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Key drivers of avifauna in greenspace of institutional campuses in a state in Western Africa
Urban Forestry & Urban Greening ( IF 6.0 ) Pub Date : 2021-03-15 , DOI: 10.1016/j.ufug.2021.127092
Panshak Solomon Kumdet , Samuel T. Ivande , Filibus Danjuma Dami

Urbanization is causing rapid loss of important habitats for wildlife and most birds in urban areas are therefore unable to maintain a viable population due to poor habitat. However, some birds are able to retreat to urban greenspaces for safety and survival such that these areas may sometimes support high biodiversity. Understanding the dynamics that shape the distribution of birds in urban greenspaces is therefore necessary for setting priorities to improve outcomes for biodiversity conservation. In this study, we investigated the key drivers of bird species richness and abundance in greenspaces of institutional campuses. We surveyed a total of 53 transects (each of 500-meters in length and 200 m wide) for bird species in 15 institutional campuses in Plateau State, North-Central Nigeria. We sampled habitat level variables at every 100 m section of the transect, and also obtained landscape-level variables such as campus size and Normalized Difference Vegetation Index (NDVI) from satellite imagery. Data analysis revealed that bird species richness and abundance differed significantly between campus categories (highly, moderately and sparsely woody). We identified campus age, number of tree species and number of shrubs as strong and positive predictors of avifauna. Pedestrian and vehicular traffic however, were negatively related to bird species richness and abundance. We recommend that conservation effort and management planning should focus on the planting and growth of multiple components of vegetation structure with diverse trees and shrub complexity.



中文翻译:

西部非洲某州大学校园绿地中鸟类的主要驱动因素

城市化正在迅速造成野生动植物重要栖息地的丧失,由于栖息地恶劣,城市地区的大多数鸟类无法维持生存能力。但是,有些鸟类能够为了安全和生存而撤退到城市绿地,因此这些地区有时可能支持高生物多样性。因此,有必要了解影响城市绿地鸟类分布的动态因素,从而确定优先重点,以改善生物多样性保护的成果。在这项研究中,我们调查了机构校园绿色空间中鸟类物种丰富度和丰富度的关键驱动因素。我们在尼日利亚中北部高原州的15个机构园区中对总共53种样地(每个体长500米,宽200 m)进行了鸟类调查。我们在该样带的每100 m区域采样了栖息地水平变量,并从卫星图像中获得了景观水平变量,例如校园规模和归一化植被指数(NDVI)。数据分析表明,不同类别(高,中,稀疏木本)之间的鸟类物种丰富度和丰度存在显着差异。我们确定校园年龄,树木数量和灌木数量是鸟类的强而积极的预测指标。然而,行人和车辆通行与鸟类物种的丰富度和丰度负相关。我们建议保护工作和管理计划应着重于种植和生长具有多种树木和灌木丛的植被结构的多个组成部分。并且还从卫星图像中获取了景观级别的变量,例如校园规模和归一化植被指数(NDVI)。数据分析表明,不同类别(高,中,稀疏木本)之间的鸟类物种丰富度和丰度存在显着差异。我们确定校园年龄,树木数量和灌木数量是鸟类的强而积极的预测指标。然而,行人和车辆通行与鸟类物种的丰富度和丰度负相关。我们建议保护工作和管理计划应着重于种植和生长具有多种树木和灌木丛的植被结构的多个组成部分。并且还从卫星图像中获取了景观级别的变量,例如校园规模和归一化植被指数(NDVI)。数据分析表明,不同类别(高,中,稀疏木本)之间的鸟类物种丰富度和丰度存在显着差异。我们确定校园年龄,树木数量和灌木数量是鸟类的强而积极的预测指标。然而,行人和车辆通行与鸟类物种的丰富度和丰度负相关。我们建议保护工作和管理计划应着重于种植和生长具有多种树木和灌木丛的植被结构的多个组成部分。数据分析表明,不同类别(高,中,稀疏木本)之间的鸟类物种丰富度和丰度存在显着差异。我们确定校园年龄,树木数量和灌木数量是鸟类的强而积极的预测指标。然而,行人和车辆通行与鸟类物种的丰富度和丰度负相关。我们建议保护工作和管理计划应着重于种植和生长具有多种树木和灌木丛的植被结构的多个组成部分。数据分析表明,不同类别(高,中,稀疏木本)之间的鸟类物种丰富度和丰度存在显着差异。我们确定校园年龄,树木数量和灌木数量是鸟类的强而积极的预测指标。然而,行人和车辆通行与鸟类物种的丰富度和丰度负相关。我们建议保护工作和管理计划应着重于种植和生长具有多种树木和灌木丛的植被结构的多个组成部分。与鸟类物种丰富度和丰度负相关。我们建议保护工作和管理计划应着重于种植和生长具有多种树木和灌木丛的植被结构的多个组成部分。与鸟类物种丰富度和丰度负相关。我们建议保护工作和管理计划应着重于种植和生长具有多种树木和灌木丛的植被结构的多个组成部分。

更新日期:2021-03-22
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