Dinâmica ambiental da zona de amortecimento de áreas naturais protegidas / Environmental dynamic of the buffer zone of protected natural areas

Nora, Elói Lennon Dalla; Santos, José Eduardo dos

doi:10.5777/ambiencia.2011.02.06

Cited by 3 publications

(3 citation statements)

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“…On the other hand, the growth of visit number to the region has surpassed the support capacity of the tourist activity by the local and CU administrations (Dalla Nora & Santos, 2011). As a result, it has been possible to note in several parts of the PEPS, especially in BZ, the consequences of tourism regarding the harmful use of space, which can lead to environmental degradation, pollution of water sources, garbage accumulation in inappropriate places, erosion processes, hunting and criminal collection of native vegetation, forest fires, among others.…”

Section: /8mentioning

confidence: 99%

“…However, several regions have suffered environmental impacts where CUs are currently established, which includes adjacent areas. For Dalla Nora & Santos (2011), only the creation and delimitation of CUs are not able to ensure the conservation and maintenance of ecological functions and protection of biodiversity, but it is also necessary to understand its surroundings. According to the National System of Conservation Units (NSCU), the surroundings of CUs are called buffer zones (BZ), where anthropic activities are subject to specific norms and constraints of each region, to minimize the negative impacts on the CU (Brasil, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…Multitemporal data, through remote sensing, can be used in evaluating the patterns of land-use changes, as well as its degradation levels (Crouzeilles et al, 2013;Ferraz et al, 2014;Rosa et al, 2017). Other authors also discuss the role of remote sensing in the vegetation dynamics, whether at local, regional or global scales (Dalla Nora & Santos, 2011;Hansen & Loveland, 2012;Nguyen et al, 2018). Remote sensing is also a valuable tool that helps to comprehend the forest fragmentation.…”

Section: Introductionmentioning

confidence: 99%

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Landscape dynamics and its impacts in the Atlantic Forest area of Southeastern Brazil

Pessoa

Carvalho

Santos

et al. 2020

Agraria

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The objective of this study was to evaluate the spatial-temporal dynamics of land-use and coverage in the Parque Estadual da Pedra Selada (PEPS) and its landscape, located in Resende and Itatiaia, Rio de Janeiro. Orbital images of the Landsat platform were obtained for the years 1985, 1995, 2005 and 2015. NDVI was calculated for each year, and its amplitude described the classes of land-use and coverage in water bodies, urban area, exposed soil, grassland and forest. For landscape analysis, a 3-km radius buffer was incorporated, delimiting the Buffer Zone (BZ). The forest class was the largest in all years, but there was a reduction in its area over time, especially in BZ. An increase was observed in the grassland and urban areas when comparing the years 1995 and 2015, where the urban area doubled its territory. Intense anthropic activity explains this transition as livestock activities began to be used for urban sprawl. The increase in deforested areas in the region, due to pressures such as tourism, real estate speculation, farming and agriculture, drives the fragmentation process that may affect the diversity of flora and fauna present in PEPS. Dinâmica da paisagem e seus impactos na Floresta Atlântica no Sudeste do BrasilRESUMO: O objetivo deste estudo foi avaliar a dinâmica espaço-temporal do uso e cobertura da terra no Parque Estadual da Pedra Selada (PEPS), e sua paisagem, localizada em Resende e Itatiaia, no Rio de Janeiro. Imagens orbitais da plataforma Landsat foram obtidas para os anos de 1985, 1995, 2005 e 2015. O NDVI foi calculado para cada ano, e sua amplitude descreveu as classes de uso e cobertura da terra em corpos de água, área urbana, solo exposto, pastagem e Floresta. Para análise da paisagem, um buffer com raio de 3 km foi incorporado delimitando a Zona de Amortecimento (ZA). A classe Floresta foi a maior classe em todos os anos, mas houve uma redução em sua área ao longo do tempo, principalmente na ZA. Observou-se um aumento nas pastagens e áreas urbanas quando comparados os de 1995 e 2015, onde a área urbana dobrou sua área. A intensa atividade antrópica explica essa transição à medida que as atividades pecuárias começaram a ser utilizadas para a expansão urbana. O aumento das áreas desmatadas na região, devido a pressões como turismo, especulação imobiliária, agricultura e agricultura, impulsiona o processo de fragmentação que pode afetar a diversidade de flora e fauna presentes no PEPS.Palavras-chave: zona de amortecimento; uso e cobertura do solo; área protegida Landscape dynamics and its impacts in the Atlantic Forest area of Southeastern Brazil Rev. Bras. Cienc. Agrar., Recife, v.15, n.1, e6971, 2020 2/8

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Section: /8mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Landscape dynamics and its impacts in the Atlantic Forest area of Southeastern Brazil

Pessoa

Carvalho

Santos

et al. 2020

Agraria

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Estrutura Dos Fragmentos Florestais Da Bacia Hidrográfica Do Rio Poxim-Se, Como Subsídio À Restauração Ecológica

et al. 2015

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RESUMO -O planejamento para a restauração de extensas áreas fragmentadas tem como ponto de partida a caracterização dos efeitos da fragmentação na paisagem. Assim, este trabalho foi realizado com o objetivo de caracterizar os principais aspectos da fragmentação florestal na bacia hidrográfica do rio Poxim-SE, verificando-se seus possíveis efeitos, através de análises quantitativas da estrutura da paisagem. Para isso, foram utilizados indicadores de paisagem (métricas) selecionados a partir das opções do programa Patch Analyst 5.0. Foram demarcados pontos georreferenciados na área, para relacionar os dados apontados pelas métricas com as informações em campo. Por meio da análise das métricas, observou-se que cerca de 85% dos fragmentos são pequenos. Todos os fragmentos da área apresentam formas irregulares e alto grau de isolamento, com distância média de 657,3 m. Na simulação de uma área de borda de 35 m, a área total seria reduzida em 32% com a exclusão de 28 fragmentos que estariam totalmente sob essa condição. As informações em campo estão de acordo com os indicadores de intensa ação antrópica, o que levou à fragmentação da área. Os efeitos da fragmentação são evidentes na bacia hidrográfica do rio Poxim, e o planejamento de metas para conservação da biodiversidade é necessário para reduzir a ação antrópica nessa área.Palavras-chave: Ecologia de paisagem; Métricas da paisagem; Fragmentação. STRUCTURE OF FOREST FRAGMENTS OF THE RIVER BASIN POXIM-SE, AS SUBSIDY TO ECOLOGICAL RESTORATION

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Patterns of species diversity in different spatial scales and spatial heterogeneity on beta diversity

et al. 2020

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Patterns of species diversity are essential to understand community structure. We aimed to determine species diversity and patterns of beta diversity in different spatial scales. We sampled three thousand individuals between the coordinates 22°10'S to 22°16'S and 47°47'W to 48°00'W to assess species diversity in three spatial scales (maximum distances of 80 m, 1,400 m, and 12,000 m), using the point-centered-quarter method. We partitioned gamma diversity into alpha and beta components. Beta diversity was partitioned into dissimilarities produced by spatial species turnover and nestedness. The contribution of beta diversity to gamma diversity was greater than that of alpha diversity in all scales, although the patterns of species diversity were similar for the evaluated scales, and was similar to that described for larger spatial scales. The sampled fragments presented means of 15 exclusive species and 47.5 species per fragment, and dissimilarities [β(SØR)=0.7] almost completely explained (94 %) by spatial species turnover. The results indicate that the remnant fragments are residual patches of an originally heterogeneous vegetation. The fragmentation processes could have progressed differently in each portion of the original vegetation, producing the current heterogeneous vegetation. Thus, there is a potential of high local species extinctions if the remnant fragments are deforested.

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Dinâmica ambiental da zona de amortecimento de áreas naturais protegidas / Environmental dynamic of the buffer zone of protected natural areas

Cited by 3 publications

References 10 publications

Landscape dynamics and its impacts in the Atlantic Forest area of Southeastern Brazil

Landscape dynamics and its impacts in the Atlantic Forest area of Southeastern Brazil

Estrutura Dos Fragmentos Florestais Da Bacia Hidrográfica Do Rio Poxim-Se, Como Subsídio À Restauração Ecológica

Patterns of species diversity in different spatial scales and spatial heterogeneity on beta diversity

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