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Homogenisation of ECosystem functioning between Temperate and Neotropical streams due to AgRicultural land usE (HECTARE)

Description: Das Projekt "Homogenisation of ECosystem functioning between Temperate and Neotropical streams due to AgRicultural land usE (HECTARE)" wird vom Umweltbundesamt gefördert und von Helmholtz-Zentrum für Umweltforschung GmbH - UFZ, Department Seenforschung durchgeführt. The expansion and intensification of agricultural areas and the associated deforestation, eutrophication and modification of habitat heterogeneity remain the most important stressors to stream ecosystem functioning worldwide. The alteration of key environmental characteristics may cause the loss of functional attributes specific for streams in different climate zones and may ultimately lead to a homogenisation of stream ecosystem functioning. Previous studies were mostly restricted to a single function in a particular biome and a thorough understanding on the potential for an agriculturally driven functional homogenisation of stream ecosystems among climate zones is lacking. The project HECTARE analyses ecosystem functioning of pristine and agricultural streams situated in the German Harz and in the Brazilian Cerrado and Atlantic forest. By the novel combination of quantification of food webs and measurements of ecosystem productivity and respiration, HECTARE delivers a mechanistic understanding on energy- and matter fluxes in temperate and Neotropical streams including their trophic coupling to the catchments. Building on that, key pathways of whole-ecosystem matter and energy fluxes that are impacted by agricultural land use will be identified. The inter-biome approach proposed with HECTARE will allow for a synthesis of impact patterns associated with agricultural land use and an analysis of the degree of functional homogenisation of stream ecosystems.

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SupportProgram

Origin: /Bund/UBA/UFORDAT

Tags: Entwaldung ? Eutrophierung ? Fluss ? Blei ? Biozönose ? Bodennutzung ? Gebäude ? Habitat ? Hydrogeologie ? Landwirtschaftliche Nutzung ? Ökosystemfunktion ? Atmung ? Energie ? Energiebilanz ? Rechtsverfahren ? Hydrochemie ? Limnologie ? Siedlungswasserwirtschaft ? Studie ? Synthese ? Umweltforschung ? Wasserspeicher ? Novel Food ? Schaden ? Wirkung ? Messung ? Wald ? Landwirtschaft ? Lebensmittel ? Nahrungskette ? Ökosystem ? Produktivität ? Umwelt ? Umweltveränderung ? Globale Aspekte ? Landwirtschaftliche Fläche ? Änderung ? Hydrologie ? Atlantischer Ozean ? Klima ? Klimazone ? GEKOPPELT ? MISCHUNG ? NATURNAH ? NEU ? Netz ? PFAD ? POTENZIAL ? PROJEKT ? FUNKTION ? SPEZIFISCH ? TROPHISCH ? WICHTIG ? Integrierte Wasser-Ressourcen Bewirtschaftung ?

Region: Saxony-Anhalt

Bounding box: 11.7333° .. 11.7333° x 52° .. 52°

License: cc-by-nc-nd/4.0

Language: Deutsch

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Time ranges: 2012-01-01 - 2017-12-31

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