MaNiP – A large scale nutrition manipulation experiment in a tree grass ecosystem to understand ecosystem-physiological response to changing N/P stoichiometry.

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Presentation transcript:

MaNiP – A large scale nutrition manipulation experiment in a tree grass ecosystem to understand ecosystem-physiological response to changing N/P stoichiometry and water availability Tarek El-Madany1, Mirco Migliavacca1, Oscar Perez-Priego1, Olaf Kolle1, Nuno Carvallhais1, Yun-Peng Luo1, Arnaud Carrara², Gerardo Moreno³, Javier Pacheco-Labrador4, Maria-Pilar Martin-Isabel4, Markus Reichstein1 1 Max Planck Institute for Biogeochemistry Department Biogeochemical Integration, Germany 2 Centro de Estudios Ambientales del Mediterráneo (CEAM), Spain 3 Forest Research Group - INDEHESA University of Extremadura, Spain 4Consejo Superior De Investigaciones Cientificas, Spain 2nd ICOS Scientific Conference on greenhouse gases and biogeochemical cycles 28.09.2016, Helsinki

Experimental Goals Nutrient availability Ecosystem and physiological response to different N/P stoichiometry Structural and physiological phenology Soil processes and properties Nutrient availability Fluxes IAV Hyperspec Sig Vegetation Ind Water and Nutrient availability Phenology ET partitioning Reflectance Above-/Below- Ground Biomass Tree-Grass-Competition Soil Respiration C-Allocation C-Turnover

Study site – Majadas del Tietar N-ADD NP-ADD CONTROL

Instrumentation

Instrumentation

‘Wet’ site

‘Wet‘ study site – Majadas del Tietar N-ADD NP-ADD CONTROL

Surface properties and fluxes High resolution surface property map Classification of PFTs Calculate 2-D footprint (Detto et al., 2006, Hsieh et al., 2000) Intersect FP with classification and VI maps Weighing according to FP-pdf

Pre-fertilization Benchmarking (Spring) Half-hourly NEE fluxes

Post-fertilization (Spring) Half-hourly LE fluxes Half-hourly NEE fluxes

Spatial Heterogeneity

Spatial Heterogeneity

LRC - MTCI

LRC - MTCI

LRC – Nitrogen content

Flux-Precipitation-Relation

Flux-Precipitation-Relation

Thanks for your attention Thank you for your attention http://1920x1080hdwallpapers.com/image/201505/macro/1516/grass-drop-water-dew-sunrise.jpg