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Urban bird trends in a rapidly growing tropical city

机译：城市鸟趋势在快速增长的热带城市

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摘要

Long-term studies of urban birds are relatively scarce, especially in Africa. We analysed trends in species richness and bird species occurrence over a 32-year period in Kampala, Uganda, in order to assess changes in the bird community in a period that has shown rapid expansion of the city's human population. Given that species may respond to urbanisation according to their diet, we also analysed bird community trends of species groups defined according to predominant diet. There was an overall decline in species richness that was largely driven by declines in insectivores and granivores. General declines were evident also when the trends in the most common individual species in these two groups were considered. The occurrence of the commonest predator and scavenger species tended to increase over the period considered. Insectivorous species are likely to be especially affected by increasing urbanisation due to air pollution. Predators and scavengers are likely to have benefitted from the inability of municipal waste management to keep pace with growth in the human population, hence providing more potential food resources. Both insectivores and predators/scavengers are therefore good candidates for the development of urban indicators.
机译：城市鸟类的长期研究相对稀缺，特别是在非洲。我们分析了乌干达坎帕拉的32年代物种丰富性和鸟类发生的趋势，以评估鸟群在一段表明城市人口迅速扩张的时期的变化。鉴于该物种可根据其饮食响应城市化，我们还分析了根据主要饮食定义的物种群体的鸟群社区趋势。物种丰富的总体下降，在很大程度上受到食虫病和造粒病毒的下降。当考虑到这两组中最常见的个体种类的趋势也是明显的一般下降。最常见的捕食者和清除剂的发生往往会在考虑的期间增加。由于空气污染导致的城市化可能会尤其影响食虫物种。掠夺者和清除者可能会因市政废物管理而受益，以保持人口的增长，因此提供更多潜在的食物资源。因此，食虫和捕食者/清除者都是城市指标的发展良好的候选人。

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