Spatial pattern and scale of soil N and P fractions under the influence of a leguminous shrub in a Pinus canariensis forest

Nitrogen-fixing plants alter the chemical properties of the soil beneath plant canopies, particularly by concentrating nitrogen-rich organic matter. We hypothesize that the presence of a legume canopy inside a plot will more greatly influence the spatial structure of soil nitrogen (N) than phosphoru...

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Autores: Fernández-Palacios, José María, Rodríguez, A., Durán, Jorge, Gallardo, Antonio
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2009
País:España
Institución:Universidad de La Laguna (ULL)
Repositorio:RIULL. Repositorio Institucional de la Universidad de La Laguna
OAI Identifier:oai:riull.ull.es:915/16463
Acceso en línea:http://riull.ull.es/xmlui/handle/915/16463
Access Level:acceso embargado
Palabra clave:Adenocarpus viscosus
Microbial biomass-N
Dissolved organic-N
Inorganic-N
Extractable-P
Soil texture
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spelling Spatial pattern and scale of soil N and P fractions under the influence of a leguminous shrub in a Pinus canariensis forestFernández-Palacios, José MaríaRodríguez, A.Durán, JorgeGallardo, AntonioAdenocarpus viscosusMicrobial biomass-NDissolved organic-NInorganic-NExtractable-PSoil textureNitrogen-fixing plants alter the chemical properties of the soil beneath plant canopies, particularly by concentrating nitrogen-rich organic matter. We hypothesize that the presence of a legume canopy inside a plot will more greatly influence the spatial structure of soil nitrogen (N) than phosphorus (P). We also investigated whether the effects of legume individuals on the soil properties beneath their canopies might be mediated by soil texture and water availability. Thus, we expected that the local effect of a legume canopy would be more conspicuous in nutrient-poor sandy soils than in nutrient-rich loamy soils. Moreover, the spatial pattern should differ during the wet (winter) and dry seasons (summer) because the microbial processes driving nutrient cycling are sensitive to water availability. To test these hypotheses, square plots (4 m×4 m or 3 m×3 m) were placed around isolated mature individuals of Adenocarpus viscosus in two pine forest stands of the Canary Islands (Spain) with contrasting soil textures (loamy and sandy soil). The spatial pattern and scale of microbial biomass-N (MB-N), dissolved organic-N (DON), and inorganic-N and -P fractions (NH4–N, NO3–N and PO4–P) were analyzed with geostatistical methods for two sampling dates (summer and winter). Soil variables with spatial structure demonstrated a greater spatial dependence in the loamy than sandy soil, with the exception of MB-N during summer. Except for NH4–N and NO3–N in winter plots, the spatial range was also lower in the sandy than the loamy soil. The legume canopy only had a clear effect on the spatial pattern of winter NH4–N, NO3–N, and DON in the sandy soil; no dependence was observed for PO4–P on the legume canopy in both soil types. Our results suggest that the presence of A. viscosus individuals may be an important source of spatial heterogeneity in the N content of the soil in these forests. However, soil texture and water content modulated the magnitude of the legume canopy effect on the spatial distribution of these N forms beneath canopies.Elsevier201921002009info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://riull.ull.es/xmlui/handle/915/16463reponame:RIULL. Repositorio Institucional de la Universidad de La Lagunainstname:Universidad de La Laguna (ULL)InglésGeoderma;Attribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/embargoedAccessoai:riull.ull.es:915/164632026-06-22T13:13:57Z
dc.title.none.fl_str_mv Spatial pattern and scale of soil N and P fractions under the influence of a leguminous shrub in a Pinus canariensis forest
title Spatial pattern and scale of soil N and P fractions under the influence of a leguminous shrub in a Pinus canariensis forest
spellingShingle Spatial pattern and scale of soil N and P fractions under the influence of a leguminous shrub in a Pinus canariensis forest
Fernández-Palacios, José María
Adenocarpus viscosus
Microbial biomass-N
Dissolved organic-N
Inorganic-N
Extractable-P
Soil texture
title_short Spatial pattern and scale of soil N and P fractions under the influence of a leguminous shrub in a Pinus canariensis forest
title_full Spatial pattern and scale of soil N and P fractions under the influence of a leguminous shrub in a Pinus canariensis forest
title_fullStr Spatial pattern and scale of soil N and P fractions under the influence of a leguminous shrub in a Pinus canariensis forest
title_full_unstemmed Spatial pattern and scale of soil N and P fractions under the influence of a leguminous shrub in a Pinus canariensis forest
title_sort Spatial pattern and scale of soil N and P fractions under the influence of a leguminous shrub in a Pinus canariensis forest
dc.creator.none.fl_str_mv Fernández-Palacios, José María
Rodríguez, A.
Durán, Jorge
Gallardo, Antonio
author Fernández-Palacios, José María
author_facet Fernández-Palacios, José María
Rodríguez, A.
Durán, Jorge
Gallardo, Antonio
author_role author
author2 Rodríguez, A.
Durán, Jorge
Gallardo, Antonio
author2_role author
author
author
dc.subject.none.fl_str_mv Adenocarpus viscosus
Microbial biomass-N
Dissolved organic-N
Inorganic-N
Extractable-P
Soil texture
topic Adenocarpus viscosus
Microbial biomass-N
Dissolved organic-N
Inorganic-N
Extractable-P
Soil texture
description Nitrogen-fixing plants alter the chemical properties of the soil beneath plant canopies, particularly by concentrating nitrogen-rich organic matter. We hypothesize that the presence of a legume canopy inside a plot will more greatly influence the spatial structure of soil nitrogen (N) than phosphorus (P). We also investigated whether the effects of legume individuals on the soil properties beneath their canopies might be mediated by soil texture and water availability. Thus, we expected that the local effect of a legume canopy would be more conspicuous in nutrient-poor sandy soils than in nutrient-rich loamy soils. Moreover, the spatial pattern should differ during the wet (winter) and dry seasons (summer) because the microbial processes driving nutrient cycling are sensitive to water availability. To test these hypotheses, square plots (4 m×4 m or 3 m×3 m) were placed around isolated mature individuals of Adenocarpus viscosus in two pine forest stands of the Canary Islands (Spain) with contrasting soil textures (loamy and sandy soil). The spatial pattern and scale of microbial biomass-N (MB-N), dissolved organic-N (DON), and inorganic-N and -P fractions (NH4–N, NO3–N and PO4–P) were analyzed with geostatistical methods for two sampling dates (summer and winter). Soil variables with spatial structure demonstrated a greater spatial dependence in the loamy than sandy soil, with the exception of MB-N during summer. Except for NH4–N and NO3–N in winter plots, the spatial range was also lower in the sandy than the loamy soil. The legume canopy only had a clear effect on the spatial pattern of winter NH4–N, NO3–N, and DON in the sandy soil; no dependence was observed for PO4–P on the legume canopy in both soil types. Our results suggest that the presence of A. viscosus individuals may be an important source of spatial heterogeneity in the N content of the soil in these forests. However, soil texture and water content modulated the magnitude of the legume canopy effect on the spatial distribution of these N forms beneath canopies.
publishDate 2009
dc.date.none.fl_str_mv 2009
2019
2100
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://riull.ull.es/xmlui/handle/915/16463
url http://riull.ull.es/xmlui/handle/915/16463
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Geoderma;
dc.rights.none.fl_str_mv Attribution-NonCommercial-NoDerivatives 4.0 Internacional
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/embargoedAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivatives 4.0 Internacional
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv embargoedAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:RIULL. Repositorio Institucional de la Universidad de La Laguna
instname:Universidad de La Laguna (ULL)
instname_str Universidad de La Laguna (ULL)
reponame_str RIULL. Repositorio Institucional de la Universidad de La Laguna
collection RIULL. Repositorio Institucional de la Universidad de La Laguna
repository.name.fl_str_mv
repository.mail.fl_str_mv
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