Description: Das Projekt "ERMAS II: Europaeische Flussufersysteme: die Rolle der natuerlichen Vielfalt fuer die Funktion von Flussufersystemen" wird vom Umweltbundesamt gefördert und von Universite de Neuchatel, Institut de Botanique, Lab. d'Ecologie Vegetale et de Phytosociologie durchgeführt. '- To evaluate the functional role of biodiversity (i.e. autogenic processes) in determining the sensitivity of river margin ecosystems to differences in environmental conditions (particularly temperature and hydrology). - To asses the variation in biodiversity in the riparian corridor in relation to (a) macroscale, (b) meso-scale, and (c) micro-scale environmental controls, as defined above. - To define spatial relationships between plant species distributions and biomass, and environmental factors: precipitation and temperature; sediment type, and landuse (disturbance regime); flood timing, flood frequency and duration. - To establish spatial relationships between plant and animal (invertebrate) diversity, at the patch scale. - To establish the influence of single species and mixed species litter on the decomposition process. - To assess the influence of litter derived from locally-common exotic species on the decomposition process (to investigate the significance for ecosystem functioning of replacing native species with exotics). - To assess the extent to which allogenic constraints (i.e. environmental conditions) control carbon and nitrogen cycling and availability, and therefore plant productivity and species richness in river margins. - To investigate the influence of autogenic factors, such as comptition between species, on river margin productivity via its influence on nitrogen uptake and cycling. - To establish the relationships between litter type and diversity, and invertebrate diversity. - To evaluate the functional role of invertebrate community diversity in litter decomposition within river margin ecosystems. Leading Questions: How does the sensitivity of river margin ecosystems to environmental change vary along climatic, disturbance and successional gradients? How is the sensitivity of river margin ecosystems influenced by species richness and composition?
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Gewässerrandstreifen ? Fluss ? Kohlenstoff ? Stickstoff ? Temperaturverteilung ? Hochwasser ? Überschwemmung ? Flussbegradigung ? Gelöster organischer Kohlenstoff ? Wirbellose ? Pflanzenart ? Aufbereitungstechnik ? Biologische Konkurrenz ? Einheimische Art ? Pflanzenverfügbarkeit ? Fließgewässerökosystem ? Flächennutzung ? Sediment ? Tier ? Flussgebiet ? Artenbestand ? Artenvielfalt ? Europa ? Ökosystemfunktion ? Ökosystemzustand ? Hydrologie ? Klima ? Niederschlag ? Ökologischer Faktor ? Ökosystem ? Produktivität ? Stoffkreislauf ? Umweltveränderung ? Biomasse ? Biodiversität ? disturbance regime ? litter decomposition ? nitrogen cycling ? river margins ? sensitivity ? Diversität ?
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 1996-02-01 - 1999-01-31
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