Regulation of nitrogen fixation from free-living organisms in soil and leaf litter of two tropical forests of the Guiana shield

Autor: Sara Vicca, Oriol Grau, Josep Peñuelas, Ifigenia Urbina, Thomas Depaepe, Dominique Van Der Straeten, Joke Van den Berge, Pascal Boeckx, Andreas Richter, James T. Weedon, Clément Stahl, Ivan A. Janssens, Elodie A. Courtois, Dolores Asensio, Leandro Van Langenhove
Přispěvatelé: Centre of Excellence PLECO, Department of Biology, University of Antwerp (UA), Department of Biology Ghent, Laboratory of Functionnal Plant Biology, Ghent University, Ecologie des forêts de Guyane (UMR ECOFOG), Université des Antilles (UA)-Université de Guyane (UG)-Centre National de la Recherche Scientifique (CNRS)-AgroParisTech-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA), Laboratoire Ecologie, évolution, interactions des systèmes amazoniens (LEEISA), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Guyane (UG)-Centre National de la Recherche Scientifique (CNRS), Department of Ecological Science [Amsterdam], Vrije Universiteit [Brussels] (VUB), Global Ecology Unit (CREAF-CSIC-UAB), Centre de Recerca Ecològica i Aplicacions Forestals (CREAF), Unit CREAF-CSIC-UABB, CREAF, Centre de Recerca Ecologica i Applicacions Forestals, Consejo Superior de Investigaciones Científicas, Faculty of Bioscience Engineering, Isotope Bioscience Laboratory - ISOFY, Department of Microbiology and Ecosystem Science, University of Vienna, Department of Biology, Laboratory of Functionnal Plant Biology, Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-AgroParisTech-Université de Guyane (UG)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), Laboratoire Ecologie, Evolution, Interactions des Systèmes amazoniens (LEEISA), Centre National de la Recherche Scientifique (CNRS)-Université de Guyane (UG)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Vrije Universiteit Brussel (VUB), University of Vienna [Vienna], Systems Ecology
Rok vydání: 2019
Předmět:
0106 biological sciences
forêt tropicale humide
[SDV]Life Sciences [q-bio]
Soil Science
chemistry.chemical_element
ACETYLENE-REDUCTION
Plant Science
Rainforest
Biology
01 natural sciences
OXYGEN
CARBON
molybdenum
tropical rain forests
Nutrient
Tropical forest
free-living nitrogen fixation
SYMBIOTIC DINITROGEN FIXATION
nutrients
Ecosystem
SPATIAL VARIATION
NUTRIENT AVAILABILITY
phosphorus
Molybdenum
LIMITATION
Phosphorus
Biology and Life Sciences
Regular Article
Edaphic
Nutrients
RAIN-FOREST
04 agricultural and veterinary sciences
15. Life on land
Plant litter
French Guiana
Agronomy
chemistry
fixation de l'azote
Earth and Environmental Sciences
Soil water
040103 agronomy & agriculture
Nitrogen fixation
guyane française
0401 agriculture
forestry
and fisheries
Free-living nitrogen fixation
010606 plant biology & botany
Zdroj: Plant and Soil
Plant and Soil, Springer Verlag, 2019, ⟨10.1007/s11104-019-04012-1⟩
PLANT AND SOIL
Plant and soil
Van Langenhove, L, Depaepe, T, Vicca, S, van den Berge, J, Stahl, C, Courtois, E, Weedon, J, Urbina, I, Grau, O, Asensio, D, Peñuelas, J, Boeckx, P, Richter, A, Van Der Straeten, D & Janssens, I A 2019, ' Regulation of nitrogen fixation from free-living organisms in soil and leaf litter of two tropical forests of the Guiana shield ', Plant and Soil, vol. 450, no. 1-2, pp. 1–18 . https://doi.org/10.1007/s11104-019-04012-1
Recercat. Dipósit de la Recerca de Catalunya
instname
Plant and Soil, 450(1-2). Springer Netherlands
Recercat: Dipósit de la Recerca de Catalunya
Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Dipòsit Digital de Documents de la UAB
Universitat Autònoma de Barcelona
Plant And Soil (0032-079X) (Springer Nature), 2020-05, Vol. 450, N. 1-2, P. 93-110
ISSN: 1573-5036
0032-079X
DOI: 10.1007/s11104-019-04012-1
Popis: Background and aims Biological fixation of atmospheric nitrogen (N2) is the main pathway for introducing N into unmanaged ecosystems. While recent estimates suggest that free-living N fixation (FLNF) accounts for the majority of N fixed in mature tropical forests, the controls governing this process are not completely understood. The aim of this study was to quantify FLNF rates and determine its drivers in two tropical pristine forests of French Guiana. Methods We used the acetylene reduction assay to measure FLNF rates at two sites, in two seasons and along three topographical positions, and used regression analyses to identify which edaphic explanatory variables, including carbon (C), nitrogen (N), phosphorus (P) and molybdenum (Mo) content, pH, water and available N and P, explained most of the variation in FLNF rates. Results Overall, FLNF rates were lower than measured in tropical systems elsewhere. In soils seasonal variability was small and FLNF rates differed among topographies at only one site. Water, P and pH explained 24% of the variation. In leaf litter, FLNF rates differed seasonally, without site or topographical differences. Water, C, N and P explained 46% of the observed variation. We found no regulatory role of Mo at our sites. Conclusions Rates of FLNF were low in primary rainforest on poor soils on the Guiana shield. Water was the most important rate-regulating factor and FLNF increased with increasing P, but decreased with increasing N. Our results support the general assumption that N fixation in tropical lowland forests is limited by P availability. Electronic supplementary material The online version of this article (10.1007/s11104-019-04012-1) contains supplementary material, which is available to authorized users.
Databáze: OpenAIRE
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