Die Interkalibrierung nach EG-Wasserrahmenrichtlinie — Neue Ergebnisse und Resümee

Birk, Sebastian; Bellack, Eva; Böhmer, Jürgen; Mischke, Ute; Schaumburg, Jochen; Schütz, Cornelia; Witt, Jan

doi:10.1365/s35147-013-0423-1

Cited by 4 publications

(2 citation statements)

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“…The study is mainly based on the data obtained during the second Joint Danube Survey (JDS) cruise that covers the entire navigable Danube from Swabia in South Germany to the Danube Delta in Romania (Liška, Wagner & Slobodnik, 2008). If the national assessment methods of two countries refer to different levels of human influence (D), the same status assessment scores (scaled 0-1) represent different levels of impairment (Birk & Bö hmer, 2007;modified). was an international river research expedition in 2007 that produced highly comparable information on the environmental quality of the Danube River. 1 On the importance of a common definition of near-natural reference conditions in intercalibration.…”

Section: Introductionmentioning

confidence: 99%

“…1 On the importance of a common definition of near-natural reference conditions in intercalibration. If the national assessment methods of two countries refer to different levels of human influence (D), the same status assessment scores (scaled 0-1) represent different levels of impairment (Birk & Bö hmer, 2007;modified). was an international river research expedition in 2007 that produced highly comparable information on the environmental quality of the Danube River.…”

Section: Introductionmentioning

confidence: 99%

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Harmonising the bioassessment of large rivers in the absence of near‐natural reference conditions – a case study of the Danube River

Birk

Kouwen²,

Willby

2012

Freshwater Biology

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Summary 1. International river catchments pose challenges for effective water resource management. Catchment‐wide strategies are often complicated by differences in national bioassessment and quality classification. Intercalibration efforts aim to harmonise these differences, but rely on the consistent delineation of near‐natural reference sites that are almost unavailable in today’s landscape, especially for large rivers. 2. We introduce the concept of alternative benchmarking that is based on the notion of aquatic communities at similar (low) levels of impairment associated with least‐disturbed conditions (LDC) as defined by abiotic criteria. Using data acquired during the second Joint Danube Survey, we defined LDC sites based on a multivariate gradient of anthropogenic pressures, mostly related to morphological deterioration, that spans the entire navigable Danube. 3. The river was subdivided into four stretches, each featuring homogeneous biological assemblages. Indirect gradient analysis revealed relationships between the pressure gradient and selected features of the macroinvertebrate and macrophyte community but not for diatoms or phytoplankton. 4. We identified biological metrics suitable for the quality classification of individual stretches or the entire river. Impoundment is the major hydromorphological alteration on the Danube but various metrics still responded significantly to differences in the morphological condition of sites not affected by impoundment. 5. A comparison of macroinvertebrate sampling techniques (airlift versus kick‐and‐sweep) revealed differences in how the acquired data reflect the effects of anthropogenic pressure. Biological metrics based only on kick‐and‐sweep sample data were insensitive to habitat deterioration in the heavily modified Upper Danube. 6. This study exemplifies the empirical approach of alternative benchmarking in intercalibration and offers practical solutions to some of the challenges of large river bioassessment.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Harmonising the bioassessment of large rivers in the absence of near‐natural reference conditions – a case study of the Danube River

Birk

Kouwen²,

Willby

2012

Freshwater Biology

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eDNA als neues Werkzeug für das Gewässermonitoring – Potenzial und Rahmenbedingungen anhand ausgewählter Anwendungsbeispiele aus Österreich

Schenekar

Schletterer

Weiss

2020

Österr Wasser- und Abfallw

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Zusammenfassung In den letzten Jahren wurden vermehrt DNA-basierte Methoden zur Unterstützung konventioneller Ansätze von Biodiversitätserhebungen vorgeschlagen. Hierbei wird der Verwendung von Umwelt-DNA (oder environmental DNA-eD-NA) ein besonders großes Potenzial zur Verbesserung von Biomonitorings zugeschrieben. Anhand von eDNA kann man mittels Einzelartansätzen wie qP-CRs gezielt Arten nachweisen, oder aber, mittels Metabarcoding die gesamte Artenzusammensetzung einer Zielgruppe beschreiben. In diesem Artikel geben wir einen kurzen Überblick über Potenzial und Rahmenbedingungen dieser Methoden und stellen drei kleine Pilotstudien von eDNA-Analysen in österreichischen Fließgewässern vor. Zwei Projekte testeten den Einsatz von eDNA-Metabarcoding-Analysen zur Erhebung der Fischfauna in Tiroler Gewässern, während in einer dritten Studie ein Test auf Anwesenheit der Europäischen Äsche in der Enns sowie im Johnsbach im Nationalpark Gesäuse evaluiert wurde. Des Weiteren werden die Vor-und Nachteile von eDNAbasierten Ansätzen im Vergleich mit konventionellen Methoden diskutiert.

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Die neue Oberflächengewässerverordnung

Heiß¹

2017

Wasser Abfall

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Die Interkalibrierung nach EG-Wasserrahmenrichtlinie — Neue Ergebnisse und Resümee

Cited by 4 publications

References 4 publications

Harmonising the bioassessment of large rivers in the absence of near‐natural reference conditions – a case study of the Danube River

Harmonising the bioassessment of large rivers in the absence of near‐natural reference conditions – a case study of the Danube River

eDNA als neues Werkzeug für das Gewässermonitoring – Potenzial und Rahmenbedingungen anhand ausgewählter Anwendungsbeispiele aus Österreich

Die neue Oberflächengewässerverordnung

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