Techniques for Analysis of Quantitative Ethnobiological Data: Use of Indices

Silva, Valdeline Atanázio da; Nascimento, Viviany Teixeira do; Soldati, Gustavo Taboada; Medeiros, María Franco Trindade; Albuquerque, Ulysses Paulino

doi:10.1007/978-1-4614-8636-7_24

Cited by 20 publications

(24 citation statements)

References 27 publications

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“…The importance value (IV), which measures the proportion of informants who cited a species as the most important, was obtained by the formula:IV = ns/nwhere ns = number of informants that considered species "s" the most important and n = total number of informants (see Silva et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Richness and ethnobotany of the family Euphorbiaceae in a tropical semiarid landscape of Northeastern Brazil

Crepaldi¹,

Campos²,

Albuquerque³

et al. 2016

South African Journal of Botany

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a b s t r a c t Edited by J FloresKeywords: Ethnobiology Plant diversity Local botanical knowledge Euphorbiaceae stands out among angiosperms in its species richness and in the number of reported uses from ethnobotanical surveys in Brazil and other tropical countries. In Brazilian semiarid regions, species of Euphorbiaceae are among the most frequently used by rural communities, especially for medicinal purposes. The present study investigated the presence of species of Euphorbiaceae and their use by a rural population from the Araripe National Forest region, a protected area located in the Chapada do Araripe (NE Brazil). This area is considered to be of primary importance for conservation, and it is lacking in scientific research. The survey of the richness of Euphorbiaceae occurred through opportunistic plant collections and phytosociological studies between August 2011 and June 2012. We performed 153 interviews with informants who were selected based on general nonprobabilistic household sampling and administered semi-structured interviews using a checklist interview that considered all the species of the family Euphorbiaceae registered in collections. We found 23 species of Euphorbiaceae, with the genus Croton (5 species) being highlighted. This study adds new occurrences of Euphorbiaceae to the region compared with the results found in previous surveys; 50% of the collected Euphorbiaceae species were considered useful, with Manihot esculenta (cassava) considered of the highest importance, with a higher utilization rate in the community ponds. The study also indicated the use of castor bean (Ricinus communis), Croton heliotropiifolius, and Jatropha gossypiifolia. The category of use that was most cited was medicinal, and most of the useful species were obtained by informants in anthropogenic areas. The richness of Euphorbiaceae in the region was representative; however, further studies should be conducted in the study area. The dynamics of Euphorbiaceae use in the studied rural population did not appear to pose a threat to native species within the conservation area.

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Section: Discussionmentioning

confidence: 99%

Richness and ethnobotany of the family Euphorbiaceae in a tropical semiarid landscape of Northeastern Brazil

Crepaldi¹,

Campos²,

Albuquerque³

et al. 2016

South African Journal of Botany

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“…The use of techniques that quantify knowledge, such as diversity indices, evenness of the informant [ 15 , 16 ], and the use value [ 17 – 19 ], are selected for their practicality, speed, and ease of use, and fit in the concept of techniques called “consensus of informants” [ 20 , 21 ]. However, they are unable to estimate the effective use of plant species [ 21 – 23 ]. Gaugris and Van Rooyen [ 22 ] have ratified the above information in a study on the use of wood in home construction in Maputaland, South Africa.…”

Section: Introductionmentioning

confidence: 99%

Knowledge and extractivism of Stryphnodendron rotundifoliumMart. in a local community of the Brazilian Savanna, Northeastern Brazil

Feitosa

Albuquerque

Monteiro

2014

J Ethnobiology Ethnomedicine

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BackgroundThis study aims to understand how the stem bark of Stryphnodendron rotundifolium Mart. is used by a rural community in the savanna of Northeastern Brazil, associated with a preliminary assessment involving plant population structure and extractivism in the main sites of collection.MethodsA population structure study and analysis of bark extractivism was conducted in two sites: one within the forest and another at its edge. We had the intention of testing whether there are differences between these sites; since the local extractive practice is prohibited, expecting more intense extraction in the forest interior than its edge by the local fiscalization. We interviewed 120 informants who reported knowing and using the species, and also the places of extractivism. We also calculated quantitative measures of local knowledge, and the influence of gender and age on the knowledge about this species.ResultsKnowledge of the uses was evenly distributed between men and women. A total of 28 specimens were recorded at Site 1, whereas 23 were identified at Site 2, with the specimens at both sites distributed in 4-diameter classes with 4-cm intervals. Nine of the specimens found in Site 1 (32.14%) showed some sign of extraction. No specimen from Site 2 showed signs of extraction. In Site 1, the total area of stem bark removed was 43,468 cm2, and the total area of stem bark available was 33,200 cm2. In Site 2, only the available stem-bark area of 44,666 cm2 was identified because no specimens were harvested. There is no difference in knowledge of this species regarding the gender and age.ConclusionsStryphnodendron rotundifolium is a key resource for the studied community. A large proportion of bark collected from the first diameter size class may affect the growth of these individuals and may influence the recruitment process. Perhaps, this effect may explain the absence of individuals in some size classes.

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“…To document the importance of A. speciosa for local extractivists, indices were used to analyze the relative importance of a plant for a particular culture (Silva et al 2014). The indices included the plant part value (PPV) index, which measures the degree of consistency among informants with regard to the parts used.…”

Section: Discussionmentioning

confidence: 99%

“…We also used the use-diversity value (UDV) index, which measures the importance of the use categories and how they contribute to the local use value. It is obtained from the number of recorded indications for a category divided by the total number of indications for all categories (see Monteiro et al 2006;Silva et al 2014). For this analysis, the uses cited by the respondents from the two communities were grouped into the following eight use categories: human food, animal feed, handicraft, fuel, construction, cosmetic, medicinal, and other.…”

Section: Discussionmentioning

confidence: 99%

Knowledge, Use, and Management of the Babassu Palm (Attalea speciosa Mart. ex Spreng) in the Araripe Region (Northeastern Brazil)

et al. 2015

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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 extractivist's 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. Uma 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 S í t i o S a c o . F o r a m r e a l i z a d a s entrevistas semiestruturadas com 1 , Bronx, NY 10458-5126 U.S.A.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 baba...

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Techniques for Analysis of Quantitative Ethnobiological Data: Use of Indices

Cited by 20 publications

References 27 publications

Richness and ethnobotany of the family Euphorbiaceae in a tropical semiarid landscape of Northeastern Brazil

Richness and ethnobotany of the family Euphorbiaceae in a tropical semiarid landscape of Northeastern Brazil

Knowledge and extractivism of Stryphnodendron rotundifoliumMart. in a local community of the Brazilian Savanna, Northeastern Brazil

Knowledge, Use, and Management of the Babassu Palm (Attalea speciosa Mart. ex Spreng) in the Araripe Region (Northeastern Brazil)

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