FN Archimer Export Format
PT J
TI Atmospheric deposition of elements and its relevance for nutrient budgets of tropical forests
BT 
AF Van Langenhove, Leandro
   Verryckt, Lore T.
   Bréchet, Laëtitia
   Courtois, Elodie A.
   Stahl, Clement
   Hofhansl, Florian
   Bauters, Marijn
   Sardans, Jordi
   Boeckx, Pascal
   Fransen, Erik
   Peñuelas, Josep
   Janssens, Ivan A.
AS 1:1;2:1;3:1;4:2;5:3;6:4;7:5;8:6,7;9:5;10:8,9;11:6,7;12:1;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;
C1 Centre of Excellence PLECO (Plants and Ecosystems), Department of Biology, University of Antwerp, Wilrijk, Belgium
   Laboratoire Ecologie, évolution, Interactions des Systèmes Amazoniens (LEEISA), Université de Guyane, CNRS, IFREMER, French Guiana, 97300, Cayenne, France
   INRA, UMR EcoFoG, CNRS, Cirad, AgroParisTech, Université des Antilles, Université de Guyane, 97387, Kourou, France
   International Institute for Applied Systems Analysis (IIASA), Schlossplatz 1, 2361, Laxenburg, Austria
   Isotope Bioscience Laboratory–ISOFYS, Ghent University, 9000, Gent, Belgium
   CSIC, Global Ecology Unit CREAF-CSIC-UAB, 08193, Bellaterra, Catalonia, Spain
   CREAF, 08193, Cerdanyola del Vallès, Catalonia, Spain
   Center of Medical Genetics, University of Antwerp, Prins Boudewijnlaan 43/6, 2650, Edegem, Antwerp, Belgium
   StatUa Center for Statistics, University of Antwerp, Prinsstraat 13, 2000, Antwerp, Belgium
C2 UNIV ANTWERP, BELGIUM
   UNIV GUYANE, FRANCE
   INRA, FRANCE
   IIASA, AUSTRIA
   UNIV GHENT, BELGIUM
   CSIC, SPAIN
   CREAF, SPAIN
   UNIV ANTWERP, BELGIUM
   UNIV ANTWERP, BELGIUM
UM LEEISA
IN WOS Cotutelle UMR
   copubli-france
   copubli-europe
IF 4.825
TC 31
UR https://archimer.ifremer.fr/doc/00629/74123/73572.pdf
LA English
DT Article
DE ;Throughfall;Litterfall;Nutrient cycling;Nitrogen;Phosphorus;Potassium
AB Atmospheric deposition is an important component of the nutrient cycles of terrestrial ecosystems, but field measurements are especially scarce in tropical regions. In this study we analysed 15 months of precipitation chemistry collected in an old growth tropical forest located in French Guiana. We measured nutrient inputs via bulk precipitation and throughfall and used the canopy budget model to estimate nutrient fluxes via canopy exchange and dry deposition. Based on this method we quantified net fluxes of macronutrients and compared their contribution to internal cycling rates via litterfall. Our results suggest that while atmospheric deposition of nitrogen was relatively high (13 kg ha−1 year−1), and mainly in organic forms, the N inputs via litterfall were an order of magnitude higher. In contrast to nitrogen, we found that atmospheric deposition of phosphorus (0.5 kg ha−1 year−1) supplied up to one third of the annual litterfall input to the forest floor. Most strikingly, combined annual inputs of potassium via atmospheric deposition (14 kg ha−1 year−1) and canopy leaching (22 kg ha−1 year−1) were three times larger than internal nutrient recycling via litterfall (11 kg ha−1 year−1). We conclude that atmospheric deposition of phosphorus and especially potassium may play an important role in sustaining the productivity of this old-growth tropical rainforest. 
PY 2020
PD JUL
SO Biogeochemistry
SN 0168-2563
PU Springer Science and Business Media LLC
VL 149
IS 2
UT 000532097400001
BP 175
EP 193
DI 10.1007/s10533-020-00673-8
ID 74123
ER

EF