Conference/Workshop 5 - Keflavik (IS) 25-27 June 2011

Conference/Workshop 5:
Nutrient constraints on the net carbon balance

The CLIMMANI conference and workshop 5 was held in Iceland (Keflavik) 25-27 June 2011 in collaboration with the US network INTERFACE

The conference included sessions on:

• Carbon availability as a control of carbon sequestration

• Nitrogen limitation and nitrogen fixation

• Phosphorus limitations to plant growth and microbial processes

• Acidity and base cation availability as a controlling factor on soil carbon sequestration

• Ecological adaptation and its impacts, interactions and controls on resource availability

• Nitrogen limitation as a controlling factor for soil carbon dynamics

Programme here

Presentations are available below

Session I (Chairs: Christian Körner and Steve Running)
Carbon availability as a control of carbon sequestration

Hendrik Poorter
Is plant growth driven by photosynthesis?     
 
Christian Körner
Concepts and constraints for scaling from baseline metabolism to ecosystem carbon relations     
 
Reto Stockli
The terrestrial water & carbon cycle in climate models: status and challenges     
 
Steve Running
Global scale calculations of the terrestrial carbon and water cycle components with remote sensing     

Session II (Chairs: Tom DeLuca & Elena Shevliakova)
Nitrogen limitation and nitrogen fixation

Stefan Gerber
Global dynamic land modelling of C & N cycling.     
 
Lianhai Wu
Ecosystem scale modelling of C and N flux incorporating leguminous N fixation in agricultural systems.     
 
Sasha Reed
NITROGEN FIXATION what do we know and what do we need to know?    
 
Michael Gundale
Nitrogen fixation in moss communities in boreal forests and broader influence on ecosystem N cycle.      

Session III (Chairs: Cory Cleveland & Lina Mercado)
Phosphorus limitations to plant growth and microbial processes

Jon Lloyd
Phosphorus and tropical ecosystem productivity: A critical evaluation of the Vitousek Paradigm 25+ years     
 
Ben Turner
Nutrient limitation of above and below‐ground productivity in lowland and montane tropical rain forest
 
Lina Mercado
Accounting for N &P limitations in tropical forests using the land component of an earth system model     
 
Ben Houlton
A framework for representing P in earth system models     

Session IV (Chairs: Filip Oulehle & Christy Goodale)
Acidity and base cation availability as a controlling factor on soil carbon sequestration

Filip Oulehle
Major changes in forest carbon and nitrogen cycling caused by declining sulphur deposition     
 
Frank Berninger
Long term changes in tree productivity as a response to acid and nitrogenous deposition evidence from tree rings and isotopes     
 
Vince Gauci
Sulfur deposition and methane emissions from wetland soils     
 
April Melvin
Calcium fertilization alters forest carbon storage     

Session V (Chairs: Ben Smith & Sarah Hobbie)
Ecological adaptation and its impacts, interactions and controls on resource availability

Rudiger Grote
Resource-use description in physiologically-based models. A major restriction for describing competition?     
Will Cornwell
Limits to positive feedbacks: a more complete model for community assembly and species' effects on decomposition.     
 
Katie Suding
Indirect controls on resource availability: a traitbased effect and response framework to understand when community change matters.     
 
Rosie Fisher
The representation of space and stochasticity in one-dimensional and deterministic global vegetation models     

Session VI (Chairs: Ivan Janssens & Mac Post)
Nitrogen limitation as a controlling factor for soil carbon dynamics

Ivan Janssens
N deposition and fertilization reduce soil respiration: Evidence and mechanisms.     
 
Peter van Bodegom
Towards global quantification of soil N-C-cycles by coupling trait-based vegetation models to microbial biomass induced soil mineralization models     
 
Mac Post
Representations soil carbon dynamics and nitrogen limitation of decomposition in terrestrial ecosystem models: Present and future directions      
 
Pam Templer
Impact of nitrogen deposition on carbon storage in terrestrial ecosystems     

As part of the workshop a field excursion to the SW Iceland was conducted

Detailed Programme and list of participants and
Minutes and results