Mercury mobilization in shrubland after a prescribed fire in NE Portugal: insight on soil organic matter composition and different aggregate size
Autor(a) principal: | |
---|---|
Data de Publicação: | 2023 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10198/28947 |
Resumo: | Soils constitute the major reservoir of mercury (Hg) in terrestrial ecosystems, whose stability may be threatened by wildfires. This research attempts to look at the effect of prescribed fire on the presence of Hg in a shrubland ecosystem from NE Portugal, delving into its relationship with soil aggregate size and the molecular composition of soil organic matter (SOM). During the prescribed fire, on average 347 mg Hg ha 1 were lost from the burnt aboveground biomass of shrubs and 263 mg Hg ha 1 from the combustion of the soil organic horizon. Overall, Hg concentration and pools in the mineral soil did not show significant changes due to burning, which highlights their role as long-term Hg reservoirs. The higher Hg concentrations found in smaller aggregates (<0.2 mm) compared to coarser ones (0.5–2 mm) are favored by the higher degree of organic matter decomposition (low C/ N ratio), rather than by greater total organic C contents. The Hg-enriched finest fraction of soil (<0.2 mm) could be more prone to be mobilized by erosion, whose potential arrival to water bodies increases the environmental concern for the Hg present in fire-affected soils. The SOM quality (molecular composition) and the main organic families, analyzed by Fourier-transform infrared spectroscopy in combination with multivariate statistical |
id |
RCAP_7b287871b9f8d75951e351f1d810d36c |
---|---|
oai_identifier_str |
oai:bibliotecadigital.ipb.pt:10198/28947 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Mercury mobilization in shrubland after a prescribed fire in NE Portugal: insight on soil organic matter composition and different aggregate sizeHgPrescribed burningRe-emissionATR-FT/IRChemometricsSOMSoils constitute the major reservoir of mercury (Hg) in terrestrial ecosystems, whose stability may be threatened by wildfires. This research attempts to look at the effect of prescribed fire on the presence of Hg in a shrubland ecosystem from NE Portugal, delving into its relationship with soil aggregate size and the molecular composition of soil organic matter (SOM). During the prescribed fire, on average 347 mg Hg ha 1 were lost from the burnt aboveground biomass of shrubs and 263 mg Hg ha 1 from the combustion of the soil organic horizon. Overall, Hg concentration and pools in the mineral soil did not show significant changes due to burning, which highlights their role as long-term Hg reservoirs. The higher Hg concentrations found in smaller aggregates (<0.2 mm) compared to coarser ones (0.5–2 mm) are favored by the higher degree of organic matter decomposition (low C/ N ratio), rather than by greater total organic C contents. The Hg-enriched finest fraction of soil (<0.2 mm) could be more prone to be mobilized by erosion, whose potential arrival to water bodies increases the environmental concern for the Hg present in fire-affected soils. The SOM quality (molecular composition) and the main organic families, analyzed by Fourier-transform infrared spectroscopy in combination with multivariate statisticalThis work was supported by the Interreg V-A Spain-Portugal program (POCTEP) 2014–2020 (Project 0701_TERRAMATER_1_E) funded by the European Regional Development Fund (FEDER), the EROFIRE project (PCIF/RPG/0079/2018) funded by FCT, Portugal and the InMerForEcos project (PID 2021-125114OB-I00) funded by Ministerio de Ciencia e Innovaciónn and Agencia Estatal de Investigaciónn (MCIN/ AEI) and FEDER. M. Méndez-López was supported by the predoctoral grant FPU (FPU17/05484) funded by the Ministerio de Educaciónn y Formación Profesional. N.T. Jiménez-Morillo was supported by a “Ramón y Cajal” contract (RYC2021-031253-I) funded by MCIN/AEI/10 .13039/501100011033 and the European Union “NextGenerationEU”/ PRTR”. The financial support of the Consellería de Cultura, Educación e Universidade (Xunta de Galicia) through the contract ED431C2021/46- GRC granted to the research group BV1 of the University of Vigo is also recognized. Open-access funding for this research has been provided by the University of Vigo/CISUG.ElsevierBiblioteca Digital do IPBMéndez-López, MelissaJiménez-Morillo, Nicasio TomásFonseca, FelíciaFigueiredo, Tomás deParente-Sendín, AndreaAlonso-Vega, FloraArias-Estévez, ManuelNóvoa-Muñoz, Juan Carlos2023-12-15T10:29:21Z20232023-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10198/28947engMéndez-López, Melissa; Jiménez-Morillo, Nicasio Tomás; Fonseca, Felicia; Figueiredo, Tomás de; Parente-Sendín, Andrea; Alonso-Vega, Flora; Arias-Estévez, Manuel; Nóvoa-Muñoz, Juan Carlos (2023). Mercury mobilization in shrubland after a prescribed fire in NE Portugal: Insight on soil organic matter composition and different aggregate size. Science of The Total Environment. ISSN 0048-9697. 904, p. 1-150048-969710.1016/j.scitotenv.2023.1675321879-1026info: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:RCAAP2023-12-20T01:19:10Zoai:bibliotecadigital.ipb.pt:10198/28947Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:55:05.887908Repositório 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 |
Mercury mobilization in shrubland after a prescribed fire in NE Portugal: insight on soil organic matter composition and different aggregate size |
title |
Mercury mobilization in shrubland after a prescribed fire in NE Portugal: insight on soil organic matter composition and different aggregate size |
spellingShingle |
Mercury mobilization in shrubland after a prescribed fire in NE Portugal: insight on soil organic matter composition and different aggregate size Méndez-López, Melissa Hg Prescribed burning Re-emission ATR-FT/IR Chemometrics SOM |
title_short |
Mercury mobilization in shrubland after a prescribed fire in NE Portugal: insight on soil organic matter composition and different aggregate size |
title_full |
Mercury mobilization in shrubland after a prescribed fire in NE Portugal: insight on soil organic matter composition and different aggregate size |
title_fullStr |
Mercury mobilization in shrubland after a prescribed fire in NE Portugal: insight on soil organic matter composition and different aggregate size |
title_full_unstemmed |
Mercury mobilization in shrubland after a prescribed fire in NE Portugal: insight on soil organic matter composition and different aggregate size |
title_sort |
Mercury mobilization in shrubland after a prescribed fire in NE Portugal: insight on soil organic matter composition and different aggregate size |
author |
Méndez-López, Melissa |
author_facet |
Méndez-López, Melissa Jiménez-Morillo, Nicasio Tomás Fonseca, Felícia Figueiredo, Tomás de Parente-Sendín, Andrea Alonso-Vega, Flora Arias-Estévez, Manuel Nóvoa-Muñoz, Juan Carlos |
author_role |
author |
author2 |
Jiménez-Morillo, Nicasio Tomás Fonseca, Felícia Figueiredo, Tomás de Parente-Sendín, Andrea Alonso-Vega, Flora Arias-Estévez, Manuel Nóvoa-Muñoz, Juan Carlos |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Biblioteca Digital do IPB |
dc.contributor.author.fl_str_mv |
Méndez-López, Melissa Jiménez-Morillo, Nicasio Tomás Fonseca, Felícia Figueiredo, Tomás de Parente-Sendín, Andrea Alonso-Vega, Flora Arias-Estévez, Manuel Nóvoa-Muñoz, Juan Carlos |
dc.subject.por.fl_str_mv |
Hg Prescribed burning Re-emission ATR-FT/IR Chemometrics SOM |
topic |
Hg Prescribed burning Re-emission ATR-FT/IR Chemometrics SOM |
description |
Soils constitute the major reservoir of mercury (Hg) in terrestrial ecosystems, whose stability may be threatened by wildfires. This research attempts to look at the effect of prescribed fire on the presence of Hg in a shrubland ecosystem from NE Portugal, delving into its relationship with soil aggregate size and the molecular composition of soil organic matter (SOM). During the prescribed fire, on average 347 mg Hg ha 1 were lost from the burnt aboveground biomass of shrubs and 263 mg Hg ha 1 from the combustion of the soil organic horizon. Overall, Hg concentration and pools in the mineral soil did not show significant changes due to burning, which highlights their role as long-term Hg reservoirs. The higher Hg concentrations found in smaller aggregates (<0.2 mm) compared to coarser ones (0.5–2 mm) are favored by the higher degree of organic matter decomposition (low C/ N ratio), rather than by greater total organic C contents. The Hg-enriched finest fraction of soil (<0.2 mm) could be more prone to be mobilized by erosion, whose potential arrival to water bodies increases the environmental concern for the Hg present in fire-affected soils. The SOM quality (molecular composition) and the main organic families, analyzed by Fourier-transform infrared spectroscopy in combination with multivariate statistical |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-12-15T10:29:21Z 2023 2023-01-01T00:00:00Z |
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/10198/28947 |
url |
http://hdl.handle.net/10198/28947 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Méndez-López, Melissa; Jiménez-Morillo, Nicasio Tomás; Fonseca, Felicia; Figueiredo, Tomás de; Parente-Sendín, Andrea; Alonso-Vega, Flora; Arias-Estévez, Manuel; Nóvoa-Muñoz, Juan Carlos (2023). Mercury mobilization in shrubland after a prescribed fire in NE Portugal: Insight on soil organic matter composition and different aggregate size. Science of The Total Environment. ISSN 0048-9697. 904, p. 1-15 0048-9697 10.1016/j.scitotenv.2023.167532 1879-1026 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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_ |
1799136437943140352 |