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| Registros recuperados: 166 | |
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| Liuth,Heitor Scarpati; Talora,Daniela Custódio; Amorim,André Márcio. |
| In tropical forests with low seasonality, climatic variables generally exert a weak influence on the phenology of species. The seasonality of phenophases in closely related taxa can be controlled by phylogenetic constraints in such environments. In this study, our aim was to describe the phenology of Rubiaceae in the understory of the Atlantic Forest in the southern part of Bahia, Brazil, as well as to evaluate the seasonality and phenological synchrony of this family. For two years, we observed 90 individuals belonging to 13 species, in an area of 0.2 ha. Leaf flushing and leaf fall did not demonstrate any seasonality, were continuous for most species and correlated with few of the climatic variables. Flowering was seasonal and correlated positively with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leaf flushing; Phenology; Flowering; Fruiting; Psychotria. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100019 |
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| Bueno,Norma Catarina; Bicudo,Carlos Eduardo de Mattos. |
| Temporal and spatial variation of Nitella furcata (Roxburgh ex Bruzelius) C. Agardh emend. R.D. Wood subsp. mucronata (A. Braun) R.D. Wood var. mucronata f. oligospira (A. Braun) R.D. Wood were studied at the Ninféias pond (23°38'18.9"S, 46°37'16.3"W), a tropical, shallow, mesotrophic reservoir located in the Parque Estadual das Fontes do Ipiranga Biological Reserve, Municipality of São Paulo, southeast Brazil. Water samples were collected monthly from October/1996 to October/1997 for turbidity, electric conductivity, pH, alkalinity, dissolved oxygen, nutrients, biomass, and algal phenology analysis. Spatial distribution pattern of algal biomass showed that all four sampling stations were similar among themselves during the whole study period. Regarding... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Charophyceae; Biomass; Phenology; Aquatic macrophyte; Nitella. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062006000100001 |
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| Espírito-Santo,Mário M; Fernandes,G. Wilson; Allain,Luciana R; Reis,Ticiana R. F. |
| Several ecological, genetic, and environmental factors are known to influence tannin concentration in plant tissues. In this study, the effects of seasonality, water availability, and sex of the plant on tannin concentration in the dioecious shrub Baccharis dracunculifolia were assessed. The effects of water availability on plant shoot growth and its relationship to tannin concentration were also experimentally evaluated. Tannins occurred in B. dracunculifolia from November to May, peaking during the summer (December to March). However, no relationship between tannin concentration, rainfall and temperature was found. No difference in tannin concentration and shoot growth was found between plants in the irrigated and control treatments, this suggesting that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tannins; Baccharis dracunculifolia; Irrigation; Gender; Phenology. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33061999000200006 |
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| Menezes,Isiara Silva; Couto-Santos,Ana Paula Lima do; Funch,Ligia Silveira. |
| ABSTRACT We compared the reproductive phenology and floral visitors of Eschweilera tetrapetala growing along the edge and in the interior of a submontane forest in the Chapada Diamantina mountains, Bahia State, Brazil. We sought to determine if there were inter-annual differences in intensity and seasonality associated with environmental conditions, and if there were differences in floral visitors between the two environmental contexts. Phenological observations were performed for three years, and included the occurrence of an El Niño event. We applied circular statistics to detect seasonal trends, performed cross correlations between phenophases and climate, Kruskal-Wallis and Wilcoxon signed-rank tests for inter-annual variation, and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: El Niño; Eschweilera tetrapetala; Floral visitors; Linear edge effects; Phenology; Precipitation; Seasonality. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000100001 |
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| Gomes Junior, Francisco Guilhien; ESALQ - USP; Sá, Marco Eustáquio de; UNESP; Muraishi, Cid Tacaoca; UNESP. |
| A aplicação de N em cobertura é indispensável para a obtenção de altas produtividades do feijoeiro e estudos de respostas ao fertilizante em condições de semeadura direta e preparo convencional do solo ainda consistem numa necessidade fundamental. Assim, a pesquisa teve como objetivo avaliar o efeito da aplicação de N e a produtividade do feijoeiro em sistema de semeadura direta e de preparo convencional do solo. O delineamento experimental foi o de blocos casualizados em esquema fatorial (2x8+1) com quatro repetições. Os tratamentos constituíram-se da combinação das doses de 40 e 80 kg ha-1 de N aplicadas em oito épocas do estádio V4 do desenvolvimento vegetativo (V4-3, V4-4, V4-5, V4-6, V4-7, V4-8, V4-9 e V4-10), além da testemunha sem N em cobertura. O... |
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Palavras-chave: 5.01.03.05-9 Melhoramento Vegetal Phaseolus vulgaris L.; Cobertura morta; Adubo nitrogenado; Fenologia Phaseolus vulgaris L.; Mulching; Nitrogen fertilizer; Phenology. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5967 |
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| Pio, Rafael; Universidade Federal de Lavras; Campagnolo, Marcelo Angelo; Universidade Estadual do Oeste do Paraná. |
| Because grain cultivation in Paraná is becoming unsustainable on small farms, growing fruit should be explored on these production units. Thus, the objective of the present work was to quantify the phenology and production of cultivars of black and redberry plants in the western region of Paraná in the town of Marechal Cândido Rondon, Paraná State, Brazil. The experimental design was in randomized blocks, with four blocks and eleven treatments (blackberry cultivars Arapaho, Xavante, Ébano, Comanche, Caingangue, Choctaw, Tupy, Guarani, Brazos and Cherokee and the redberry plants). In each plot, composed of five plants, the phenological and production data for the 2009/10 and 2010/11 production cycles were collected, and the physicochemical quantification of... |
| Tipo: Pesquisa Empírica de Campo |
Palavras-chave: 5.01.03.00-8 Rubus spp.; Rubus rosifolius; Phenology; Fruit quality Fitotecnia Rubus spp.; Rubus rosifolius; Phenology; Fruit quality. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15528 |
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| Gomes Junior, Francisco Guilhien; ESALQ/USP; Sá, Marcos Eustáquio de; FAE/UNESP; Valério Filho, Walter Veriano; FAE/UNESP. |
| O adequado suprimento de N é primordial para se obter alta produtividade de sementes de feijão, entretanto, as respostas a esse nutriente, em sistema de plantio direto, podem variar em função da espécie e quantidade de palha. O objetivo do trabalho foi avaliar a resposta do feijoeiro à aplicação de N, em sistema de plantio direto, sobre palhada de milho, milheto e braquiária. Foram realizados três experimentos, um para cada espécie de gramínea. O delineamento experimental foi o de blocos casualizados disposto em esquema fatorial 5x2x2, correspondente a cinco doses de N (0, 30, 60, 90, 120 kg ha-1) aplicadas em duas épocas da fase vegetativa (3ª e 6ª folha trifoliolada) e duas cultivares (IPR Juriti e Pérola), com quatro repetições. A cultivar IPR Juriti... |
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Palavras-chave: 5.01.00.00-9 Agronomia Phaseolus vulgaris L.; Palhada adubação nitrogenada; Fenologia; Rendimento de sementes 5.01.03.00-8 Fitotecnia Phaseolus vulgaris L.; Mulching; Nitrogen fertilizer; Phenology; Seed yield. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3549 |
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| Oliveira, Raquel Dias; Silva, Carla Michelle; Mielezrski, Fábio; Lima, José Sidnei Bezerra; Edvan, Ricardo Loiola. |
| This study aimed to characterize the harvest phenological stages of soybean cultivars intended for silage. Cultivars were evaluated for dry weight of the composite sample, branches, leaves and pods; wet mass of branches, leaves, pods and ground natural matter. This experiment was a 3 x 2 factorial randomized block design, with four replications each, where the first factor corresponds to the harvest stage: R4, R5 and R6; and the second factor refers to two soybean maturity groups (8.0 and 8.1). A significant interaction was detected only for ground natural matter. Higher values of most traits evaluated were observed for the R6 harvest phenological stage. The cultivar with maturity group 8.0 showed higher values for ground natural matter. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phenology; Forage; Glycine max (L.) Merril. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/31837 |
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| Toledo, Vagner de Alencar Arnaut de; UEM; Oliveira, Arildo José Braz de; UEM; Ruvolo-Takasusuki, Maria Claudia Colla; UEM; Mitsui, Marina Hitumi; UEM; Vieira, Renata Eunice; UEM; Kotaka, Carolina Satie; UEM; Chiari, Wainer César; UEM; Gobbi Filho, Lucílio; UEM; Terada, Yoko; UEM. |
| Siratro (Macroptilium atropurpureum Urb.) is a forager with high nutritional values and excellent palatability, and its phenology is almost unknown. Aiming at improving the knowledge and understanding siratro pollinators and floral biology, the total sugar contents on its flowers nectar and the identification of these sugars were determined by, respectively, spectrophotometry and chromatography. The total sugar concentration varied from a maximum of 1.36 and 3.23 mg/flower and a minimum of 0.19 and 0.42 mg/flower. Results showed that the total sugar concentration is high at 8:30 a.m., when the flowers open, and varies slightly during the time the flowers keep open. The variations can be related to the number of insects that visit the flowers, especially... |
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Palavras-chave: 5.04.03.00-1 Nutrição e Alimentação Animal Macroptilium atropurpureum; Fabaceae; Siratro; Phenology; Spectrophotometric analysis; Nectar 5.04.03.00-1 Nutrição e Alimentação Animal. |
| Ano: 2005 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/1248 |
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| Machado, Nadja Gomes; Sanches, Luciana; Aquino, Aryadne Márcia; Silva, Ludymilla Barboza da; Novais, Jonathan Willian Zangeski; Biudes, Marcelo Sacardi. |
| The Pantanal is the largest wetland in the world, characterized by high biodiversity, but large areas have been invaded by Vochysia divergens, a flood-adapted pioneer and native tree of the riparian forest and Brazilian Savanna. Seasonality in rainfall causes annual rhythms in the tree’s physiology, in which climatic stress factors induce a cambial dormancy in trees and, in consequence, growth zones in the trunk. Current analysis evaluates the seasonal variation of the diameter increase of V. divergens specimens in a seasonal floodable forest of the Northern Brazilian Pantanal. Field sampling was conducted between January and December 2012. Air temperature, relative humidity and precipitation were measured at a micrometeorological station, water level was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciências Biológicas; Ecologia diametric increment; Dendrometric bands; Climate-growth relation; Phenology; Cambará Botânica. |
| Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/24330 |
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| Moura, Flávia de Barros Prado; UFAL; Duarte, Juliana Maria Moreira; UFS; Lemos, Rosângela Pereira de Lyra; Herbário MAC-IMA. |
| Floristic composition and dispersal syndromes were determined along one year in an open ombrophilous forest fragment in the Municipal Park of Maceió, Alagoas State, Brazil. A total of 178 species belonging to 61 families were examined. Fabaceae was the most species-rich family, with 24 species. Among sampled species, 123 had their syndromes of diaspore dispersal determined, and most of them (69%) were zoochoric. Anemochoric and autochoric plants represent 11 and 20% from the total, respectively. The data about reproductive phases indicate coincident peaks of flowering and fruiting in August, at the end of the rainy season. The results are in accordance to those expected for ombrophilous forest with poorly defined seasonality. |
| Tipo: Fenologia |
Palavras-chave: 2.00.00.00-6 Atlantic forest; Ombrophilous forest; Phenology 2.03.00.00-0 Atlantic forest; Ombrophilous forest; Phenology. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/7142 |
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| Souza,Marcelo C. de; Bueno,Paula C.P.; Morellato,Leonor P.C.; Habermann,Gustavo. |
| The cerrado's flora comprises aluminum-(Al) accumulating and non-accumulating plants, which coexist on acidic and Al-rich soils with low fertility. Despite their existence, the ecological importance or biological strategies of these functional groups have been little explored. We evaluated the leaf flushing patterns of both groups throughout a year; leaf concentrations of N, P, K, Ca, Mg, S, Al, total flavonoids and polyphenols; as well as the specific leaf area (SLA) on young and mature leaves within and between the groups. In Al-accumulating plants, leaf flushed throughout the year, mainly in May and September; for non-accumulating plants, leaf flushing peaked at the dry-wet seasons transition. However, these behaviors could not be associated with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aluminum; Community; Herbivory; Mineral nutrition; Phenology; Specific leaf area. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200813 |
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| Registros recuperados: 166 | |
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