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| Registros recuperados: 38 | |
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| Duarte,Lorrane Marques; Bertini,Simone Cristina Braga; Stürmer,Sidney Luiz; Lambais,Marcio Rodrigues; Azevedo,Lucas Carvalho Basilio. |
| ABSTRACT Arbuscular mycorrhizal fungi (AMF) play an important role in plant community productivity and structure, and so studying the factors that affect the diversity and structure of this fungal community is important for understanding their ecology in tropical forests. We investigated AMF spore communities and root colonization under three forest phytophysiognomies (Restinga Forest, REF; Lowland Ombrophilous Dense Forest, LLF; and Montane Ombrophilous Dense Forest, MTF). Spore abundance was lowest in LLF and highest in REF, with no statistical differences relative to MTF. Spore diversity indices and root colonization rates were not statistically different among the phytophysiognomies. However, principal components analysis revealed that AMF community... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arbuscular mycorrhiza; Glomeromycotina; Hierarchical partitioning; Plant community; Soil attributes; Soil microbiology; Tropical rain forest. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000100050 |
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| Silva,Rejane Maria da; Ribeiro,Rayane de Tasso Moreira; Souza,Renata Janaína Carvalho de; Oliveira,Antônio Fernando Morais de; Silva,Suzene Izídio da; Gallão,Maria Izabel. |
| ABSTRACT Biosynthesized from very long-chain fatty acid wax precursors, n-alkanes make a valuable contribution to the taxonomy of plants. The alkane components of foliar epicuticles of seven Neotropical species of Lecythidaceae were investigated: Bertholletia excelsa, Cariniana legalis, Couroupita guianensis, Eschweilera alvimii, Eschweilera ovata, Gustavia augusta and Lecythis pisonis. Specimens were collected in the metropolitan area of Recife, Pernambuco, and their n-alkane fractions were analyzed by gas chromatography. The chemical relationships among the species were then evaluated using cophenetic correlation and UPGMA. Among the seven species, a total of 15 n-alkanes, with 21-35 carbon atoms, were identified and formed a consistent group of B.... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Lecythidaceae; Neotropics; Taxonomy; Tropical rain forest; Wax. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100137 |
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| Xerez,Roberto de; Viana,Gustavo Glória; Pujol-Luz,José Roberto. |
| The puparia of Cyphomyia aurifrons Wiedemann, 1830, and Cyphomyia picta Schiner, 1868 are described for the first time. The larvae were collected under the bark of fallen trees in a tropical rain forest at Ilha da Marambaia, State of Rio de Janeiro, Brazil, (23º04'15"S, 43º53'59"W, sea level, approximately 42 Km²). Some biological notes are also presented. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soldier flies; Taxonomy; Tropical rain forest. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752004000100014 |
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| Cysneiros,Vinicius Costa; Mendonça-Junior,Joaquim de Oliveira; Gaui,Tatiana Dias; Braz,Denise Monte. |
| The State of Rio de Janeiro still holds unknown portions of the Atlantic Forest, which represent gaps in the knowledge of this ecosystem. Paracambi and neighbor municipal districts comprise a vast stretch of virtually unknown forest that makes up part of the Serra do Mar biodiversity corridor. The following study describes the tree community structure in a stretch of the ombrophilous Atlantic Forest, in the Parque Natural Municipal do Curió (Curio MNP), Paracambi, Rio de Janeiro, which serves as the basis to evaluate species diversity and conservation status. The altitudes in the area ranges from 100 to 690 m and the climate varies from mild subtropical to tropical hot and humid. Forty plots (10x10m) were randomly placed along the area, where all the stems... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tropical rain forest; Phytosociology; Ecological succession; Serra do Mar biodiversity corridor; Curio Municipal Natural Park- Paracambi. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000200201 |
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| Lorenzon,Maria Cristina Affonso; Conde,Marilena de Menezes Silva; Barbosa,Celso Guimarães. |
| This study examined species richness and relative abundance of eusocial Apidae in an insular region of rain-forest, southeastern Brazil. Sampling took place during one year, using an standardized method with entomological net, at sites of secondary growth habitats surrounded by Atlantic rain-forest. Thirteen species of eusocial Apidae were netted at flowers, over 80% of the captured individuals were meliponine species, although the presence of Apis mellifera, commonly dominant in Brazilian habitats. Foraging activity of these bee species were essentially non-seasonal, apparently affected by high humidity. The patterns in abundance and species richness observed in Ilha Grande differed with other studies conducted at tropical islands, which were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tropical rain forest; Meliponine species; Bee community; Niche. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000600007 |
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| RENCK, A.; LEHMANN, J.; KAISER, K.; MARQUES, J.; TEIXEIRA, W. G.. |
| Study for find out the short-term dynamics of applied fertilizer. In a soil pit a data logger system connected to tensiometers and TDR was installed up to a depth of 3.5m under pueraria in an agroforestry system (cupuacu, peach palm, Brazil nut, urucum). After a rainfall event, the soil water suction at 0.1m depth increased immediately, and fast responses were seen even up to a depth of 0.9m. This result may indicate that nutrients may be leached very fast even in these soil with high clay contents. The N concentrations in the soil solution relevantly increased at 0.1m depth during the same time period, as shown for peach palm. First, the ammonium concentrations increased, but nitrate contents followed rapidly indicanting a fast nitrification in the... |
| Tipo: Parte de livro |
Palavras-chave: Brasil; Amazonas; Manaus; Tropical rain forest; Floresta Tropical Úmida; Relação Solo-Água; Soil water. |
| Ano: 1998 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/668344 |
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| MORAES, E. de; TEIXEIRA, L. B.; CANTO, A. do C.; ITALIANO, E. C.. |
| Com o objetivo de avaliar processos de formação de pastagens cultivadas, visando a manutenção, a qualidade e a persistência das forrageiras, instalou-se um experimento no Campo Experimental de Zootecnia da UEPAE Manaus. As análises revelaram teores de 2 ppm de fósforo antes da queima da vegetação original e de 5,2 ppm de fósforo, 3,1 me% de cálcio + magnésio, 0,56 me% de alumínio e pH de 4,9, após a queima da floresta. |
| Tipo: Folhetos |
Palavras-chave: Cultivo; Brasil; Amazonas; Tropical rain forest; Desmatamento; Floresta Tropical Úmida; Pastagem; Planta Forrageira; Forage crops; Deforestation; Pastures. |
| Ano: 1981 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/665312 |
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| Dominy, Nathaniel J; University of Hong Kong; njdominy@hkusua.hku.hk; Duncan, Brean; Dynamac Corporation, Kennedy Space Center; DuncaBW@kscems.ksc.nasa.gov. |
| Since the completion of the Navstar Global Positioning System (GPS) in 1995, the integration of GPS and Geographical Information Systems (GIS) technology has expanded to a great number of ecological and conservation applications. In tropical rain forest ecology, however, the technology has remained relatively neglected, despite its great potential. Notwithstanding cost, this is principally due to (1) the difficulty of quality satellite reception beneath a dense forest canopy, and (2) a degree of spatial error unacceptable to fine-scale vegetation mapping. Here, we report on the technical use of GPS/GIS in the rain forest of Kibale National Park, Uganda, and the methodology necessary to acquire high-accuracy spatial measurements. We conclude that the... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Kibale National Park; Uganda; Biodiversity conservation; Canopy interference; Differential correction; Frugivores; Geographic information systems; Global positioning system; Seed dispersal; Spatial ecology; Tropical rain forest; Vegetation mapping. |
| Ano: 2001 |
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| SHIFT ENV 42/2 (Manaus-AM).. |
| During the first phase of the project (january 1, 1995 until april 30, 1998), the influence of the water and element supply of tree different plantation systems on the growth and wood formation of eight native tree species (Swietenia macrophylla, Carapa guianensis, Cedrela odorata, Dipterex odorata, Hymenaea courbaril, Ceiba pentandra, Virola surinamensis, Tabebuia heptaphylla) was investigated. In 1998, the data were analyzed. The results subsequently served as a basis for the second phase of the project (comp. chapter 5) which should give deeper insight into the relationship between exogenous and endogenous input, the plant metabolism, and the wood formation and wood quality of plantation-grown trees. due to the results obtained in these studies in the... |
| Tipo: Relatórios técnicos |
Palavras-chave: Agrofloresta; Brasil; Amazonas; Manaus; Tropical rain forest; Reclation; Forestr trees; Cultivo Multiplo; Deterioração do Solo; Essência Florestal; Floresta Tropical Úmida; Recuperação do Solo; Agroforestry; Environmental degradation; Multiple cropping. |
| Ano: 1998 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/668164 |
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| MORAES,REGINA MARIA DE; DELITTI,WELINGTON BRAZ CARVALHO; STRUFFALDI-DE VUONO,YARA. |
| Litterfall and transfer of nutrients was estimated in two tropical coastal forests of Brazil - the Atlantic and the Restinga Forests at Cardoso Island, São Paulo. Samples were collected monthly, from June 1990 to May 1991, using thirty 0.25 m2 traps. There were significant differences in litter production between the Atlantic Forest (6.3 t.ha-1.year-1) and the Restinga Forest (3.9 t.ha-1.year-1). Litterfall was continuous throughout the year with maximum in the beginning of the rainy season in both sites. The annual return of mineral elements through litter in the Atlantic Forest was (kg.ha-1): 101.8 N, 3.8 P, 20.3 K, 60.0 Ca, 18.0 Mg, and 14.6 S and in the Restinga Forest was: 27.5 N, 1.0 P, 6.5 K, 30.0 Ca, 10.9 Mg, and 6.6 S. The return, although small,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Litterfall; Litter nutrient content; Nutrient cycling; Tropical rain forest; Restinga forest. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041999000100002 |
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| Registros recuperados: 38 | |
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