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New Phytol. 2016 Jan;209(1):17-28. doi: 10.1111/nph.13593. Epub 2015 Aug 6.

Model-data synthesis for the next generation of forest free-air CO2 enrichment (FACE) experiments.

Author information

1
Environmental Sciences Division and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, TN, 37831-6301, USA.
2
Department of Biological Sciences, Macquarie University, North Ryde, NSW, 2109, Australia.
3
Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, São Paulo, 14040-901, Brasil.
4
Hawkesbury Institute for the Environment, University of Western Sydney, Richmond, NSW, 2751, Australia.
5
Laboratoire de Sciences de Climat et de l'Environnement, IPSL, Gif-sur-Yvette, F-91198, France.
6
Laboratório de Ciência do Sistema Terrestre, Departamento de Ecologia, Universidade Estadual Paulista, Rio Claro, São Paulo, 14800-850, Brasil.
7
Biogeochemical Integration Department, Max Planck Institute for Biogeochemistry, Jena, D-07701, Germany.
8
Birmingham Institute of Forest Research, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
9
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, 91109, USA.
10
Potsdam Institute for Climate Impact Research, Potsdam, 14473, Germany.
11
TUM School of Life Sciences Weihenstephan, Technische Universität München, Freising, 85354, Germany.
12
Department of Physical Geography and Ecosystem Science, Lund University, Geocentrum II, Lund, 22362, Sweden.

Abstract

The first generation of forest free-air CO2 enrichment (FACE) experiments has successfully provided deeper understanding about how forests respond to an increasing CO2 concentration in the atmosphere. Located in aggrading stands in the temperate zone, they have provided a strong foundation for testing critical assumptions in terrestrial biosphere models that are being used to project future interactions between forest productivity and the atmosphere, despite the limited inference space of these experiments with regards to the range of global ecosystems. Now, a new generation of FACE experiments in mature forests in different biomes and over a wide range of climate space and biodiversity will significantly expand the inference space. These new experiments are: EucFACE in a mature Eucalyptus stand on highly weathered soil in subtropical Australia; AmazonFACE in a highly diverse, primary rainforest in Brazil; BIFoR-FACE in a 150-yr-old deciduous woodland stand in central England; and SwedFACE proposed in a hemiboreal, Pinus sylvestris stand in Sweden. We now have a unique opportunity to initiate a model-data interaction as an integral part of experimental design and to address a set of cross-site science questions on topics including responses of mature forests; interactions with temperature, water stress, and phosphorus limitation; and the influence of biodiversity.

KEYWORDS:

biodiversity; climate; elevated CO2; forest; free-air CO2 enrichment (FACE); model-data synthesis; nitrogen (N); phosphorus (P)

PMID:
26249015
DOI:
10.1111/nph.13593
[Indexed for MEDLINE]
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