Vegetation structure and effects of human use of the dambos ecosystem in northern Mozambique
| Autor(a) principal: | |
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| Data de Publicação: | 2019 |
| 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/10362/162632 |
Resumo: | Fundação para Ciência e Tecnologia (FCT) of Portugal, supported the scholarship for the first author ( Ref n o SFRH/BD/113955/2015 ), as well as the research units LEAF ( UID/AGR/04129/2013 ) and CEF ( UID/AGR/00239/2013 ). Appendix A |
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Vegetation structure and effects of human use of the dambos ecosystem in northern MozambiqueDambos wetlandHorizontal and vertical structureIndicators speciesSampling-based rarefactionSpecies diversityEcology, Evolution, Behavior and SystematicsEcologyNature and Landscape ConservationSDG 15 - Life on LandFundação para Ciência e Tecnologia (FCT) of Portugal, supported the scholarship for the first author ( Ref n o SFRH/BD/113955/2015 ), as well as the research units LEAF ( UID/AGR/04129/2013 ) and CEF ( UID/AGR/00239/2013 ). Appendix AThe Niassa National Reserve (NNR) is the most extensive conservation area in Mozambique and the third largest in Africa, encompassing 42,000 km2 of endemic miombo vegetation. Dambos wetlands occur within the wooded grassland and grassland vegetation of NNR and provide a wide range of Ecosystem Services (ES), including life support for animal species, regulation of water flow and prevention of soil erosion. It also generates income for the livelihoods of local communities by providing land for agriculture and harvesting of non-timber products. The dynamics of these ecosystems is poorly understood despite the contribution of the dambos to global biodiversity and ES. This research is the first preliminary assessment of the vegetation structure and composition of six dambos within NNR, selected using Google Earth, MODIS satellite images and an exploratory field visit. Field data collection was performed using a two-stage systematic sampling approach, along transect lines of 100 × 10 m (0.1 ha), perpendicular to the dambos' flow. Square plots of 0.25 m2 were established for grass survey within the transects where grass vegetation was measured, counted and identified. Data were analyzed with R software. The sociological position of each species was analyzed with regard to the vertical structure while for horizontal structure, the abundance, dominance, frequency and Importance Value Index (IVI) were determined. In order to understand the differences between dambos, evenness (H) and reciprocal of Simpson's heterogeneity index (Hill's N2) were calculated. Principal Coordinates Analysis (PCoA) and Cluster Analysis were also used to characterize the surveyed species communities. A total of 58 transects (5.8 ha) and 336 subplots were assessed, recording 110 woody and 73 grass species, respectively. The most common tree species were Vitex doniana, Burkea africana, Syzygium cordatum and Annona senegalensis, while for grass vegetation the most abundant species were Andropogon eucomus and Helictotrichon turgidulum. According to the IVI, the most dominant tree and shrub species were V. doniana, Pseudolachnostylis maprouneifolia, A. senegalensis and S. cordatum. Homogeneity (Hill's N2 = 18.92) and evenness (H = −4.27) were, on average, low in all dambos. Dambo 2 was the most heterogeneous (Hill's N2 = 18.21) while dambo 1 was the least heterogeneous (Hill's N2 = 5.71). Dambo 6 was most equitable (H = −1.35) whereas dambo 2 the least equitable (H = −3.72). Using species abundance and based on PCoA and cluster analysis, four main groups of dambos were identified based mainly on the water gradient, with data variation captured by the first three axes reaching almost 83%. The p-value (0.42), suggested no significant differences between species communities in the dambos, and thus, human disturbances appear not to be enough to modify dambos microenvironment. Accordingly, the results suggest that human activities, at this level, do not necessarily affect the structure and diversity of dambos in the NNR. The results also suggest that the species A. senegalensis, Combretum psidioides, Crossopteryx febrifuga, Protea nitida, P. maprouneifolia and S. cordatum can be used as indicator dambo species in NNR, with high likelihood of occurrence.NOVA School of Business and Economics (NOVA SBE)RUNMbanze, Aires AfonsoMartins, Amade MárioRivaes, RuiRibeiro-Barros, Ana I.Sofia Ribeiro, Natasha2024-01-22T22:10:33Z2019-10-012019-10-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10362/162632eng2351-9894PURE: 14354275https://doi.org/10.1016/j.gecco.2019.e00704info: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:RCAAP2024-03-11T05:45:33Zoai:run.unl.pt:10362/162632Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:58:59.425351Repositório 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 |
Vegetation structure and effects of human use of the dambos ecosystem in northern Mozambique |
| title |
Vegetation structure and effects of human use of the dambos ecosystem in northern Mozambique |
| spellingShingle |
Vegetation structure and effects of human use of the dambos ecosystem in northern Mozambique Mbanze, Aires Afonso Dambos wetland Horizontal and vertical structure Indicators species Sampling-based rarefaction Species diversity Ecology, Evolution, Behavior and Systematics Ecology Nature and Landscape Conservation SDG 15 - Life on Land |
| title_short |
Vegetation structure and effects of human use of the dambos ecosystem in northern Mozambique |
| title_full |
Vegetation structure and effects of human use of the dambos ecosystem in northern Mozambique |
| title_fullStr |
Vegetation structure and effects of human use of the dambos ecosystem in northern Mozambique |
| title_full_unstemmed |
Vegetation structure and effects of human use of the dambos ecosystem in northern Mozambique |
| title_sort |
Vegetation structure and effects of human use of the dambos ecosystem in northern Mozambique |
| author |
Mbanze, Aires Afonso |
| author_facet |
Mbanze, Aires Afonso Martins, Amade Mário Rivaes, Rui Ribeiro-Barros, Ana I. Sofia Ribeiro, Natasha |
| author_role |
author |
| author2 |
Martins, Amade Mário Rivaes, Rui Ribeiro-Barros, Ana I. Sofia Ribeiro, Natasha |
| author2_role |
author author author author |
| dc.contributor.none.fl_str_mv |
NOVA School of Business and Economics (NOVA SBE) RUN |
| dc.contributor.author.fl_str_mv |
Mbanze, Aires Afonso Martins, Amade Mário Rivaes, Rui Ribeiro-Barros, Ana I. Sofia Ribeiro, Natasha |
| dc.subject.por.fl_str_mv |
Dambos wetland Horizontal and vertical structure Indicators species Sampling-based rarefaction Species diversity Ecology, Evolution, Behavior and Systematics Ecology Nature and Landscape Conservation SDG 15 - Life on Land |
| topic |
Dambos wetland Horizontal and vertical structure Indicators species Sampling-based rarefaction Species diversity Ecology, Evolution, Behavior and Systematics Ecology Nature and Landscape Conservation SDG 15 - Life on Land |
| description |
Fundação para Ciência e Tecnologia (FCT) of Portugal, supported the scholarship for the first author ( Ref n o SFRH/BD/113955/2015 ), as well as the research units LEAF ( UID/AGR/04129/2013 ) and CEF ( UID/AGR/00239/2013 ). Appendix A |
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2019 |
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2019-10-01 2019-10-01T00:00:00Z 2024-01-22T22:10:33Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/article |
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article |
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publishedVersion |
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http://hdl.handle.net/10362/162632 |
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http://hdl.handle.net/10362/162632 |
| dc.language.iso.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
2351-9894 PURE: 14354275 https://doi.org/10.1016/j.gecco.2019.e00704 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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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) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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