized standards for freshwater biodiversity monitoring and biological assessment using benthic macroinvertebrates

The Science of The Total Environment, Год журнала: 2024, Номер 918, С. 170360 - 170360

Опубликована: Фев. 2, 2024

Monitoring programs at sub-national and national scales lack coordination, harmonization, systematic review analysis continental global scales, thus fail to adequately assess evaluate drivers of biodiversity ecosystem degradation loss large spatial scales. Here we the state art, gaps challenges in freshwater assessment for both biological condition (bioassessment) monitoring ecosystems using benthic macroinvertebrate community. To existence nationally- regionally- (sub-nationally-) accepted protocols that are put practice/used each country, conducted a survey from November 2022 May 2023. Responses 110 respondents based 67 countries were received. Although responses varied their consistency, clearly demonstrated being done levels lakes, rivers artificial waterbodies. Programs bioassessment more widespread, some cases even harmonized among several countries. We identified 20 challenges, which classed into five major categories, these (a) field sampling, (b) sample processing identification, (c) metrics indices, (d) assessment, (e) other challenges. Above all, identify harmonization as one most important gaps, hindering efficient collaboration communication. IUCN SSC Global Freshwater Macroinvertebrate Sampling Protocols Task Force (GLOSAM) means address globally-harmonized protocols.

Язык: Английский

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Biomarkers in aquatic systems: Advancements, applications and future directions

The Egyptian Journal of Aquatic Research, Год журнала: 2024, Номер 50(2), С. 169 - 182

Опубликована: Май 31, 2024

Biomarkers play a pivotal role in monitoring the ecological integrity of aquatic environments. They offer valuable insights into impacts pollutants and environmental stressors on health ecosystems. By assessing changes biomarker levels or activities, scientists can effectively identify quantify exposure to effects contaminants. This review illustrates different types classes biomarkers their application understanding how affect organisms at molecular, cellular, organismal levels. In addition, integrating with assessments is discussed, emphasizing importance considering multiple biological organization monitoring. Additionally, this discusses recent advancements research through development novel biomarkers, integration omics technologies, bioinformatics, real-time monitoring, assessments, risk assessment management.

Язык: Английский

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Aquatic ecosystem indices, linking ecosystem health to human health risks

Biodiversity and Conservation, Год журнала: 2025, Номер unknown

Опубликована: Янв. 16, 2025

Abstract The good functioning of aquatic ecosystems is essential for providing diverse ecosystem services that benefit humans. degradation health due to continuous stressors, such as climate change or water pollution, leading an increase in human risks and well-being. Indicators have been developed determine from recreational drinking water. Still, a general application linking has not done. We here reviewed indicators indices applied assess the their links with risk evaluated extent which can witness A total 245 articles were reviewed, consisting 185 on assessment 60 Out 65 described, we use several parameters relevance evaluate risks, including physico-chemical parameters, bioindicators, contaminants, pathogens, therefore covering various sources disturbance. Based our assessment, propose set would allow inclusion well-being (e.g. coliforms, algae, pH, nutrients, chemical compounds, services). Measuring these should be incorporated into future studies understanding linkage health.

Язык: Английский

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Classifying Ecological Quality and Integrity of Estuaries

Elsevier eBooks, Год журнала: 2011, Номер unknown, С. 125 - 162

Опубликована: Янв. 1, 2011

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Estimating river nutrient concentrations consistent with good ecological condition: More stringent nutrient thresholds needed

Ecological Indicators, Год журнала: 2020, Номер 121, С. 107017 - 107017

Опубликована: Ноя. 30, 2020

Nutrient pollution remains one of the leading causes river degradation, making it important to set thresholds that support good ecological condition, which is main objective managing Europe's aquatic environment. A wide range methods has been used by European member states nutrient in past, and these vary greatly among countries, even for similar types. In some have using expert judgement or statistical distribution concentrations. Application such creates problems planning strategies achieve status transboundary basins. An alternative approach examine relationship between concentration one, more, biological variables. Such relationships can then be inform decisions water managers. We use 'ecology-based' approaches (univariate regression mismatch analyses) derive several types Central Europe. Our analysis focused on soluble reactive phosphorus (SRP) total nitrogen (TN), two variables were responsible significant variation (40–55%) benthic floras. this study, first time, are estimated both macrophytes phytobenthos (EQRs) separately combination, calculated as minimum average EQRs sub-elements. The resulting supporting from 21 42 µg/L SRP 0.9–3.5 mg/L TN low alkalinity lowland type, 32–90 1.0–2.5 mid-altitude type. These targets compared values states. demonstrate national fall within predicted if uncertainty taken into consideration; however, threshold considerably exceed range. Adopting ecology-based should improve sustainable management where nutrients major pressure preventing achievement status.

Язык: Английский

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Benthic Diatoms in River Biomonitoring—Present and Future Perspectives within the Water Framework Directive

Water, Год журнала: 2021, Номер 13(4), С. 478 - 478

Опубликована: Фев. 12, 2021

The European Water Framework Directive 2000/60/EC (WFD) has been implemented over the past 20 years, using physicochemical, biological and hydromorphological elements to assess ecological status of surface waters. Benthic diatoms (i.e., phytobenthos) are one most common quality (BQEs) used in water monitoring particularly successful detecting eutrophication, organic pollution acidification. Herein, we reviewed their implementation river biomonitoring for purposes WFD, highlighting advantages disadvantages other BQEs, discuss recent advances that could be applied future biomonitoring. Until now, phytobenthos have intercalibrated by vast majority (26 out 28) EU Member States (MS) 54% total bodies assessed was commonly BQE after benthic invertebrates (85% bodies), followed fish (53%), macrophytes (27%) phytoplankton (4%). To meet WFD demands, numerous taxonomy-based indices developed among MS, presenting, however, uncertainties possibly related species biogeography. Recent development different types (trait-based, DNA sequencing predictive modeling) provide more accurate results biomonitoring, but should validated MS before wide application assessments.

Язык: Английский

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A strategy for successful integration of DNA-based methods in aquatic monitoring

Metabarcoding and Metagenomics, Год журнала: 2022, Номер 6

Опубликована: Июль 20, 2022

Recent advances in molecular biomonitoring open new horizons for aquatic ecosystem assessment. Rapid and cost-effective methods based on organismal DNA or environmental (eDNA) now offer the opportunity to produce inventories of indicator taxa that can subsequently be used assess biodiversity ecological quality. However, integration these DNA-based into current monitoring practices is not straightforward, will require coordinated actions coming years at national international levels. To plan stimulate such an integration, European network DNAqua-Net (COST Action CA15219) brought together experts from academia, as well key stakeholders different countries. Together, this transdisciplinary consortium developed a roadmap implementing with focus inland waters assessed by EU Water Framework Directive (2000/60/EC). This was done through series online workshops held April 2020, which included fifty participants, followed extensive synthesis work. The organised around six objectives: 1) highlight effectiveness benefits methods, 2) develop adaptive approach implementation 3) provide guidelines standards best practice, 4) engage ensure effective knowledge transfer, 5) support sector achieve required changes, 6) steer process harmonise efforts level. paper provides overview forum discussions common views have emerged them, while reflecting diversity situations It highlights important successful ecosystems 2030.

Язык: Английский

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A Review of Knowledge on the Impacts of Multiple Anthropogenic Pressures on the Soft-Bottom Benthic Ecosystem in Mediterranean Coastal Lagoons

Estuaries and Coasts, Год журнала: 2023, Номер 46(8), С. 2190 - 2207

Опубликована: Март 21, 2023

Язык: Английский

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