Socioecological features of plant diversity in domestic gardens in the city of Bogotá, Colombia
2017
Sierra-Guerrero, María C. | Amarillo-Suárez, Angela R.
Domestic gardens contribute substantially to green spaces in cities, where urbanization removes and fragments natural landscapes, causing the loss of biodiversity and the homogenization of biota. We analyzed the diversity and composition of the flora of 70 domestic gardens in seven localities in Bogotá, Colombia, which represent different periods of expansion of the city. Floristic composition and diversity were related to the origin and use of plants, the urbanization history, and the income of owners. We recorded 4110 individuals belonging to 238 species. The mean species richness per garden was 15.4, with older localities having significantly higher species richness. The similarity among the localities, which evaluated the distinctness of assemblages, ranged from 0.42 to 0.50. Plants from the Neotropical region and exotic plants were the most abundant in all gardens. The most common use was ornamental, and use depended on the socioeconomic status of the owner. The lower-income homes cultivated larger proportions of edible and medicinal plants. Gardens at the oldest localities, with the largest number of native species, contribute to the conservation of flora because they contain the largest number of native species. Furthermore, domestic gardens are good sources of employment for gardeners and are useful places to keep senior citizens active, helping these citizens relieve stress, maintain good health and teach young people the cultural uses of plants. The receptivity of the homeowners to the study opens the door to future research and conservation programs in the city.
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