The short-term effects of mulching on thesoil-dwelling arthropod community after a wildfire
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/22548 |
Resumo: | Forest fires are common events in the Mediterranean basin, but due to human action and climate change, these have been increasing, especially in Portugal. It is in this context that a larger number of studies have emerged in regard to the impacts of forest fires on ecosystems, with special focus on the effects on soil and mitigation strategies in the post-fire period. In this regard, the application of mulch is one of the mitigation strategies studied since it is considered inexpensive and effective in reducing erosion and loss of soil nutrients in the post-fire. Moreover, the impacts of organic coverages application on soil fauna are still poorly understood. This study aims to assess the effect of the application of various mulch densities in the soil on the invertebrate community in a eucalyptus plantation, immediately after the fire. The ground fauna covered in this study were soil arthropods, a large existing community regarded as reliable bioindicators. The type of mulch used was chopped eucalyptus bark. The study area, located in North-Central region of Portugal, is characterized by eucalyptus plantations in a schist soil. This study was conducted in order to understand the extent of the effects that mulch could produce in a short period after a fire. In order to achieve adequate results, different areas with and without the application of mulch, at different densities were selected and monitored for 5 months after the fire. Sampling was carried out with pitfall traps and identification of the collected specimens was made at Order level. The results suggest differences between the monitoring months and absence of differences among the densities of mulch application, suggesting seasonality as influence factor on the total community abundance. Small differences in the community richness suggested that a low density of mulch provided a faster ecological succession. The application of mulch also raised the hypothesis that it may have introduced unwanted specimens into the ecosystem. |
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The short-term effects of mulching on thesoil-dwelling arthropod community after a wildfireEngenharia do ambienteIncêndios florestaisSolos - NutrientesArtrópodesForest fires are common events in the Mediterranean basin, but due to human action and climate change, these have been increasing, especially in Portugal. It is in this context that a larger number of studies have emerged in regard to the impacts of forest fires on ecosystems, with special focus on the effects on soil and mitigation strategies in the post-fire period. In this regard, the application of mulch is one of the mitigation strategies studied since it is considered inexpensive and effective in reducing erosion and loss of soil nutrients in the post-fire. Moreover, the impacts of organic coverages application on soil fauna are still poorly understood. This study aims to assess the effect of the application of various mulch densities in the soil on the invertebrate community in a eucalyptus plantation, immediately after the fire. The ground fauna covered in this study were soil arthropods, a large existing community regarded as reliable bioindicators. The type of mulch used was chopped eucalyptus bark. The study area, located in North-Central region of Portugal, is characterized by eucalyptus plantations in a schist soil. This study was conducted in order to understand the extent of the effects that mulch could produce in a short period after a fire. In order to achieve adequate results, different areas with and without the application of mulch, at different densities were selected and monitored for 5 months after the fire. Sampling was carried out with pitfall traps and identification of the collected specimens was made at Order level. The results suggest differences between the monitoring months and absence of differences among the densities of mulch application, suggesting seasonality as influence factor on the total community abundance. Small differences in the community richness suggested that a low density of mulch provided a faster ecological succession. The application of mulch also raised the hypothesis that it may have introduced unwanted specimens into the ecosystem.Os incêndios florestais são eventos comuns na bacia mediterrânica, mas devido à ação do homem e às alterações climáticas, estes têm vindo a aumentar em Portugal. É neste contexto que um maior número de estudos tem surgido, focandose nos impactes dos incêndios florestais sobre os ecossistemas, e em especial sobre os seus efeitos no solo e em estratégias de mitigação no período pós-incêndio. Neste sentido, a aplicação de coberturas orgânicas sobre o solo é uma das estratégias de mitigação estudada, sendo considerada barata e eficaz na redução da erosão e perda de nutrientes no pós-incêndio. Por outro lado, o conhecimento dos impactes da aplicação de uma cobertura orgânica sobre a fauna presente no solo é ainda escasso. Este estudo pretende avaliar o efeito da aplicação de várias densidades de cobertura orgânica no solo sobre a comunidade de invertebrados do solo em eucaliptais, imediatamente após o incêndio, utilizando como cobertura orgânica raspas de casca de eucalipto. Os invertebrados do solo, formam uma comunidade muito diversa considerada como um bioindicador fiável. A área de estudo, situada na região Centro-Norte de Portugal, é caracterizada por plantações de eucalipto sobre um solo xistoso. A amostragem foi realizada com armadilhas de solo e a identificação dos espécimenes recolhidos foi feita até ao nível da Ordem. Os resultados obtidos sugerem diferenças entre os meses de monitorização e ausência de diferenças entre as densidades de aplicação e sem cobertura orgânica, sugerindo a sazonalidade como um fator de influência sobre a abundância total da comunidade. Pequenas diferenças na riqueza específica da comunidade sugeriram que uma baixa densidade de cobertura orgânica promoveu uma sucessão ecológica mais célere. A aplicação da cobertura orgânica levanta ainda a hipótese de esta ser uma fonte de introdução de espécies indesejadas no ecossistema.Universidade de Aveiro2018-03-08T13:00:22Z2016-01-01T00:00:00Z2016info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10773/22548TID:201596440engSilva, Tiago van der Worp dainfo: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:RCAAP2024-02-22T11:44:14Zoai:ria.ua.pt:10773/22548Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:56:41.590838Repositório 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 |
The short-term effects of mulching on thesoil-dwelling arthropod community after a wildfire |
title |
The short-term effects of mulching on thesoil-dwelling arthropod community after a wildfire |
spellingShingle |
The short-term effects of mulching on thesoil-dwelling arthropod community after a wildfire Silva, Tiago van der Worp da Engenharia do ambiente Incêndios florestais Solos - Nutrientes Artrópodes |
title_short |
The short-term effects of mulching on thesoil-dwelling arthropod community after a wildfire |
title_full |
The short-term effects of mulching on thesoil-dwelling arthropod community after a wildfire |
title_fullStr |
The short-term effects of mulching on thesoil-dwelling arthropod community after a wildfire |
title_full_unstemmed |
The short-term effects of mulching on thesoil-dwelling arthropod community after a wildfire |
title_sort |
The short-term effects of mulching on thesoil-dwelling arthropod community after a wildfire |
author |
Silva, Tiago van der Worp da |
author_facet |
Silva, Tiago van der Worp da |
author_role |
author |
dc.contributor.author.fl_str_mv |
Silva, Tiago van der Worp da |
dc.subject.por.fl_str_mv |
Engenharia do ambiente Incêndios florestais Solos - Nutrientes Artrópodes |
topic |
Engenharia do ambiente Incêndios florestais Solos - Nutrientes Artrópodes |
description |
Forest fires are common events in the Mediterranean basin, but due to human action and climate change, these have been increasing, especially in Portugal. It is in this context that a larger number of studies have emerged in regard to the impacts of forest fires on ecosystems, with special focus on the effects on soil and mitigation strategies in the post-fire period. In this regard, the application of mulch is one of the mitigation strategies studied since it is considered inexpensive and effective in reducing erosion and loss of soil nutrients in the post-fire. Moreover, the impacts of organic coverages application on soil fauna are still poorly understood. This study aims to assess the effect of the application of various mulch densities in the soil on the invertebrate community in a eucalyptus plantation, immediately after the fire. The ground fauna covered in this study were soil arthropods, a large existing community regarded as reliable bioindicators. The type of mulch used was chopped eucalyptus bark. The study area, located in North-Central region of Portugal, is characterized by eucalyptus plantations in a schist soil. This study was conducted in order to understand the extent of the effects that mulch could produce in a short period after a fire. In order to achieve adequate results, different areas with and without the application of mulch, at different densities were selected and monitored for 5 months after the fire. Sampling was carried out with pitfall traps and identification of the collected specimens was made at Order level. The results suggest differences between the monitoring months and absence of differences among the densities of mulch application, suggesting seasonality as influence factor on the total community abundance. Small differences in the community richness suggested that a low density of mulch provided a faster ecological succession. The application of mulch also raised the hypothesis that it may have introduced unwanted specimens into the ecosystem. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-01-01T00:00:00Z 2016 2018-03-08T13:00:22Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10773/22548 TID:201596440 |
url |
http://hdl.handle.net/10773/22548 |
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TID:201596440 |
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eng |
language |
eng |
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info:eu-repo/semantics/openAccess |
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openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de Aveiro |
publisher.none.fl_str_mv |
Universidade de Aveiro |
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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 |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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