Fire effects on C and H isotopic composition in plant biomass and soil: Bulk and particle size fractions
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/31675 https://doi.org/10.1016/j.scitotenv.2020.141417 |
Resumo: | This work studies carbon (C) and hydrogen (H) isotope composition of plant biomass and soil organic matter (SOM) in an attempt to assess both, changes exerted by fire and possible inputs of charred materials to the soil after a wildfire. Isotope composition of bulk soil, soil particle size fractions and biomass of the dominant standing vegetation in the area (Quercus suber) from Doñana National Park (SW-Spain) were studied by isotope ratio mass spectrometry (IRMS). SOM C isotope composition indicates the occurrence of two SOM pools with different degree of alteration. Coarse soil fractions (>0.5 mm) were found 13C depleted with δ13C values close to those in leaf biomass, pointing to a predominance of poorly transformed SOM. Conversely, fine fractions (<0.1 mm) were found enriched in 13C as corresponds to a more humified SOM. The fire produced no changes in this trend, although a consistent 13C enrichment (c. 1‰) was observed in all soil fractions with decreasing size. Concerning H isotopes, the coarse fractions (>0.5 mm) displayed significant lower δ2H values than the intermediate and fine ones (<0.5 mm), again similar to those in leaf biomass (c. -80‰), whereas the fine fractions were found deuterium (2H)-enriched with significant higher δ2H values (c. 50‰), suggesting physical speciation of H depending on soil particle size. The fire produced a significant 2H depletion (Δ2H c. -10‰) in the finer fractions (<0.1 mm). The study of stable isotope analysis added new information and complements the results obtained by other proxies to better understand the effect of fire on SOM |
id |
RCAP_33b02550026aa3751070ed5dfdd2cceb |
---|---|
oai_identifier_str |
oai:dspace.uevora.pt:10174/31675 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Fire effects on C and H isotopic composition in plant biomass and soil: Bulk and particle size fractionsCharred biomassd13Cd2HIsotope fractionationMediterranean soilSieved soil fractionsSoil organic matterWildfireThis work studies carbon (C) and hydrogen (H) isotope composition of plant biomass and soil organic matter (SOM) in an attempt to assess both, changes exerted by fire and possible inputs of charred materials to the soil after a wildfire. Isotope composition of bulk soil, soil particle size fractions and biomass of the dominant standing vegetation in the area (Quercus suber) from Doñana National Park (SW-Spain) were studied by isotope ratio mass spectrometry (IRMS). SOM C isotope composition indicates the occurrence of two SOM pools with different degree of alteration. Coarse soil fractions (>0.5 mm) were found 13C depleted with δ13C values close to those in leaf biomass, pointing to a predominance of poorly transformed SOM. Conversely, fine fractions (<0.1 mm) were found enriched in 13C as corresponds to a more humified SOM. The fire produced no changes in this trend, although a consistent 13C enrichment (c. 1‰) was observed in all soil fractions with decreasing size. Concerning H isotopes, the coarse fractions (>0.5 mm) displayed significant lower δ2H values than the intermediate and fine ones (<0.5 mm), again similar to those in leaf biomass (c. -80‰), whereas the fine fractions were found deuterium (2H)-enriched with significant higher δ2H values (c. 50‰), suggesting physical speciation of H depending on soil particle size. The fire produced a significant 2H depletion (Δ2H c. -10‰) in the finer fractions (<0.1 mm). The study of stable isotope analysis added new information and complements the results obtained by other proxies to better understand the effect of fire on SOMElsevier2022-03-30T16:32:56Z2022-03-302020-12-20T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/31675http://hdl.handle.net/10174/31675https://doi.org/10.1016/j.scitotenv.2020.141417porJiménez-Morillo NT, Almendros G, González-Vila FJ, Jordán A, Zavala LM, De la Rosa JM, González-Pérez JA (2020). Fire effects on C and H isotopic composition in plant biomass and soil: Bulk and particle size fractions. Sci. Total Environ. 749, 141417.Science of the Total Environmentntjm@uevora.ptndndndndndnd396Jiménez-Morillo, Nicasio T.Almendros, GonzaloGonzález-Vila, Francisco J.Jordán, AntonioZavala, Lorena M.De la Rosa, José M.González-Pérez, José A.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T19:31:19Zoai:dspace.uevora.pt:10174/31675Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:20:41.935423Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Fire effects on C and H isotopic composition in plant biomass and soil: Bulk and particle size fractions |
title |
Fire effects on C and H isotopic composition in plant biomass and soil: Bulk and particle size fractions |
spellingShingle |
Fire effects on C and H isotopic composition in plant biomass and soil: Bulk and particle size fractions Jiménez-Morillo, Nicasio T. Charred biomass d13C d2H Isotope fractionation Mediterranean soil Sieved soil fractions Soil organic matter Wildfire |
title_short |
Fire effects on C and H isotopic composition in plant biomass and soil: Bulk and particle size fractions |
title_full |
Fire effects on C and H isotopic composition in plant biomass and soil: Bulk and particle size fractions |
title_fullStr |
Fire effects on C and H isotopic composition in plant biomass and soil: Bulk and particle size fractions |
title_full_unstemmed |
Fire effects on C and H isotopic composition in plant biomass and soil: Bulk and particle size fractions |
title_sort |
Fire effects on C and H isotopic composition in plant biomass and soil: Bulk and particle size fractions |
author |
Jiménez-Morillo, Nicasio T. |
author_facet |
Jiménez-Morillo, Nicasio T. Almendros, Gonzalo González-Vila, Francisco J. Jordán, Antonio Zavala, Lorena M. De la Rosa, José M. González-Pérez, José A. |
author_role |
author |
author2 |
Almendros, Gonzalo González-Vila, Francisco J. Jordán, Antonio Zavala, Lorena M. De la Rosa, José M. González-Pérez, José A. |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Jiménez-Morillo, Nicasio T. Almendros, Gonzalo González-Vila, Francisco J. Jordán, Antonio Zavala, Lorena M. De la Rosa, José M. González-Pérez, José A. |
dc.subject.por.fl_str_mv |
Charred biomass d13C d2H Isotope fractionation Mediterranean soil Sieved soil fractions Soil organic matter Wildfire |
topic |
Charred biomass d13C d2H Isotope fractionation Mediterranean soil Sieved soil fractions Soil organic matter Wildfire |
description |
This work studies carbon (C) and hydrogen (H) isotope composition of plant biomass and soil organic matter (SOM) in an attempt to assess both, changes exerted by fire and possible inputs of charred materials to the soil after a wildfire. Isotope composition of bulk soil, soil particle size fractions and biomass of the dominant standing vegetation in the area (Quercus suber) from Doñana National Park (SW-Spain) were studied by isotope ratio mass spectrometry (IRMS). SOM C isotope composition indicates the occurrence of two SOM pools with different degree of alteration. Coarse soil fractions (>0.5 mm) were found 13C depleted with δ13C values close to those in leaf biomass, pointing to a predominance of poorly transformed SOM. Conversely, fine fractions (<0.1 mm) were found enriched in 13C as corresponds to a more humified SOM. The fire produced no changes in this trend, although a consistent 13C enrichment (c. 1‰) was observed in all soil fractions with decreasing size. Concerning H isotopes, the coarse fractions (>0.5 mm) displayed significant lower δ2H values than the intermediate and fine ones (<0.5 mm), again similar to those in leaf biomass (c. -80‰), whereas the fine fractions were found deuterium (2H)-enriched with significant higher δ2H values (c. 50‰), suggesting physical speciation of H depending on soil particle size. The fire produced a significant 2H depletion (Δ2H c. -10‰) in the finer fractions (<0.1 mm). The study of stable isotope analysis added new information and complements the results obtained by other proxies to better understand the effect of fire on SOM |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-20T00:00:00Z 2022-03-30T16:32:56Z 2022-03-30 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/31675 http://hdl.handle.net/10174/31675 https://doi.org/10.1016/j.scitotenv.2020.141417 |
url |
http://hdl.handle.net/10174/31675 https://doi.org/10.1016/j.scitotenv.2020.141417 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Jiménez-Morillo NT, Almendros G, González-Vila FJ, Jordán A, Zavala LM, De la Rosa JM, González-Pérez JA (2020). Fire effects on C and H isotopic composition in plant biomass and soil: Bulk and particle size fractions. Sci. Total Environ. 749, 141417. Science of the Total Environment ntjm@uevora.pt nd nd nd nd nd nd 396 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
_version_ |
1799136688873668608 |