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Registros recuperados: 13
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Spatial patterns of tree community dynamics are detectable in a small (4 ha) and disturbed fragment of the Brazilian Atlantic forest Acta Botanica
Machado,Evandro Luiz Mendonça; Oliveira-Filho,Ary Teixeira de.
The dynamics of the tree community of a fragment of tropical semideciduous forest was investigated in south-eastern Brazil. Surveys were carried out in 2000 and 2005 in 29 20 × 20 m plots. The main purpose was to assess the possibility of detecting spatial patterns of dynamics that could be related to the heterogeneity of both the environment and disturbance history in a small forest area (4.0 ha). Rates of mortality and recruitment of trees and gain and loss of basal area were obtained for the whole sample, four pre-defined soil habitats, diameter classes and twelve tree populations. The tree community was rather unstable in the period, once mortality rates surpassed recruitment rates and loss rates of basal area surpassed gain rates all-over the area...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Forest disturbance; Forest fragments; Forest regeneration; Tropical semideciduous forest.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062010000100027
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Bird diversity along a gradient of fragmented habitats of the Cerrado Anais da ABC (AABC)
JESUS,SHAYANA DE; PEDRO,WAGNER A.; BISPO,ARTHUR A..
ABSTRACT Understanding the factors that affect biodiversity is of central interest to ecology, and essential to species conservation and ecosystems management. We sampled bird communities in 17 forest fragments in the Cerrado biome, the Central-West region of Brazil. We aimed to know the communities structure pattern and the influence of geographical distance and environmental variables on them, along a gradient of fragmented habitats at both local and landscape scales. Eight structural variables of the fragments served as an environmental distance measurement at the local scale while five metrics served as an environmental distance measurement at the landscape scale. Species presence-absence data were used to calculate the dissimilarity index. Beta...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Beta diversity; Environmental distance; Forest fragments; Landscape scale; Turnover.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000100123
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Efficiency of playback for assessing the occurrence of five bird species in Brazilian Atlantic Forest fragments Anais da ABC (AABC)
Boscolo,Danilo; Metzger,Jean Paul; Vielliard,Jacques M.E..
Playback of bird songs is a useful technique for species detection; however, this method is usually not standardized. We tested playback efficiency for five Atlantic Forest birds (White-browed Warbler Basileuterus leucoblepharus, Giant Antshrike Batara cinerea, Swallow-tailed Manakin Chiroxiphia caudata, Whiteshouldered Fire-eye Pyriglena leucoptera and Surucua Trogon Trogon surrucura) for different time of the day, season of the year and species abundance at the Morro Grande Forest Reserve (South-eastern Brazil) and at thirteen forest fragments in a nearby landscape. Vocalizations were broadcasted monthly at sunrise, noon and sunset, during one year. For B. leucoblepharus, C. caudata and T. surrucura, sunrise and noon were more efficient than sunset....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Playback; Birds; Forest fragments; Methodology development; Atlantic forest; São Paulo State.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652006000400003
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Bees (Hymenoptera: Apoidea) and flowers in natural forest patches of southern Pantanal Biota Neotropica
Boff,Samuel; Araujo,Andréa Cardoso; Pott,Arnildo.
This is the first systematic survey of bees in the Pantanal wetland, Brazil. We recorded bee species and their floral resources within grassland and natural forest edge habitats in the Pantanal. Surveys were conducted during two to four-days per month, for a total of 12 months. Overall, we recorded 56 bee species visiting a total of 63 flowering plants. Asteraceae and Fabaceae presented the highest number of visited species, however Hyptis suaveolens (Lamiaceae) was the plant most visited by different bee species (18). The most generalist native bee was Trigona fuscipennis visiting a total of 17 flowering plant species. Apis mellifera, an exotic bee, visited 27 species. We also report the overlap (37.5%) in the use of floral resources between the exotic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bees; Floral visitors; Forest fragments; Surveys.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400046
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The small mammals of the highly impacted North-eastern Atlantic Forest of Brazil, Pernambuco Endemism Center Biota Neotropica
Asfora,Paulo Henrique; Pontes,Antonio Rossano Mendes.
The Atlantic forest of Brazil is nowadays reduced to less than 8% of its total original area and yet many species remain to be described. The Atlantic Forest north to the São Francisco river - The Pernambuco Endemism Center (CEPE) - has less than 2% of its original forest cover and yet the knowledge on small mammals is scarce. Aiming to assess the small mammal community of this region surveys were carried out in 12 forest fragments of different sizes in distinct geographic areas of the CEPE. The capture-mark-recapture technique was used with live-traps set along linear transects. We recorded 15 species, two of which are in the IUCN Red List, but not in the Brazilian List of Threatened Species. The highest richness and abundance indices were recorded in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Atlantic forest; Forest fragments; Pernambuco Endemism Center; Small mammals.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000100004
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The community of Diptera (Insecta) colonizing axils of Alocasia macrorrhizos (L.) G.Don (Araceae), with records of Aedes aegypti (L.) and Aedes albopictus (Skuse) in urban areas of Manaus, Amazonas Biota Neotropica
Ferreira-Keppler,Ruth Leila; Neiss,Ulisses Gaspar; Torreias,Sharlene Roberta da Silva; Campos,Claudimir Menezes.
Abstract Alocasia macrorrhizos (L.) G.Don grows and proliferates in shaded areas in several forest fragments in urban zones. The adult plant has axils that accumulate rain water (phytotelmata) and serve as breeding sites for several families of aquatic insects. The objective of this study was to determine the composition of the entomofauna associated with water accumulations in axils of A. macrorrhizos in urban areas of Manaus, Brazil. Individuals of A. macrorrhizos were sampled in five forest fragments, between April/2005 and March/2007 in urban areas of Manaus, totaling 184 sampling units. A manual suction hose was used for the removal of entomofauna. A total of 1,941 immatures of Diptera were collected representing the following families: Culicidae...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Culicidae; Forest fragments; Mosquitoes; Phytotelmata; Vectors.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300201
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Feeding ecology of carnivores (Mammalia, Carnivora) in Atlantic Forest remnants, Southern Brazil Biota Neotropica
Rocha-Mendes,Fabiana; Mikich,Sandra Bos; Quadros,Juliana; Pedro,Wagner André.
The diet of some sympatric carnivore species in three Atlantic Forest remnants of Southern Brazil was studied in order to assess their food niche. We conducted monthly field trips between February 2003 and January 2004 to collect fecal samples that were subsequently examined together with others collected sporadically between November 1994 and January 2003. Of the 416 samples analysed, 198 had the "author" species identified through microscopic analysis guard hairs, which revealed the presence of 10 carnivores and some information about their diet. Puma yagouaroundi had the largest dietary niche breadth, whereas Leopardus tigrinus and Nasua nasua showed the lowest values. Extensive niche overlap was observed between L. tigrinus and N. nasua, L. tigrinus...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carnivores; Diet; Endangered species; Atlantic Forest; Forest fragments; Neotropics; Niche overlap.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032010000400001
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Feeding ecology of Marmosa demerarae (Thomas, 1905) and Marmosops bishopi (Pine, 1981) (Mammalia, Didelphidae) in forest fragments of the southern Amazon Mastozool. neotrop.
dos Santos Filho,Manoel; de Souza Valois,Elderson Mariano; Alves Ignácio,Aurea Regina; De Lázari,Patrick Ricardo; de Almeida Chiquito,Elisandra; Lopes Lázaro,Wilkinson.
We assessed the relative diet composition and level of trophic niche overlap of two sympatric didelphids, Marmosa demerarae and Marmosops bishopi, through the evaluation of food items consumed in forest fragments of different sizes in the southern Amazon region. The stomach contents of 107 individuals (42 M. demerarae and 65 M. bishopi) were analyzed by volume and frequency. The degree of similarity between the diets of the two species was quantified using Pianka’s index. The relative importance of the different food items consumed was quantified with the Index of Alimentary Importance. Both species revealed flexibility in their feeding preferences but consumed predominantly coleopterans. Vegetable items were only identified in the diet of M....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coleopterans; Diet overlap; Forest fragments; Pasture matrix.
Ano: 2017 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832017000200014
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Fitossociologia de um remanescente de mata sobre tabuleiros no norte do estado do Rio de Janeiro (Mata do Carvão) Rev. Bras. Bot.
SILVA,GUILHERME C. DA; NASCIMENTO,MARCELO T..
As formações florestais sobre tabuleiros terciários ocorrem hoje na forma de pequenos fragmentos desde o Rio Grande do Norte até o Rio de Janeiro. No norte fluminense, a Mata do Carvão (1.053 ha) é o maior remanescente. Este trabalho descreve a estrutura e a composição florística desta mata, tendo por objetivo compará-la com outras matas da região. Foram estabelecidas quatro parcelas de 50 m x 50 m em uma área selecionada, sem vestígios de corte e de fogo. Todas as árvores com DAP > ou = 10 cm foram amostradas e plaqueadas. Árvores mortas foram medidas mas não plaqueadas. Um total de 564 árvores foram amostradas. Foram encontradas 34 famílias, sendo as de maior número de espécies Leguminosae (18), Myrtaceae (8) e Euphorbiaceae (6). As famílias mais...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Atlantic forest; Forest fragments; Floristic; Forest conservation; Tabuleiro forest.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000100006
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Fitossociologia de um remanescente de floresta higrófila (mata de brejo) em Campinas, SP Rev. Bras. Bot.
TONIATO,MARIA TERESA ZUGLIANI; LEITÃO FILHO,HERMÓGENES DE FREITAS; RODRIGUES,RICARDO RIBEIRO.
Foi realizado um levantamento fitossociológico em dois fragmentos de floresta higrófila (mata de brejo) no município de Campinas, SP. Em cada fragmento foram alocadas 10 parcelas contíguas de 10 m x 10 m e amostrados todos os indivíduos com PAP (perímetro à altura do peito) <FONT FACE="Symbol">³</FONT> 10 cm. Os dados dos dois fragmentos foram agrupados e analisados em conjunto. Ao todo foram amostrados 955 indivíduos de 55 espécies, 44 gêneros e 29 famílias. Foi observada baixa diversidade em espécies (H’ = 2,80 nats/indivíduo). As espécies de maior IVI, em ordem decrescente, foram Calophyllum brasiliensis (Clusiaceae), Protium almecega (Burseraceae), Styrax pohlii (Styracaceae), Syagrus romanzoffiana (Arecaceae), Talauma ovata (Magnoliaceae),...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Swamp forest; Forest fragments; Floristics; Phytosociology; Campinas/SP/BR.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041998000200012
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O que é melhor para manter a riqueza de espécies de morcegos (Mammalia, Chiroptera): um fragmento florestal grande ou vários fragmentos de pequeno tamanho? Zoologia
Reis,Nelio Roberto dos; Barbieri,Márcio Luiz da Silva; Lima,Isaac Passos de; Peracchi,Adriano Lúcio.
This study was carried out with the objective of evaluating if the size of forest fragments affects the diversity of bat species. In order to do that, seven fragments were studied in Londrina, Paraná: five small fragments, whose areas varied between 1 and 10 ha; a fragment which is considered medium-sized (Parque Municipal Arthur Thomas - 85,47 ha.); and a large fragment (Parque Estadual Mata dos Godoy - 680 ha.). Thirty three species were collected. Ten species were common to all three types of fragments: Chrotopterus auritus (Peters, 1856), Carollia perspicillata (Linnaeus, 1758), Artibeus fimbriatus Gray, 1838, Artibeus lituratus (Olfers, 1818), Platyrrhinus lineatus (E. Geoffroy, 1810), Pygoderma bilabiatum (Wagner, 1843), Sturnira lilium (E. Geoffroy,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bats; Chiroptera; Forest fragments; Species diversity.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000200009
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Diversidade de morcegos (Chiroptera, Mammalia) em fragmentos florestais no estado do Paraná, Brasil Zoologia
Reis,Nelio Roberto dos; Peracchi,Adriano Lúcio; Sekiama,Margareth Lumy; Lima,Isaac Passos de.
The bay of the Tibagi river, a place which goes through quick environmental alterations, has three forest fragments: the "Floresta Nacional do Irati" (3.572 ha), the "Reserva Biológica da Klabin" (11.116 ha) and the "Parque Estadual Mata dos Godoy" (680 ha). Here, Myotis ruber (E. Geoffroy, 1806) and Chiroderma doriae Thomas, 1891 can be found, these are threatened bats, and three species, Pygoderma bilabiatum (Wagner, 1843), Myotis levis (I. Geoffroy, 1824) and Rogheessa tumida H. Allen, 1866, which are presumably threatened. Using the same effort of capture in the three places, it was stated that the "Floresta Nacional do Irati" with low vegetation diversity, showed nine species of bats. The "Parque Estadual Mata dos Godoy", although it's five times...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chiroptera; Bats; Diversity; Forest fragments.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000300015
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Bats (Mammalia, Chiroptera) in the Ponta Grossa region, Campos Gerais, Paraná, Brazil Zoologia
Zanon,Cibele M. V.; Reis,Nélio R. dos.
The diet, reproduction and activity time of bat species found in Ponta Grossa county, Campos Gerais region, were studied. Collections were conducted in four forest fragments, during 272 hours, on 48 m² of nets and roosting sites; the total capture effort was 1.52.10³ h.m². Eight species (247 individuals) were registered: Artibeuslituratus (Olfers, 1818), Sturniralilium (E. Geoffroy, 1810), Desmodusrotundus (E. Geoffroy, 1810) (Phyllostomidae); Tadaridabrasiliensis (Desmarest, 1819), Eumopsauripendulus (Shaw, 1800) (Molossidae); Eptesicusbrasiliensis (Shaw, 1800), Myotisnigricans (Schinz, 1821), and Histiotusvelatus (I. Geoffroy, 1824) (Vespertilionidae). The Phyllostomidae family was the most frequently captured. Solanaceae, Moraceae, Piperaceae, and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bat ecology; Forest fragments; Molossidae; Phyllostomidae; Vespertilionidae.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000200010
Registros recuperados: 13
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