Restorative pyric herbivory practices in shrub-encroached grasslands enhance nutrient resource availability and spatial heterogeneity

Canals Tresserras, Rosa María; Múgica Azpilicueta, Leire; Durán Lázaro, María; San Emeterio Garciandía, Leticia

Restorative pyric herbivory practices in shrub-encroached grasslands enhance nutrient resource availability and spatial heterogeneity

dc.contributor.author	Canals Tresserras, Rosa María
dc.contributor.author	Múgica Azpilicueta, Leire
dc.contributor.author	Durán Lázaro, María
dc.contributor.author	San Emeterio Garciandía, Leticia
dc.contributor.department	Agronomía, Biotecnología y Alimentación	es_ES
dc.contributor.department	Agronomia, Bioteknologia eta Elikadura	eu
dc.contributor.department	Institute on Innovation and Sustainable Development in Food Chain - ISFOOD	en
dc.date.accessioned	2024-10-18T10:18:12Z
dc.date.available	2024-10-18T10:18:12Z
dc.date.issued	2024-05-31
dc.date.updated	2024-10-18T10:06:14Z
dc.description.abstract	Pyric herbivory (PH), the combination of prescribed burnings and targeted herbivory, is a promising tool for landscape restoration that emulates historical disturbance regimes. Nitrogen (N) and phosphorus (P) are crucial nutrients for plant growth and although several studies have analysed the single effects of fire or grazers in their availability, the combined effect of both disturbances in the soil nutrient budgets have been rarely considered. This research was planned to analyse the 2-year impact of PH restoration practices on the availability of N and P in two Ulex gallii-encroached grasslands in the Pyrenees. We monitored available forms of N and P for two years using periodic replacements of ion exchange resins to test the hypothesis that mid-term effect of targeted grazing was more relevant than short-term effect of burning. Additionally, we investigated the role of temperature and precipitation on nutrients accumulation and compared its significance to management factors. Burning transformed vegetation and litter into a spatially heterogeneous layer of ash and charred material, which resulted in a variable availability of N and P at the rhizosphere level. After two periods of PH, nutrient availability was higher in soils from grazed plots compared to ungrazed, and the impacts of early burns were scarcely discernible. Nitrate was found to be the most rainfall-dependent nutrient, and grazing also affected its spatial distribution. Our results suggest that the heterogeneous nutrient enrichment enhanced by PH is important for promoting the establishment of a diverse pool of plant species, including both N2-fixing and non-fixing species. In these rainy areas, the use of burnings alone, without grazing, may perpetuate the dynamics of N2-fixing shrub encroachment.	en
dc.description.sponsorship	The study was financially supported by the Spanish Ministry of Science and Innovation through the PYRICLABS project (PID2020-116786RB-C31), the European Regional Development Fund through the Interreg Sudoe Project OPEN2PRESERVE (SOE2/P5/E0804) and by the Biodiversity Foundation of the Ministry for Ecological Transition and the Demographic Challenge (MITECO) in the framework of the Recovery, Transformation and Resilience Plan (PRTR), funded by the European Union-NextGenerationEU (COMPÁS project). María Durán was supported by an UPNA's doctorate scholarship and Leire Múgica by an UPNA's doctorate scholarship and by 'Convocatoria de ayudas para la Recualificación del Sistema Universitario Español para 2021-2023, Universidad Pública de Navarra' (financed by the European Union - NextGenerationEU).
dc.format.mimetype	application/pdf	en
dc.format.mimetype	application/zip	en
dc.identifier.citation	Canals, R. M., Múgica, L., Durán, M., San Emeterio, L. (2024). Restorative pyric herbivory practices in shrub-encroached grasslands enhance nutrient resource availability and spatial heterogeneity. Agriculture, Ecosystems and Environment, 372, 1-13. https://doi.org/10.1016/j.agee.2024.109072.
dc.identifier.doi	10.1016/j.agee.2024.109072
dc.identifier.issn	0167-8809
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/52324
dc.language.iso	eng
dc.publisher	Elsevier
dc.relation.ispartof	Agriculture, Ecosystems and Environment (2024), vol. 372, núm. 15, 109072
dc.relation.projectID	info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-116786RB-C31/ES/
dc.relation.publisherversion	https://doi.org/10.1016/j.agee.2024.109072
dc.rights	© 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license
dc.rights.accessRights	info:eu-repo/semantics/openAccess
dc.rights.uri	https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject	Burning	en
dc.subject	Grazing	en
dc.subject	Inorganic nitrogen	en
dc.subject	Ion exchange resin	en
dc.subject	Phosphorus	en
dc.subject	Ulex gallii	en
dc.title	Restorative pyric herbivory practices in shrub-encroached grasslands enhance nutrient resource availability and spatial heterogeneity	en
dc.type	info:eu-repo/semantics/article
dc.type.version	info:eu-repo/semantics/publishedVersion
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