The effects of grazing management in montado fragmentation and heterogeneity
Autor(a) principal: | |
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Data de Publicação: | 2015 |
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/10174/17470 https://doi.org/10.1007/s10457-014-9778-2 |
Resumo: | The Portuguese silvo-pastoral system montado is broadly classified as a High Nature Value (HNV) system since it corresponds to farmland hosting high biodiversity levels, and such biodiversity depends on specific land use practices. However, in recent decades a decline both in the totalmontado area and in the tree cover density within the montado has been observed, driven mainly by management changes. This decline may result in biodiversity loss. Grazing is a central aspect determining the long-term sustainability of the montado system and it has implications also on themontado structural diversity, particularly on connectivity and heterogeneity, which is crucial for the maintenance of montado HNV. The aim of this paper is to demonstrate how variations in montadostructural diversity are correlated with grazing management and its implications on the value of the system for conservation. The empirical data derives from a case study composed of 41 montadofarms in two municipalities of the Alentejo region. Data on grazing management, biophysical and spatial factors were collected and several metrics were calculated to assess montado fragmentation and heterogeneity. A multivariate analysis was performed using generalized additive models. Results show that different grazing patterns, depending on stocking density and grazing animal type, are correlated with variations in montado fragmentation and heterogeneity. Particularly, cattle’s grazing is shown to have adverse effects on the montado fragmentation, while sheep grazing is shown to have stronger impacts on the heterogeneity within the montado patches. |
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The effects of grazing management in montado fragmentation and heterogeneityHigh Nature Value farmlandMontado systemLandscape fragmentationLandscape heterogeneityGrazing intensityThe Portuguese silvo-pastoral system montado is broadly classified as a High Nature Value (HNV) system since it corresponds to farmland hosting high biodiversity levels, and such biodiversity depends on specific land use practices. However, in recent decades a decline both in the totalmontado area and in the tree cover density within the montado has been observed, driven mainly by management changes. This decline may result in biodiversity loss. Grazing is a central aspect determining the long-term sustainability of the montado system and it has implications also on themontado structural diversity, particularly on connectivity and heterogeneity, which is crucial for the maintenance of montado HNV. The aim of this paper is to demonstrate how variations in montadostructural diversity are correlated with grazing management and its implications on the value of the system for conservation. The empirical data derives from a case study composed of 41 montadofarms in two municipalities of the Alentejo region. Data on grazing management, biophysical and spatial factors were collected and several metrics were calculated to assess montado fragmentation and heterogeneity. A multivariate analysis was performed using generalized additive models. Results show that different grazing patterns, depending on stocking density and grazing animal type, are correlated with variations in montado fragmentation and heterogeneity. Particularly, cattle’s grazing is shown to have adverse effects on the montado fragmentation, while sheep grazing is shown to have stronger impacts on the heterogeneity within the montado patches.Agroforestry Systems2016-02-22T12:53:06Z2016-02-222015-01-10T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/17470http://hdl.handle.net/10174/17470https://doi.org/10.1007/s10457-014-9778-2engAlmeida, M., Azeda, C., Guiomar, N., Pinto-Correia, T., 2015, The effects of grazing management in montado fragmentation and heterogeneity, Agroforestry Systems pp 1-17, First online: 10 January 2015 Doi: 10.1007/s10457-014-9778-2PAO - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científicamdsa@uevora.ptcmazeda@uevora.ptnunogui@uevora.ptmtpc@uevora.pt212Almeida, M.Azeda, C.Guiomar, N.Pinto-Correia, T.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:RCAAP2023-08-08T04:18:02ZPortal AgregadorONG |
dc.title.none.fl_str_mv |
The effects of grazing management in montado fragmentation and heterogeneity |
title |
The effects of grazing management in montado fragmentation and heterogeneity |
spellingShingle |
The effects of grazing management in montado fragmentation and heterogeneity Almeida, M. High Nature Value farmland Montado system Landscape fragmentation Landscape heterogeneity Grazing intensity |
title_short |
The effects of grazing management in montado fragmentation and heterogeneity |
title_full |
The effects of grazing management in montado fragmentation and heterogeneity |
title_fullStr |
The effects of grazing management in montado fragmentation and heterogeneity |
title_full_unstemmed |
The effects of grazing management in montado fragmentation and heterogeneity |
title_sort |
The effects of grazing management in montado fragmentation and heterogeneity |
author |
Almeida, M. |
author_facet |
Almeida, M. Azeda, C. Guiomar, N. Pinto-Correia, T. |
author_role |
author |
author2 |
Azeda, C. Guiomar, N. Pinto-Correia, T. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Almeida, M. Azeda, C. Guiomar, N. Pinto-Correia, T. |
dc.subject.por.fl_str_mv |
High Nature Value farmland Montado system Landscape fragmentation Landscape heterogeneity Grazing intensity |
topic |
High Nature Value farmland Montado system Landscape fragmentation Landscape heterogeneity Grazing intensity |
description |
The Portuguese silvo-pastoral system montado is broadly classified as a High Nature Value (HNV) system since it corresponds to farmland hosting high biodiversity levels, and such biodiversity depends on specific land use practices. However, in recent decades a decline both in the totalmontado area and in the tree cover density within the montado has been observed, driven mainly by management changes. This decline may result in biodiversity loss. Grazing is a central aspect determining the long-term sustainability of the montado system and it has implications also on themontado structural diversity, particularly on connectivity and heterogeneity, which is crucial for the maintenance of montado HNV. The aim of this paper is to demonstrate how variations in montadostructural diversity are correlated with grazing management and its implications on the value of the system for conservation. The empirical data derives from a case study composed of 41 montadofarms in two municipalities of the Alentejo region. Data on grazing management, biophysical and spatial factors were collected and several metrics were calculated to assess montado fragmentation and heterogeneity. A multivariate analysis was performed using generalized additive models. Results show that different grazing patterns, depending on stocking density and grazing animal type, are correlated with variations in montado fragmentation and heterogeneity. Particularly, cattle’s grazing is shown to have adverse effects on the montado fragmentation, while sheep grazing is shown to have stronger impacts on the heterogeneity within the montado patches. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-01-10T00:00:00Z 2016-02-22T12:53:06Z 2016-02-22 |
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/10174/17470 http://hdl.handle.net/10174/17470 https://doi.org/10.1007/s10457-014-9778-2 |
url |
http://hdl.handle.net/10174/17470 https://doi.org/10.1007/s10457-014-9778-2 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Almeida, M., Azeda, C., Guiomar, N., Pinto-Correia, T., 2015, The effects of grazing management in montado fragmentation and heterogeneity, Agroforestry Systems pp 1-17, First online: 10 January 2015 Doi: 10.1007/s10457-014-9778-2 PAO - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica mdsa@uevora.pt cmazeda@uevora.pt nunogui@uevora.pt mtpc@uevora.pt 212 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Agroforestry Systems |
publisher.none.fl_str_mv |
Agroforestry Systems |
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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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repository.mail.fl_str_mv |
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1777304616380137472 |