Indigenous biosystematics of yams (Dioscorea spp.) in Southwest Ethiopia: folk taxonomy, ethnolinguistic analysis, and folk descriptors

Background In Southwest Ethiopia, various plant species are coexisting in wild and cultivated forms. This provides an ideal setting for studying folk biosystematics of neglected species. One of such species is the Dioscorea species, in which we studied to assess the commonly applied folk wisdom of identifying, naming, and classifying yams by Sheko and Bench farmers. Methods This study was conducted in Bench-Maji and Sheka Zones using 272 farmers. Data on the lists of local names and system of folk taxonomy; the inherent logic, etymons, and consistency of names; and the folk descriptors and other criteria involved in taxonomy were collected. Data were collected by establishing participatory research appraisal tools, i.e., informant interviews and researcher direct observation. Results The result suggests that there exists a well-developed folk taxonomic system in Sheko and Bench. This is evident in the recognition of four distinct folk ranks: sub-variety, variety, supra-variety, and folk generic. Taxa assigned to each ranks have distinct features that mark them as members of a separate categories. Farmers over-differentiate 58 individual taxa at the intraspecific levels. Of these, 37 represented varietal taxa while the rest are sub-varietal taxa. Structurally, over 78% of the varieties are labeled with unitary names while all the sub-varieties consisted of binomial names. Farmers used a total of 26 characters and 74 character states for identifying the different taxa. More than 84% of these refer to aspects of plant characteristics. Tuber characters played a key role in the local identification of varietal and sub-varietal taxa while contexts and gender played a key role in the recognition of supra-variety groups. Conclusions This study documented a great wealth of knowledge on indigenous biosystematics of yams, constitutes an essential step towards setting development priorities aimed at in situ conservation. The study clearly demonstrated the value of folk biosystematics for assessing the actual extent and spatial dynamics of yam diversity in traditional farming.

Language and Ethnobotany

This chapter deals with ethnobotany, folk taxonomy, and African languages. In its first part people’s structuring of the plant kingdom with particular reference to life forms, and generic and specific taxa is discussed. Reference is made to relevant folk taxonomic terms and plant names in Bantu languages from East Africa, especially Tanzania, Namibia, to some extent also from the Democratic Republic of Congo and the Central African Republic. It is interesting to note that on top of widespread taxa like TREE or PLANT habitat-related life forms were traced in various languages such as CLIMBER, VINE in Vidunda or BUSH, SHRUB in Kwangali, and THORN TREE in Ndonga, as well as other specific taxa. In this respect sub-life forms were also recorded and examples given. The second part of the chapter focuses on folk conceptualization and the system of Bantu noun classes.

Knowledge of animal appearance among sighted and blind adults

How does first-person sensory experience contribute to knowledge? Contrary to the suppositions of early empiricist philosophers, people who are born blind know about phenomena that cannot be perceived directly, such as color and light. Exactly what is learned and how remains an open question. We compared knowledge of animal appearance across congenitally blind (n = 20) and sighted individuals (two groups, n = 20 and n = 35) using a battery of tasks, including ordering (size and height), sorting (shape, skin texture, and color), odd-one-out (shape), and feature choice (texture). On all tested dimensions apart from color, sighted and blind individuals showed substantial albeit imperfect agreement, suggesting that linguistic communication and visual perception convey partially redundant appearance information. To test the hypothesis that blind individuals learn about appearance primarily by remembering sighted people’s descriptions of what they see (e.g., “elephants are gray”), we measured verbalizability of animal shape, texture, and color in the sighted. Contrary to the learn-from-description hypothesis, blind and sighted groups disagreed most about the appearance dimension that was easiest for sighted people to verbalize: color. Analysis of disagreement patterns across all tasks suggest that blind individuals infer physical features from non-appearance properties of animals such as folk taxonomy and habitat (e.g., bats are textured like mammals but shaped like birds). These findings suggest that in the absence of sensory access, structured appearance knowledge is acquired through inference from ontological kind.

Segmenting Fan Communities

Extending decades of marketing and psychological research, industry and academic circles attempt to label brand community behaviours, borrowing analogies from subcultures such as religion (evangelists), slang (mavens, haters), technology and science fiction (fanboys), and other sciences (alpha, opinion leaders). Although sometimes used as generic terms, upon examination via an integrative literature review, these and other such commonly used fandom and brand community member labels, can define the spectrum of brand fandom in a specific way—through narrative, metaphor and cross-cultural labelling. Such labelling is happening already; this chapter parses out the meaning of one label from another into a proposed folk taxonomy, or classification system developed by those steeped in the culture. This segmentation enables theoretical research into specific fan types and possible opinion leaders, along with industry recommendations for approaching each segment based on the behavioural characteristic inherent in both the historic and common usage of the word.