The abundance and distributional (in)equalities of forageable street tree resources in Lagos Metropolis, Nigeria

IF 2.7 3区 环境科学与生态学 Q2 ECOLOGY
Ecosphere Pub Date : 2024-09-09 DOI:10.1002/ecs2.70002
Opeyemi Adeyemi, Charlie M. Shackleton
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Abstract

Foraging for wild resources links urban citizens to nature and biodiversity while providing resources important for local livelihoods and culture. However, the abundance and distributional (in)equity of forageable urban tree resources have rarely been examined. Consequently, this study assessed the abundance of forageable street trees and their distribution in Lagos metropolis, Nigeria. During a survey of 32 randomly selected wards across 16 local government areas (LGAs) in the metropolis, 4017 street trees from 46 species were enumerated. The LGA with the highest number of street trees was Ikeja, with 818 trees, while Lagos Island had the lowest count, with two trees. This disparity in tree numbers could be attributed to variations in human population density within each LGA. Ninety-four percent of the street trees surveyed had at least one documented use and 76% had two, making them potentially forageable. However, the most common species had relatively low forageability scores. Only 5.6% of the total street tree population was rated as highly forageable, with a usability score of at least 11 out of 15. The most forageable street trees were fruit trees and non-native species. The forageable street trees in the LGAs showed a significant disparity in their distribution, as evidenced by a Gini coefficient of 0.81. Overall, richer neighborhoods had a higher street tree abundance, richness, and forageability potential. To meet greening and foraging goals and address the current inequitable distribution, we suggest allocating more funds for greening, particularly in low-income neighborhoods. Further research should evaluate forageable species from other sites to acquire a detailed understanding of the distribution and abundance of forageable resources in Lagos metropolis.

Abstract Image

尼日利亚拉各斯大都市可采食行道树资源的丰富性和分布(不)均衡性
觅食野生资源将城市居民与自然和生物多样性联系起来,同时为当地生计和文化提供重要资源。然而,有关城市可采食树木资源的丰度和分布(不)公平性的研究却很少。因此,本研究评估了尼日利亚拉各斯大都市可采食行道树的丰度及其分布情况。在对拉各斯市 16 个地方政府辖区(LGAs)的 32 个随机选区进行调查期间,共列举了 46 个树种的 4017 棵行道树。行道树数量最多的地方政府区是伊科贾,有 818 棵,而拉各斯岛的行道树数量最少,只有 2 棵。树木数量的差异可能是由于每个地方行政区内的人口密度不同造成的。在接受调查的行道树中,94% 的树至少有一种有记载的用途,76% 的树有两种用途,这使它们具有潜在的觅食价值。不过,最常见的树种觅食能力得分相对较低。在所有行道树中,只有 5.6% 的行道树被评为高度可觅食树种,其可用性得分至少为 11 分(满分为 15 分)。最适合觅食的行道树是果树和非本地树种。基尼系数为 0.81,这表明地方政府所在地的可采食行道树在分布上存在显著差异。总体而言,较富裕社区的行道树丰度、丰富度和觅食潜力都较高。为实现绿化和觅食目标并解决目前的不公平分布问题,我们建议拨出更多资金用于绿化,尤其是在低收入社区。进一步的研究应评估其他地点的可觅食物种,以详细了解拉各斯大都市可觅食资源的分布和丰度。
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来源期刊
Ecosphere
Ecosphere ECOLOGY-
CiteScore
4.70
自引率
3.70%
发文量
378
审稿时长
15 weeks
期刊介绍: The scope of Ecosphere is as broad as the science of ecology itself. The journal welcomes submissions from all sub-disciplines of ecological science, as well as interdisciplinary studies relating to ecology. The journal''s goal is to provide a rapid-publication, online-only, open-access alternative to ESA''s other journals, while maintaining the rigorous standards of peer review for which ESA publications are renowned.
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