Fenologia de quatro espécies arbóreas da Caatinga no Semiárido paraibano

Japiassú, André Miguel; Lopes, Kilson Pinheiro; Dantas, Josimar Gomes; Nóbrega, Jackson Silva

doi:10.18378/rvads.v11i4.4509

Cited by 7 publications

(8 citation statements)

References 14 publications

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“…The leaf shedding showed a positive correlation with rainfall, similar to other deciduous Caatinga species (Japiassú et al, 2016), which during drought defoliates (Figure 5C), reduce their metabolic activities and new leaves (Figure 5D). This response plays an important role in resuming photosynthetic production.…”

Section: Discussionsupporting

confidence: 74%

How do meteorological factors alter the phenology of a neotropical tree species?

Costa

Lucas

Silva

et al. 2022

CERNE

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Background: Neotropical species lack autecological information. Among these, are phenological studies, which help to understand forest dynamics and provide important contributions to the collection, restoration, and conservation programs. This research aimed to characterize the vegetative and reproductive phenological behavior of neotropical species Geoffroea spinosa Jacq. in a seasonally dry tropical forest, as well as to verify if there is a correlation between phenophases and environmental parameters. Twenty individuals were accompanied monthly for two years, to detect and tally the presence of floral buds, flowers, immature fruits, ripe fruits, leaf emergence, presence of mature leaves, and defoliation. A semi-quantitative evaluation was carried out with the Fournier method. Results:The results showed that the population had synchrony of reproductive events, with more than 50% of the individuals blooming and fruiting during the same time interval. Furthermore, the circular statistical test indicated a high seasonality for reproductive events (r ≥ 0.50 and p < 0.001). Among the vegetative events, all were classified as non-seasonal (r < 0.5). G. spinosa, showed a significant correlation (p ≤ 0.05) for all meteorological variables evaluated. Conclusion:The reproductive phenophases of G. spinosa showed strongly seasonal behavior, unlike vegetative events. the period between mid-February and the end of March was the most propitious for fruit collection. No seasonality was observed for the vegetative events. The species proved to be sensitive to El niño conditions. Follow-up phenological studies associated with meteorological variables are important for a better understanding of the dynamics of vegetative behavior in response to climate change.

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Section: Discussionsupporting

confidence: 74%

How do meteorological factors alter the phenology of a neotropical tree species?

Costa

Lucas

Silva

et al. 2022

CERNE

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“…The occurrence of phenological events in some species is not determined primarily by rain but by the level of water available to the plants (Borchert & Rivera, 2001). Therefore, during the dry season, when rain is scarce, the species, as a consequence of the end of the reproductive phenophase, express all their production of dry fruits, anemochorics, small seeds, orthodox (Griz & Machado, 2001;Ragusa-Netto & Silva, 2007;Silva, Prata, Mello, & Santos, 2013;Japiassú, Lopes, Dantas, & Nóbrega, 2016).…”

Section: Resultsmentioning

confidence: 99%

<b>Chronological analysis of the physiological quality of diaspores of <i>Myracrodruon urundeuva</i> Fr. All. in semiarid regions

et al. 2018

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The objective of this study was to evaluate the physiological quality of diaspores from Myracrodruon urundeuva mother trees developing in the Cariri region of the state of Paraíba, Brazil. The seeds were collected during three consecutive years and from different areas of the Cariri region. The seed collection areas comprised two sites in the municipality of Boa Vista and one in the municipality of São João do Cariri. The diaspores had their water content determined and were submitted to the following tests: germination, seedling emergence, first count of germination and seedling emergence (within 5 days), and speed of germination and seedling emergence. The treatment means were compared using the deviance statistic. The collection years and collection areas were compared by the Tukey test at a 5% probability level. The comparison between mother trees was made through principal component analysis and cluster analysis. The detected variation in the quality of M. urundeuva diaspores is dependent on environmental conditions. The physiological quality of M. urundeuva diaspores varies according to mother tree, collection area and year. Mother trees of groups 1 and 2 are the most promising since they included representatives of all three areas and produced diaspores of high physiological quality.

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“…Climatic elements can determine or restrict the occurrence of phenological phases (Japiassú et al, 2016). The heat accumulated during the phenological cycle directly controls the phenological phases, interfering in plant development (Forrest and Miller-Rushing, 2010).…”

Section: Fases Fenológicasmentioning

confidence: 99%

Climate and the Myracrodruon urundeuva Allemão seed production

Oliveira

Angelotti

Marques

et al. 2020

Rev. Bras. Geog. Fis.

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The seed physiological quality is related with climate variation during development. Thus, the aim of this study was to determinate the relation among climatic factors and germination of M. urundeuva seeds in different growing seasons and to predict the germination according to the climatic scenarios. Seeds from 14 crop seasons (2005 to 2018) and climatic data from the ‘Bebedouro’ weather station (Embrapa Semiarid) were used to determine the influence of climatic conditions on the vegetative, female and male flowers and the fruiting of M. urundeuva. The simple linear correlation and the multiple linear regression model were applied to determine the influence of climatic elements on the production of M. urundeuva seeds. The multivariate calibration model was developed using the previous selection of variables by the algorithm of successive projections. From the mathematical model, the germination of M. urundeuva seeds was predicted according to climate change, as provided by the IPCC. Seed germination showed a significant difference between harvests. Through the correlation it was observed that the temperature correlated negatively with all phenological phases of M. urundeuva. The quality of M. urundeuva seeds is related to the maximum, average and minimum temperature, average and minimum humidity, and precipitation. These climate variables during the different phenological phases of M. urundeuva affect the physiological quality of the seeds, and, in climate change scenarios, there will be a reduction in the seed production of this species. O clima e a produção de sementes de Myracrodruon urundeuva Allemão RESUMO A qualidade fisiológica das sementes está relacionada às variações climáticas durante o seu desenvolvimento. Assim, o objetivo deste trabalho foi determinar a relação entre os elementos climáticos e a germinação de diferentes safras de sementes de M. urundeuva, bem como prever a germinação frente aos cenários climáticos. Foram utilizadas sementes de 14 safras (2005 a 2018) e os dados climáticos da estação meteorológica de Bebedouro, pertencente a Embrapa Semiárido, para determinar a influência das condições climáticas nas fases vegetativa, flores femininas e masculinas e da frutificação de M. urundeuva. A correlação linear simples e o modelo de regressão linear múltipla foram aplicados para determinar a influência dos elementos climáticos na produção de sementes de M. urundeuva. O modelo de calibração multivariado foi desenvolvido empregando a seleção prévia de variáveis pelo algoritmo das projeções sucessivas. A partir do modelo matemático realizou-se a previsão da germinação de sementes de M. urundeuva frente às mudanças climáticas, previstas pelo IPCC. A germinação das sementes apresentou diferença significativa entre as safras. Por meio da correlação observou-se que a temperatura correlacionou negativamente com todas as fases fenológicas da M. urundeuva. A qualidade das sementes de M. urundeuva está relacionada com a temperatura máxima, média e mínima, umidade média e mínima, e com a precipitação. Essas variáveis de clima durante as diferentes fases fenológicas de M. urundeuva afetam a qualidade fisiológica das sementes, sendo que, em cenários de mudanças climáticas, ocorrerá uma redução na produção de sementes desta espécie.Palavras-chave: aroeira-do-sertão, mudanças climáticas, germinação.

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Fenologia de quatro espécies arbóreas da Caatinga no Semiárido paraibano

Cited by 7 publications

References 14 publications

How do meteorological factors alter the phenology of a neotropical tree species?

How do meteorological factors alter the phenology of a neotropical tree species?

<b>Chronological analysis of the physiological quality of diaspores of <i>Myracrodruon urundeuva</i> Fr. All. in semiarid regions

Climate and the Myracrodruon urundeuva Allemão seed production

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