|
|
|
| Registros recuperados: 38 | |
|
| |
|
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
| |
|
|
| PONZONI,FLÁVIO J.; GALVÃO,LÊNIO S.; EPIPHANIO,JOSÉ C.N.. |
| To evaluate the role played by the spatial resolution in distinguishing land cover classes in the Amazon region, different levels of spatial resolution (60, 100, 120, 200 and 250 meters) were simulated from a Landsat_5 Thematic Mapper (TM) image. Thematic maps were produced by visual interpretation from the original (30 x 30 meters) and simulated set of images. The map legend included primary forest, old and young woody secondary succession, and non-forest. The results indicated that for the discrimination between primary forest and non-forest, spatial resolution did not have great influence for pixel size equal or lower than 200 meters. The contrary was verified for the identification of old and young woody secondary vegetation due to their occurrence in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Spatial resolution; Remote sensing; Amazon region; Thematic maps; Tropical rain forest. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652002000400011 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| Moguel, Patricia; ;. |
| The quest for an appropriate system of management for tropical ecosystems necessitates that ecologists consider the accumulated experiences of indigenous peoples in their long-term management of local resources, a subject of current ethnoecology. This paper provides data and empirical evidence of an indigenous multiple-use strategy (MUS) of tropical forest management existing in Mexico, that can be considered a case of adaptive management. This conclusion is based on the observation that some indigenous communities avoid common modernization routes toward specialized, unsustainable, and ecologically disruptive systems of production, and yet probably achieve the most successful tropical forest utilization design, in terms of biodiversity conservation,... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Adaptive management; Ethnoecology; Indigenous peoples; Mexico; Multiple use; Tropical rain forest. |
| Ano: 2003 |
|
| |
|
|
| 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 |
|
| |
|
| |
|
| |
|
| |
|
|
| 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 |
| |
|
| |
|
| |
|
| |
|
|
| 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 |
| |
|
| |
|
| |
| Registros recuperados: 38 | |
|
|
|
