Time- and age-related effects of experimentally simulated nitrogen deposition on the functioning of montane heathland ecosystems

P. 149-159

Detalles Bibliográficos
Autores: Calvo Fernández, Javier, Taboada Palomares, Ángela, Fichtner, Andreas, Härdtle, Werner, Calvo Galván, María Leonor, Marcos Porras, Elena María
Tipo de recurso: artículo
Fecha de publicación:2017
País:España
Institución:Universidad Rey Juan Carlos
Repositorio:BULERIA. Repositorio Institucional de la Universidad de León
OAI Identifier:oai:buleria.unileon.es:10612/7422
Acceso en línea:http://hdl.handle.net/10612/7422
Access Level:acceso abierto
Palabra clave:Ecología. Medio ambiente
Air pollution
Calluna vulgaris heathland
Plant-litter-soil nutrient relationship
Extracellular enzymatic activity
Soil microbial biomass
Ericoid mycorrhizal colonization
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spelling Time- and age-related effects of experimentally simulated nitrogen deposition on the functioning of montane heathland ecosystemsCalvo Fernández, JavierTaboada Palomares, ÁngelaFichtner, AndreasHärdtle, WernerCalvo Galván, María LeonorMarcos Porras, Elena MaríaEcología. Medio ambienteAir pollutionCalluna vulgaris heathlandPlant-litter-soil nutrient relationshipExtracellular enzymatic activitySoil microbial biomassEricoid mycorrhizal colonizationP. 149-159Ecosystems adapted to low nitrogen (N) conditions such as Calluna-heathlands are especially sensitive to enhanced atmospheric N deposition that affects many aspects of ecosystem functioning like nutrient cycling, soil properties and plant-microbial-enzyme relationships. We investigated the effects of five levels of experimentally- simulated N deposition rates (i.e., N fertilization treatments: 0, 10, 20 and 50 kg N ha− 1 yr− 1 for 3 years, and 56 kg N ha− 1 yr− 1 for 10 years) on: plant, litter, microbial biomass and soil nutrient contents, soil extracellular enzymatic activities, and plant root ericoid mycorrhizal colonization. The study was conducted in marginal montane Calluna-heathlands at different developmental stages resulting from management (young/building-phase and mature-phase). Our findings revealed that many soil properties did not show a statistically significant response to the experimental addition of N, including: total N, organic carbon (C), C:N ratio, extractable N-NO3 −, available phosphorus (P), urease and β-glucosidase enzyme activities, and microbial biomass C and N. Our results also evidenced a considerable positive impact of chronic (10-year) high-N loading on soil extractable N-NH4 +, acid phosphatase enzyme activity, Calluna root mycorrhizal colonization by ericoid fungi, Calluna shoot N and P contents, and litter N content and N:P ratio. The age of heathland vegetation influenced the effects of N addition on ericoid mycorrhizal colonization, resulting in higher colonized roots in young heathlands at the control, low and medium N-input rates; and in mature ones at the high and chronically high N rates. Also, young heathlands exhibited greater soil extractable N-NO3 −, available P, microbial biomass N, Calluna shoot N and P contents, and litter N content, compared to mature ones. Our results highlighted that accounting for the N-input load and duration, as well as the developmental stage of the vegetation, is important for assessing the effects of added N, particularly at the heathlands' southern distribution limit.SIElsevierEcologiaFacultad de Ciencias Biologicas y Ambientales20172017info:eu-repo/semantics/articlehttp://hdl.handle.net/10612/7422reponame:BULERIA. Repositorio Institucional de la Universidad de Leóninstname:Universidad Rey Juan CarlosInglésinfo:eu-repo/semantics/openAccessoai:buleria.unileon.es:10612/74222026-06-24T12:43:27Z
dc.title.none.fl_str_mv Time- and age-related effects of experimentally simulated nitrogen deposition on the functioning of montane heathland ecosystems
title Time- and age-related effects of experimentally simulated nitrogen deposition on the functioning of montane heathland ecosystems
spellingShingle Time- and age-related effects of experimentally simulated nitrogen deposition on the functioning of montane heathland ecosystems
Calvo Fernández, Javier
Ecología. Medio ambiente
Air pollution
Calluna vulgaris heathland
Plant-litter-soil nutrient relationship
Extracellular enzymatic activity
Soil microbial biomass
Ericoid mycorrhizal colonization
title_short Time- and age-related effects of experimentally simulated nitrogen deposition on the functioning of montane heathland ecosystems
title_full Time- and age-related effects of experimentally simulated nitrogen deposition on the functioning of montane heathland ecosystems
title_fullStr Time- and age-related effects of experimentally simulated nitrogen deposition on the functioning of montane heathland ecosystems
title_full_unstemmed Time- and age-related effects of experimentally simulated nitrogen deposition on the functioning of montane heathland ecosystems
title_sort Time- and age-related effects of experimentally simulated nitrogen deposition on the functioning of montane heathland ecosystems
dc.creator.none.fl_str_mv Calvo Fernández, Javier
Taboada Palomares, Ángela
Fichtner, Andreas
Härdtle, Werner
Calvo Galván, María Leonor
Marcos Porras, Elena María
author Calvo Fernández, Javier
author_facet Calvo Fernández, Javier
Taboada Palomares, Ángela
Fichtner, Andreas
Härdtle, Werner
Calvo Galván, María Leonor
Marcos Porras, Elena María
author_role author
author2 Taboada Palomares, Ángela
Fichtner, Andreas
Härdtle, Werner
Calvo Galván, María Leonor
Marcos Porras, Elena María
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Ecologia
Facultad de Ciencias Biologicas y Ambientales
dc.subject.none.fl_str_mv Ecología. Medio ambiente
Air pollution
Calluna vulgaris heathland
Plant-litter-soil nutrient relationship
Extracellular enzymatic activity
Soil microbial biomass
Ericoid mycorrhizal colonization
topic Ecología. Medio ambiente
Air pollution
Calluna vulgaris heathland
Plant-litter-soil nutrient relationship
Extracellular enzymatic activity
Soil microbial biomass
Ericoid mycorrhizal colonization
description P. 149-159
publishDate 2017
dc.date.none.fl_str_mv 2017
2017
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10612/7422
url http://hdl.handle.net/10612/7422
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.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:BULERIA. Repositorio Institucional de la Universidad de León
instname:Universidad Rey Juan Carlos
instname_str Universidad Rey Juan Carlos
reponame_str BULERIA. Repositorio Institucional de la Universidad de León
collection BULERIA. Repositorio Institucional de la Universidad de León
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869418581794488321
score 15,300719

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