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Registros recuperados: 6
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Atlantic Forest succession over calcareous soil, Parque Estadual Turístico do Alto Ribeira - PETAR, SP 88
AIDAR,MARCOS PEREIRA MARINHO; GODOY,JOÃO RUFFIN LEME DE; BERGMANN,JANINE; JOLY,CARLOS ALFREDO.
The forest succession after abandonment of slash-and-burn agriculture over calcareous soil in Brazilian Atlantic Forest was assessed. This is one of the world's most threatened Biome, with only 8% remaining. The study area is located over calcareous soil inside the Alto Ribeira Touristic State Park (PETAR), southeast Brazil. The phytossociological survey showed a successional pattern dominated by species of Leguminosae, especially Piptadenia gonoacantha (Mart.) J.F. Macbr. This species occurs in calcareous soils as a substitute of Tibouchina pulchra (Cham.) Cogn. (Melastomataceae) that is the most usual dominant tree species in early succession over acidic soil, which is the most common situation in this Biome. These results are important for a better...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Secondary succession; Brazilian Atlantic Forest; Tropical calcareous soil; Piptadenia gonoacantha; Slash-and-burn agriculture.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000400012
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Diurnal versus nocturnal pollination success in Billbergia horrida Regel (Bromeliaceae) and the first record of chiropterophily for the genus 42
MARQUES,JUÇARA S.; TAGLIATI,MARCELA C.; FARIA,ANA PAULA G..
Billbergia horrida is endemic of the Atlantic Forest fragments in southeastern Brazil and characterized by flowers with typical traits for pollination by nocturnal animals. Although the majority of Billbergia species rely on diurnal pollination by hummingbirds, B. horrida is also visited by bats and this study evidences for the first time the occurrence of chiropterophily within the genus. The role of different groups of pollinators on the reproductive success of B. horrida was evaluated, as well as the correlation of nectar features in sustaining these animals during different periods of the day. Bats contributed to 82.1% of fruit set of B. horrida. Hummingbirds, in turn, contributed to only 10% of fruit set, and were poorly related to the reproductive...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazilian Atlantic Forest; Floral biology; Hummingbirds pollination; Reproductive success.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200835
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Growth, Biomass and Carbon Stocks in Forest Cover Planted in an Area of Bauxite Mining in Rehabilitation 90
Valente,Fernanda Daniele de Almeida; Castro,Marllon Fialho de; Torres,Carlos Moreira Miquelino Eleto; Neves,Júlio César Lima; Silva,Ivo Ribeiro; Oliveira,Teógenes Senna.
ABSTRACT Forest cover in areas degraded by mining is an alternative way of mitigating CO2 concentrations in the atmosphere by fixing C in tree biomass. This study evaluated the growth and C stocks of forest cover in an area of bauxite mining with four sources of fertilizer. Height (Ht), diameter at ground level (DGL), and diameter at breast height (DBH) were determined in Anadenanthera peregrina (Ap), clonal Eucalyptus (Euc), and a mixed plantation of 16 native forest species (Nat) at 6, 18, 36, and 56 months of age. Trunk+bark volume, biomass, and C stock were also determined for these forest covers at 56 months of age. The fertilization treatments were a standard (SF) adopted by the company, SF plus organic fertilizer (OF), chemical fertilizer (CF), and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazilian Atlantic Forest; C sequestration; Land reclamation; Topsoil revegetation; Tree biomass.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100308
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Occurrence of Atta cephalotes (L.) (Hymenoptera: Formicidae) in Alagoas, Northeastern Brazil 82
Corrêa,Michele M.; Bieber,Ana G.D.; Wirth,Rainer; Leal,Inara R..
Atta cephalotes (L.) presents a wide distribution in the Neotropical region. In Brazil, this species is disjunctly distributed in the Amazon region and in the states of Maranhão, Pernambuco and southern Bahia, all of which belong to Northeast Region. Here we report on a survey of Atta colonies in 42 remnants of the Atlantic rainforest in Alagoas and Pernambuco. Our results include new records of A. cephalotes in the state of Alagoas and thereby extend the known distribution area of its southern populations in Northeast Brazil. In addition, the species was strongly associated with well-conserved forest remnants, indicating that it is highly sensitive to disturbance. We suggest that, in the fragmented scenario of the northeastern Atlantic forest, A....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazilian Atlantic Forest; Disjunct distribution; Leaf-cutting ant; New record; Species replacement; Disturbance sensitive taxon.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000400023
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Reproductive phenology, seed removal and early regeneration in relation to distance from parental plants of a native palm in small Atlantic forest fragments 39
Mariano,Vanessa; Christianini,Alexander V..
ABSTRACT The Brazilian Atlantic Forest is a global biodiversity hotspot, but most of what remains are small fragments. Small fragments are often harsh environments for forest plant recruitment due to edge effects and the loss of frugivorous animals that provide seed dispersal. We recorded the one-year reproductive phenology of the keystone palm Syagrus romanzoffiana in small (<2.5ha) Atlantic Forest fragments in southeastern Brazil. We tested the Janzen-Connell hypothesis with seed-removal experiments and followed the five-year survival of recruits in relation to the distance from parental plants. Palms produced many fruits throughout the year (mean 2,600/plant). More seedlings were found away from parental plants than near them, thereby supporting the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazilian Atlantic Forest; Crop size; Habitat fragmentation; Janzen-Connell hypothesis; Large seeds; Palms; Seed dispersal; Seed predation; Seedling survival; Syagrus romanzoffiana.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000200176
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The use of singleplex and nested PCR to detect Batrachochytrium dendrobatidis in free-living frogs 58
Coutinho,Selene Dall'Acqua; Burke,Julieta Catarina; Paula,Catia Dejuste de; Rodrigues,Miguel Trefaut; Catão-Dias,José Luiz.
Many microorganisms are able to cause diseases in amphibians, and in the past few years one of the most reported has been Batrachochytrium dendrobatidis. This fungus was first reported in Brazil in 2005; following this, other reports were made in specimens deposited in museum collections, captive and free-living frogs. The aim of this study was to compare singleplex and nested-PCR techniques to detect B. dendrobatidis in free-living and apparently healthy adult frogs from the Brazilian Atlantic Forest. The sample collection area was a protected government park, with no general entrance permitted and no management of the animals there. Swabs were taken from the skin of 107 animals without macroscopic lesions and they were maintained in ethanol p.a. Fungal...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chytridiomycosis; Batrachochytrium dendrobatidis; Frogs; Brazilian Atlantic Forest; PCR.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000200551
Registros recuperados: 6
Primeira ... 1 ... Última
 

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