热带城市-城市周边梯度上蜜蜂群落对多重压力的反应

IF 2.5 3区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION Urban Ecosystems Pub Date : 2024-09-10 DOI:10.1007/s11252-024-01609-y
Aditi Dutta, Indranil Samajpati, Parthiba Basu
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引用次数: 0

摘要

热带地区的城市化是一个复杂的现象,它可能会导致群落转移,而不是简单的物种灭绝,以应对城市周边和城市环境中的多种压力因素。我们研究了热带城市-城市周边梯度上不同压力因素对蜜蜂群落的影响,蜜蜂群落的健康是全球关注的保护问题。建筑面积增加、杀虫剂施用和空气污染等几种压力因素可能会有效调节城市-城市周边梯度上的蜜蜂群落组成和相应的功能多样性。我们在加尔各答特大城市周围的 20 个地点(包括公园和花园)调查了蜜蜂群落结构在相关压力因素作用下的变化。城市和城市周边地区的蜜蜂群落结构差异显著,城市地区的巢度值较低。网络分析还显示,Apis florea 和 Lasioglosssum sp.功能多样性随城市化而增加,随农药毒性而减少。功能冗余随城市化而减少。在城市化梯度上,各种压力因素对蜜蜂群落的影响各不相同。二氧化硫和农药毒性对蜜蜂的数量和多样性有负面影响。城市地点维持着更多的特化物种,因此更容易受到冲击,而城市周边地点的群落功能冗余性更强,因此相对更有弹性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Bee community response to multiple stressors along a tropical urban-peri urban gradient

Urbanization in tropical landscapes is a complex phenomenon that can lead to community shifts rather than simple species extinction in response to multiple stressors in peri-urban and urban settings. We have investigated the impacts of different stressors along a tropical urban-peri-urban gradient on the bee community, the health of which is a global conservation concern. Several stressors such as increased built-up area, pesticide application and air pollution may effectively regulate bee community composition and corresponding functional diversity along urban-peri urban gradients. We investigated the changes in bee community structure in response to associated stressors in 20 locations including parks and gardens along an urban-peri-urban gradient surrounding the megacity of Kolkata. Bee community structure differed significantly between urban and peri-urban sites with urban sites showing lower value of nestedness. Network analysis also revealed that Apis florea and Lasioglosssum sp. 1 were the most important species in the urban and peri-urban areas respectively, as they had the highest values in bee-site network parameters. Functional diversity increased with urbanization and decreased with pesticide toxicity. Functional redundancy decreased with urbanization. Individual stressors impacted the bee assemblage differentially along the urbanization gradient. SO2 and pesticide toxicity negatively influenced bee abundance and diversity. Urban sites sustained more specialized species and therefore are more vulnerable to shocks while peri-urban sites had a more functionally redundant community making it comparatively more resilient.

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来源期刊
Urban Ecosystems
Urban Ecosystems BIODIVERSITY CONSERVATION-ECOLOGY
CiteScore
5.70
自引率
6.90%
发文量
113
期刊介绍: Urban Ecosystems is an international journal devoted to scientific investigations of urban environments and the relationships between socioeconomic and ecological structures and processes in urban environments. The scope of the journal is broad, including interactions between urban ecosystems and associated suburban and rural environments. Contributions may span a range of specific subject areas as they may apply to urban environments: biodiversity, biogeochemistry, conservation biology, wildlife and fisheries management, ecosystem ecology, ecosystem services, environmental chemistry, hydrology, landscape architecture, meteorology and climate, policy, population biology, social and human ecology, soil science, and urban planning.
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