Effect-directed analysis supporting monitoring of aquatic environments — An in-depth overview

The Science of The Total Environment, Journal Year: 2016, Volume and Issue: 544, P. 1073 - 1118

Published: Jan. 11, 2016

Language: Английский

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Wetland ecosystem health assessment through integrating remote sensing and inventory data with an assessment model for the Hangzhou Bay, China

The Science of The Total Environment, Journal Year: 2016, Volume and Issue: 566-567, P. 627 - 640

Published: May 27, 2016

Language: Английский

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(Eco)toxicological tests for assessing impacts of chemical stress to aquatic ecosystems: Facts, challenges, and future

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 795, P. 148776 - 148776

Published: July 1, 2021

Monitoring of chemicals in the aquatic environment by chemical analysis alone cannot completely assess and predict effects on species ecosystems. This is primarily because increasing number (unknown) stressors mixture present environment. In addition, ability ecological indices to identify underlying causing negative limited. Therefore, additional complementary methods are needed that can address biological a direct manner provide link exposure, i.e. (eco)toxicological tests. (Eco)toxicological tests defined as test systems expose components (cells, individuals, populations, communities) (environmental mixtures of) register effects. These measure responses at sub-organismal (biomarkers vitro bioassays), whole-organismal, population, or community level. We performed literature search obtain state-of-the-art overview ecotoxicological available for assessing impacts biota reveal datagaps. total, we included 509 biomarkers, 207 bioassays, 422 measuring whole-organismal level, 78 population- community- ecosystem-level. Tests level biomarkers were most abundant invertebrates fish, whilst bioassays mostly based mammalian cell lines. ecosystem-level almost missing organisms other than microorganisms algae. an various extrapolation challenges faced using data from these suggest some forward looking perspectives. Although extrapolating measured relevant protection goals remains challenging, combination experiments models key more comprehensive assessment

Language: Английский

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Biomonitoring of intermittent rivers and ephemeral streams in Europe: Current practice and priorities to enhance ecological status assessments

The Science of The Total Environment, Journal Year: 2018, Volume and Issue: 618, P. 1096 - 1113

Published: Jan. 11, 2018

Intermittent rivers and ephemeral streams (IRES) are common across Europe dominate some Mediterranean river networks. In all climate zones, IRES support high biodiversity provide ecosystem services. As dynamic ecosystems that transition between flowing, pool, dry states, typically poorly represented in biomonitoring programmes implemented to characterize EU Water Framework Directive ecological status. We report the results of a survey completed by representatives from 20 European countries identify current challenges status assessment, examples best practice, priorities for future research. five major barriers effective classification IRES: 1. exclusion based on their small catchment size; 2. lack typologies distinguish contrasting IRES; 3. difficulties defining 'reference conditions' represent unimpacted ecosystems; 4. lotic communities sampled using methods developed perennial rivers; 5. reliance taxonomic characterization local communities. Despite these challenges, we recognize innovative practice can inform modification activity promote classification. Priorities research include reconceptualization reference condition approach accommodate spatiotemporal fluctuations community composition, indices health both taxon-specific sensitivities intermittence dispersal abilities, within landscape context.

Language: Английский

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The use of glucocorticoid hormones or leucocyte profiles to measure stress in vertebrates: What’s the difference?

Methods in Ecology and Evolution, Journal Year: 2018, Volume and Issue: 9(6), P. 1556 - 1568

Published: April 24, 2018

Abstract Measuring stress in animals is important many ecological, zoological and veterinary research settings. A common method to measure plasma levels of glucocorticoid hormones (cortisol, corticosterone, hereafter CORT ). Over the past decade, an alternative has become widely popular: assessing leucocyte profiles; other words, heterophil‐to‐lymphocyte ratio (H/L) birds reptiles or neutrophil‐to‐lymphocyte (N/L) mammals, amphibians fish. Recent studies have shown that although both indices reliably change after acute stress, they are not always correlated at baseline, thus interchangeable. This lack correlation led some confusion about which these two measures “better”; more biologically relevant a truer readout stress. In this review, we first document dramatic expansion use profiles assess over decade. We then review published evidence may explain discrepancies between . argue stem from nature reaction role corticosterone (or cortisol) versus leucocytes during response. The differing roles responses translate differences timing each, for researchers studying either chronic Although glucocorticoids rise within minutes onset return baseline 1 2 hr stressor passes, H/L N/L ratios remain low least 30–60 min sometimes more. temporal metrics differs also context long‐term response wanes repeatedly stressed animals, those exposed environmental can often (but always) lead typically, attenuated Meanwhile, appear high under same conditions. Understanding should help decide metric better their particular study, whether would be useful elucidating different elements

Language: Английский

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A new framework for selecting environmental surrogates

The Science of The Total Environment, Journal Year: 2015, Volume and Issue: 538, P. 1029 - 1038

Published: Aug. 19, 2015

Language: Английский

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Fish inhabiting rice fields: Bioaccumulation, oxidative stress and neurotoxic effects after pesticides application

Ecological Indicators, Journal Year: 2020, Volume and Issue: 113, P. 106186 - 106186

Published: Feb. 19, 2020

The present study aimed to evaluate the biological effects triggered by application of a current-use mixture pesticides (the herbicide glyphosate, insecticide bifenthrin, BF, and fungicides azoxystrobin, AZ, cyproconazole, CYP) on two native fish (Markiana nigripinnis Astyanax lacustris) inhabiting rice field. We analyzed pesticide residues in water, sediment samples 21 days before after fumigation event. Additionally, organismic indices, oxidative stress neurotoxicity biomarkers at both sampling periods were compared. After fumigation, AZ CYP detected water samples, being also bioaccumulated species. A decreasing condition factor A. lacustris higher liver somatic index M. observed as well. Overall, results showed that, mixture, antioxidant mechanisms failed prevent damage gills nigripinnis. Meanwhile, different response: an inhibition defenses without tissue lipid damage. Furthermore, acetylcholinesterase activity spraying was significantly reduced brain muscle tissues Our show that pesticides, like CYP, pose health risks populations fields.

Language: Английский

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Heavy metal pollution and risk assessment by the battery of toxicity tests

Scientific Reports, Journal Year: 2020, Volume and Issue: 10(1)

Published: Oct. 6, 2020

Abstract The current study was carried out on dominant fish Oreochromis niloticus and water collected from the polluted Yamuna River, Agra, India. heavy metals in water, recorded as follows: Fe > Mn Zn Cu Ni Cr Cd all were found to be above prescribed limits. According metal pollution index, exposed muscle (49.86), kidney (47.68) liver (45.26) have been higher bioaccumulation. blood biochemical analysis of O. indicated significant increase activities aspartate aminotransferase (+ 343.5%), alkaline phosphatase 673.6%), alanine 309.1%), creatinine 494.3%) over reference. However, a decrease albumin (A): globulins (G) ratio (− 87.86%) observed. Similarly, also showed total leucocyte count 121%), differential count, respiratory burst 1175%), nitric oxide synthase 420%). histological examination tissue injury. Moreover, micronuclei (0.95%), shaped nuclei (1.2%), lobed (0.6%) along with DNA damage form mean tail length (20.7 µm) (16.5 observed . Potential health risk assessments based estimated daily intake, target hazard quotient, cancer risks associated consumption these contaminated fishes. In conclusion, present that exposure can alter immunological response; induce histopathological alterations studied fish. this or could serious impact human health.

Language: Английский

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Thermal acclimation in clownfish: An integrated biomarker response and multi-tissue experimental approach

Ecological Indicators, Journal Year: 2016, Volume and Issue: 71, P. 280 - 292

Published: July 21, 2016

Language: Английский

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From catchment to fish: Impact of anthropogenic pressures on gill histopathology

The Science of The Total Environment, Journal Year: 2016, Volume and Issue: 550, P. 972 - 986

Published: Feb. 4, 2016

Language: Английский

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