Bioindication in Norwegian rivers using non-diatomaceous benthic algae: The acidification index periphyton (AIP)

Schneider, Susanne C.; Lindstrøm, E.-A.

doi:10.1016/j.ecolind.2009.02.008

Cited by 41 publications

(36 citation statements)

References 19 publications

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“…We calculated the non-diatom indices for trophic status (PIT) and acid conditions (AIP) applied in Norway (Schneider & Lindstrøm, 2009;2011), the diatom acid conditions indices applied in Sweden (ACID; Andrén & Jarlman, 2008) and the UK (DAM; Juggins & Kelly, 2012), as well as the three most widely applied diatom indices for nutrient concentration/general pollution in Europe, i.e. the IPS (Coste in Cemagref, 1982), TDI (Kelly et al, 2008), and TI (Rott et al, 1999 conditions.…”

Section: Indicesmentioning

confidence: 99%

“…the IPS (Coste in Cemagref, 1982), TDI (Kelly et al, 2008), and TI (Rott et al, 1999 conditions. To calculate a reliable AIP index, at least three indicator taxa need to be present at a sampling site (see Schneider & Lindstrøm, 2009;2011 for details on PIT and AIP indices and reliability). Only reliable PIT and AIP indices (52 for PIT, 47 for AIP, respectively) were used in our study.…”

Section: Indicesmentioning

confidence: 99%

“…For some genera of filamentous green algae whose vegetative forms cannot be determined to species level (e.g. Spirogyra Link or Mougeotia C.Agardh) categories which are based mainly on filament width were used (see Schneider & Lindstrøm (2009;2011) for further details). The same taxonomic levels were used consistently for analysis of all sites in our study.…”

Section: Indicesmentioning

confidence: 99%

“…With the exception of Microspora abbreviata (Rabenhorst) Lagerheim, all taxa indicative of nutrient rich conditions with a PIT ≥ 10 have an AIP index above 7 (Fig. 3a), corresponding to a pH optimum above 7 (Schneider & Lindstrøm, 2009) A total of 418 diatom taxa have both TDI and DAM indicator values and consequently are used in the UK for eutrophication and acidification assessment. The general picture is the same as described above for the non-diatom benthic algae, i.e.…”

Section: Species Specific Nutrient and Ph Indicator Valuesmentioning

confidence: 99%

“…Indices based on speciescomposition of non-diatom benthic algae have been developed for trophic status (periphyton index of trophic status PIT, Schneider & Lindstrøm, 2011) and acid conditions (acidification index periphyton AIP, Schneider & Lindstrøm, 2009) for rivers in Norway. Likewise, diatom based indices for nutrients/general pollution (Indice de Polluo-sensibilité Spécifique IPS (Coste in Cemagref, 1982) and acid conditions (ACID, Andrén & Jarlman, 2008) are used in Swedish rivers, while in the UK, the Trophic Diatom Index (TDI, Kelly et al, 2008) and the Diatom Acidification Metric (DAM, Juggins & Kelly, 2012) are used.…”

Section: Introductionmentioning

confidence: 99%

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Interactions between pH and nutrients on benthic algae in streams and consequences for ecological status assessment and species richness patterns

Schneider

Kahlert

Kelly³

2013

Science of The Total Environment

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Eutrophication and acidification are among the major stressors on freshwater ecosystems in northern Europe and North America, but possible consequences of interactions between pH and nutrients on ecological status assessment and species richness patterns have not previously been assessed. Using data from 52 river sites throughout Norway, we investigated the combined effects of pH and nutrients on benthic algae assemblages, specifically 1) taxaspecific couplings between nutrient and acidity traits, 2) the degree of consistency between different biotic indices, separately for nutrients and acid conditions, 3) the impact of pH on nutrient indices and phosphorus on indices of acid conditions, and 4) the impact of pH and phosphorus supply on diatom and non-diatom taxon richness. We found that 1) acid-tolerant taxa are generally associated with nutrient-poor conditions, with only a few exceptions; this is probably more a consequence of habitat availability than reflecting true ecological niches; 2) correlation coefficients between nutrient indices and TP, as well as acid conditions indices and pH were barely affected when the confounding factor was removed; 3) the association of acid-tolerant taxa with nutrient-poor conditions means that the lowest possible nutrient index at a site, as indicated by benthic algae, is lower at acid than at circumneutral sites. Although 2 this may be an artefact of the datasets from which taxa-specific indicator values were derived, it could lead to a drift in nutrient indices with recovery from acidification; 4) the response of non-diatom taxon richness follows a complex pattern with a synergistic interaction between nutrient supply and pH. In contrast, diatom richness follows a simple additive pattern; this suggests structural differences between diatoms and non-diatom benthic algae in their response to nutrient supply and pH; diatom taxon richness tended to increase with nutrient supply, while non-diatom richness decreased.

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Section: Indicesmentioning

confidence: 99%

Section: Indicesmentioning

confidence: 99%

Section: Indicesmentioning

confidence: 99%

Section: Species Specific Nutrient and Ph Indicator Valuesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Interactions between pH and nutrients on benthic algae in streams and consequences for ecological status assessment and species richness patterns

Schneider

Kahlert

Kelly³

2013

Science of The Total Environment

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Taxonomic study of the genus Chamaesiphon (Chroococcales: Cyanoprokaryota) reported from India with two new distributional records

Das

2015

Feddes Repertorium

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There were only 9 taxa of Chamaesiphon A. Braun & Grunow, reported so far from India. This includes 6 species and 3 varieties. In the present study, two species of genus Chamaesiphon i.e. C. amethystinus and C. polonicus were reported from the Eastern Himalayas, as new records from India. Further, a taxonomic key to the Indian taxa of the genus Chamaesiphon along with their distribution in India as well as the globe have been provided. The taxonomic status of two endemic species was also evaluated. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Customs, habits, and traditions: the role of nonscientific factors in the development of ecological assessment methods

Kelly¹,

Schneider

King³

2015

WIREs Water

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A large number of new ecological assessment tools have been developed in Europe in response to the obligations imposed on Member States by the Water Framework Directive. These have been extensively evaluated and compared to ensure consistent application of this legislation across the European Union. In this essay, we suggest that part of the variation between national approaches reflects differences in the customs, habits, and traditions of the Member States. Using phytobenthos (benthic algae) as an example, we show how the initial selection of a method may, itself, generate an infrastructure that makes it harder for an organization to change to an alternative method in the future. Differences in academic tradition around Europe, exemplified by the strong tradition of teaching systematic biology in central Europe, can lead to differences in the types of method that are adopted that cannot be explained wholly by their effectiveness as measures of ecological status. This focus on national differences in assessment, however, needs to be set in context in a wider debate about the effectiveness of water management regimes, if the objectives of the Water Framework Directive are to be achieved.

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Bioindication in Norwegian rivers using non-diatomaceous benthic algae: The acidification index periphyton (AIP)

Cited by 41 publications

References 19 publications

Interactions between pH and nutrients on benthic algae in streams and consequences for ecological status assessment and species richness patterns

Interactions between pH and nutrients on benthic algae in streams and consequences for ecological status assessment and species richness patterns

Taxonomic study of the genus Chamaesiphon (Chroococcales: Cyanoprokaryota) reported from India with two new distributional records

Customs, habits, and traditions: the role of nonscientific factors in the development of ecological assessment methods

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