Contrasting nitrogen and phosphorus fertilization effects on soil terpene exchanges in a tropical forest
Type | Article | ||||||||||||
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Date | 2022-01 | ||||||||||||
Language | English | ||||||||||||
Author(s) | Llusià Joan1, 2, Asensio Dolores1, 2, Sardans Jordi1, 2, Filella Iolanda1, 2, Peguero Guille1, 2, Grau Oriol1, 2, Ogaya Romà1, 2, Gargallo-Garriga Albert1, 2, Verryckt Lore T.3, Van Langenhove Leandro3, Brechet Laëtitia M., Courtois Elodie4, 5, 6, Stahl Clément5, Janssens Ivan A.3, Peñuelas Josep1, 2 | ||||||||||||
Affiliation(s) | 1 : CREAF, Campus Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona 08193, Catalonia, Spain 2 : CSIC, Global Ecology Unit CREAF- CSIC-UAB, Bellaterra, Barcelona 08193, Catalonia, Spain 3 : Department of Biology, Research Group PLECO (Plant and Ecosystems), University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium 4 : Laboratoire Ecologie, Evolution, interactions des systèmes amazoniens (LEEISA), Université de Guyane, CNRS, IFREMER, 97300 Cayenne, French Guiana 5 : INRA, UMR Ecology of Guiana Forests (Ecofog), AgroParisTech, Cirad, CNRS, Université des Antilles, Université de Guyane, 97387 Kourou, French Guiana 6 : Center of Excellence Global Change Ecology, Department of Biology, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium |
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Source | Science Of The Total Environment (0048-9697) (Elsevier BV), 2022-01 , Vol. 802 , P. 149769 (15p.) | ||||||||||||
DOI | 10.1016/j.scitotenv.2021.149769 | ||||||||||||
WOS© Times Cited | 3 | ||||||||||||
Keyword(s) | French Guyana, Monoterpenes, Sesquiterpenes, Nutrients, Topographic elevation, Season | ||||||||||||
Abstract | Production, emission, and absorption of biogenic volatile organic compounds (BVOCs) in ecosystem soils and associated impacts of nutrient availability are unclear; thus, predictions of effects of global change on source-sink dynamic under increased atmospheric N deposition and nutrition imbalances are limited. Here, we report the dynamics of soil BVOCs under field conditions from two undisturbed tropical rainforests from French Guiana. We analyzed effects of experimental soil applications of nitrogen (N), phosphorus (P), and N + P on soil BVOC exchanges (in particular of total terpenes, monoterpenes, and sesquiterpenes), to determine source and sink dynamics between seasons (dry and wet) and elevations (upper and lower elevations corresponding to top of the hills (30 m high) and bottom of the valley). We identified 45 soil terpenoids compounds emitted to the atmosphere, comprising 26 monoterpenes and 19 sesquiterpenes; of these, it was possible to identify 13 and 7 compounds, respectively. Under ambient conditions, soils acted as sinks of these BVOCs, with greatest soil uptake recorded for sesquiterpenes at upper elevations during the wet season (-282 μg m-2 h-1). Fertilization shifted soils from a sink to source, with greatest levels of terpene emissions recorded at upper elevations during the wet season, following the addition of N (monoterpenes: 406 μg m-2 h-1) and P (sesquiterpenes: 210 μg m-2 h-1). Total soil terpene emission rates were negatively correlated with total atmospheric terpene concentrations. These results indicate likely shifts in tropical soils from sink to source of atmospheric terpenes under projected increases in N deposition under global change, with potential impacts on regional-scale atmospheric chemistry balance and ecosystem function. |
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