Eine erneute Revision des Saprobiensystems ‐ weshalb und wozu?

Friedrich, G.; Herbst, V.

doi:10.1002/aheh.200300518

Cited by 43 publications

(42 citation statements)

References 2 publications

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“…Observations of taxa restricted to polluted or unpolluted locations led to the classification of taxa based on the empirically defined trait of pollution sensitivity, thereby providing the first trait-based assessment of stream condition. Although the Saprobien System is not used widely now (Friedrich 1990), the notion of using organism tolerance to assess environmental conditions underpins many current biomonitoring methodologies.…”

Section: A Brief History Of Traits In Biomonitoringmentioning

confidence: 99%

Incorporating traits in aquatic biomonitoring to enhance causal diagnosis and prediction

Culp

Armanini

Dunbar

et al. 2011

Integr Envir Assess & Manag

130

111

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The linkage of trait responses to stressor gradients has potential to expand biomonitoring approaches beyond traditional taxonomically based assessments that identify ecological effect to provide a causal diagnosis. Traits-based information may have several advantages over taxonomically based methods. These include providing mechanistic linkages of biotic responses to environmental conditions, consistent descriptors or metrics across broad spatial scales, more seasonal stability compared with taxonomic measures, and seamless integration of traits-based analysis into assessment programs. A traits-based biomonitoring approach does not require a new biomonitoring framework, because contemporary biomonitoring programs gather the basic site-by-species composition matrices required to link community data to the traits database. Impediments to the adoption of traits-based biomonitoring relate to the availability, consistency, and applicability of existing trait data. For example, traits generalizations among taxa across biogeographical regions are rare, and no consensus exists relative to the required taxonomic resolution and methodology for traits assessment. Similarly, we must determine if traits form suites that are related to particular stressor effects, and whether significant variation of traits occurs among allopatric populations. Finally, to realize the potential of traits-based approaches in biomonitoring, a concerted effort to standardize terminology is required, along with the establishment of protocols to ease the sharing and merging of broad, geographical trait information.

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Section: A Brief History Of Traits In Biomonitoringmentioning

confidence: 99%

Incorporating traits in aquatic biomonitoring to enhance causal diagnosis and prediction

Culp

Armanini

Dunbar

et al. 2011

Integr Envir Assess & Manag

130

111

View full text Add to dashboard Cite

show abstract

“…To characterize the trophic range of the species a 20-points-distribution was used (see also FRIEDRICH, 1990). The allocation of the points in the trophic classes was undertaken according to the PSW-values calculated at the macrophyte patches.…”

Section: Determination Of the Indicator Value And Weighting Factormentioning

confidence: 99%

The Trophic Index of Macrophytes (TIM) – a New Tool for Indicating the Trophic State of Running Waters

Schneider¹,

Melzer²

2003

International Review of Hydrobiology

138

117

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In running waters, apart from structural degradation, nutrient input becomes increasingly important. To investigate the indicator values of as many species of submerged macrophytes as possible numerous samples of the sediment within macrophyte stands and the overlying water were taken in running waters throughout Bavaria, Germany. To develop the Trophic Index of Macrophytes (TIM), the concentrations of soluble reactive phosphorus of both the water body and the sediment pore water were used. Based on a weighted sum of the SRP-concentrations of the water body and the sediment pore water, indicator values were determined for a total of 49 species of submerged macrophytes. A detailed method is described on how and depending on which preconditions the trophic state of running waters can be determined by the TIM. An example of the TIM in the stream Rotbach is given. It shows that the TIM is a useful means to detect differences in the phosphorus loading of running waters.

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“…Weighting factors were deduced from the so-called "tolerance" of the species (see also FRIEDRICH 1990). Indicator values and weighting factors were calculated for a total of 49 species of submerged macrophytes (Table 3).…”

Section: The Tim: a Tool For Indicating The Trophic State Of Running mentioning

confidence: 99%

“…As a measure for the accuracy of the indication the so-called rate of scatter is used (FRIEDRICH 1990). Table 2).…”

Section: The Tim: a Tool For Indicating The Trophic State Of Running mentioning

confidence: 99%

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Macrophytes as bioindicators

Köhler¹,

Schneider²

2003

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Submerged macrophytes respond to changes in the nutrient concentrations in their environment. In contrast to diatoms e.g., submerged macrophytes are capable of taking up nutrients from both the sediment pore water and the overlying water. Therefore, macrophytes can provide a more comprehensive assessment of river ecosystems. Two methods using submerged macrophytes to assess and monitor changes in the nutrient status of running waters are described. General InformationAt the first Hohenheim Workshop on Bioindikation (1995) the term "Bioindicator" was defined by ARNDT et al. (1996): "Bioindicators are organisms or communities of organisms, which react to environmental influences by alterations of their life functions and/or by their chemical composition. Thereby it is possible to draw conclusions concerning their environmental conditions."This definition replaced a previous one, which was more constrained and more related to toxic substances: "Bioindicators are organisms or communities of organisms, which react to 1 University of Hohenheim, Institute of Landscape and Plant Ecology (320), D -70593 Stuttgart, Germany 2 Limnologische Station der TU München, Hofmark 3, D -82393 Iffeldorf; e-mail: susi@limno.biologie.tumuenchen.de 2 pollution by alterations of their life functions and/or accumulate the noxious substance" (ARNDT et al. 1987).The new definition agrees more closely to one by ELLENBERG (in KOHLER 1978). In this more concise definition not only toxic effects but also aspects of habitat are included. In this sense the ecological groups of species sensu ELLENBERG (1996) and the indicator values of ELLENBERG et al. (1992) are representing bioindicators.Bioindicators, including aquatic macrophytes, can be used in three ways for the assessment of environmental factors and environmental impacts (ARNDT et al. 1987, KOHLER 1982. IndicatorsIndicator plants may be individual species, groups of species or communities, which provide information on the status of an ecosystem. MonitorsMonitor plants allow for qualitative and quantitative assessments of toxic effect in an environment. Reaction indicators show an impact by visible symptoms and/or by other physiological reactions (e.g. activity of photosynthesis, respiration). Accumulation indicators accumulate toxic substances from the environment: passive monitors are collected from their natural habitat, active monitors are placed in the respective environment under investigation. Test species3 test species are used under controlled environmental conditions in the laboratory to indicate the influence of toxic substances.This study focuses on macrophytic indicators of trophic conditions in different river reaches.The importance of macrophytes as trophic indicators for running waters of low and high carbonate content in river ecosystems which had been oligotrophic in the past was demonstrated by KOHLER et al. (1973KOHLER et al. ( , 1974KOHLER et al. ( , 1992 and MONSCHAU-DUDENHAUSEN (1982). Ecological indicator groups could be found on the basis of the distributi...

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Eine erneute Revision des Saprobiensystems ‐ weshalb und wozu?

Cited by 43 publications

References 2 publications

Incorporating traits in aquatic biomonitoring to enhance causal diagnosis and prediction

Incorporating traits in aquatic biomonitoring to enhance causal diagnosis and prediction

The Trophic Index of Macrophytes (TIM) – a New Tool for Indicating the Trophic State of Running Waters

Macrophytes as bioindicators

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