Forest degradation by grazing: a case study in the northern Colombian amazon
It is known that the expansion of the agricultural frontier and the expansion of the grazing frontier have caused deforestation and fragmentation of the Amazonian forests. However, it has not been determined whether cattle grazing degrades forests. Therefore, we established edge-to-interior transects in three contrasting environments of tropical rainforests of the northern Colombian Amazon, corresponding to: forested areas with cattle pressure (grazing), forests adjacent to unused pasture cover, and forests adjacent to rubber plantations. In each transect, variations in the attributes of composition, structure and diversity of natural regeneration were analyzed. It was found that ungrazed forests have greater diversity in the natural regeneration and presence of transcendental species in the successional dynamics. In comparison to the grazed forests, in which specific patterns of disturbed environments were observed, such as the presence of generalist species, heliophytes, herbaceous habits and rapid colonization that can hinder the recruitment of forest species. In forests adjacent to rubber plantations, a greater diversity of forest species of heliophyte and sciophyte guilds was recorded. This characterization provides a better understanding of the interaction of livestock activity with resources such as biodiversity, showing the need to direct livestock management to practices that limit grazing in forested areas so as not to drastically affect their ecological dynamics.
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San Lorenzo: Universidad Nacional de Asunción Facultad de Ciencias Agrarias
2023
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Lezama Ahumada, Katherinn García Suabita, Walter Meza Elizalde, María Constanza |
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Lezama Ahumada, Katherinn García Suabita, Walter Meza Elizalde, María Constanza Forest degradation by grazing: a case study in the northern Colombian amazon |
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Lezama Ahumada, Katherinn García Suabita, Walter Meza Elizalde, María Constanza |
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Lezama Ahumada, Katherinn |
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Forest degradation by grazing: a case study in the northern Colombian amazon |
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Forest degradation by grazing: a case study in the northern Colombian amazon |
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Forest degradation by grazing: a case study in the northern Colombian amazon |
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Forest degradation by grazing: a case study in the northern Colombian amazon |
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Forest degradation by grazing: a case study in the northern Colombian amazon |
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forest degradation by grazing: a case study in the northern colombian amazon |
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It is known that the expansion of the agricultural frontier and the expansion of the grazing frontier have caused deforestation and fragmentation of the Amazonian forests. However, it has not been determined whether cattle grazing degrades forests. Therefore, we established edge-to-interior transects in three contrasting environments of tropical rainforests of the northern Colombian Amazon, corresponding to: forested areas with cattle pressure (grazing), forests adjacent to unused pasture cover, and forests adjacent to rubber plantations. In each transect, variations in the attributes of composition, structure and diversity of natural regeneration were analyzed. It was found that ungrazed forests have greater diversity in the natural regeneration and presence of transcendental species in the successional dynamics. In comparison to the grazed forests, in which specific patterns of disturbed environments were observed, such as the presence of generalist species, heliophytes, herbaceous habits and rapid colonization that can hinder the recruitment of forest species. In forests adjacent to rubber plantations, a greater diversity of forest species of heliophyte and sciophyte guilds was recorded. This characterization provides a better understanding of the interaction of livestock activity with resources such as biodiversity, showing the need to direct livestock management to practices that limit grazing in forested areas so as not to drastically affect their ecological dynamics. |
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San Lorenzo: Universidad Nacional de Asunción Facultad de Ciencias Agrarias |
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2023 |
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https://www.agr.una.py/revista/index.php/ria/article/view/675 |
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oai:ojs.www.agr.una.py:article6752023-03-14T15:25:20Z Forest degradation by grazing: a case study in the northern Colombian amazon Degradación de bosques por pastoreo: un caso de estudio en el norte de la amazonia colombiana Degradação da floresta pelo pastoreio: um estudo de caso na amazónia do norte da Colômbia Lezama Ahumada, Katherinn García Suabita, Walter Meza Elizalde, María Constanza Ganadería Pastoreo Bosque Húmedo Tropical Guaviare Colombia Livestock Grazing Tropical Rainorest Guaviare Colombia ganaderia pastoreo floresta tropical guaviare Colômbia It is known that the expansion of the agricultural frontier and the expansion of the grazing frontier have caused deforestation and fragmentation of the Amazonian forests. However, it has not been determined whether cattle grazing degrades forests. Therefore, we established edge-to-interior transects in three contrasting environments of tropical rainforests of the northern Colombian Amazon, corresponding to: forested areas with cattle pressure (grazing), forests adjacent to unused pasture cover, and forests adjacent to rubber plantations. In each transect, variations in the attributes of composition, structure and diversity of natural regeneration were analyzed. It was found that ungrazed forests have greater diversity in the natural regeneration and presence of transcendental species in the successional dynamics. In comparison to the grazed forests, in which specific patterns of disturbed environments were observed, such as the presence of generalist species, heliophytes, herbaceous habits and rapid colonization that can hinder the recruitment of forest species. In forests adjacent to rubber plantations, a greater diversity of forest species of heliophyte and sciophyte guilds was recorded. This characterization provides a better understanding of the interaction of livestock activity with resources such as biodiversity, showing the need to direct livestock management to practices that limit grazing in forested areas so as not to drastically affect their ecological dynamics. Sabe-se que a expansão da fronteira agrícola e a expansão da fronteira de pastagem provocaram a desflorestação e a fragmentação das florestas amazónicas. No entanto, não foi determinado se o pastoreio de gado degrada as florestas. Por conseguinte, estabelecemos transectos de extremo a extremo em três ambientes contrastantes de florestas tropicais húmidas do norte da Amazónia colombiana, correspondentes a: áreas florestais com pressão de gado (pastoreio), florestas adjacentes a pastagens não utilizadas, e florestas adjacentes a plantações de borracha. Em cada transecto, foram analisadas variações nos atributos de composição, estrutura e diversidade da regeneração natural. Verificou-se que as florestas não arborizadas têm uma maior diversidade na regeneração natural e presença de espécies transcendentais na dinâmica sucessional. Em comparação com as florestas de pastagem, nas quais foram observados padrões específicos de ambientes perturbados, tais como a presença de espécies generalistas, heliófitas, hábitos herbáceos e colonização rápida que podem dificultar o recrutamento de espécies florestais. Nas florestas adjacentes às plantações de borracha, foi registada uma maior diversidade de espécies florestais de heliófitas e de guildas ciófitas. Esta caracterização permite uma melhor compreensão da interacção da actividade pecuária com recursos como a biodiversidade, mostrando a necessidade de direccionar a gestão pecuária para práticas que limitem o pastoreio em áreas florestais de modo a não afectar drasticamente a sua dinâmica ecológica. Sabe-se que a expansão da fronteira agrícola e a praderização causaram a desflorestação e a fragmentação das florestas amazónicas. No entanto, não foi determinado se o pastoreio do gado degrada as florestas. Por conseguinte, estabelecemos transectos de fronteira a interior em três ambientes de floresta tropical contrastantes no norte da Amazónia colombiana, correspondentes a: áreas florestais com pressão de gado (pastoreio), florestas adjacentes à cobertura de pastagens não utilizadas e florestas adjacentes a plantações de borracha. Em cada transecto, foram analisadas variações nos atributos de composição, estrutura e diversidade da regeneração natural. Verificou-se que as florestas não arborizadas têm maior diversidade na regeneração natural e presença de espécies transcendentais na dinâmica da sucessão. Em comparação com as florestas de pastagem, nas quais foram observados padrões específicos de ambientes perturbados, tais como a presença de espécies generalistas, heliófitas, com hábitos herbáceos e rápida colonização que podem dificultar o recrutamento de espécies florestais. Em florestas adjacentes a plantações de borracha, foi registada uma maior diversidade de espécies florestais de guildas heliófitas e ciófitas. Esta caracterização permite uma melhor compreensão da interacção da actividade pecuária com recursos como a biodiversidade, mostrando a necessidade de orientar a gestão pecuária para práticas que limitem o pastoreio em áreas florestais de modo a não afectar drasticamente a sua dinâmica ecológica. San Lorenzo: Universidad Nacional de Asunción Facultad de Ciencias Agrarias 2023-03-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf application/epub+zip https://www.agr.una.py/revista/index.php/ria/article/view/675 10.18004/investig.agrar.2022.diciembre.2402675 Investigación Agraria; Vol. 24 No. 2 (2022): Julio-Diciembre; 95-105 Investigación agraria; Vol. 24 Núm. 2 (2022): Julio-Diciembre; 95-105 Investigación Agraria; v. 24 n. 2 (2022): Julio-Diciembre; 95-105 2305-0683 1684-9086 spa https://www.agr.una.py/revista/index.php/ria/article/view/675/519 https://www.agr.una.py/revista/index.php/ria/article/view/675/529 Derechos de autor 2023 Katherinn Lezama Ahumada, Walter García Suabita, María Constanza Meza Elizalde https://creativecommons.org/licenses/by/4.0 |