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| Registros recuperados: 16 | |
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| TSUCHIYA,Akio; HIRABUKI,Yoshihiko; NISHIZAWA,Toshie; LISBOA,Pedro Braga; SILVA,Carlos Rosário da. |
| In order to compare the development of strata in the early stages of secondary forest succession with vessel parameters of the tree species, a forest inventory was carried out in 4-year (Q1: 48 m2), 11-year (Q2: 400 m2) and 20-year (Q3: 400 m2) forests and vessel parameters were investigated from stem cross sections of 18 species obtained in Q2. Thirty three species (21 families), 77 species (35 families), 39 species (20 families) were found in Ql, Q2, Q3, respectively. The percentage of dead individuals, dead stems and the percentage of individuals with multiple stems increased with time after clear cutting. Also, the total D2H of Q3 was 26.1 times that of Q1, and the development of strata started in Q2 and Q3. The image analysis of vessel size, area and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazonia; Secondary forest; Strata; Image analysis; Vessels. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672002000200241 |
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| Oziegbe,Modupe B.; Muoghalu,Joseph I.; Oke,Samson O.. |
| Litterfall, precipitation and nutrient fluxes were investigated in a 0.25 ha plot of a secondary lowland rain forest in Ile-Ife, Nigeria, for a period of one year. The study determined the magnitude of nutrient fluxes through (litterfall, incident rainfall, throughfall and stemflow) and evaluated the relative importance of these components as pathways of nutrient transport to the soil of this forest. There was a significant monthly variation in litterfall and the highest values of the standing crop of litter occurred from November to March. The concentration of elements in both throughfall and stemflow were higher than those of incidence rainfall. Greater quantities of calcium, magnesium, iron, zinc, copper and nitrogen were deposited annually from the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nutrient deposition; Rainfall; Litter; Soil; Secondary forest. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000300020 |
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| Lombardi,Julio Antonio; Temponi,Lívia Godinho; Leite,Claudia Aparecida. |
| This is a 30-month study of mortality rates and diameter growth rates of lianas in a semideciduous forest fragment in Belo Horizonte, Minas Gerais State, Brazil. Results are presented for 484 specimens of lianas, of which 103 experienced individual mortality (21.3% of the sampled population). Mortality varied according to class of stem diameter, but did not vary throughout the months of year, or between seasons or years. Mortality rates were higher than those recorded in other studies, perhaps due to the age of this secondary forest. Stem diameter growth rates were measured for 385 lianas, the survivors after 30 months plus four plants that died just before the final census, and averaged 1.2mm/year, ranging from 0mm/year (Chioccoca alba) to 4.8mm/year... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lianas; Mortality; Diameter growth; Minas Gerais State; Secondary forest. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33061999000200005 |
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| Römbke,Jörg; Schmidt,Petra; Höfer,Hubert. |
| The aim of this study was to evaluate abundance, biomass and diversity of earthworms in the southern coast region of the Mata Atlântica biodiversity hotspot. A total of 51 study sites in pastures, banana monocultures, mixed agroforestry systems, secondary forests in succession and old-growth forests near the coast of Paraná, Brazil, were evaluated. Each site was sampled once. Species richness of the earthworms was generally low and varied little between sites. At all sites except for one, the peregrine species Pontoscolex corethrurus (Glossoscolecidae) strongly dominated. Three other peregrine species, Amynthas corticis, Amynthas gracilis (Megascolecidae) and Ocnerodrilus occidentalis (Ocnerodrilidae), were frequent in moist sites. No autochthonous species... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pontoscolex corethrurus; Atlantic Forest; Biodiversity; Oligochaeta; Peregrine species; Secondary forest. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800037 |
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| WELLBAUM,CHRISTIAN; SCHOENLEIN-CRUSIUS,IRACEMA HELENA; SANTOS,VALÉRIA BARRO DOS. |
| A diversidade e a ocorrência de fungos em folhas em decomposição nos ambientes terrestre e aquático foram estudadas durante o verão e inverno sob floresta de Eucalyptus spp., mata secundária e mata de interseção na Ilha dos Eucaliptos, Represa do Guarapiranga, São Paulo, SP. Um total de 41 táxons de fungos filamentosos (98 ocorrências) foram encontrados, dos quais 36 pertenciam ao grupo dos fungos mitospóricos, quatro à Zygomycota e um à Ascomycota, através do método de lavagem de discos de folhas seguido por plaqueamento em meio de cultura. Deste total, foram registrados 28 táxons (37 ocorrências) na área dos Eucalyptus spp., 21 táxons (33 ocorrências) na área da mata secundária e 20 táxons (28 ocorrências) na mata intermediária. As folhas submersas... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leaf litter decomposition; Fungi; Eucalyptus; Secondary forest. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041999000100009 |
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| Penhalber,Elizabeth de F.; Vani,Waldir Manto. |
| (Floração e chuva de sementes em mata secundária em São Paulo, SP). O florescimento e a chuva de sementes foram estudados em trecho de mata secundária em São Paulo, SP, através da coleta de material reprodutivo depositado em peneiras de 0,5 x 0,5 m, recolhido mensalmente entre janeiro e dezembro de 1993. Foram identificadas 90 espécies pertencentes a 37 famílias. Observaram-se padrões sazonais de floração e de frutificação, sendo que a maioria das espécies floresceu a partir de setembro, com picos de floração e de frutificação em novembro. O padrão de floração encontrado foi o mesmo verificado em outras florestas da região, sendo o de frutificação mais sazonal. Na chuva de sementes, as espécies anemocóricas dispersaram propágulos predominantemente em... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Flowering; Seed rain; Secondary forest; São Paulo; Brazil. |
| Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041997000200011 |
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| DISLICH,RICARDO; KISSER,NABOR; PIVELLO,VÂNIA R.. |
| Invasões biológicas são uma ameaça à manutenção da diversidade biológica, especialmente em fragmentos de hábitat pequenos e isolados. Este trabalho reporta a invasão da Reserva Florestal da Cidade Universitária "Armando de Salles Oliveira" (23º34' S e 46º43' W), um pequeno (10 ha) fragmento florestal, por uma palmeira nativa da Austrália, através da descrição dos padrões espaciais, estrutura de tamanhos e aspectos dinâmicos de sua população. Indivíduos adultos (DAP > 25 cm) se distribuem por grande parte da Reserva. Entre as árvores com DAP > ou = 9,5 cm, em uma área de 2,1 ha, A. cunninghamiana foi a espécie com maior densidade, com 305 indivíduos (22,5% do total). A espécie esteve ausente em locais com histórico recente de perturbação antrópica,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Archontophoenix cunninghamiana; Biological invasion; Secondary forest. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042002000100008 |
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| Vieira,Fábio de Almeida; Appolinário,Vivette; Fajardo,Cristiane Gouvêa; Carvalho,Dulcinéia de. |
| We investigated the reproductive biology of Protium spruceanum (Benth.) Engler in vegetation corridors of secondary Atlantic forest in Lavras, southern Minas Gerais State, Brazil. The reproductive phenology was investigated fortnightly over a one year period. Floral biology studies involved pollen viability analysis, nectar production, stigmatic receptivity, pollen tube growth, visiting insect species and visit rates. The small, pale yellowish flowers (0.3-0.4 cm diameter) are functionally unisexual and organized in dense inflorescences (ca. 45 flowers). P. spruceanum presented annual flowering between September and November. Staminate flowers supplied a high percentage of viable pollen (90.6%) and relatively abundant nectar (x = 4.5 μL). Pistillate... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dioecy; Floral visitors; Flowering; Fruiting; Secondary forest. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042010000400018 |
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| Melo,Vander Freitas; Orrutéa,Alessandro Góis; Motta,Antônio Carlos Vargas; Testoni,Samara Alves. |
| ABSTRACT Many Amazonian farmers use the slash-and-burn method rather than fertilization for crop production. The aim of the present study was to evaluate changes in the morphological, physical, and chemical properties of naturally fertile Inceptisols after conversion from native forest to different uses in southern Amazonia, Brazil. Land covered by dense native forest (NF) was split into four areas of 1.0 ha each. Three areas were slashed and burned and then cultivated for 11 years with coffee (CO), secondary forest (SF), and pasture (PA). Four soil profiles were sampled in each treatment (four uses × four replicates). The mean value distribution of each physical and chemical analysis was determined for different depths, and standard error bars were placed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Secondary forest; Coffee; Pasture; Slash and burn; Ash effect. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100523 |
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| Silva,Antonio K. L.; Sousa,Adriano M. L. de; Santos,Joyse T. S. dos; Villela,João M.; Martorano,Lucieta G.; Crestana,Silvio. |
| ABSTRACT Currently, an activity that has become strategic at a national level is the cultivation of oil palm (Elaeis guineensis) in the northeast region of the Pará State, in eastern Brazilian Amazon. However, the impacts of this crop expansion on the hydro-sedimentological cycle are still unknown. Therefore, this study estimated the impacts of oil palm crop expansion on sediment production in a sub-basin under consolidated use of this crop. The Soil and Water Assessment Tool (SWAT) model was applied in the Mariquita sub-basin, calibrated by the flow regionalization technique, using data measured in the field with a current meter. Simulation results indicated an increase in sediment production between the years 2008 and 2013, which can be attributed to the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: SWAT; Ungauged river basin; Secondary forest; Northeastern Pará. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000500344 |
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| Registros recuperados: 16 | |
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