Elcida L. Araújo
Universidade Federal Rural de Pernambuco
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Publication
Featured researches published by Elcida L. Araújo.
Revista Brasileira De Farmacognosia-brazilian Journal of Pharmacognosy | 2006
Julio Marcelino Monteiro; Ulysses Paulino Albuquerque; Ernani Machado de Freitas Lins Neto; Elcida L. Araújo; Miracy M. Albuquerque; Elba Lúcia Cavalcanti de Amorim
Examinou-se a influencia da sazonalidade climatica sobre as concentracoes de taninos em duas especies da Caatinga: Myracrodruon urundeuva (Engl.) Fr. All. e Anadenanthera colubrina (Vell.) Brenan. Empregou-se o metodo Folin-Ciocalteau para quantificar os fenois totais e o metodo de precipitacao da caseina para taninos. De maneira geral, existe uma forte relacao entre os teores de taninos e a pluviosidade, apesar das especies parecerem adotar diferentes estrategias de producao de compostos tânicos em resposta aos periodos de seca e chuva na caatinga.
Revista Arvore | 2005
Julio Marcelino Monteiro; Ernani Machado de Freitas Lins Neto; Elba Lúcia Cavalcanti de Amorim; Ruth R. Strattmann; Elcida L. Araújo; Ulysses Paulino Albuquerque
A comparative study of tannin concentration in three medicinal plants from caatinga vegetation (Northeast Brazil) was carried out through colorimetric assays. Bark and leaf samples of 10 individuals of each species were extracted with 80% methanol. Tannin was determined by Folin-Ciocalteau analysis for total phenolic materials, followed by precipitation with casein. Additionally, it was tested the hypothesis that the tannin concentration is directly related with the height and diameter of the plants. The results show that the studied species contain an expressive amount of tannins.
Journal of Ethnobiology and Ethnomedicine | 2014
Alejandro Lozano; Elcida L. Araújo; Maria Franco Trindade Medeiros; Ulysses Paulino Albuquerque
BackgroundData from an ethnobotanical study were analyzed to see if they were in agreement with the biochemical basis of the apparency hypothesis based on an analysis of a pharmacopeia in a rural community adjacent to the Araripe National Forest (Floresta Nacional do Araripe - FLONA) in northeastern Brazil. The apparency hypothesis considers two groups of plants, apparent and non-apparent, that are characterized by conspicuity for herbivores (humans) and their chemical defenses.MethodsThis study involved 153 interviewees and used semi-structured interviews. The plants were grouped by habit and lignification to evaluate the behavior of these categories in terms of ethnospecies richness, use value and practical and commercial importance. Information about sites for collecting medicinal plants was also obtained. The salience of the ethnospecies was calculated. G-tests were used to test for differences in ethnospecies richness among collection sites and the Kruskal-Wallis test to identify differences in the use values of plants depending on habit and lignifications (e.g. plants were classes as woody or non-woody, the first group comprising trees, shrubs, and lignified climbers (vines) and the latter group comprising herbs and non-lignified climbers). Spearman’s correlation test was performed to relate salience to use value and these two factors with the commercial value of the plants.ResultsA total of 222 medicinal plants were cited. Herbaceous and woody plants exhibited the highest ethnospecies richness, the non-woody and herbaceous plants had the most practical value (current use), and anthropogenic areas were the main sources of woody and non-woody medicinal plants; herbs and trees were equally versatile in treating diseases and did not differ with regard to use value. Trees were highlighted as the most commercially important growth habit.ConclusionsFrom the perspective of its biochemical fundamentals, the apparency hypothesis does not have predictive potential to explain the use value and commercial value of medicinal plants. In other hand, the herbaceous habit showed the highest ethnospecies richness in the community pharmacopeia, which is an expected prediction, corroborating the apparency hypothesis.
Anais Da Academia Brasileira De Ciencias | 2011
Giulliari Alan da Silva Tavares de Lira; Elcida L. Araújo; Maria do Carmo Bittencourt-Oliveira; Ariadne do Nascimento Moura
The present study reports the phytoplankton abundance, dominance and co-existence relationships in the eutrophic Carpina reservoir, Pernambuco, Brazil. Sampling was carried out at six different depths bimonthly at a single reservoir spanning two climatic periods: dry season (January, September, and November 2006) and rainy season (March, May, and July 2006). Density, abundance, dominance, specific diversity and equitability of the community were determined, along with chlorophyll a, and physical and chemical variables of the environment. Eight species were considered abundant, and their densities corresponded to more than 90% of the total phytoplankton community quantified. Cyanobacteria represented more than 80% of this density. Cylindrospermopsis raciborskii was the only dominant taxon in the dry season, and was co-dominant in the rainy season. C. raciborskii, Planktothrix agardhii and Geitlerinema amphibium had the greatest densities and lowest vertical variation coefficients. The statistical analysis indicated relationships with vertical and seasonal variations in the phytoplankton community and the following variables: total dissolved solids, water temperature, electrical conductivity and pH. The changes in the environmental variables were discrete and regulated by the establishment of precipitation however, they were able to promote vertical and seasonal instability in the structure of the phytoplankton community.
Anais Da Academia Brasileira De Ciencias | 2013
Reinaldo Farias Paiva de Lucena; Camilla Marques de Lucena; Elcida L. Araújo; Ângelo Giuseppe Chaves Alves; Ulysses Paulino Albuquerque
This study analyzes three methods of data analysis to verify which one would be more appropriate to get information aiming the conservation, selecting the use value (VU) inventory in situ and conservation property index (IPC). It was developed in in Northeast Brazil, via interviewed householders (46 informants). The VU was calculated considering only the effective use of plants; the inventory in situ was made through the frequency of species occurrence in homes; and the IPC combining ethnobotanical and phytossociological data. It was observed a similar cast of the indicated species by VU and inventory in situ, being different from the IPC cast. As this study sought to analyze the best technique for species identification which were needing conservationist actions, and obtained different results among the chosen methods. It has been suggested the use of methods that unite in their analysis both ethnobotanical and ecological aspects, like in the plants list from the priority index of conservation, which demonstrated to be more efficient to identify rare species in the local vegetation. The VU and the inventory in situ are more efficient to identify the most known and used species in the communities, however without analyzing these plants in the local vegetation.
Plant and Soil | 2015
Ana Dolores Santiago de Freitas; Everardo Valadares de Sá Barretto Sampaio; Andresa Priscila de Souza Ramos; Maria Regina de Vasconcellos Barbosa; Rosângela Pereira Lyra; Elcida L. Araújo
Background and aimsThe interpretation of ecosystem nitrogen isotopic patterns is subject to controversies since there are few surveys of signals along climate gradients within the same region. We determined the effects of a rainfall gradient, under high temperatures, on the soil and plant δ15N signals in Northeast Brazil.MethodsNitrogen, carbon and δ15N signals were determined from coastal perennial to subhumid and semiarid deciduous forests to savanna – deciduous forest transition.ResultsSoil C and N concentrations were linearly related and both related quadratically with mean annual rainfall while δ15N concentrations decreased with higher rainfall (16 to 4‰). Plant δ15N was 1–3‰ lower than soil δ15N (Δδ15N) in all areas. Only in the deciduous forests, leaves of target species had significantly lower 15 N signals than those of non-fixing species, allowing estimation of fixation.ConclusionsIn the perennial forests the low signals indicated that the 15 N natural abundance method was not suitable to estimate fixation, while in the savanna – deciduous forest transition, high signals indicated that the legume species were not fixing. The smaller Δδ15N than those reported in cooler areas and the absence of rainfall effect indicates that, when high, temperature overrides the rainfall effect.
Environmental Management | 2015
Maria Clara Bezerra Tenório Cavalcanti; Marcelo Alves Ramos; Elcida L. Araújo; Ulysses Paulino Albuquerque
Little is known about what possible effects on wood resources might be caused by non-timber forest products (NTFPs). Here, we assessed the patterns of fuelwood consumption related to an NTFP (Caryocar coriaceum) oil extraction and how this non-domestic activity can indirectly increase the use pressure on fuelwood species in a protected area, semiarid of Brazil. We conducted semi-structured interviews, in situ inventories, phytosociological surveys, and analyses of wood quality to identify the set of woody plants used in oil production. Householders use large volumes of dry wood and a set of woody species, which are highly exploited. Additionally, many preferred species have low fuel potential and suffer much use pressure. The best fuelwood species are underused, what requires management strategies to improve their potential as a source of energy. As a result, we suggest some conservation and management actions of fuelwood resources related to the use of NTFPs.
Economic Botany | 2015
Juliana Loureiro Almeida Campos; Temóteo Luiz Lima da Silva; Ulysses Paulino Albuquerque; Nivaldo Peroni; Elcida L. Araújo
Knowledge, Use, and Management of the Babassu Palm ( Attalea speciosa Mart. ex Spreng) in the Araripe Region (Northeastern Brazil)Considerable diversity has been observed in the uses of the palm species Attalea speciosa Mart. ex Spreng, including its use in human and animal food, handicrafts, construction, medicine, cosmetics, religious items, and commercial purposes. This study assesses the relationships among the knowledge, use, and socioeconomic characteristics of extractivists who utilize this species in two rural communities (Macaúba and Saco smallholdings) located in the Araripe region of northeastern Brazil. Semistructured interviews were conducted with the palm extractivists identified through snowball sampling. In Macaúba, 50 uses for A. speciosa were identified, whereas in Saco, 41 uses were identified. These uses were grouped into eight different categories, the most prominent of which were handicrafts, construction, and human food. The monthly income of extractivists at Macaúba was significantly and directly related to the number of known uses. A significant and inverse relationship was found between the age of the Macaúba extractivists and number of known uses in the community, demonstrating that there is a trend toward increased knowledge of the palm among the younger members of this community. In the Saco community, there was no significant correlation observed between the extractivists age, monthly family income, or commercial income from babassu and the number of known uses. Neither was a significant relationship observed between knowledge and current practices regarding A. speciosa in either of the two communities studied. Babassu palm is considered a resource of high commercial importance by the residents of these communities, and its use as a subsistence resource was uncommon. However, access to technology may replace some of the traditional uses of babassu and influence the type of use practiced in the community.Conhecimento, uso e manejo da palmeira babaçu ( Attalea speciosa Mart. ex Spreng) no Nordeste do BrasilUma diversidade considerável de usos tem sido registrada para a palmeira Attalea speciosa Mart. ex Spreng, como na alimentação humana e de animais, na fabricação de artesanatos, construção, usos medicinais, cosméticos e religiosos. Objetivou-se verificar as relações entre conhecimento, uso e características socioeconômicas dos extrativistas dessa espécie em duas comunidades rurais localizadas na região do Araripe, Nordeste do Brasil: Sítio Macaúba e Sítio Saco. Foram realizadas entrevistas semiestruturadas com todos os extrativistas da palmeira identificados por meio da técnica de amostragem “bola de neve.” No Sítio Macaúba foram identificados 50 usos para A. speciosa, e no Sítio Saco identificamos 41 usos, distribuídos em oito categorias de uso. Aquelas que receberam mais destaque foram as categorias artesanato, construção e alimentação humana. As folhas e os frutos foram as partes úteis mais citadas pelos informantes, evidenciando uso mais intenso dessas estruturas. A renda mensal familiar dos extrativistas do Sítio Macaúba teve influência significativa e diretamente relacionada sobre o número de usos conhecidos, sugerindo que os informantes exploram o babaçu para complemento de renda mensal e não como única fonte para subsistência. No entanto, foi verificada relação significativa e inversamente relacionada entre a idade dos extrativistas dessa mesma comunidade e o número de usos conhecidos, sugerindo que há uma tendência de predomínio do conhecimento sobre a palmeira entre os mais jovens dessa comunidade. No Sítio Saco não houve correlação significativa entre idade, renda mensal familiar e renda da comercialização do babaçu com o número de usos conhecidos, sugerindo que outros fatores devem estar influenciando esse conhecimento. Não houve relação significativa entre o conhecimento e as práticas atuais de A. speciosa em nenhuma das duas comunidades estudadas. Foi possível verificar que a palmeira babaçu é considerada um recurso de elevada importância comercial para os moradores das comunidades estudadas, sendo os usos relacionados à subsistência, pouco frequentes. O acesso à tecnologias pode substituir alguns dos usos tradicionais do babaçu, além de induzir uma seleção no tipo de uso que é praticado na comunidade.
Journal of Ethnobiology and Ethnomedicine | 2015
Sofia Zank; Nivaldo Peroni; Elcida L. Araújo; Natalia Hanazaki
BackgroundThe concept of eco-cultural health considers the dynamic interaction between humans and ecosystems, emphasizing the implications of the health of the ecosystem for the health and well-being of human populations. Ethnobotanical studies focusing on folk medicine and medicinal plants can contribute to the field of eco-cultural health if they incorporate the perspective and local knowledge of communities. We investigated the local health practices in three rural communities living within the vicinity of a protected area of sustainable use in a semi-arid region of Brazil. We analyzed the opinions of local health experts on the elements that influence human health and on how the environment contributes to this influence. We also analyzed and compared the local knowledge of medicinal plants, as knowledge of this type is an important factor when considering the interaction between environmental and human health.MethodsWe performed structured interviews and free-listings with 66 local health experts. We used content analysis to systematize the elements of the influences on human health. We compared the richness of the plants cited among communities and analyzed the differences among the three communities regarding the ways in which the plants were obtained and the environments in which plants were collected.ResultsThe local experts identified several influences of the environment on human health. These influences can be associated with ecosystem services, such as climatic conditions, water and air quality, recreation and medicinal and food resources. We identified 192 medicinal plant species, most of which were gathered from wild ecosystems. The most important environments for the three communities were the plateau mountain and backyards.ConclusionsThe informants had a broad and integrated view of health, perceiving the importance of conserving the environment within the National Forest of Araripe for the health and well-being of the local populations.ResumoFundamentaçãoO conceito de saúde eco-cultural considera a interação dinâmica entre os seres humanos e ecossistemas, com ênfase nas implicações da saúde do ecossistema na saúde e bem-estar das populações humanas. Os estudos etnobotânicos sobre medicina popular e plantas medicinais podem contribuir para o campo da saúde eco-cultural, ao inserir a perspectiva e conhecimento local das comunidades. Nós investigamos o processo de saúde em três comunidades rurais que vivem nas proximidades de uma área protegida de uso sustentável em uma região semi-árida do Brasil. Foram analisadas as opiniões dos especialistas locais de saúde sobre elementos que influenciam a saúde humana, e como o ambiente contribui para isso. Foi também analisado e comparado o conhecimento local das plantas medicinais nas três comunidades, um fator importante quando se considera a influência do ambiente na saúde humana.MétodosRealizamos entrevistas estruturadas e listagem-livre com 66 especialistas locais de saúde. Utilizamos análise de conteúdo para sistematizar os elementos de influência sobre a saúde humana, comparamos a riqueza das plantas citadas entre as comunidades, e analisamos as diferenças entre as comunidades nas formas de obtenção e nos ambientes de coleta das plantas.ResultadosOs especialistas locais perceberam diversas influências do ambiente na saúde humana relacionadas aos serviços ecossistêmicos, como condições climáticas, qualidade da água e do ar, recreação, recursos medicinais e alimentícios. Foram identificadas 192 espécies de plantas medicinais, sendo que a maioria é extraída de ecossistemas naturais. Os ambientes mais importantes nas três comunidades foram a serra e os terrenos/quintais.ConclusãoConcluímos que os informantes possuem uma visão ampla e integrada do processo de saúde, percebendo a importância dos ambientes conservados pela Floresta Nacional do Araripe para a saúde e bem estar das populações humanas.
Applied Vegetation Science | 2017
Tassiane Novacosque Feitosa Guerra; Elcida L. Araújo; Everardo Valadares de Sá Barretto Sampaio; Elba Maria Nogueira Ferraz
Questions Which types of land use adjacent to Atlantic Tropical Forests induce the strongest edge effects in terms of the functional responses of arboreal and understorey plants? Which functional traits respond to stress imposed by each land-use type in the two forest layers? Location Full-protection conservation areas in the metropolitan region of Recife, Pernambuco State, Brazil. Methods We calculated the proportions of species and individuals of woody plants in terms of their functional traits (seed size, maximum height, dispersal syndrome and regeneration strategy) along the edge and in the interior of tropical Atlantic Forest remnants exposed to different degrees of adjacent urbanization along their borders (urban, suburban and rural) by establishing 120 sampling points (60 plots considering the arboreal components and 60 subplots considering woody understorey plants).The degree of urbanization adjacent to the edges of the remnant forests were determined by mapping the sites based on satellite images. The intensities of the edge effects on functional composition, and the differences in the functional traits were assessed using multivariate analysis. Results Functional composition along the edges and within the forest interiors of remnants with the highest densities of urban areas around them demonstrated the greatest variability of both the arboreal and understorey components. The arboreal component of the forest sites adjacent to rural areas (intense agricultural activities) tended to demonstrate intermediate intensity edge effects. Species showing shade intolerance, with smaller maximum heights, producing small seeds and with abiotic dispersion were present in high proportions in forests bordering heavily urbanized areas. Biotic dispersal predominated in the arboreal component of the rural remnant. Conclusions From a functional point of view, the forest with the most highly urbanized border is more impacted by edge effects than forests bordering on suburban or rural areas. Nonetheless, in an urban–rural gradient, intense agricultural activity was observed to create intermediate pressure in terms of the intensities of its edge effects. These edge effects differentially impact the functional traits of the arboreal and understorey components, influencing different traits, depending on the type of border.
Collaboration
Dive into the Elcida L. Araújo's collaboration.
Everardo Valadares de Sá Barretto Sampaio
Federal University of Pernambuco
View shared research outputsErnani Machado de Freitas Lins Neto
Universidade Federal Rural de Pernambuco
View shared research outputsLetícia Zenóbia de Oliveira Campos
Universidade Federal Rural de Pernambuco
View shared research outputsAndré Luiz Borba do Nascimento
Universidade Federal Rural de Pernambuco
View shared research outputsEliza Rosário Gomes Marinho de Albuquerque
Universidade Federal Rural de Pernambuco
View shared research outputs