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Sci Total Environ

Title:		Contrasting nitrogen and phosphorus fertilization effects on soil terpene exchanges in a tropical forest
Author(s):		Llusia J; Asensio D; Sardans J; Filella I; Peguero G; Grau O; Ogaya R; Gargallo-Garriga A; Verryckt LT; Van Langenhove L; Brechet LM; Courtois E; Stahl C; Janssens IA; Penuelas J;
Address:		"CREAF, Campus Universitat Autonoma de Barcelona, Cerdanyola del Valles, Barcelona 08193, Catalonia, Spain; CSIC, Global Ecology Unit CREAF- CSIC-UAB, Bellaterra, Barcelona 08193, Catalonia, Spain. Electronic address: j.llusia@creaf.uab.cat. CREAF, Campus Universitat Autonoma de Barcelona, Cerdanyola del Valles, Barcelona 08193, Catalonia, Spain; CSIC, Global Ecology Unit CREAF- CSIC-UAB, Bellaterra, Barcelona 08193, Catalonia, Spain. Department of Biology, Research Group PLECO (Plant and Ecosystems), University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium. INRAE, UMR Ecology of Guiana Forests (Ecofog), AgroParisTech, Cirad, CNRS, Universite des Antilles, Universite de Guyane, 97387 Kourou, French Guiana; Center of Excellence Global Change Ecology, Department of Biology, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium. Laboratoire Ecologie, Evolution, interactions des systemes amazoniens (LEEISA), Universite de Guyane, CNRS, IFREMER, 97300 Cayenne, French Guiana. INRAE, UMR Ecology of Guiana Forests (Ecofog), AgroParisTech, Cirad, CNRS, Universite des Antilles, Universite de Guyane, 97387 Kourou, French Guiana"
Journal Title:		Sci Total Environ
Year:		2022
Volume:		20210824
Issue:
Page Number:		149769 -
DOI:		10.1016/j.scitotenv.2021.149769
ISSN/ISBN:		1879-1026 (Electronic) 0048-9697 (Linking)
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 mug 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 mug m(-2) h(-1)) and P (sesquiterpenes: 210 mug 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"
Keywords:		Ecosystem Fertilization Forests *Nitrogen Phosphorus *Soil Terpenes French Guyana Monoterpenes Nutrients Season Sesquiterpenes Topographic elevation;
Notes:		"MedlineLlusia, Joan Asensio, Dolores Sardans, Jordi Filella, Iolanda Peguero, Guille Grau, Oriol Ogaya, Roma Gargallo-Garriga, Albert Verryckt, Lore T Van Langenhove, Leandro Brechet, Laetitia M Courtois, Elodie Stahl, Clement Janssens, Ivan A Penuelas, Josep eng Netherlands 2021/09/01 Sci Total Environ. 2022 Jan 1; 802:149769. doi: 10.1016/j.scitotenv.2021.149769. Epub 2021 Aug 24"