co 2
DESCRIPTION
Theme 2: Ecosystem impacts, acclimation and adaptation. CO 2. Climate relevant gases. WP5. WP8 Trophic interactions. Ocean chemistry. Autotrophic processes. WP7 Microbial activity. WP4-8 Adaptation. WP4 Biocalcification. N utrient availability. WP6 Reproduction & growth. WP9 - PowerPoint PPT PresentationTRANSCRIPT
CO2
Theme 2: Ecosystem impacts, acclimation and adaptation
WP5 WP8 Trophic interactions
Climate relevantgases
Nutrientavailability
Autotrophic processes
WP6Reproduction & growth
WP4-8Adaptation
WP7Microbial activity
WP4Biocalcification
Oceanchemistry
WP9From process studies to ecosystem models
Theme 2 Ecosystem impacts, acclimation and adaptation• WP4 Sensitivity of calcification (D. Iglesias-Rodriguez)• WP5 Sensitivity of autotrophic processes (U. Riebesell)• WP6 Performance: reproduction and growth (H.-O. Pörtner)• WP7 Microbial diversity and activity, in particular nitrogen cycling (J. Middelburg)• WP8 Impact on trophic interactions (F. Thingstad)• WP9 From process studies to ecosystem models (A. Oschlies)
Theme 2 - Key Questions
What are the effects of ocean acidification and related
changes in seawater chemistry on marine organisms, what
are the underlying mechanisms of the observed responses
and the potential for adaptation, how are they modulated
by other environmental stressors, and what are the
consequences for marine ecosystems and ocean
biogeochemical cycles?
Theme 2 - Approaches
Lab and mesocosm CO2 perturbation experiments
combined with
Physiological and molecular techniques
Analysis of trophic interactions
Biogeochemical approaches
Meta-analysis of process studies
Combined modelling and data assimilation
joint mesocosm experiment in the high Arctic
at Ny Alesund, Svalbard, May 2009
joint mesocosm experiment in the high Arctic
at Ny Alesund, Svalbard, May 2009
Mesocosm mooring site
Winter / Frühjahrjoint mesocosm experiment in the high
Arctic at Ny Alesund, Svalbard, May 2009
Pelagic mesocosm CO2 enrichment experiment
380
720
550 86010401200
pCO2 (µatm)
Benthic mesocosm CO2 perturbation experiments
Winter / Frühjahr
Why high Arctic? carbonate sub-saturation will first occur in high
latitudes
Why Ny Alesund? northern-most research station, excellent
logistical support
Ny Alesund in May
joint mesocosm experiment in the high Arctic
at Ny Alesund, Svalbard, May 2009