A new evaluation technique of potamo-plankton for the assessment of the ecological status of rivers

Borics, Gábor; Várbíró, Gábor; Grigorszky, István; Krasznai, Enikő; Szabó, Sándor; Kiss, Keve Tihamér

doi:10.1127/lr/17/2007/465

Cited by 37 publications

(66 citation statements)

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“…Originally, functional groups were used to characterize standing water bodies, the number of the groups was 31, and each group was characterized by one to four algal species (Reynolds et al, 2002). Now the functional classification of phytoplankton has attracted the attention of many phytoplankton ecologists worldwide and it has been updated mainly by Padisák et al (2003, 2006), Callieri et al (2006, Devercelli (2006), Baranazarova & Lyashenko (2007), Borics et al (2007), Sarmento & Descy (2008), and Souza et al (2008). The total number of groups is 40 in the last updated version and the number of the representative taxa per each functional group varies from three to more than forty (Padisák et al, 2009).…”

Section: Application Of the New Hungarian Potamoplanktic Methodsmentioning

confidence: 99%

“…Therefore, evaluation of the elements of the phytoplankton assemblages was performed by estimating how far or how close these limnetic assemblages were to those types that can be considered as reference algal assemblages of the rivers (Borics et al, 2007). They focused on those environmental elements that are specific for rivers (short residence time), or are important from the environmental point of view (trophic state).…”

Section: Application Of the New Hungarian Potamoplanktic Methodsmentioning

confidence: 99%

“…Elaboration of the new potamoplanktic method needed evaluation of phytoplankton associations in rivers (Borics et al, 2007). Therefore, evaluation of the elements of the phytoplankton assemblages was performed by estimating how far or how close these limnetic assemblages were to those types that can be considered as reference algal assemblages of the rivers (Borics et al, 2007).…”

Section: Application Of the New Hungarian Potamoplanktic Methodsmentioning

confidence: 99%

“…For rivers the WFD does not consider it necessary to elaborate phytoplankton-based quality assessment methods because of the predominance of allochthonous organic matter over autochthonous primary production (Reynolds, 2000). Nevertheless, several studies (Descy et al, 1988;Kiss, 1994;Dokulil, 1996;Borics et al, 2007) indicate development of eutrophic or even hypertrophic phytoplankton assemblages in large lowland rivers, where phytoplankton provides a quantifiable measure of water quality degradation.…”

Section: Introductionmentioning

confidence: 96%

“…Recently, a new Hungarian evaluation technique was elaborated for the assessment of the water quality of rivers (Borics et al, 2007). The method is based on phytoplankton assemblages and has been tested with hundreds of samples from Hungarian rivers.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of water quality in a large lowland river (Narva, Estonia/Russia) using a new Hungarian potamoplanktic method

Piirsoo¹,

Päll²,

Tuvikene³

et al. 2010

Estonian J. Ecol.

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Phytoplankton is one of the four biological elements used for the assessment of the water quality of surface water bodies. In rivers phytoplankton-based assessment of water quality has not been conducted in Estonia up to now. The aim of the present study was to test a new Hungarian potamoplanktic method for the assessment of the water quality of the Narva River, a large river on the Estonian-Russian border. For testing the method, algal species in the phytoplankton of the Narva River were classified into functional groups. Then the Ecological Quality Ratio (EQR) was calculated and its value was compared with the corresponding values for different water quality classes given in the literature. The mean value of the EQR for the Narva River revealed seasonal variation: in most cases it indicated 'good' or 'excellent' quality classes in spring and summer and 'very bad' quality class in autumn. The median value for the vegetation period of 2001-2008 indicated 'moderate' quality class. Variation in the functional groups of phytoplankton and in the EQR values reflected the seasonal dynamics of phytoplankton and the impact of Lake Peipsi. Comparison of the results of the assessments made by using the phytoplankton EQR and benthic diatom indices revealed agreement between the two metrics in the summer period: both were sensitive to the water quality and indicated at least 'good' quality class.The new Hungarian method appears to be suitable for the assessment of water quality in this Estonian large river. However, the numerical boundaries of the EQR for different water quality classes should be specified in the future on the basis of a larger Estonian phytoplankton database.

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Section: Application Of the New Hungarian Potamoplanktic Methodsmentioning

confidence: 99%

Section: Application Of the New Hungarian Potamoplanktic Methodsmentioning

confidence: 99%

Section: Application Of the New Hungarian Potamoplanktic Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Assessment of water quality in a large lowland river (Narva, Estonia/Russia) using a new Hungarian potamoplanktic method

Piirsoo¹,

Päll²,

Tuvikene³

et al. 2010

Estonian J. Ecol.

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Using Phytoplankton to Assess the Trophic Status of German Rivers

Mischke

Venohr

Behrendt³

2011

International Review of Hydrobiology

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We introduce the German multi-metric assessment method PhytoFluss for large rivers, based on phytoplankton, which can be used to implement the European Water Framework Directive (WFD). First, we examined the response of chlorophyll a concentration to total phosphorus (TP) at 220 German river sites. Rivers could be assigned to one of four groups, based on the response curves: a) streams with high specific run-off (Rhine, Danube) had the lowest yield of chlorophyll a per unit of TP, followed by b) low yield in small lowland rivers (Trave, Stepenitz), c) medium-sized lowland rivers (Spree) and large central mountain rivers (Main) had intermediate yields of chlorophyll a, and d) streams with low specific run-off (Elbe, Weser) and Baltic tributaries (Penne, Warnow) had the highest yield of chlorophyll a per unit of TP. To define the five trophic status classes of phytoplankton biomass according the WFD, the chlorophyll a boundaries were derived from these response curves at the 75% percentile level. All selected sites were pre-classified with the combined trophic boundaries for TP and chlorophyll a to create the new four taxa composition metrics: The proportions of Chlorophytes, Cyanobacteria, or Pennales and of indicator taxa were selected as indicative parameters. When applying the final PhytoFluss method to 418 years of investigation from 150 German river sites, the percentages in each status according to the bio-component phytoplankton were: high 3%, good 19%, moderate 42%, poor 30%, and bad 5%. IntroductionIn the last three decades, eutrophication has replaced organic pollution as the dominant chemical pressure in large river systems in Europe. Irradiance can be sufficient to support sizeable in-stream production by algae and macrophytes, which frequently colours the large river of Europe green or brown (BUCKA, 2000(BUCKA, , 2002BEHRENDT and OPITZ, 2001;KARRASCH et al., 2001;NEAL et al., 2006). Assessment of the trophic state of rivers and streams should include heterotrophic and autotrophic production according to DODDS (2006DODDS ( , 2007, because both can be essential to determine of goals for management of stream biotic integrity. DODDS (2007) provided a stoichiometric approach to factors that control trophic state in rivers and an approach to detect baseline nutrient levels. Still, there is no com- www.revhydro.com mon method to assess the response of all autotrophic organisms to eutrophication in biomass and composition. Macrophytes, benthic algal biomass and phytoplankton are the main autotrophic organism groups requested by the Water Framework Directive of the EUROPEAN COMMISSION (EC 2000) to be assessed to determine the ecological status of rivers. Up to now most European countries have focused on benthic diatoms (KELLY et al., 2008;ROTT et al., 1999) or also on macrophytes (SCHAUMBURG et al., 2004). There is only one river assessment approach by BORICS et al. (2007) based on composition parameters of phytoplankton developed in parallel to our study.In streams, more excessive than in lakes, a co...

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Spatial Pattern of Phytoplankton Based on the Morphology‐Based Functional Approach along a River–Floodplain Gradient

Mihaljević

Stević

Špoljarić

et al. 2014

River Research & Apps

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Current efforts to yield an appropriate method that would simplify the use of phytoplankton in the ecological evaluation of freshwaters resulted in different approaches based on clustering phytoplankton organisms. In this study, we applied the morphology-based functional group (MBFG) concept to determine the spatial changes of phytoplankton in the natural riverine floodplain of the alluvial reaches of the Danube River along the horizontal gradient from the river towards the floodplain habitats.The obtained results showed that the magnitude of environmental changes depended on alternations in hydrological variables (hydropattern and water level) that influenced changes in the physical and chemical conditions. High-intensity flood pulses caused environmental homogenizations and nitrate enrichment of the floodplain habitats. Phytoplankton dynamics were strongly associated with the environmental changes, and using the MBFG approach, two basic hydrological conditions were identified: inundation phase dominated by diatoms (GVI) and isolation phase dominated by filamentous cyanobacteria (GIII). Total diatom biomass decreased along the floodplain gradient with a diminishing of physical constraints, and site-specific variables became more important in favouring diatom assemblages. The different response of cyanobacterial species to mixing regime was of particular significance for species successions during bloom period. Altogether, classifying very diverse diatoms (centrics and pennates and planktonic and benthic) and cyanobacterial taxa into single groups represents a weakness of the MBFG approach, which might make it impossible to reflect all the ecological differences governed by environmental constraints along river-floodplain gradients.

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A new evaluation technique of potamo-plankton for the assessment of the ecological status of rivers

Cited by 37 publications

References 0 publications

Assessment of water quality in a large lowland river (Narva, Estonia/Russia) using a new Hungarian potamoplanktic method

Assessment of water quality in a large lowland river (Narva, Estonia/Russia) using a new Hungarian potamoplanktic method

Using Phytoplankton to Assess the Trophic Status of German Rivers

Spatial Pattern of Phytoplankton Based on the Morphology‐Based Functional Approach along a River–Floodplain Gradient

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