Person:
Arle, Jens

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Arle

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Jens

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Deutschland, Umweltbundesamt, Fachgebiet II.2.4-Binnengewässer

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  • Vorschaubild
    Veröffentlichung
    Versauerungsmonitoring in deutschen Gewässern - Trends und Perspektiven
    (Umweltbundesamt, 2019) Arle, Jens; Deutschland. Umweltbundesamt. Fachgebiet II.2.4-Binnengewässer
    40 Jahre Genfer Luftreinhaltekonvention: Das Übereinkommen über weiträumige grenzüberschreitende Luftverunreinigung (engl. Convention on Long-Range Transboundary Air Pollution) der UNECE (United Nations Economic Commission for Europe, dt. Wirtschaftskommission der UN für Europa), auch bekannt als Genfer Luftreinhaltekonvention, wurde am 13. November 1979 in Genf beschlossen. 51 Parteien haben die Konvention unterzeichnet, u.a. alle EU-Mitgliedstaaten, die EU-Kommission, viele osteuropäische und zentralasiatische Staaten sowie die USA und Kanada. Das Übereinkommen wurde durch acht Protokolle konkretisiert. Quelle: http://www.umweltbundesamt.de/
  • Veröffentlichung
    Weißstorch und Mensch
    (2017) Arle, Jens; Boehmer, Winfried; Dziewiaty, Krista; Einhenkel-Arle, Doreen; Heyna, Jörg
  • Vorschaubild
    Veröffentlichung
    Waters in Germany
    (2017) Arle, Jens; Blondzik, Katrin; Claussen, Ulrich; Duffek, Anja; Grimm, Sabine; Hilliges, Falk; Kirschbaum, Bernd; Kirst, Ingo; Koch, Dietmar; Koschorreck, Jan; Lepom, Peter; Leujak, Wera; Mohaupt, Volker; Naumann, Stephan; Rechenberg, Jörg; Schilling, Petra; Ullrich, Antje; Wellmitz, Jörg; Werner, Stefanie; Wolter, Rüdiger; Deutschland. Umweltbundesamt
    Since 2016, there are new legal requirements for the assessment for nutrients and substances of the waters in Germany. New assessment procedures for hydromorphology were developed. These assessment instruments are described in the brochure "Waters in Germany: Status and Assessment". The results of the assessment clarify the still open problems in water protection. The long time series of data for nitrate and phosphorus document the development of the nutrient load of groundwater, rivers, lakes and the North Sea and Baltic Sea. Until now, there are only a few data available for exposure to marine litter and underwater noise in the sea.
  • Vorschaubild
    Veröffentlichung
    Die Wasserrahmenrichtlinie
    (2016) Arle, Jens; Baumgarten, Corinna; Blondzik, Katrin; Hilliges, Falk; Borchardt, Dietrich; Mathan, Cindy; Mohaupt, Volker; Naumann, Stephan; Osiek, Dirk; Rechenberg, Jörg; Schmedje, Ursula; Ullrich, Antje; Völker, Jeanette; Weiß, Andrea; Wolter, Rüdiger; Deutschland. Umweltbundesamt
    Laut der europäischen Wasserrahmenrichtlinie sollen Flüsse, Seen, Übergangsgewässer, Küstengewässer und Grundwasser spätestens bis zum Jahr 2027 in einem "guten Zustand" sein. Für den Weg dahin hat die Europäische Union den Mitgliedstaaten einen klaren Zeitplan und drei sechsjährige Bewirtschaftungszyklen vorgegeben. Die vorliegende Broschüre zeigt die Ergebnisse des ersten Bewirtschaftungszeitraumes und die Entwicklung seit dem Jahr 2009 und gibt einen Ausblick auf den beginnenden zweiten Bewirtschaftungszeitraum. Wie ist der Zustand unserer Gewässer heute? Welche Fortschritte wurden in den vergangenen Jahren erzielt? Welche Maßnahmen werden zukünftig umgesetzt? Wer soll sie leisten und was werden sie kosten?
    Quelle: Verlagsinformation
  • Veröffentlichung
    Beyond fish eDNA metabarcoding: Field replicates disproportionately improve the detection of stream associated vertebrate species
    (2021) Macher, Till-Hendrik; Arle, Jens; Schütz, Robin; Koschorreck, Jan
    Fast, reliable, and comprehensive biodiversity monitoring data are needed for environmental decision making and management. Recent work on fish environmental DNA (eDNA) metabarcoding shows that aquatic diversity can be captured fast, reliably, and non-invasively at moderate costs. Because water in a catchment flows to the lowest point in the landscape, often a stream, it can collect traces of terrestrial species via surface or subsurface runoff along its way or when specimens come into direct contact with water (e.g., when drinking). Thus, fish eDNA metabarcoding data can provide information on fish but also on other vertebrate species that live in riparian habitats. This additional data may offer a much more comprehensive approach for assessing vertebrate diversity at no additional costs. Studies on how the sampling strategy affects species detection especially of stream-associated communities, however, are scarce. We therefore performed an analysis on the effects of biological replication on both fish as well as (semi-)terrestrial species detection. Along a 2 km stretch of the river Mulde (Germany), we collected 18 1-L water samples and analyzed the relation of detected species richness and quantity of biological replicates taken. We detected 58 vertebrate species, of which 25 were fish and lamprey, 18 mammals, and 15 birds, which account for 50%, 22.2%, and 7.4% of all native species to the German federal state of Saxony-Anhalt. However, while increasing the number of biological replicates resulted in only 24.8% more detected fish and lamprey species, mammal, and bird species richness increased disproportionately by 68.9% and 77.3%, respectively. Contrary, PCR replicates showed little stochasticity. We thus emphasize to increase the number of biological replicates when the aim is to improve general species detections. This holds especially true when the focus is on rare aquatic taxa or on (semi-)terrestrial species, the so-called 'bycatch'. As a clear advantage, this information can be obtained without any additional sampling or laboratory effort when the sampling strategy is chosen carefully. With the increased use of eDNA metabarcoding as part of national fish bioassessment and monitoring programs, the complimentary information provided on bycatch can be used for biodiversity monitoring and conservation on a much broader scale. © 2021 Author(s)
  • Veröffentlichung
    Environmental DNA-based monitoring of the fish ladder in Dessau-Roßlau
    (2023) Macher, Till-Hendrik; Arle, Jens; Schütz, Robin; Beermann, Arne J.; Koschorreck, Jan; Leese, Florian; Wagner, Falko
    Fast, reliable, comprehensive, and cost-efficient biodiversity data are needed for environmental assessment and decision making in water management. In this study, we investigated whether eDNA metabarcoding approaches can fulfil these requirements for fish monitoring. We collected 18 water samples of 1 l along a 2 km stretch of the river Mulde (Germany) on a single day in April 2019, in parallel with comprehensive fisheries monitoring conducted over 17 weeks at the fish ladder in Dessau-Roßlau. Additionally, data from Water Framework Directive (WFD) fish monitoring for the years 2017-19 of the same site were available. A total of 33 fish species were detected with all three sampling strategies. The highest number of species was detected with eDNA metabarcoding (28 species), followed by the fish ladder monitoring (27) and the WFD monitoring (22). In direct comparison with the eDNA-based approach, the fish ladder assessment had a higher overlap of detected species (23 of 32 species detected by both methods) than with the WFD monitoring data (19 of 31). While eDNA-based methods are currently limited to assessing species composition, data on abundance and even age composition could also be generated in future. Here, the smart combination of fisheries-based methods with a high spatial and temporal resolution of eDNA metabarcoding can contribute to a better understanding of changes in the ecosystem and thus improve water management. © 2023, Springer Fachmedien Wiesbaden GmbH, ein Teil von Springer Nature.
  • Veröffentlichung
    Monitoring of Surface Waters in Germany under the Water Framework Directive ̶ A Review of Approaches, Methods and Results
    (2016) Arle, Jens; Kirst, Ingo; Mohaupt, Volker
    The European CommissionWater Framework Directive (WFD) was established 16 years agoand forms the current basis for monitoring surface waters and groundwater in Europe. This legislationresulted in a necessary adaptation of the monitoring networks and programs for rivers, lakes,and transitional and coastal waters to the requirements of the WFD at German and Europeanlevels. The present study reviews the most important objectives of both the monitoring of surfacewaters and the principles of the WFD monitoring plan. Furthermore, we look at the changes watermonitoring in Germany has undergone over the past sixteen years and we summarize monitoringresults from German surfaces waters under the WFD. Comparisons of European approaches forbiological assessments, of standards set for physical and chemical factors and of environmental quality standards for pollutants reveal the necessity for further European-wide harmonization. The objectiveof this harmonization is to improve comparability of the assessment of the ecological status of watersin Europe, and thus also to more coherently activate action programs of measures.
    Quelle: Monitoring of Surface Waters in Germany under the Water Framework Directive - A Review of Approaches, Methods and Results / Jens Arle [Mitverf.] ; Volker Mohaupt [Mitverf.] ;Ingo Kirst [Mitverf.]. - 22 S.: graph. Darst., Kt. In: Water 2016, 8 (6).
  • Veröffentlichung
    Die Wasserrahmenrichtlinie
    (Umweltbundesamt, 2022) Arle, Jens; Baumgarten, Corinna; Blondzik, Katrin; Frauenstein, Jörg; Hilliges, Falk; Hofmeier, Maximilian; Krakau, Manuela; Mohaupt, Volker; Mönnich, Julian; Naumann, Stephan; Osiek, Dirk; Rechenberg, Jörg; Richter, Niels; Schnäckel, Anna; Schulte, Christoph; Ullrich, Antje; Völker, Jeanette; Deutschland. Umweltbundesamt
    Die Wasserrahmenrichtlinie (WRRL) fordert den umfassenden Schutz des oberirdischen und unterirdischen Wassers. Die zehn Flussgebietsgemeinschaften Deutschlands stellen dazu alle sechs Jahre Bewirtschaftungspläne und Maßnahmenprogramme auf. Das Umweltbundesamt und das Bundesumweltministerium haben diese Berichte für Deutschland ausgewertet und stellen die Ergebnisse in dieser gemeinsamen Broschüre vor. Sie erfahren wie wir Gewässer nutzen, welche Belastungen daraus resultieren und wie sie sich auf die Gewässer auswirken. Sie werden über den aktuellen Zustand der Gewässer informiert und welche Maßnahmen geplant sind, um den Zustand zu verbessern. Quelle: www-umweltbundesamt.de
  • Veröffentlichung
    Wasserwirtschaft in Deutschland
    (2017) Arle, Jens; Bartel, Hartmut; Baumgarten, Corinna; Bertram, Andreas; Blondzik, Katrin; Brandt, Simone; Brauer, Frank; Claussen, Ulrich; Damian, Hans-Peter; Dieter, Daniela; Ginzky, Harald; Grimm, Sabine; Helmecke, Manuela; Hofmeier, Katja; Hofmeier, Maximilian; Hülsmann, Wulff; Kirschbaum, Bernd; Knobloch, Tobias; Koppe, Katharina; Koschorreck, Jan; Krakau, Manuela; Leujak, Wera; Mathan, Cindy; Mohaupt, Volker; Naumann, Stephan; Pickl, Christina; Rapp, Thomas; Rechenberg, Jörg; Deutschland. Umweltbundesamt. Abteilung II.2-Wasser und Boden
    Die Broschüre Wasserwirtschaft in Deutschland bietet einen umfassenden Überblick über die Grundlagen, Belastungen und Maßnahmen der deutschen Wasserwirtschaft und präsentiert wesentliche Fakten und aktuelle Daten rund um den Zustand unserer Gewässer, Gewässerschutz sowie Wasserversorgung und Ń entsorgung. Mit dieser Broschüre bieten wir interessierten Leserinnen und Lesern sowie der Fachöffentlichkeit ein Kompendium an Informationen und stellen Studierenden sowie Medienschaffenden eine zuverlässige Grundlage für wissenschaftliche Arbeiten und die Berichterstattung in diesem Themenbereich bereit. Quelle: https://www.umweltbundesamt.de/
  • Vorschaubild
    Veröffentlichung
    Regional assessment of the current extent of acidification of surface waters in Europe and North America
    (Norsk Institutt for Vannforskning , 2018) Austnes, Kari; Aherne, Julian; Arle, Jens
    The current status of surface water acidification related to air pollution in Europe and North America has been assessed using country reports, monitoring data, critical loads and exceedance data, acid sensitivity and deposition maps, and data reported under the European Commissionâ€Ìs Water Framework Directive (WFD). Acidification is still observed in many countries, but the extent and severity vary. Maps of acid sensitivity and deposition suggest that surface water acidification is present in regions and countries for which no data or reports were delivered for the current assessment. Existing national monitoring varies in the ability to assess the spatial extent of acidification and the recovery responses of acidified sites. The monitoring requirements under the European Unionâ€Ìs National Emission Ceilings Directive are expected to reverse the recent decline in the number of monitoring sites observed in some countries. The information reported under the WFD is currently of limited value in assessing the extent of acidification of surface waters in Europe. Chemical recovery in response to reductions in acid deposition can be slow, and biological recovery can lag severely behind. Despite large and effective efforts across Europe and North America to reduce surface water acidification, air pollution still constitutes a threat to freshwater ecosystems. Quelle: http://pure.iiasa.ac.at