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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
2nd ICOS Scientific Conference on greenhouse gases and biogeochemical cycles28.09.2016, Helsinki
1 Max Planck Institute for Biogeochemistry Department Biogeochemical Integration, Germany2 Centro de Estudios Ambientales del Mediterráneo (CEAM), Spain
3 Forest Research Group - INDEHESA University of Extremadura, Spain4Consejo Superior De Investigaciones Cientificas, Spain
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Experimental Goals
Ecosystem and physiological response to different N/P stoichiometry
Structural and physiological
phenology
Soil processes and properties
Nutrient availability
FluxesIAV
Hyperspec SigVegetation Ind
Water and Nutrient availability
PhenologyET partitioning
ReflectanceAbove-/Below-
Ground BiomassTree-Grass-Competition
Nutrient availability
Soil RespirationC-AllocationC-Turnover
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Study site – Majadas del Tietar
N-ADD
NP-ADD
CONTROL
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Instrumentation
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Instrumentation
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‘Wet’ site
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‘Wet‘ study site – Majadas del Tietar
N-ADD
NP-ADD
CONTROL
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Surface properties and fluxes
High resolution surface property map
Classification of PFTs
Calculate 2-D footprint (Dettoet al., 2006, Hsieh et al., 2000)
Intersect FP with classification and VI maps
Weighing according to FP-pdf
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Pre-fertilization Benchmarking (Spring) Half-hourly NEE fluxes
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Post-fertilization (Spring)Half-hourly NEE fluxes Half-hourly LE fluxes
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Spatial Heterogeneity
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Spatial Heterogeneity
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LRC - MTCI
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LRC - MTCI
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LRC – Nitrogen content
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Flux-Precipitation-Relation
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Flux-Precipitation-Relation
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http://1920x1080hdwallpapers.com/image/201505/macro/1516/grass-drop-water-dew-sunrise.jpg
Thank you for your attention
Thanks for your attention
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Phenocam season estimation
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N in Biomass
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Drying out
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Phenocam analysis
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Seasonal cycle GPP 2015/2016
20162015
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MDC 2014 Spring
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MDC 2015 Spring
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MDC 2016 Spring
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Histogram and median 2014 Spring
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Histogram and median 2015 Spring
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Histogram and median 2016 Spring