|
|
|
| Registros recuperados: 16 | |
|
|
| Barreto,Denize Caranhas de Sousa; Gonçalves,José Francisco de Carvalho; Santos Júnior,Ulysses Moreira dos; Fernandes,Andreia Varmes; Bariani,Adriana; Sampaio,Paulo de Tarso Barbosa. |
| The rosewood (Aniba rosaeodora Ducke) is a native tree species of Amazon rainforest growing naturally in acidic forest soils with reduced redox potential. However, this species can also been found growing in forest gaps containing oxide soils. Variations in the forms of mineral nitrogen (NO3- or NH4+) may be predicted in these different edaphic conditions. Considering that possibility, an experiment was carried out to analyze the effects of different NO3-:NH4+ ratios on the growth performance, mineral composition, chloroplastid pigment contents, photochemical efficiency photosystem II (PSII), and nitrate redutase activity (RN, E.C.1.6.6.1) on A. rosaeodora seedlings. Nine-month-old seedlings were grown in pots with a washed sand capacity of 7.5 kg and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chloroplastid pigments; Chlorophyll a fluorescence; Tree species. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672007000400008 |
| |
|
|
| Lima,Renato A. Ferreira de; Oliveira,Alexandre Adalardo de; Colletta,Gabriel Dalla; Flores,Thiago Bevilacqua; Coelho,Rubens L. Gayoso; Dias,Pedro; Frey,Gabriel Ponzoni; Iribar,Amaia; Rodrigues,Ricardo Ribeiro; Souza,Vinícius Castro; Chave,Jérôme. |
| Abstract DNA barcoding helps to identify species, especially when identification is based on parts of organisms or life stages such as seeds, pollen, wood, roots or juveniles. However, the implementation of this approach strongly depends on the existence of complete reference libraries of DNA sequences. If such a library is incomplete, DNA-based identification will be inefficient. Here, we assess if DNA barcoding can already be implemented in species-rich tropical regions. We focus on the tree flora of São Paulo state, Brazil, which contains more than 2000 tree species. Using new DNA sequence data and carefully assembled GenBank accessions, we assembled 12,113 sequences from ten different regions. The ITS, rbcL, psbA-trnH, matK and trnL regions were better... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversity assessment; Plant barcoding; Species conservation; Tree species. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000400661 |
| |
|
| |
|
|
| DZUL-CAUICH,Henry Fernando; PUC-SOSA,Marili del Carmen; CANTO-OSORIO,Juan Miguel; BALLINA-GOMEZ,Horacio Salomón. |
| ABSTRACT In order to identify the role played by plant species as a food source in the fruit election of dispersing agents (Alouatta pigra Lawrence 1933, Atelesgeoffroyi Kuhl 1820 and frugivorous bats), we developed a study in dry tropical forests in Yucatan, Mexico. We recorded the fruits consumed by frugivorous bats using collectors and, for monkeys, we implemented the focal animal method. The number of fruits consumed by primates (A. pigra and A. geoffroyi) and bats were recorded, 342 and 386, respectively. It was determined that bats deposited fruits with some percentage of pulp, while monkeys contributed more with a fruits without pulp (pairwise LSD contrast p < 0.05). Among the variety of fruit species in the diet of primates, we detected that A.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alouatta pigra; Ateles geoffroyi; Seed handling; Tree species; Yucatan. |
| Ano: 2018 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2018000200141 |
| |
|
|
| Vivas,Caio Vinicius; Moraes,Ramiris César Souza; Alves-Araújo,Anderson; Alves,Marccus; Mariano-Neto,Eduardo; van den Berg,Cássio; Gaiott,Fernanda Amato. |
| The Atlantic Forest is a phytogeographic domain with a high rate of endemism and large species diversity. The Sapotaceae is a botanical family for which species identification in the Atlantic Forest is difficult. An approach that facilitates species identification in the Sapotaceae is urgently needed because this family includes threatened species and valuable timber species. In this context, DNA barcoding could provide an important tool for identifying species in the Atlantic Forest. In this work, we evaluated four plant barcode markers (matK, rbcL, trnH-psbA and the nuclear ribosomal internal transcribed spacer region -ITS) in 80 samples from 26 species of Sapotaceae that occur in the Atlantic Forest. ITS yielded the highest average interspecific... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Internal transcribed spacer; Taxonomy; Tree species; Tropical forest. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572014000500009 |
| |
|
| |
|
| |
|
|
| Santos,Alesandro S.; Borges,Daniela B.; Vivas,Caio V.; Berg,Cassio Van Den; Rodrigues,Polliana S.; Tarazi,Roberto; Gaiotto,Fernanda Amato. |
| Abstract Forest loss and fragmentation are the main threats to the maintenance of the Atlantic Forest, an important global biodiversity hotspot. Because of the current critical level of deforestation, ecological corridors are needed to facilitate species dispersion and gene flow among fragments. This study was conducted to investigate the genetic variability and gene pool sharing of Eschweilera ovata in five forest remnants in southern Bahia, Brazil using nuclear simple sequence repeat (nSSR) and plastid simple sequence repeat (cpSSR) microsatellite markers. cpSSR marker analysis revealed the domains of four haplotypes, showing that 80% of the individuals had only four maternal origins, reflecting a founder effect and/or genetic bottleneck. The results of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Functional connectivity; Tree species; Chloroplast; Founder effect; Simple sequence repeat development. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572019000400655 |
| |
|
| |
|
|
| Farias dos Santos,Joana; Roppa,Cristiane; Holanda de Oliveira,Schweyka Stanley; Valcarcel,Ricardo. |
| The study was taken in a reclamation area where soil was removed up to 13 meters deep in 1979, near Itaguaí county, Brazil (23º 55' 07'' S, 43º 49' 73'' O). In 2007 the composition and horizontal structure of the shrubby-arboreal strata was evaluated in five 13 years old forest plantations with similar environment conditions. For rehabilitation, rustic pioneer species were used to guarantee a sustainable successional process, which depends on species selection and their functional complementarities. Treatments were: T0 (control); T1 (100 % of exotic species); T2 (52% of exotic species); T3 (50% exotic and 50% native); T4 (39% exotic and 61% native); and T5 (15% exotic and 85% native). Variables measured were height, DBH (≥ 3.0 cm), basal area,... |
| Tipo: Journal article |
Palavras-chave: Degradation area; Mining; Tree species; Vegetal succession. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000100009 |
| |
|
|
| Steege, H. ter; Pitman, C.A.; Sabatier, D.; Baraloto, C.; Salomão, R.P.; Guevara, J.E.; Phillips, O.L.; Castilho, C.V.; Magnusson, W.E.; Mollino, J.-F.; Stevenson Diaz, P.R.; Costa , F.; Emilio, T.; Levis, C.; Schietti, J.; Souza, P.; Alonso, A.; Dallmeier, F.; Duque Montoya, A.J.; Fernandez Piedade, M.T.; Maas, P.; Araujo-Murakami, A.; Arroyo, L.; Gribel, R.; Fine, P.V.A.; Peres, C.A.; Toledo, M.; Aymard, G.A.; Baker, T.R.; Cerón, C.; Engel, J.; Petronelli, P.; Henkel, T.W.; Stropp, J.; Zartman, C.E.; Daly, D.; Neill, D.; Silveira, M.; Ríos Paredes, M.; Chave, J.; de Andrade Lima Filho, D.; Hoffman, B.; Møller Jørgensen, P.; Fuentes, A.; Schöngart, J.; Cornejo Valverde, F.; Di Fiore, A.; Jimenez, E.M.; Peñuela Mora, M.C.; Phillips, J.F.; Rivas, G.; Andel, T.R. van; Zent, E.L.; Hildebrand, P. von; Malhi, Y.; Prieto, A.; Rudas, A.; Ruschell, A.; Silva, N.; Vos, V.; Zent, S.; Oliveira, A.A.; Wang, O.; Cano Schutz, A.; Gonzales, T.; Trindade Nascimento, M.; Ramirez-Angulo, H.; Sierra, R.; Tirado , M.; Umaña Medina, M.N.; Heijden, G. van der; Vela, C.I.A.; Vilanova Torre, E.; Young, K.R.; Vriesendorp, C.; Baider, C.; Balslev, H.; Ferreira, C.; Mesones, I.; Torres-Lezama, A.; Urrego Giraldo, L.E.; Zagt, R.; Alexiades, M.N.; Monteagudo, A.; Hernandez, L.; Huamantupa-Chuquimaco, I.; Millikes, W.; Palacios Cuenca, W.; Pauletto, D.; Valderrama Sandoval, E.; Valenzuela Gamarra, L.; Dexter, K.G.; Feeley, K.; Lopez-Gonzalez, G.; Núñez Vargas, P.; Silman, M.R.; Montero, J.C.; Feldpausch, T.R.; Honorio Coronado, E.N.; Killeen, T.J.; Mostacedo, B.; Vasquez, R.; Assis, R.L.; Terborgh, J.; Wittmann, F.; Andrade, A.; Laurance, W.F.; Laurance, S.G.W.; Marimon, B.S.; Marimon , B.-H. Jr.; Célia Guimarães Vieira, I.; Leão Amaral, I.; Brienen, R.; Castellanos, H.; Cárdenas López, D.; Duivenvoorden, J.F.; Mogollón, H.F.; Dionízia de Almeida Matos, F.; Dávila, N.; García-Villacorta, R.. |
| The vast extent of the Amazon Basin has historically restricted the study of its tree communities to the local and regional scales. Here, we provide empirical data on the commonness, rarity, and richness of lowland tree species across the entire Amazon Basin and Guiana Shield (Amazonia), collected in 1170 tree plots in all major forest types. Extrapolations suggest that Amazonia harbors roughly 16,000 tree species, of which just 227 (1.4%) account for half of all trees. Most of these are habitat specialists and only dominant in one or two regions of the basin. We discuss some implications of the finding that a small group of species—less diverse than the North American tree flora—accounts for half of the world’s most diverse tree community. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Hyperdominance; Amazonia; Amazon Basin; Guiana Shield; Trees; Commonness; Rarity; Richness; Tree species. |
| Ano: 2013 |
URL: http://www.repository.naturalis.nl/record/459385 |
| |
|
|
| Liberato,Maria Astrid Rocha; Gonçalves,José Francisco de Carvalho; Chevreuil,Larissa Ramos; Nina Junior,Adamir da Rocha; Fernandes,Andreia Varmes; Santos Junior,Ulysses Moreira dos. |
| The physiological performance of acariquara (Minquartia guianensis) seedlings submitted to water deficit and the recovery of physiological parameters during rehydration were investigated in a greenhouse experiment. The analyzed parameters were: leaf water potential, gas exchange and chlorophyll a fluorescence. After thirty-five days, non-irrigated plants exhibited a leaf water potential 70 % lower compared to control plants (irrigated daily) and the stomatal conductance reached values close to zero, inducing a severe decrease in gas exchange (photosynthesis and transpiration). Six days after the beginning of the rehydration of drought-stressed plants, the results demonstrated that water stress did not irreversibly affect gas exchange and quantum efficiency... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chlorophyll a fluorescence; Photochemical efficiency of PSII; Stress physiology; Tree species; Water deficit. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202006000200008 |
| |
|
| |
|
|
| OLIVEIRA,L.; SILVA JR,A.C.; GONÇALVES,C.G.; PEREIRA,M.R.R.; MARTINS,D.. |
| ABSTRACT: Weeds are one of the main obstacles in the recovery of degraded areas. This research aimed to study the selectivity of herbicides on Trema micrantha (Jamaican nettletree), Schinus molle (Peruvian peppertree), and Apuleia leiocarpa (garapeira) seedlings. An experiment was installed in Junqueirópolis and another in Jaboticabal/SP, Brazil. The experimental design used was completely randomized design with four replications. Treatments consisted of clethodim + fenoxaprop-p-ethyl (50 + 50 g a.i. ha-1), sethoxydim (184 g a.i. ha-1), quizalofop-p-ethyl (75 g a.i. ha-1), nicosulfuron (50 g a.i. ha-1), fluazifop-p-butyl (125 g a.i. ha-1), fomesafen (225 g a.i. ha-1), haloxyfop-methyl (48 g a.i. ha-1), bentazon (720 g a.i. ha-1), chlorimuron-ethyl (15 g... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tree species; Phytointoxication; Schinus mole; Apuleia leiocarpa; Trema micrantha. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100283 |
| |
|
|
| Marco,Rudinei De; Silva,Rodrigo F. da; Ros,Clovis O. Da; Vanzam,Mateus; Boeno,Daniel. |
| ABSTRACT Phytoremediation is a technique that uses plants, whether associated or not to ameliorating agents, for phytostabilization of contaminated soil. The aim of this study was to evaluate the use of Senna multijuga associated with peat in the phytostabilization of copper contaminated soil. The experiment was carried out in a greenhouse for 120 days, using an entirely randomized design in a factorial arrangement (2 x 6), with and without peat (200 mL L-1 soil) and six doses of copper (0, 60, 120, 180, 240, 300 mg kg-1), with six repetitions of each treatment. At 120 days after seedling, the plants were evaluated for height, stem diameter, root and aerial dry matter, contents and accumulated amount of copper in the root system and aerial part. Also, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tree species; Heavy metal; Pau-cigarra; Soil decontamination. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000600421 |
| |
|
|
| Pimentel,Nathalia; Bisognin,Dilson Antônio; Kielse,Paula; Lencina,Kelen Haygert; Mello,Uilian Stefanello. |
| ABSTRACT: This study aimed to evaluate the rooting capability of apical and nodal mini-cuttings of ipe-roxo ( Handroanthus heptaphyllus ) in different substrates. Shoots produced from mini-stumps were fractioned into mini-cuttings 2-cm long apical or nodal mini-cuttings and treated with 1000 mg L-1 of indolebutyric acid (IBA). Four substrate combinations were evaluated: commercial substrate composed of pine bark and vermiculite in proportions of 1:1, 2:1 and 1:2 (v /v) and commercial substrate, vermiculite and sand in the proportion of 1:1:1 (v/v). The factorial experiment utilized a completely random design, with five replicates of four mini-cuttings. Rooting, shooting and survival percentage, number and length of shoots and roots were evaluated at 60 and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Handroanthus heptaphyllus; Tree species; Vegetative propagation and mini - clonal hedge.. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000600996 |
| |
| Registros recuperados: 16 | |
|
|
|
