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Ranta, Pertti; Blom, Tom; Niemelä, Jari; Joensuu, Elina; Siitonen, Mikko

doi:10.1023/a:1008885813543

Cited by 359 publications

(46 citation statements)

References 24 publications

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“…A proximidade do município com a região metropolitana do Rio de Janeiro cria oportunidades e riscos para a conservação dos recursos naturais. Atividades geradoras de renda com baixo impacto sobre as paisagens, como é o caso do turismo rural, que combina atividades agrícolas e não agrícolas (Brasil, 2010), e a implantação de sistemas florestais e agroflorestais, que podem gerar renda e auxiliar na tarefa de recuperação das paisagens degradadas (Ranta et al, 1998;Gomes, 2004;Francelino et al, 2012) representam alternativas que poderiam ajudar na conservação dos recursos naturais. Por outro lado, a proximidade com grandes centros urbanos pode fazer aumentar o número de construções e estradas e acabar contribuindo para a redução da cobertura florestal (Freitas et al, 2010).…”

Section: /11unclassified

A Cobertura Florestal em Paisagens do Médio Vale do Rio Paraíba do Sul

2017

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A contínua substituição da cobertura florestal pelo cultivo agrícola e a urbanização causaram alterações na maior parte do bioma Mata Atlântica no Brasil. O entendimento da interação entre os fatores físicos, antrópicos e da cobertura vegetal em uma paisagem é de fundamental importância para oferecer subsídios ao planejamento territorial de forma sustentável. Este estudo investigou a influência da altitude, declividade e orientação das vertentes na cobertura florestal em três diferentes paisagens no município de Vassouras, RJ. No geral, as áreas analisadas apresentaram a cobertura florestal fragmentada, porém foi observada uma paisagem com maior cobertura florestal do que pastagens. Entre as variáveis analisadas, a altitude e a declividade apresentaram uma relação positiva com a cobertura florestal. As paisagens estavam inseridas em diferentes contextos socioeconômicos que podem também determinar a distribuição da cobertura florestal atual. A região estudada oferece atributos socioambientais específicos de cada paisagem, cuja compreensão deve ser útil ao planejamento ambiental.Palavras-chave: fragmentação florestal, ecologia de paisagens, uso do solo, pastagens, vassouras. Forest Cover in Landscapes of the Middle Valley of Paraiba River ABSTRACTThe continuous replacement of forest covers for crops and urban areas changed most of the Atlantic Forest biome in Brazil. Hence, understanding the interaction between the forest cover, physical and anthropic factors in a landscape is essential in order to provide subsidies for sustainable land use. The present study aimed at investigating the influence of the altitude, declivity, and slope orientation on the forest cover of three landscapes in the municipality of Vassouras. In general, Vassouras showed fragmented forest covers, but we observed a landscape covered more by forests than pastures. Among the variables analyzed, altitude and declivity showed a positive relationship with forest cover. The analyzed landscapes were inserted in different socio-economical contexts, which can also affect the current forest cover distribution. The socio-environmental attributes of those landscapes are specific and their understanding can be strategic for environmental planning.

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Section: /11unclassified

A Cobertura Florestal em Paisagens do Médio Vale do Rio Paraíba do Sul

2017

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“…In view of the accelerated rhythm of deforestation the Atlantic Forest has experienced to date (Dean 1996), specifically the northern sector (Freyre 2004), it is necessary to ensure that poorly studied areas are inventoried urgently, since many are threatened, in spite of the Brazilian legal protection instruments (Law N6 11.428/ 2006). Throughout the Atlantic Forest northern sector, the forest fragments are vulnerable, due to their high timber value, and extreme reduction and fragmentation (Ranta et al 1998;Tabarelli et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Floristic characterization of an Atlantic Rainforest remnant in Southern Sergipe: Crasto forest

et al. 2015

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The state of Sergipe has suffered extreme reduction of its Atlantic Forest area in the last decades. The objective of this study is to present an inventory of the Mata do Crasto flora, the largest Atlantic Forest Remnant in Sergipe (approximately 1,000 ha), located in the Municipality of Santa Luzia do Itanhy. An intensive survey was undertaken with monthly plant collections in the study area, for four years (1995 to 1999). Additionally, collections deposited in herbaria were consulted to complete the species list. A total of 324 species were found, belonging to 84 families and 193 genera. This study adds an additional 29 genera and 96 species to the Sergipe flora as new occurrences. The four most speciose families were the Fabaceae (33 species), Rubiaceae (24 species), Myrtaceae (23 species) and Melastomataceae (15 species), that accounted for ca. 30% of the total species. The taxonomic distinction of the area is very similar to three other lowland forests in Northeastern Brazil, although its species composition is quite distinct.

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“…Nowadays, only 12.9% of its original cover remains forested (Tabarelli et al 2010). The majority of remaining forest cover are small fragments (<100 ha) while the largest forested areas are located in cliffs and stepped areas that difficult access of humans (Ranta et al 1998;Silva et al 2007;Ribeiro et al 2009). Because heavy vegetation losses and high endemism degree, the Atlantic Rain Forest is considered one the largest hotspots in the world (Myers et al 2000;Miranda 2012).…”

Section: Introductionmentioning

confidence: 99%

Ichthyofauna from the Parque Nacional da Serra dos Órgãos and its surrounding areas, Rio de Janeiro state, Brazil

Camilo¹,

Terra²,

Araújo³

2015

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Abstract:This study provides a list of freshwater fishes of the Parque Nacional da Serra dos Órgãos (PARNASO; Rio de Janeiro state, Brazil) and its surrounding areas. Fish samplings were performed by electrofishing during the dry season (2010 -2011) in three different areas: 1, inside of the PARNASO (2 sites); 2, in the buffer zone (4 sites); and 3, in adjacent areas (8 sites). A total of 47 fish species in 13 families and six orders were recorded. Fish composition within the limits of the PARNASO differed from that recorded in the adjacent area, with the latter having comparatively higher species richness. The buffer area had intermediate ichthyofauna composition between the two other areas. This study enhanced knowledge on the composition and structure of the fish assemblages in PARNASO, by recording the occurrence of six new species within the park that were not included in the Management Plan of this Conservation Unit.

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Cited by 359 publications

References 24 publications

A Cobertura Florestal em Paisagens do Médio Vale do Rio Paraíba do Sul

A Cobertura Florestal em Paisagens do Médio Vale do Rio Paraíba do Sul

Floristic characterization of an Atlantic Rainforest remnant in Southern Sergipe: Crasto forest

Ichthyofauna from the Parque Nacional da Serra dos Órgãos and its surrounding areas, Rio de Janeiro state, Brazil

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