Comportamento de sementes de Copaifera multijuga durante o armazenamento

Garcia, Lucinda Carneiro; Lima, Divania de

doi:10.1590/1809-43922000303375

Cited by 6 publications

(3 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Aggregate spatial distribution observed in regenerating Copaifera has been also reported by Resende et al [13] and Herrero-Jáuregui et al [8]. The barochory dispersion, predominant for Copaifera [40], and the average rate of germination (80%) [41,49] favor the occupation of the space near Copaifera tree by saplings and seedlings. However, regeneration near the mother tree is most affected by herbivory, competition and predation [50,51], so these processes result in few individuals reaching adulthood.…”

Section: Effects Of Reduced-impact Logging On Spatial Distribution Ofsupporting

confidence: 72%

Short-Term Effects of Reduced-Impact Logging on Copaifera spp. (Fabaceae) Regeneration in Eastern Amazon

Klauberg

Vidal

Silva

et al. 2017

Forests

View full text Add to dashboard Cite

Timber management directly influences the population dynamics of tree species, like Copaifera spp. (copaíba), which provide oil-resin with ecological and economic importance. The aim of this study was to evaluate the structure and population dynamics of Copaifera in unmanaged and managed stands by reduced-impact logging (RIL) in eastern Amazon in Pará state, Brazil. Based on a stem map of the study area, 40 Copaifera trees were randomly selected, where an equal number of trees were selected in managed and unmanaged stands. A transect of 10 × 100 m was centered at each tree (50 m each side) to assess Copaifera regeneration. Transects were subdivided into ten plots, of which six were systematically chosen to assess the height, diameter and number of Copaifera seedlings and saplings. The field assessment occurred in 2011 and 2013. To estimate the amount of sunlight transmitted to the forest floor, we computed canopy cover from airborne LiDAR data. According to the results, the abundance of Copaifera seedlings/saplings was higher in managed than unmanaged stands. About 5% of Copaifera regeneration was found between 45-50 m from the Copaifera tree while~73% of regeneration was concentrated within a 10 m radius of the Copaifera tree. We verified that the diameter distribution of Copaifera regeneration was not a negative exponential distribution, as is typical of most tree species in natural forest. Rather, the Copaifera regeneration had a spatially aggregated distribution. In this short-term analysis, the impact of timber management is not negatively affecting the population structure or dynamics of Copaifera regeneration.

show abstract

Section: Effects Of Reduced-impact Logging On Spatial Distribution Ofsupporting

confidence: 72%

Short-Term Effects of Reduced-Impact Logging on Copaifera spp. (Fabaceae) Regeneration in Eastern Amazon

Klauberg

Vidal

Silva

et al. 2017

Forests

View full text Add to dashboard Cite

show abstract

“…Ela esta incluída no processo ecológico conhecido como mutualismo dispersivo, beneficiando as espécies envolvidas. Neste processo, os animais retiram dos frutos os nutrientes necessários a sua dieta e os vegetais têm seus propágulos dispersos e depositados a diferentes distâncias da planta genitora, reduzindo assim, a competição com outros indivíduos estabelecidos (KUNZ, 1982;FENNER, 1985), de grande importância para a manutenção de florestas e recuperação de áreas que sofreram ação antrópica (GALINDO-GONZALEZ et al, 2000;GARCIA & LIMA, 2000). Devido ao isolamento encontrado entre os remanescentes de matas de galeria, a polinização é o mecanismo mais eficiente para evitar a endocruzamento genético.…”

Section: Conectividade Funcional Nas Escalas De 600 250 E 500 Munclassified

Sustentabilidade Dos Ecossistemas Do Maranhão, Amazônia Maranhense - Volume 2

Araujo

2023

View full text Add to dashboard Cite

“…Diversos estudos já foram realizados sobre a composição e conservação de sementes das espécies C. multijuga (Façanha & Varela, 1986;Garcia & Lima, 2000) e C. langsdorfii (Oliveira & Queiroz, 1995). Os estudos fitoquímicos de sementes, entretanto, são raros.…”

Section: Introductionunclassified

Constituintes das sementes de Copaifera officinalis L.

et al. 2007

View full text Add to dashboard Cite

RESUMOO gênero Copaifera L. é um dos mais importantes economicamente na Região Amazônica devido, principalmente, à produção dos óleos de copaíba, oléo-resinas com diversas propriedades farmacológicas confirmadas. Apesar disso, os estudos fitoquímicos com as sementes das árvores do gênero Copaifera L. são raros. Copaifera officinalis foi a primeira espécie do gênero Copaifera a ser descrita. Este trabalho descreve a composição dos extratos obtidos em hexano e em acetato de etila das sementes de C. officinalis. No extrato obtido em hexano, a análise por cromatografia em fase gasosa utilizando padrões e através de espectrometria de massas permitiu a identificação de: esqualeno, tetradecano, hexadecano, campesterol, estigmasterol e b-sitosterol; os ácidos graxos hexadecanóico, 9-octadecenóico e octadecanóico (majoritários); e decanóico, eicosanóico, docosanóico e tetracosanóico (minoritários). Cumarina foi isolada do extrato em acetato de etila e identificada por técnicas de RMN. PALAVRAS-CHAVECopaifera officinalis L.; cumarina; ácidos graxos. Constituents from Copaifera officinalis L. seeds ABSTRACT Copaifera L. is one of the most economically important plant genera in the Amazon

show abstract

Comportamento de sementes de Copaifera multijuga durante o armazenamento

Cited by 6 publications

References 3 publications

Short-Term Effects of Reduced-Impact Logging on Copaifera spp. (Fabaceae) Regeneration in Eastern Amazon

Short-Term Effects of Reduced-Impact Logging on Copaifera spp. (Fabaceae) Regeneration in Eastern Amazon

Sustentabilidade Dos Ecossistemas Do Maranhão, Amazônia Maranhense - Volume 2

Constituintes das sementes de Copaifera officinalis L.

Contact Info

Product

Resources

About