Water quality variables and pollution sources shaping stream macroinvertebrate communities

Berger, Elisabeth; Haase, Peter; Kuemmerlen, Mathias; Leps, Moritz; Schäfer, Ralf B.; Sundermann, Andrea

doi:10.1016/j.scitotenv.2017.02.031

Cited by 92 publications

(47 citation statements)

References 60 publications

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“…Clean water is an essential requirement for the establishment and maintenance of ecological integrity (Berger et al, 2017). Water resources provide valuable food through aquatic life cycle, irrigation for agriculture productions and animal watering (Bostanmaneshrad et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

“…According to international standardized protocol using a triangular D-frame kick hand net with a 250 μm mesh size in all the available habitat types (multi habitat sampling procedure), such as riffles, macrophytes, pools and bedrock collectively for 5 min per site (Barbour et al, 1999). At each sampling site, macroinvertebrates were taken by submerging the hand net in the river at different depths , sweeping and kicking at each location, covered both vegetation and open-water areas to incorpo-rated habitat heterogeneity and benthic substratum were dislodge to any attached macro invertebrates (Berger et al, 2017). After the macroinvertebrates sampling were collected and transferred into a bowel and washed with sufficient amount of water were added and the supernatant was poured onto a sieve to retain the macroinvertebrates while removed the mud .This was repeated until all the macroinvertebrates separated from mud .Then preserving in 95% ethanol After all samples collected then placed in an insulating ice packs cooled boxes and transported to BDU Environmental Sciences and Technology laboratories with due care for chemical and biological analyses and water samples stored in a refrigerator at 4˚C until analysis…”

Section: Macroinvertebrate Samplesmentioning

confidence: 99%

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Influence Of Urbanization On Ecological Status Of River In Amhara Region, Ethiopia 2019

2019

Preprint

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IntroductionUrbanization is one of the main causes for environmental problems due to the introduction of pollutants into water bodies. Lahi is crossing fintoselam. This river has long been used for a variety of purposes including source of public water supply, small scale irrigation, bathing, washing, animal watering, sand and stone dredging and recreation.Objective: To assess the influence of Finoteselam town on ecological status of Lahi river Methods: The assessment were assessed using physicochemical parameters, physical habitat assessment, biotic indices /metrics , human activity by observation as well as macroinvertabretes samples from eleven sampling sites coded S1to S11 along the river using the standard procedures. The assessments were involved in-situ measurements and collection of water samples in April 2019 then, analyzed the water samples in laboratory. Results:The biological analysis reveals a notable reduction of the diversity macroinvertabrates in the downstream direction where the minimum was at midstream sites .Upstream has significantly better macroinvertabrates assemblage than midstream(p-value<0.05).Physical habitat evaluation scores varied from 43 at S8 to173 at S1 and relatively lower score were recorded at midstream sites. Low % of Ephemeroptera, Plecoptera and Trichoptera with high family biotic index and high % of Diptera with low biological monitoring working party also indicated water ecology deteriorated mainly at midstream sites. Multivariate analysis of classical analysis, canonical correspondence analysis and none metric multidimensional scaling also indicated ecological deterioration at midstream sites mainly at S5 , S6,S7 and S8. Conclusion:Midstream was relatively more polluted than upstream due to influence of pollutant from Finoteselam town. The ecological status of upstream segments of the river is very good with slight organic pollutions, and at midstream is poor and significant degree of organic pollutions; whereas the status of the downstream is fair with fairly substantial water pollution showing moderate ecological disturbance. In general, midstream the sampling stations show the deterioration in water ecology and thus necessitated a need for mitigation measure to save the Lahi.

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Section: Discussionmentioning

confidence: 99%

Section: Macroinvertebrate Samplesmentioning

confidence: 99%

Influence Of Urbanization On Ecological Status Of River In Amhara Region, Ethiopia 2019

2019

Preprint

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“…LASSO has shown more reliability than stepwise methods for variable selection in ecology applications (Elith & Graham, 2009). Recent applications of the LASSO method include modelling stream health using indices based on macroinvertebrate assemblages (Berger et al, 2017;Kaelin & Altermatt, 2016) and distributions of freshwater fish species (Huang & Frimpong, 2015;Huang, Frimpong, & Orth, 2016 (Aguiar, Ferreira, & Pinto, 2002;Beasley & Kneale, 2003;Magalhaes, Batalha, & Collares-Pereira, 2002), variation partitioning (Peres-Neto, Legendre, Dray, & Borcard, 2006), and multiscale ordination (Wagner, 2004). Further details regarding ordination techniques and spatial analysis of ecological data can be found in Borcard et al (2011), Kent (2006), Legendre and Legendre (2012), and Zuur, Ieno, and Smith (2007).…”

Section: Shrinkage Methodsmentioning

confidence: 99%

A review of macroinvertebrate‐ and fish‐based stream health modelling techniques

Hernandez‐Suarez

Nejadhashemi

2018

Ecohydrology

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During the last three decades, explaining cause-effect relationships between natural and anthropogenic disturbances with measures of stream health have motivated the growing application of statistical, machine learning, and soft computing methods.The aim of this review is to provide insight into the most widely used methods for predicting biological variables based on macroinvertebrate and fish species in riverine ecosystems. Therefore, we describe several methods including multiple linear regression, generalized linear models, generalized additive models, boosted regression trees, random forests, artificial neural networks, fuzzy logic-based, and Bayesian belief networks along with recent applications of these. Moreover, issues regarding variable selection, model interpretability, ensemble modelling, and model evaluation and overfitting are discussed. Recent advances have suggested the need for integrated modelling systems to enhance the predictive ability and improve interpretability.However, trade-offs between model complexity and accuracy demand research efforts in uncertainty quantification/propagation in model ensembles. Additionally, models should be perceived as complementary tools that require further validation with field measurements. Therefore, a consensus regarding monitoring and modelling practices for stream health applications is recommended.

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“…The degradation of river ecosystems caused by salinization has important implications for water management. For example, in Europe the elevated salt concentrations in many rivers [8,71] could prevent them from reaching the good ecological status demanded by the European Water Framework Directive [72]. Halle & Mü ller [73] suggested that Cl 2 concentrations as low as .…”

Section: Management Implicationsmentioning

confidence: 99%

Lost in translation: the German literature on freshwater salinization

Schulz

Cañedo‐Argüelles

2018

Phil. Trans. R. Soc. B

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Water quality variables and pollution sources shaping stream macroinvertebrate communities

Cited by 92 publications

References 60 publications

Influence Of Urbanization On Ecological Status Of River In Amhara Region, Ethiopia 2019

Influence Of Urbanization On Ecological Status Of River In Amhara Region, Ethiopia 2019

A review of macroinvertebrate‐ and fish‐based stream health modelling techniques

Lost in translation: the German literature on freshwater salinization

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