Impact of nutrient additions on free-living nitrogen fixation in litter and soil of two French-Guianese lowland tropical forests
In tropical forests, free-living Biological nitrogen (N) fixation (BNF) in soil and litter tends to decrease when substrate N concentrations increase, whereas increasing phosphorus (P) and molybdenum (Mo) soil and litter concentrations have been shown to stimulate free-living BNF rates. Yet, very few studies explored the effects of adding N, P, and Mo together in a single large-scale fertilization experiment, which would teach us which of these elements constrain or limit BNF activities. At two distinct forest sites in French Guiana, we performed a 3-year in situ nutrient addition study to explore the effects of N, P, and Mo additions on leaf litter and soil BNF. Additionally, we conducted a short-term laboratory study with the same nutrient addition treatments (+N, +N+P, +P, +Mo, and +P+Mo). We found that N additions alone suppressed litter free-living BNF in the field, but not in the short-term laboratory study, while litter free-living BNF remained unchanged in response to N+P additions. Additionally, we found that P and P+Mo additions stimulated BNF in leaf litter, both in the field and in the lab, while Mo alone yielded no changes. Soil BNF increased with P and P+Mo additions in only one of the field sites, while in the other site soil BNF increased with Mo and P+Mo additions. We concluded that increased substrate N concentrations suppress BNF. Moreover, both P and Mo have the potential to limit free-living BNF in these tropical forests, but the balance between P versus Mo limitation is determined by site-specific characteristics of nutrient supply and demand.
Main Authors: | , , , , , , , , , , , , , , , |
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Format: | article biblioteca |
Language: | eng |
Subjects: | Fixation de l'azote, litière végétale, forêt tropicale, litière forestière, substance nutritive, Fixation biologique de l'azote, biologie du sol, substrat de culture, phosphore, http://aims.fao.org/aos/agrovoc/c_5196, http://aims.fao.org/aos/agrovoc/c_24064, http://aims.fao.org/aos/agrovoc/c_24904, http://aims.fao.org/aos/agrovoc/c_3047, http://aims.fao.org/aos/agrovoc/c_5274, http://aims.fao.org/aos/agrovoc/c_27742, http://aims.fao.org/aos/agrovoc/c_7160, http://aims.fao.org/aos/agrovoc/c_3393, http://aims.fao.org/aos/agrovoc/c_5804, http://aims.fao.org/aos/agrovoc/c_3093, http://aims.fao.org/aos/agrovoc/c_3081, |
Online Access: | http://agritrop.cirad.fr/607058/ http://agritrop.cirad.fr/607058/1/607058.pdf |
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Fixation de l'azote litière végétale forêt tropicale litière forestière substance nutritive Fixation biologique de l'azote biologie du sol substrat de culture phosphore http://aims.fao.org/aos/agrovoc/c_5196 http://aims.fao.org/aos/agrovoc/c_24064 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_3047 http://aims.fao.org/aos/agrovoc/c_5274 http://aims.fao.org/aos/agrovoc/c_27742 http://aims.fao.org/aos/agrovoc/c_7160 http://aims.fao.org/aos/agrovoc/c_3393 http://aims.fao.org/aos/agrovoc/c_5804 http://aims.fao.org/aos/agrovoc/c_3093 http://aims.fao.org/aos/agrovoc/c_3081 Fixation de l'azote litière végétale forêt tropicale litière forestière substance nutritive Fixation biologique de l'azote biologie du sol substrat de culture phosphore http://aims.fao.org/aos/agrovoc/c_5196 http://aims.fao.org/aos/agrovoc/c_24064 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_3047 http://aims.fao.org/aos/agrovoc/c_5274 http://aims.fao.org/aos/agrovoc/c_27742 http://aims.fao.org/aos/agrovoc/c_7160 http://aims.fao.org/aos/agrovoc/c_3393 http://aims.fao.org/aos/agrovoc/c_5804 http://aims.fao.org/aos/agrovoc/c_3093 http://aims.fao.org/aos/agrovoc/c_3081 |
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Fixation de l'azote litière végétale forêt tropicale litière forestière substance nutritive Fixation biologique de l'azote biologie du sol substrat de culture phosphore http://aims.fao.org/aos/agrovoc/c_5196 http://aims.fao.org/aos/agrovoc/c_24064 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_3047 http://aims.fao.org/aos/agrovoc/c_5274 http://aims.fao.org/aos/agrovoc/c_27742 http://aims.fao.org/aos/agrovoc/c_7160 http://aims.fao.org/aos/agrovoc/c_3393 http://aims.fao.org/aos/agrovoc/c_5804 http://aims.fao.org/aos/agrovoc/c_3093 http://aims.fao.org/aos/agrovoc/c_3081 Fixation de l'azote litière végétale forêt tropicale litière forestière substance nutritive Fixation biologique de l'azote biologie du sol substrat de culture phosphore http://aims.fao.org/aos/agrovoc/c_5196 http://aims.fao.org/aos/agrovoc/c_24064 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_3047 http://aims.fao.org/aos/agrovoc/c_5274 http://aims.fao.org/aos/agrovoc/c_27742 http://aims.fao.org/aos/agrovoc/c_7160 http://aims.fao.org/aos/agrovoc/c_3393 http://aims.fao.org/aos/agrovoc/c_5804 http://aims.fao.org/aos/agrovoc/c_3093 http://aims.fao.org/aos/agrovoc/c_3081 Van Langenhove, Leandro Depaepe, Thomas Verryckt, Lore T. Vallicrosa, Helena Fuchslueger, Lucia Lugli, Laynara F. Bréchet, Laëtitia Ogaya, Romà LLusià, Joan Urbina, Ifigenia Gargallo‐Garriga, Albert Grau, Oriol Richter, Andreas Peñuelas, Josep Van Der Straeten, Dominique Janssens, Ivan A. Impact of nutrient additions on free-living nitrogen fixation in litter and soil of two French-Guianese lowland tropical forests |
description |
In tropical forests, free-living Biological nitrogen (N) fixation (BNF) in soil and litter tends to decrease when substrate N concentrations increase, whereas increasing phosphorus (P) and molybdenum (Mo) soil and litter concentrations have been shown to stimulate free-living BNF rates. Yet, very few studies explored the effects of adding N, P, and Mo together in a single large-scale fertilization experiment, which would teach us which of these elements constrain or limit BNF activities. At two distinct forest sites in French Guiana, we performed a 3-year in situ nutrient addition study to explore the effects of N, P, and Mo additions on leaf litter and soil BNF. Additionally, we conducted a short-term laboratory study with the same nutrient addition treatments (+N, +N+P, +P, +Mo, and +P+Mo). We found that N additions alone suppressed litter free-living BNF in the field, but not in the short-term laboratory study, while litter free-living BNF remained unchanged in response to N+P additions. Additionally, we found that P and P+Mo additions stimulated BNF in leaf litter, both in the field and in the lab, while Mo alone yielded no changes. Soil BNF increased with P and P+Mo additions in only one of the field sites, while in the other site soil BNF increased with Mo and P+Mo additions. We concluded that increased substrate N concentrations suppress BNF. Moreover, both P and Mo have the potential to limit free-living BNF in these tropical forests, but the balance between P versus Mo limitation is determined by site-specific characteristics of nutrient supply and demand. |
format |
article |
topic_facet |
Fixation de l'azote litière végétale forêt tropicale litière forestière substance nutritive Fixation biologique de l'azote biologie du sol substrat de culture phosphore http://aims.fao.org/aos/agrovoc/c_5196 http://aims.fao.org/aos/agrovoc/c_24064 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_3047 http://aims.fao.org/aos/agrovoc/c_5274 http://aims.fao.org/aos/agrovoc/c_27742 http://aims.fao.org/aos/agrovoc/c_7160 http://aims.fao.org/aos/agrovoc/c_3393 http://aims.fao.org/aos/agrovoc/c_5804 http://aims.fao.org/aos/agrovoc/c_3093 http://aims.fao.org/aos/agrovoc/c_3081 |
author |
Van Langenhove, Leandro Depaepe, Thomas Verryckt, Lore T. Vallicrosa, Helena Fuchslueger, Lucia Lugli, Laynara F. Bréchet, Laëtitia Ogaya, Romà LLusià, Joan Urbina, Ifigenia Gargallo‐Garriga, Albert Grau, Oriol Richter, Andreas Peñuelas, Josep Van Der Straeten, Dominique Janssens, Ivan A. |
author_facet |
Van Langenhove, Leandro Depaepe, Thomas Verryckt, Lore T. Vallicrosa, Helena Fuchslueger, Lucia Lugli, Laynara F. Bréchet, Laëtitia Ogaya, Romà LLusià, Joan Urbina, Ifigenia Gargallo‐Garriga, Albert Grau, Oriol Richter, Andreas Peñuelas, Josep Van Der Straeten, Dominique Janssens, Ivan A. |
author_sort |
Van Langenhove, Leandro |
title |
Impact of nutrient additions on free-living nitrogen fixation in litter and soil of two French-Guianese lowland tropical forests |
title_short |
Impact of nutrient additions on free-living nitrogen fixation in litter and soil of two French-Guianese lowland tropical forests |
title_full |
Impact of nutrient additions on free-living nitrogen fixation in litter and soil of two French-Guianese lowland tropical forests |
title_fullStr |
Impact of nutrient additions on free-living nitrogen fixation in litter and soil of two French-Guianese lowland tropical forests |
title_full_unstemmed |
Impact of nutrient additions on free-living nitrogen fixation in litter and soil of two French-Guianese lowland tropical forests |
title_sort |
impact of nutrient additions on free-living nitrogen fixation in litter and soil of two french-guianese lowland tropical forests |
url |
http://agritrop.cirad.fr/607058/ http://agritrop.cirad.fr/607058/1/607058.pdf |
work_keys_str_mv |
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dig-cirad-fr-6070582024-01-29T06:16:11Z http://agritrop.cirad.fr/607058/ http://agritrop.cirad.fr/607058/ Impact of nutrient additions on free-living nitrogen fixation in litter and soil of two French-Guianese lowland tropical forests. Van Langenhove Leandro, Depaepe Thomas, Verryckt Lore T., Vallicrosa Helena, Fuchslueger Lucia, Lugli Laynara F., Bréchet Laëtitia, Ogaya Romà, LLusià Joan, Urbina Ifigenia, Gargallo‐Garriga Albert, Grau Oriol, Richter Andreas, Peñuelas Josep, Van Der Straeten Dominique, Janssens Ivan A.. 2021. Journal of Geophysical Research: Biogeosciences, 126 (7):e2020JG006023, 15 p.https://doi.org/10.1029/2020JG006023 <https://doi.org/10.1029/2020JG006023> Impact of nutrient additions on free-living nitrogen fixation in litter and soil of two French-Guianese lowland tropical forests Van Langenhove, Leandro Depaepe, Thomas Verryckt, Lore T. Vallicrosa, Helena Fuchslueger, Lucia Lugli, Laynara F. Bréchet, Laëtitia Ogaya, Romà LLusià, Joan Urbina, Ifigenia Gargallo‐Garriga, Albert Grau, Oriol Richter, Andreas Peñuelas, Josep Van Der Straeten, Dominique Janssens, Ivan A. eng 2021 Journal of Geophysical Research: Biogeosciences Fixation de l'azote litière végétale forêt tropicale litière forestière substance nutritive Fixation biologique de l'azote biologie du sol substrat de culture phosphore http://aims.fao.org/aos/agrovoc/c_5196 http://aims.fao.org/aos/agrovoc/c_24064 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_3047 http://aims.fao.org/aos/agrovoc/c_5274 http://aims.fao.org/aos/agrovoc/c_27742 http://aims.fao.org/aos/agrovoc/c_7160 http://aims.fao.org/aos/agrovoc/c_3393 http://aims.fao.org/aos/agrovoc/c_5804 Guyane française France http://aims.fao.org/aos/agrovoc/c_3093 http://aims.fao.org/aos/agrovoc/c_3081 In tropical forests, free-living Biological nitrogen (N) fixation (BNF) in soil and litter tends to decrease when substrate N concentrations increase, whereas increasing phosphorus (P) and molybdenum (Mo) soil and litter concentrations have been shown to stimulate free-living BNF rates. Yet, very few studies explored the effects of adding N, P, and Mo together in a single large-scale fertilization experiment, which would teach us which of these elements constrain or limit BNF activities. At two distinct forest sites in French Guiana, we performed a 3-year in situ nutrient addition study to explore the effects of N, P, and Mo additions on leaf litter and soil BNF. Additionally, we conducted a short-term laboratory study with the same nutrient addition treatments (+N, +N+P, +P, +Mo, and +P+Mo). We found that N additions alone suppressed litter free-living BNF in the field, but not in the short-term laboratory study, while litter free-living BNF remained unchanged in response to N+P additions. Additionally, we found that P and P+Mo additions stimulated BNF in leaf litter, both in the field and in the lab, while Mo alone yielded no changes. Soil BNF increased with P and P+Mo additions in only one of the field sites, while in the other site soil BNF increased with Mo and P+Mo additions. We concluded that increased substrate N concentrations suppress BNF. Moreover, both P and Mo have the potential to limit free-living BNF in these tropical forests, but the balance between P versus Mo limitation is determined by site-specific characteristics of nutrient supply and demand. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/607058/1/607058.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1029/2020JG006023 10.1029/2020JG006023 info:eu-repo/semantics/altIdentifier/doi/10.1029/2020JG006023 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1029/2020JG006023 info:eu-repo/grantAgreement/ERC//610028//(EU) Effects of phosphorus limitations on Life, Earth system and Society/IMBALANCE-P info:eu-repo/grantAgreement/ERC//ANR-10-LABX-2501//(FRA) CEnter of the study of Biodiversity in Amazonia/CEBA info:eu-repo/grantAgreement/ERC//ANR-11-INBS-0001//(FRA) ANAEE-Services/ANAEE-FR |