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Exzellenzcluster 80 (EXC): Ozean der Zukunft

Description: Das Projekt "Exzellenzcluster 80 (EXC): Ozean der Zukunft" wird vom Umweltbundesamt gefördert und von Helmholtz-Zentrum für Ozeanforschung Kiel (GEOMAR), Forschungsbereich 2: Marine Biogeochemie, Forschungseinheit biologische Ozeanographie durchgeführt. The oceans presently absorb one third of anthropogenic CO2 emissions, causing a gradual acidification of oceanic surface waters. While the magnitude of CO2-induced ocean acidification can be predicted with reasonable confidence, its impacts on marine organisms and their ecosystems are largely uncertain. Recent data show that particularly calcifying organisms can be adversely affected by ocean acidification. At the base of the marine food web, coccolithophores - an important group of calcifying phytoplankton - experience reduced calcification and increased malformations of their calcite platelets at elevated CO2. Like most phytoplankton, coccolithophores operate active ion transport systems to take up inorganic carbon for photosynthesis. This so-called carbon concentrating mechanism (CCM) also supplies, together with calcium ion transporters, the building blocks for calcite formation. The ability of coccolithophores to adapt to acidi-fication and to maintain their competitive fitness in The Future Ocean will partly depend on the adaptive potential of their membrane transport systems to CO2 induced changes in seawater chemistry.

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SupportProgram

Origin: /Bund/UBA/UFORDAT

Tags: Kiel ? CO2-Emission ? Calcium ? Biogeochemie ? Kohlenstoff ? Meerwasser ? Phytoplankton ? Meeresorganismen ? Gebäude ? Meereskunde ? Marines Ökosystem ? Photosynthese ? Oberflächenwasser ? Gelöster organischer Kohlenstoff ? Ozeanversauerung ? Hydrochemie ? Ionen ? Oberflächengewässer ? Beschaffung ? Calcit ? Meeresgewässer ? Ökosystemforschung ? Wirkung ? Daten ? Datenerhebung ? Informationsgewinnung ? Anthropogener Einfluss ? Nahrungskette ? Ökosystem ? Organismen ? Umweltveränderung ? Verkehrssystem ? Naturpotential ? CO2-Speicherung [CCS] ? Marine Nahrungskette ? Basen [chemisch] ? Konzentrat ?

Region: Schleswig-Holstein

Bounding box: 9.75° .. 9.75° x 54.2° .. 54.2°

License: cc-by-nc-nd/4.0

Language: Deutsch

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Time ranges: 2007-09-01 - 2008-08-31

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