Description: Das Projekt "How does the future climate affects water quality in lake geneva? from understanding to predicting phytoplankton and nutrients trough an integrative modeling approach" wird vom Umweltbundesamt gefördert und von University of Waikato, Center of Biodiversity and Ecology Environmental Research Institute durchgeführt. Lakes can be considered as sentinels and thus indicators and integrators of environmental pressures such as climate change. To maintain lakes in a healthy ecological state is nowadays a major task for water management authorities, and will be increasingly so under climate change which is believed to negatively affect lake ecosystem functioning. Phytoplankton plays a key role in lake dynamics as it is at the base of the food web, and changes in its community have potential to affect the entire lake ecosystem. In addition, Cyanobacteria, the only freshwater phytoplankton group that is able to produce cyanotoxins, are capable of inflicting considerable harm to lake ecosystems and to human health through contamination of drinking water supply and toxin accumulation in fishes. Phytoplankton is thus a common indicator to assess the ecological status of lakes. Without understanding the complex mechanisms and processes that underlay a lake ecosystem in a changing climate, planning for future lake management and adaptation will be compromised. Numerical deterministic modelling is today the most appropriate approach to address these global and complex mechanistic features of lake ecosystems. Modeling studies play a key role in exploring the processes responsible for changes since they can be used to test the sensitivity of lakes to both observed and projected changes in climate. The aim of this project is to apply an ecological model to Lake Geneva, which has not been undertaken yet. Lake Geneva, a deep sub-Alpine lake, is the largest lake in central Europe and an essential source of drinking water, having not only a high ecological value, but also economic and social values. Due to its considerable environmental importance, it is crucial to assess, through numerical modeling techniques applied, how the Lakes water quality may be impaired; especially in view of the fact the observed rate of warming since 1900 is more than double that of the observed global average. Moreover, the hydrodynamic characteristics of Lake Geneva, the watershed of its most important inflow river Rhône, as well as the regional climate, have already been modeled. In coupling these models together, we will close the essential gaps, through which we will be able to understand the links between climate, watersheds, and lakes and provide a whole, integrated ecosystem perspective. This integrative model will provide an accurate predictive management tool to help take decisions and response strategies in a timely manner. It is generally recognized that future climate change will have an important impact on Lake Geneva, with a likely deterioration of its water quality. This will be manifested by high phosphorus concentrations, by phytoplankton biomass increase, by a change in phytoplankton composition, by an asynchronous phenology and by an emergence of potentially toxic Cyanobacteria.(...)
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Origin: /Bund/UBA/UFORDAT
Tags: Phosphorgehalt ? Hydrodynamik ? Zufluss ? Seen ? Fluss ? Cyanotoxin ? Genf ? Cyanobakterien ? Fisch ? Nährstoff ? Ökologie ? Phytoplankton ? Brunnen ? Bakterientoxin ? Behörde ? Ökologischer Zustand ? Toxin ? Umweltbelastung ? Wirkung ? Studie ? Technik ? Mesoklima ? Toxizität ? Trinkwasser ? Getränk ? Umweltforschung ? Wasserqualität ? Wasserversorgung ? Gewässerqualität ? Bewässerung ? Ökosystemmodell ? Phänologie ? Wasser ? Hochgebirge ? Modellierung ? Management ? Menschliche Gesundheit ? Europa ? Mensch ? Klimafolgen ? Klimaanpassung ? Salztonebene ? Staat ? Strategische Aspekte ? Indikator ? Klima ? Klimawandel ? Lebensmittel ? Nahrungskette ? Ökosystem ? Umwelt ? Wasserscheide ? Wasserwirtschaft ? Planung ? Globale Aspekte ? Verunreinigung ? Fluss ? Biodiversität ? Anreicherung ? Mittelwert ? Forschungseinrichtung ? Gesundheit ? Ökomodell ? POTENZIAL ? PROJEKT ? Rhone ? SCHAEDIGUNG ? GEKOPPELT ? SICHT ? STILLGELEGT ? See [Binnengewässer] ? GEMEINSCHAFT ? UEBEREMPFINDLICHKEIT ? GEMISCHT ? UNTER ? FUNKTION ? UNTERSUCHUNG ? VERANTWORTUNG ? FAEHIG ? WERT ? WICHTIG ? GRUPPE ? Werkzeug ? HILF ? GEBRAUCHT ? Aquatische Biomasse ? LAENDER ? Lake Ecosystem ? BEWERTEN ? Basen [chemisch] ? ANGEWANDT ? MECHANISMEN ? CAEDYM / DYRESM ? Deterministische Methode ? Netz ? OEKONOMISCH ? PERSPEKTIVE ? ENTSCHEIDUNG ? Vermehrung ?
License: cc-by-nc-nd/4.0
Language: Englisch/English
Time ranges: 2013-01-01 - 2013-12-31
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