Efeito De Borda Em Remanescentes De Floresta Atlântica Na Bacia Do Rio Tapacurá, Pernambuco

Oliveira, Lamartine Soares Cardoso de; Marangon, Luíz Carlos; Feliciano, Ana Lícia Patriota; Lima, Aldení Silva de; Cardoso, Mércia Soares de Oliveira; Santos, Wedson Batista dos

doi:10.1590/01047760201521021185

Cited by 12 publications

(13 citation statements)

References 11 publications

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“…On the other hand, forest patches with a complex or long shape as riparian zone generate more area under edge effect. Those areas show low tree richness than areas farther from the edge (OLIVEIRA et al, 2015).…”

Section: Discussionmentioning

confidence: 93%

Priority Areas for Forest Conservation in an Urban Landscape at the Transition Between Atlantic Forest and Cerrado

Mello¹,

Toppa

Cardoso-Leite

2016

CERNE

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Urbanization and agriculture growth are some of the major causes of natural ecosystems depletion and biodiversity loss. Conservation efforts can be developed through the prioritization of areas for forest conservation in order to minimize this process. Here, we establish conservation strategies based on a spatial analysis of forest fragments in an urban landscape at the transition between two important Brazilian biodiversity hotspots: Atlantic Forest and Cerrado. A high-resolution mapping of forest patches was used to quantify forest cover and to provide spatial analysis. We developed a Forest Conservation Priority Index (FCPI) derived from landscape metrics to select priority areas for forest conservation efforts. We used area, shape and proximity metrics as landscape structure indicators. Landscape metrics were classified and we attributed a rank and weights for them to calculate the FCPI. Forest covers 17% of the study area. 60% of the forest patches comprise less than one hectare, 95% less than 10 ha and only 1% more than 50 ha. The largest fragments (> 100ha) are all long and narrow. Also, fewer than half the patches are connected to others. Regions classified as high and very high priority for forest conservation are localized at greater slopes, along rivers and on private lands. Our index allowed the prioritization of forest fragments in an urban landscape, directing efforts of conservation. Creating protected areas and restoration plans are necessary for the better situation of the natural ecosystem. Land-use planning must resolve human demands and conservation of this important ecosystem.ÁREAS PRIORITÁRIAS PARA CONSERVAÇÃO FLORESTAL EM UMA PAISAGEM URBANA NA TRANSIÇÃO ENTRE MATA ATLÂNTICA E CERRADO RESUMO: O crescimento urbano e agrícola é uma das maiores causas de degradação dos ecossistemas naturais e da perda de biodiversidade. Os esforços de conservação podem ser planejados com base na priorização de áreas para conservação florestal de forma a minimizar esse processo. Neste trabalho, nós estabelecemos estratégias de conservação com base em uma análise espacial dos fragmentos florestais em uma paisagem urbana na transição entre dois "hotspots" brasileiros: Mata Atlântica e Cerrado. Um mapa de alta resolução dos fragmentos florestais foi usado para quantificar a cobertura florestal e para fornecer uma análise espacial dos mesmos. Nós criamos um Índice de Prioridade de Conservação Florestal (IPCF) derivado de métricas de paisagem para selecionar áreas prioritárias para esforços de conservação da floresta. Foram utilizadas as métricas de área, forma e proximidade como indicadores de estrutura da paisagem. As métricas de paisagem foram classificadas, atribuindo-se classes e pesos a cada uma para calcular o IPCF. A cobertura florestal representa 17% da área de estudo, sendo que 60% dos fragmentos florestais apresentam área menor que um hectare, 95% são menores que 10 ha e apenas 1% é maior que 50 ha. Os maiores fragmentos (>100 ha) são alongados e estreitos e menos da metade dos fragmentos são c...

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Section: Discussionmentioning

confidence: 93%

Priority Areas for Forest Conservation in an Urban Landscape at the Transition Between Atlantic Forest and Cerrado

Mello¹,

Toppa

Cardoso-Leite

2016

CERNE

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“…A borda da mata de galeria apresenta interação com o ambiente no entorno, interação esta conhecida como efeito de borda (OLIVEIRA et al, 2015). Alguns fatores podem proporcionar maior produção de serapilheira nas bordas de florestas, associados à magnitude dos fluxos energéticos que circulam o sistema, fluxos estes dependentes das características climáticas, florísticas e edáficas (GODINHO et al, 2015), bem como o histórico de ação antrópica (SANTOS et al, 2015).…”

Section: Resultsunclassified

Acúmulo De Serapilheira Em Um Fragmento De Mata De Galeria

Melo¹,

Menezes²,

Dias³

2018

Enci Bio

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RESUMO O acúmulo de serapilheira é parte essencial dos estudos sobre ciclagem de nutrientes. O objetivo deste estudo foi determinar o acúmulo de serapilheira em um fragmento florestal de mata de galeria, fisionomia do Cerrado, na época seca e chuvosa, e quantificar as frações da serapilheira encontradas na margem do curso d água, na porção central do fragmento e em sua borda. Os dados foram coletados em um fragmento de mata de galeria nas épocas chuvosa e na seca de 2015 em Jataí-GO. Em cada época, amostras de serapilheira foram coletadas aleatoriamente na margem do curso d'água presente, na porção central e na borda do fragmento. A serapilheira foi fracionada em três compartimentos (folhas, galhos e miscelânea). Não houve diferença significativa entre a serapilheira acumulada nas diferentes épocas estudadas. A fração galhos e folhas apresentaram contribuição similar para a serapilheira acumulada nas duas épocas estudadas. Na época seca, foi verificado maior acúmulo de serapilheira na borda do fragmento de mata de galeria. PALAVRAS-CHAVE: ciclagem de nutrientes, frações da serapilheira, liteira.

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“…Comparisons between environments were performed: A1 -the fragment edge (plots 1 to 3 in each transect), A2 -an edge-fragment interior transition (plots 4 to 7 in each transect) and A3inside fragment (plots 8 to 10 in each transect) ( Figure 3). For this purpose, a Venn Diagram (ZAR, 1999) was used, indicating the richness of species unique and common to each environment, as well as the number of individuals (absolute and relative values), Shannon-Weaver diversity index (H ') and Pielou equability (J '), according to the methodology used by Oliveira et al (2015).…”

Section: Discussionmentioning

confidence: 99%

“…However, Fernandes et al (2017) simulated distances of 30, 60 and 90 m from the border to the interior of the fragment, in an area of Atlantic forest in the south region of the state of Sergipe, and recommended a maximum distance of 30 m for the analysis of edge effects in the region. However, from a phytosociological survey on remainders of Atlantic forest in the Tapacurá River Basin, Pernambuco, Oliveira et al (2015) concluded that the edge effect on the tree component tends to minimize between 50 and 100 meters towards the interior of the fragment. The results of such studies help to plan and define sample design in researches that seek to evaluate the effect of the edge environment on the vegetation structure.…”

Section: Introductionmentioning

confidence: 99%

Influence of edge in the structure of the vegetation of an open Ombrophilous Forest in Alagoas

Lima¹,

Lima²,

Nepomuceno³

et al. 2020

Biosci. J.

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Understanding the influence of fragmentation on the behavior of forest essential elements in different vegetation formations is fundamental for the definition of conservation strategies. In this study, the aim was to evaluate the influence of the edge environment on the phytosociological structure of a fragment of Open Ombrophylous Forest, in Rio Largo, Alagoas. Five transects of 10.0 x 100.0 m were subdivided into ten 10.0 x 10.0 m plots to collect the data. All tree individuals with Chest Height Circumference ≥ 15 cm were sampled, measured and later identified in the herbarium of the Institute of the Environment of Alagoas. For the analysis, the phytosociological parameters Shannon-Wiener diversity (H'), Pielou equability (J') were calculated after defined the successional classes and dispersion syndromes of the species sampled. The edge effect was analyzed by comparing the richness, diversity, equability and number of individuals in the interior and at the edge of the fragment, using the Venn diagram technique. There were 581 arboreal individuals, of which 434 were identified as belonging to 20 families, 24 genera and 30 morphospecies. Among the raised species, there were higher occurrences of early secondary (46.67%) and late (23.33%), as well as those of zoocoric dispersion (53.33%). The diversity was 2.89 nats/ind., and the Pielou (J') equability was 0.8497. The edge environment did not influence the establishment of species. This may have occurred due to the environmental characteristics of the open ombrophylous forest.

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Efeito De Borda Em Remanescentes De Floresta Atlântica Na Bacia Do Rio Tapacurá, Pernambuco

Cited by 12 publications

References 11 publications

Priority Areas for Forest Conservation in an Urban Landscape at the Transition Between Atlantic Forest and Cerrado

Priority Areas for Forest Conservation in an Urban Landscape at the Transition Between Atlantic Forest and Cerrado

Acúmulo De Serapilheira Em Um Fragmento De Mata De Galeria

Influence of edge in the structure of the vegetation of an open Ombrophilous Forest in Alagoas

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