Assessment of organic pollution effect considering differences between lotic and lentic stream habitats

Brabec, Karel; Zahrádková, Světlana; Němejcová, Denisa; Pařil, Petr; Kokeš, Jiří; Jarkovský, Jiří

doi:10.1023/b:hydr.0000025274.47757.85

Cited by 48 publications

(19 citation statements)

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“…No other taxa were found to be common for either stillwater muddy and torrential riffle and/or for muddy and riparian plant substrate. This finding is in a good agreement with the conclusions of Brabec et al (2004) who proved that the lotic and lentic habitats in a river differ in taxonomic composition, ecological traits and biotic indices of macrozoobenthos. On the other hand, 16 taxa were recorded as affined to both torrential and riparian mesohabitats, the majority of them belonging to the families Chironomidae and Naididae.…”

Section: Discussionsupporting

confidence: 92%

“…This pattern was more pronounced in water pollution determinants (saprobic index) than in the determinants of morphological habitat degradation (channelization). Significant relationships between abiotic (BOD, nutrients) and biotic (saprobic index of macrozoobenthos) indicators of organic enrichment were identified also by Brabec et al (2004). On the other hand, the morphological man-made modifications of the river channel were found to be the main factor negatively affecting lowland river macroinvertebrates and their biodiversity under conditions of homogenous (low) pollution loading (Horsák et al 2009).…”

Section: Discussionmentioning

confidence: 91%

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Macrozoobenthos response to environmental degradation in a heavily modified stream: Case study the Upper Elbe River, Czech Republic

Adámek

Orendt

Wolfram³

et al. 2010

Biologia

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Benthic macroinvertebrates are an important indicator of river health. However, their response upon water quality development downstream the pollution outlets considerably depends on the environmental habitat characteristics. Three successive stretches, each of them providing three different mesohabitats in stillwater (S), torrential (T) and riparian (R) zones were selected for evaluation of the impact of altered metapotamal river bed morphology (channelization) and chemical determinants of water quality on the Upper Elbe River. In downstream direction, the stretches are separated by weirs and characterized as a low polluted low modified natural stream (N), a low polluted channelized stream (C) and a channelized polluted stream (CP). Altogether, 111 benthic macroinvertebrate taxa were recorded in the Pardubice hotspot between Němčice and Přelouč. Despite different levels of stream bed and water quality degradation, micro-and mesohabitat characteristics appeared to be the most important factors determining the diversity of macrozoobenthos in riffle (substrate size structure) and in shoreline (macrophyte community composition and structure) mesohabitats. The diversity of macroinvertebrate communities was highest in riparian mesohabitats compared to stillwater and torrential ones. Saprobic indices increased in downstream direction, thus indicating the decline of water quality.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 91%

Macrozoobenthos response to environmental degradation in a heavily modified stream: Case study the Upper Elbe River, Czech Republic

Adámek

Orendt

Wolfram³

et al. 2010

Biologia

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“…In order to relate the measured environmental variables with macroinvertebrate community structure, defined in PCA components, Pearson correlations were performed (between site scores along the axes and environmental variable values). A set of metrics and index to assess quality in lotic ecosystems (see Brabec et al, 2004;Buffagni et al, 2004;Offenböck et al 2004) were computed for both sites over the study period (Table 2). The objective of those calculations was to detect temporal patterns.…”

Section: Methodsmentioning

confidence: 99%

Assessment of Temporary Streams: The Robustness of Metric and Multimetric Indices under Different Hydrological Conditions

Morais

Pinto

Guilherme

et al. 2004

Integrated Assessment of Running Waters in Europe

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The generalization of ecological results from temporary streams needs the study of those ecosystems across a broad scale of running waters, covering the geographical ecological constraints involved (e.g., precipitation, temperature and geology). For the particular situation of Mediterranean streams in Southern Europe, high changes in water level, with unpredicting flood events, represent an important factor determining the structure and function of Mediterranean streams. This variability, inducing accentuated changes in the macroinvertebrate community, tends to influence the assessment methodologies. A set of metrics commonly used in Europe to assess organic degradation (Shannon-Wiener index, evenness, richness, BBI, IBE, BMWP , ASPT , DSFI, EPT, number of Trichoptera families, percentage of Gasteropoda, Oligochaeta and Diptera) and a multimetric index (IM9) developed to assess organic degradation in southern siliceous Portuguese basins were tested to evaluate quality at two contrasting sites (one unimpaired and another impaired by an identified point source of pollution). The multimetric index (IM9) composed by: ASPT (average score per taxon); GOLD (one minus percentage of Gasteropoda, Oligochaeta and Diptera); and TRICF (number of Trichoptera families), was the most suitable assessment methodology. IM9 presented a quite stable temporal pattern from February in late winter until June in early summer, even under the effect of episodic floods. A stepwise regression showed that most of tested metrics were significantly related to environmental variables (soluble reactive phosphorous, dissolved inorganic nitrogen and dissolved oxygen). Only richness, IBE and BMWP were not significantly influenced by environmental variables. Future research must be done covering the complete gradient of organic degradation, including the extension of multimetric assessment methodologies to temporary streams located in other regions under different geological and climatic conditions.

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“…Merritt et al, 2002). Such composite trophic indices responded to organic pollution (Brabec et al, 2004;Pinto et al, 2004), periphyton cover, dissolved oxygen, sulphuric acid, sodium, potassium or conductivity , land use (Feld & Hering, 2007) and floodplain fragmentation (Paillex et al, 2007). Bö hmer et al (2004) eliminated an index of trophic integrity from a multimetric index because the trophic index 'fluctuated strongly, regardless of watercourse type and cause of impact ' (p. 222).…”

Section: Biological Traits and Multiple Stressors 97mentioning

confidence: 99%

Can biological invertebrate traits resolve effects of multiple stressors on running water ecosystems?

2010

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SUMMARY1. Accurately assessing the effects of multiple human-caused stressors on freshwater (and other) ecosystems is an essential step in the development of efficient decision support tools for environmental managers. Our objective is to review potentials and limitations of the use of biological traits as indicators (BTIs) of multiple stressor effects on running water (i.e. lotic) ecosystems. 2. Pioneers in ecology provided mechanistic explanations for responses of alternative biological traits to a given stressor and for the action of habitat harshness as a trait filter. These ideas were subsequently integrated in theoretical ecological constructs (e.g. Habitat Templet Concept) that form the basis of the BTI approach. 3. To resolve the effects of multiple stressors on running waters requires multiple traits of a biologically diverse group of organisms such as lotic invertebrates. To meet this goal, however, recently created databases on the biological traits of lotic invertebrates must be expanded and unified. 4. Addressing the technical implementation of the BTI approach, we illustrate that anticipated problems with phylogenetic trait syndromes are seemingly less serious in reality and that presence-absence data of genera and few sample replicates are sufficient for accurate trait descriptions of invertebrate communities. 5. Current trends in politics demand that biomonitoring tools be effective at large scales, i.e. large-scale trait patterns of natural communities (i.e. at reference conditions) should be relatively stable. The trait composition of natural invertebrate communities is relatively stable at the scale of Europe and North America because trait filters of natural lotic habitats act similarly across large biogeographical units. 6. The mechanistic actions of stressors on the biological traits of invertebrates should facilitate a priori predictions, but the complexity of potential trait responses makes such predictions sometimes difficult. 7. To illustrate potentials and limitations of BTIs to identify a given stressor acting exclusively (or primarily), we examine the (i) use of functional feeding groups to indicate the action of various stressors and (ii) trait responses to an indirectly acting stressor (discharge variation) and to a more directly acting stressor (near-bottom flow). If the excessive use of specific traits for the indication of too many different stressors is avoided and a given stressor acts directly on traits as a priori predicted, reliable interpretations of trait responses can be achieved. Thus, the BTI approach has the potential to inaugurate a new era in the biomonitoring of lotic (and other) ecosystems.

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Assessment of organic pollution effect considering differences between lotic and lentic stream habitats

Cited by 48 publications

References 0 publications

Macrozoobenthos response to environmental degradation in a heavily modified stream: Case study the Upper Elbe River, Czech Republic

Macrozoobenthos response to environmental degradation in a heavily modified stream: Case study the Upper Elbe River, Czech Republic

Assessment of Temporary Streams: The Robustness of Metric and Multimetric Indices under Different Hydrological Conditions

Can biological invertebrate traits resolve effects of multiple stressors on running water ecosystems?

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