Effects of pesticides on community structure and ecosystem functions in agricultural streams of three biogeographical regions in Europe

Schäfer, Ralf B.; Caquet, Thierry; Siimes, Katri; Mueller, Ralf; Lagadic, Laurent; Liess, Matthias

doi:10.1016/j.scitotenv.2007.04.040

Cited by 337 publications

(266 citation statements)

References 40 publications

Supporting

Mentioning

234

Contrasting

Unclassified

Order By: Relevance

“…This response was consistent with that shown in other tropical streams where the removal of taxa from sites subject to high-levels of anthropogenic stress resulted in a reduction of metric scores that were originally designed to respond to organic pollution (Thorne & Williams, 1997, Helson & Williams, 2013, and with studies in temperate streams which found that sedimentation significantly influenced families intolerant of organic stress (Sutherland et al, 2012). Given the nature of activities impacting downstream locations, which have been related to changes in macroinvertebrate assemblages elsewhere (Harding et al, 2000, Castillo et al, 2006, Schäfer et al, 2007, it would be surprising if anthropogenic biological alteration had not occurred. However, the extent to which biological change corresponds with natural and/or anthropogenic environmental change in the silicate streams remains unclear.…”

Section: Problems Of Collinearitysupporting

confidence: 81%

Challenges using extrapolated family-level macroinvertebrate metrics in moderately disturbed tropical streams: a case-study from Belize

2017

View full text Add to dashboard Cite

Family-level biotic metrics were originally designed to rapidly assess gross organic pollution effects, but came to be regarded as general measures of stream degradation. Improvements in water quality in developed countries have reignited debate about the limitations of family-level taxonomy to detect subtle change, and is resulting in a shift back towards generic and species-level analysis to assess smaller effects. Although the scale of pollution characterizing past condition of streams in developed countries persists in many developing regions, some areas are still considered to be only moderately disturbed. We sampled streams in Belize to investigate the ability of familylevel macroinvertebrate metrics to detect change in stream catchments where less than 30% of forest had been cleared. Where disturbance did not co-vary with natural gradients of change, and in areas characterized by low intensity activities, none of the metrics tested detected significant change, despite evidence of environmental impacts. We highlight the need for further research to clarify the response of metrics to disturbance over a broader study area that allows replication for confounding sources of natural variation. We also recommend research to develop more detailed understanding of the taxonomy and ecology of Neotropical macroinvertebrates to improve the robustness of metric use.

show abstract

Section: Problems Of Collinearitysupporting

confidence: 81%

Challenges using extrapolated family-level macroinvertebrate metrics in moderately disturbed tropical streams: a case-study from Belize

2017

View full text Add to dashboard Cite

show abstract

“…For six of the sites, the %SPEAR pesticides abundance was even below 10 suggesting a very strong impact of pesticides on the macroinvertebrate communities. Among the previous studies reporting SPEAR values from 112 different streams from different locations in the world (primarily headwater streams), less than 10% of the sites were characterised by %SPEAR pesticides values below 10 (compare McKnight et al, 2012;Rasmussen et al, 2012;Schletterer et al, 2010;Schäfer et al, 2007;2011;von der Ohe et al, 2007). Despite much weaker correlations with the DCA axis scores, other qualitative indicators of ecological quality (EPT abundance, DSFI and LIFE scores) all obtained very low values indicating strong ecological impairment in the studied headwater streams.…”

Section: Characterisation Of Macroinvertebrate Communitiesmentioning

confidence: 77%

A catchment scale evaluation of multiple stressor effects in headwater streams

Rasmussen

McKnight

Loinaz

et al. 2013

Science of The Total Environment

View full text Add to dashboard Cite

Mitigation activities to improve water quality and quantity in streams as well as stream management and restoration efforts are conducted in the European Union aiming to improve the chemical, physical and ecological status of streams. Headwater streams are often characterised by impairment of hydro-morphological, chemical, and ecological conditions due to multiple anthropogenic impacts. However, they are generally disregarded as water bodies for mitigation activities in the European Water Framework Directive despite their importance for supporting a higher ecological quality in higher order streams.We studied 11 headwater streams in the Hove catchment in the Copenhagen region. All sites had substantial physical habitat and water quality impairments due to anthropogenic influence (intensive agriculture, urban settlements, contaminated sites and low base-flow due to water abstraction activities in the catchment). We aimed to identify the dominating anthropogenic stressors at the catchment scale causing ecological impairment of benthic macroinvertebrate communities and provide a rank-order of importance that could help prioritising mitigation activities. We identified numerous chemical and hydromorphological impacts of which several were probably causing major ecological impairment, but we were unable to provide a robust rank-ordering of importance suggesting that targeted mitigation efforts on single anthropogenic stressors in the catchment are unlikely to have substantial effects on the ecological quality in these streams.The SPEcies At Risk (SPEAR) index explained most of the variability in the macroinvertebrate community structure, and notably, SPEAR index scores were often very low (< 10 % SPEAR abundance). An extensive re-sampling of a subset of the streams provided evidence that especially insecticides were probably essential contributors to the overall ecological impairment of these streams.Our results suggest that headwater streams should be considered in future management and mitigation plans. Catchment-based management is necessary because several anthropogenic stressors exceeded problematic thresholds, suggesting that more holistic approaches should be preferred.

show abstract

“…A contaminação por agrotóxico nos diferentes compartimentos, terrestre e aquático, tem sido amplamente reportada na literatura (FILIZOLA et al, 2002;VEIGA et al, 2006;SCHÄFER et al, 2007) e o escoamento superficial de áreas agrícolas é considerado um dos principais meios de contaminação das águas superficiais (HUBER;BACH e FREDE, 1998;LERCH e BLANCHARD, 2003).…”

Section: Introductionunclassified

O Efeito Da Toxicidade Aguda Do Herbicida Atrazina Para O Cladócero Moina Minuta Hansen, 1899

Moreira¹,

Mansano²

2013

ANAP

View full text Add to dashboard Cite

Odete Rocha 3 RESUMO: Um dos maiores problemas relacionados com o uso de agrotóxicos é que a maior parte dos produtos aplicados não chega a atingir os organismos-alvo, sendo carreada pelas águas das chuvas, percolando solos ou sendo volatilizados, desta forma representando uma ameaça aos ecossistemas como um todo, principalmente os aquáticos. A utilização de testes ecotoxicológicos, para a análise dos efeitos tóxicos das substâncias químicas presentes nos agrotóxicos em diferentes níveis de organização dos ecossistemas, tem se tornado uma ferramenta cada vez mais importante nas avaliações de impacto . Ao comparar a CE 50 obtida para M. minuta com aquelas previamente estabelecidas para diferentes organismos aquáticos expostos ao herbicida atrazina, observa-se que esta espécie foi na maior parte das vezes mais sensível à atrazina do que as outras espécies testadas. Os resultados obtidos são promissores tendo em vista a sensibilidade observada para autilizada como organismo-teste. Além disso, pelo fato de M. minuta ser uma espécie facilmente encontrada em corpos de água em todo o Brasil este cladócero poderá ser um organismo alvo ferramenta promissora na avaliação da toxicidade deste e de outros agrotóxicos, visando a obtenção de subsídios para ações voltadas à preservação da diversidade da biota aquática.Palavras-chave: Cladocera. Atrazina. Toxicidade.

show abstract

Effects of pesticides on community structure and ecosystem functions in agricultural streams of three biogeographical regions in Europe

Cited by 337 publications

References 40 publications

Challenges using extrapolated family-level macroinvertebrate metrics in moderately disturbed tropical streams: a case-study from Belize

Challenges using extrapolated family-level macroinvertebrate metrics in moderately disturbed tropical streams: a case-study from Belize

A catchment scale evaluation of multiple stressor effects in headwater streams

O Efeito Da Toxicidade Aguda Do Herbicida Atrazina Para O Cladócero Moina Minuta Hansen, 1899

Contact Info

Product

Resources

About