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Urban scavenging: vertebrates display greater sensitivity to land-cover and garden vegetation cover than invertebrates 城市食腐:与无脊椎动物相比,脊椎动物对土地覆盖和花园植被覆盖的敏感性更高
IF 2.9 3区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION Pub Date : 2024-09-10 DOI: 10.1007/s11252-024-01604-3
Jack R. Walker, Karl L. Evans, Rachel M. Jeffreys, Mani Pahlevani, Catherine L. Parr

Scavenging removes carrion or littered food waste from the environment, promoting nutrient cycling, and reducing waste management costs. These ecosystem services are important in urban environments, where high human population densities result in increased littered food waste. It is unclear how the magnitude of scavenging across urban-rural gradients is influenced by agent, land-cover type, and patch size. We investigated scavenging provision by vertebrates and invertebrates across a gradient of urbanisation, based on impervious surface cover, in woodlands and gardens in Liverpool, UK. The percentage dry weight loss of bait after 48 h, deployed within vertebrate exclusion cages or exposed to vertebrates and invertebrates, was used to quantify scavenging provision. General linear mixed effects models were used to assess the relative contributions of vertebrates and invertebrates across an urban-rural gradient, variation in scavenging between woodlands and gardens, and the effects of semi-natural vegetation cover on scavenging in gardens. We consider patch size as a preliminary assessment of how fragmentation influences scavenging. Vertebrates contributed substantially more to scavenging than invertebrates across the urbanisation gradient. Vertebrate scavenging was greater in woodlands than gardens, while invertebrate scavenging remained consistent. Scavenging increased with patch size in gardens, but not woodlands. Vertebrate scavenging increased with patch size and garden semi-natural vegetation cover. Urban woodlands and gardens make important contributions to scavenging-mediated ecosystem services. There is a need to increase the cover of semi-natural vegetation in gardens to increase their contributions, and protect and expand woodlands, especially in areas with a high demand for scavenging-mediated ecosystem services.

食腐能清除环境中的腐肉或垃圾食物残渣,促进养分循环,降低废物管理成本。这些生态系统服务在城市环境中非常重要,因为高人口密度会导致更多的食物垃圾被丢弃。目前还不清楚城乡梯度的清扫量是如何受媒介、土地覆被类型和斑块大小的影响的。我们调查了英国利物浦林地和花园中脊椎动物和无脊椎动物在城市化梯度中的食腐情况,其依据是不透水表面覆盖。将饵料放置在脊椎动物隔离笼中或暴露在脊椎动物和无脊椎动物的环境中 48 小时后,饵料干重损失的百分比被用来量化食腐提供量。一般线性混合效应模型用于评估城乡梯度上脊椎动物和无脊椎动物的相对贡献、林地和花园之间食腐的差异以及半自然植被覆盖对花园食腐的影响。我们将斑块大小作为对破碎化如何影响食腐的初步评估。在城市化梯度中,脊椎动物对食腐的贡献远远大于无脊椎动物。林地中脊椎动物的食腐作用大于花园,而无脊椎动物的食腐作用则保持一致。花园中的清扫量随着斑块面积的增加而增加,但林地中的清扫量却没有增加。脊椎动物的食腐量随着斑块面积和花园半自然植被覆盖率的增加而增加。城市林地和花园对以食腐为媒介的生态系统服务做出了重要贡献。有必要增加花园半自然植被的覆盖率,以提高它们的贡献,并保护和扩大林地,尤其是在对以食腐为媒介的生态系统服务需求较高的地区。
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引用次数: 0
Bee community response to multiple stressors along a tropical urban-peri urban gradient 热带城市-城市周边梯度上蜜蜂群落对多重压力的反应
IF 2.9 3区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION Pub Date : 2024-09-10 DOI: 10.1007/s11252-024-01609-y
Aditi Dutta, Indranil Samajpati, Parthiba Basu

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.

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。
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引用次数: 0
Soil unsealing in Mediterranean schoolyards: what factors drive ant communities? 地中海校园的土壤解封:蚂蚁群落的驱动因素是什么?
IF 2.9 3区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION Pub Date : 2024-09-09 DOI: 10.1007/s11252-024-01608-z
Louise Eydoux, Pierre Jay Robert, Bernard Kaufmann, Mickael Hedde, Alan Vergnes

Soil unsealing, the process of removing the impermeable top layer of soil, is increasingly advocated by urban planning policies. The role of unsealed areas in biodiversity conservation, particularly soil biodiversity, remains strongly understudied and especially in understanding the recolonization dynamics of soil biodiversity in these new habitats. Besides, the various types of soil cover resulting from soil unsealing could potentially influence the recolonization kinetics. This study focused on 79 unsealed plots located in 14 schoolyards along the French Mediterranean coast, investigating ant communities through the placement of 485 baits on unsealed plots. Two variables were considered: the duration since soil unsealing (1 or 2 years) and the type of soil cover (wood chips, plantations mulched with wood chips or lawns). Remarkably, these unsealed areas act as habitats for ants from their very first years of creation: a rich number of ant species (21 species; a fifth of the regional pool and 10% of the metropolitan French species) has been observed. Additionally, notable changes in ant communities were evident within a single year: plots unsealed for 2 years exhibited significantly higher indices of ant abundance and species richness compared to those unsealed for 1 year. However, the construction of these spaces influences the present communities, with wood chip-covered areas significantly less rich and abundant in ants compared to other ground cover types. These findings represent a promising starting point and offer insights into the potential of such projects for soil biodiversity conservation.

土壤解封,即去除不透水土壤表层的过程,越来越受到城市规划政策的倡导。人们对土壤解封区域在生物多样性保护(尤其是土壤生物多样性)方面的作用,尤其是在了解土壤生物多样性在这些新生境中的重新定殖动态方面,研究仍然严重不足。此外,土壤解封后形成的各种土壤覆盖可能会影响重新定殖动力学。这项研究主要针对位于法国地中海沿岸 14 所学校操场的 79 块未封闭地块,通过在未封闭地块上放置 485 个诱饵来调查蚂蚁群落。研究考虑了两个变量:土壤未密封的时间(1 年或 2 年)和土壤覆盖的类型(木屑、覆盖木屑的种植园或草坪)。值得注意的是,这些未封闭区域在建成后的最初几年就成为了蚂蚁的栖息地:观察到了丰富的蚂蚁物种(21 种;占地区物种库的五分之一和法国本土物种的 10%)。此外,蚂蚁群落在一年内就发生了显著变化:与一年内未封闭的地块相比,两年内未封闭的地块的蚂蚁丰度和物种丰富度指数明显更高。然而,这些空间的构造会影响目前的群落,与其他地面覆盖物类型相比,木屑覆盖区域的蚂蚁数量和丰富程度明显较低。这些发现是一个很有希望的起点,为了解此类项目在保护土壤生物多样性方面的潜力提供了启示。
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引用次数: 0
The urban in ecology: a quantitative textual analysis of the scientific literature over a century 生态学中的城市:一个世纪以来科学文献的定量文本分析
IF 2.9 3区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION Pub Date : 2024-09-06 DOI: 10.1007/s11252-024-01603-4
Silvia Flaminio, Joëlle Salomon Cavin, Guillaume Guex, Marco Moretti

Many authors have described ‘urban ecology’ as a subfield of ecology that emerged in the 1990s and has expanded exponentially. We propose to take a step further and analyse the expansion of the ‘urban’ in ecology with a novel quantitative approach, with the aim to better understand the relationship between ecology and the urban. Previous quantitative assessments of the urban in ecology have focused on short to medium time spans (5 to 40 years) and on research coined as ‘urban ecology’, and have rarely considered the content of publications (e.g., vocabulary and topics) using quantitative methods. In this paper, we conduct a bibliometric assessment and an in-depth quantitative textual data analysis of a corpus of 960 articles published from 1922 to 2018 in 10 leading English-language journals in ecology and conservation biology. We address the following questions: (1) When and how have urban environments been integrated into ecological research during the past century? (2) What urban research topics have been investigated in ecology during the same period? (3) How have these research topics changed through time? Our results show that the urban was never entirely absent from publications in ecology. The quantitative analyses highlight three turning points (1970s, 1990s and 2000s) in the relationship between ecology and the urban. Moreover, they help visualize the shift from particularly scattered publications at the beginning of the period to publications characterized by a more homogeneous vocabulary, reflecting the stabilization of a research field focused on the urban in ecology.

许多作者将 "城市生态学 "描述为生态学的一个子领域,该领域出现于 20 世纪 90 年代,目前已急剧扩大。我们建议更进一步,采用新颖的定量方法分析 "城市 "在生态学中的扩展,以便更好地理解生态学与城市之间的关系。以往对生态学中的 "城市 "进行的定量评估主要集中在中短时间(5 至 40 年)和被称为 "城市生态学 "的研究上,很少使用定量方法考虑出版物的内容(如词汇和主题)。在本文中,我们对 1922 年至 2018 年期间在生态学和保护生物学领域 10 种主要英文期刊上发表的 960 篇文章的语料库进行了文献计量学评估和深入的定量文本数据分析。我们探讨了以下问题:(1) 在过去的一个世纪中,城市环境何时以及如何被纳入生态学研究?(2) 同期生态学研究了哪些城市研究课题?(3) 这些研究课题随着时间的推移发生了哪些变化?我们的研究结果表明,生态学出版物中从未完全没有关于城市的内容。定量分析突出了生态学与城市关系的三个转折点(20 世纪 70 年代、20 世纪 90 年代和 21 世纪)。此外,这些分析还有助于直观地看出,从初期特别分散的出版物转变为词汇更加统一的出版物,这反映出生态学中以城市为重点的研究领域已趋于稳定。
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引用次数: 0
Wildlife resilience in an urban landscape: understanding land-use impacts in Cape Town 城市景观中的野生动物复原力:了解开普敦土地使用的影响
IF 2.9 3区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION Pub Date : 2024-09-06 DOI: 10.1007/s11252-024-01606-1
Akinwale Oladimeji, Zoë Woodgate, M. Justin O’Riain

Urbanisation is rapidly transforming and fragmenting natural habitats, disrupting ecosystems and negatively impacting biodiversity. The City of Cape Town (CoCT) is situated in a global biodiversity hotspot, but sustained anthropogenic activities have resulted in the local extirpation of most medium and large mammals. A recent survey of mammals within urban protected areas of CoCT revealed that a few, mostly medium-sized generalist species, persist. It is uncertain which native mammal species, if any, inhabit the unprotected green belts and parks in suburban and urban areas of the city. A total of 37 camera trap sites were established along four transects for a period of four months between 31 January and 31 May 2022. A total of 12 terrestrial mammal species were detected, nine of which were wild native mammals and three domestic species. Most detections were in natural habitat followed by suburban, with urban areas having the lowest detection rate of wildlife. Single season hierarchical multi-species occupancy models revealed that tree cover had a significant positive effect on both community and individual species occupancy. Contrary to our predictions, neither human population density nor the extent of the impervious surface at sites significantly affected occupancy. Cape grysbok (Raphicerus melanotis) were significantly more likely to occur at sites with a higher proportion of impervious surfaces supporting other recent research, which showed this species together with water mongoose (Atilax paludinosus) and Cape porcupine (Hystrix africaeaustralis) are one of only a few native mammals that appear to persist and may even thrive in human-modified landscapes. Our findings underscore the complexity of urban biodiversity conservation and the species-specific responses to environmental factors, emphasising the importance of tree cover in urban wildlife management.

城市化正在迅速改变和分割自然栖息地,破坏生态系统,对生物多样性产生负面影响。开普敦市(CoCT)位于全球生物多样性热点地区,但持续的人为活动已导致当地大多数中型和大型哺乳动物灭绝。最近对开普敦城市保护区内的哺乳动物进行的一项调查显示,少数哺乳动物(主要是中型综合物种)仍然存在。目前尚不清楚在城市郊区和市区未受保护的绿化带和公园中栖息着哪些本地哺乳动物物种(如果有的话)。在 2022 年 1 月 31 日至 5 月 31 日的四个月期间,沿四条横断面共设立了 37 个相机陷阱点。共发现 12 种陆生哺乳动物,其中 9 种为野生本地哺乳动物,3 种为家养哺乳动物。发现最多的是自然栖息地,其次是郊区,市区的野生动物发现率最低。单季分层多物种占有率模型显示,树木覆盖对群落和个体物种占有率都有显著的积极影响。与我们的预测相反,地点的人口密度和不透水表面的范围都不会对占有率产生显著影响。最近的其他研究表明,开普金羚(Raphicerus melanotis)与水獴(Atilax paludinosus)和开普豪猪(Hystrix africaeaustralis)是仅有的几种能在人类改造过的地貌中生存甚至繁衍的本地哺乳动物之一。我们的研究结果凸显了城市生物多样性保护的复杂性以及物种对环境因素的特定反应,强调了树木覆盖在城市野生动物管理中的重要性。
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引用次数: 0
When scale matters to disentangle the effect of habitat and temperature on ground-dwelling spider communities in urban environments 城市环境中栖息地和温度对地栖蜘蛛群落影响的尺度问题
IF 2.9 3区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION Pub Date : 2024-09-03 DOI: 10.1007/s11252-024-01591-5
Valentin Cabon, Dylan Amiar, Romain Georges, Vincent Dubreuil, Julien Pétillon, Hervé Quénol, Benjamin Bergerot

Urbanisation is an ongoing process associated with multiple environmental changes affecting ecosystems worldwide. Temperature and habitat are main drivers of animal communities within cities, but quantifying their relative weights remains a challenge, as urban heat islands (UHI) often co-vary with land-cover. This study aims to disentangle the effects and relevant scale of temperature and habitat on ground-dwelling spider communities. Based on an original sampling design, we collected 20,761 spider individuals belonging to 137 species at 36 sampling sites in the city of Rennes (northwest France). We characterised communities by assessing the number of trapped individuals at each site, as well as calculating several metrics to estimate taxonomic and functional diversities. Temperature metrics were obtained from two sensor networks monitoring UHI (100-m resolution) and near-ground temperature (1-m resolution) independently. Land-cover and isolation were used to describe landscapes, and vegetation structure to describe local habitats. We used generalized linear mixed models to disentangle the effects of temperature from those of habitat at the landscape and local scales, and identified relationships between community descriptors and predictors. We show that temperature-related metrics are important predictors of spider communities, and that the landscape and local scales have independent effects. Near-ground temperature alone explained 24% of the number of trapped individuals, whereas UHI explained 20% of taxonomic diversity. Local vegetation height and cover were significant predictors of functional diversity, and explained 22% and 25% of variance, respectively. We conclude that locally applied planning measures could mitigate the loss of taxonomic diversity induced by the atmospheric UHI and promote the establishment of more diverse communities.

城市化是一个持续的过程,与影响全球生态系统的多种环境变化相关。温度和栖息地是城市中动物群落的主要驱动因素,但由于城市热岛(UHI)经常与土地覆盖共同变化,量化它们的相对权重仍然是一个挑战。本研究旨在厘清温度和栖息地对地栖蜘蛛群落的影响及相关尺度。基于原创的取样设计,我们在雷恩市(法国西北部)的 36 个取样点收集了 137 个物种的 20761 只蜘蛛个体。我们通过评估每个采样点被困个体的数量来描述群落特征,并通过计算多个指标来估算分类和功能多样性。温度指标是通过两个传感器网络获得的,这两个网络分别监测超高温影响(100 米分辨率)和近地面温度(1 米分辨率)。土地覆盖和隔离用于描述地貌,植被结构用于描述当地生境。我们使用广义线性混合模型在景观和地方尺度上将温度的影响与栖息地的影响区分开来,并确定群落描述因子与预测因子之间的关系。我们的研究表明,与温度相关的指标是蜘蛛群落的重要预测因子,而景观尺度和局部尺度具有独立的影响。仅近地面温度就能解释 24% 的被困个体数量,而最高气温指数则能解释 20% 的分类多样性。当地植被高度和覆盖度是功能多样性的重要预测因子,分别解释了 22% 和 25% 的变异。我们的结论是,在当地采取规划措施可以减轻大气超高温引起的分类多样性损失,并促进建立更多样化的群落。
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引用次数: 0
Pollen diversity in urban honey: implications for bee foraging behaviour and urban green space planning 城市蜂蜜中的花粉多样性:对蜜蜂觅食行为和城市绿地规划的影响
IF 2.9 3区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION Pub Date : 2024-09-02 DOI: 10.1007/s11252-024-01607-0
D. Shishira, A. R. Uthappa, S. B. Chavan, G. C. Kuberappa, Dinesh Jinger, A. N. Sringeswara

Understanding the diversity of nectar sources in urban honey samples is crucial for effectively managing honey bee (Apis cerana indica Fabricius, 1978.) colonies and promoting pollinator health. This study analysed honey samples from various urban locations in Bangalore to assess pollen diversity, foraging behaviour, and the significance of urban flora in supporting beekeeping practices. A total of 39 pollen types were identified, with 62.50% of samples being unifloral, predominantly from Eucalyptus sp., followed by Casuarina equisetifolia, Areca catechu, Citrus sp., Mallotus philippensis, Cocos nucifera, and Ocimum sp. Multifloral samples (37.50%) highlighted the diverse diet available to urban bees, promoting biodiversity within urban landscapes. Major plant families contributing to pollen content included Myrtaceae, Arecaceae and Fabaceae. Seasonal variation in pollen composition reflected shifts in dominant nectar sources, with the monsoon season characterized by Casuarina equisetifolia, Areca catechu, Citrus sp., Mallotus philippensis, and Cocos nucifera, while winter saw Eucalyptus sp. and Ocimum sp. as predominant sources, and summer featured Pongamia pinnata. Cluster analysis found high similarity in pollen composition in honey samples from Bagalur, Yelahanka and M S Palya but distinct pollen in GKVK, suggesting unique conditions and emphasizing the importance of considering spatial variations in beekeeping practices and conservation strategies. This research underscores the importance of floral diversity in sustaining urban bee populations and provides guidance for urban planning and policy decisions to promote pollinator health and urban sustainability.

了解城市蜂蜜样本中花蜜来源的多样性对于有效管理蜜蜂(Apis cerana indica Fabricius, 1978.)本研究分析了来自班加罗尔不同城市地点的蜂蜜样本,以评估花粉多样性、觅食行为以及城市植物区系在支持养蜂实践中的重要性。研究共鉴定出 39 种花粉类型,其中 62.50%的样本为单花花粉,主要来自桉树,其次是马尾松、儿茶、柑橘、菲利蒲桃、椰子和欧加木。对花粉含量有贡献的主要植物科包括桃金娘科、山茶科和豆科。花粉成分的季节性变化反映了主要花蜜来源的变化,季风季节的特点是马尾松、Areca catechu、Citrus sp.、Mallotus philippensis 和 Cocos nucifera,冬季的主要来源是桉树和Ocimum sp.,夏季的特点是 Pongamia pinnata。聚类分析发现,Bagalur、Yelahanka 和 M S Palya 的蜂蜜样本中花粉成分高度相似,但 GKVK 的花粉却截然不同,这表明当地条件独特,并强调了在养蜂实践和保护战略中考虑空间差异的重要性。这项研究强调了花卉多样性对维持城市蜜蜂种群的重要性,并为城市规划和政策决策提供指导,以促进授粉者健康和城市可持续性。
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引用次数: 0
How the landscape pattern and landscape elements affect the source-based soundscape diversity 景观格局和景观元素如何影响基于声源的声景多样性
IF 2.9 3区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION Pub Date : 2024-08-29 DOI: 10.1007/s11252-024-01590-6
Weicong Fu, Jingkai Huang, Chengyu Ran, Wenqiang Fang, Shiyuan Fan, Yujie Zhao, Peilin Huang, Ziluo Huang, Jiaying Dong, Yuqing Huang, Ziru Chen

In urban green space (UGS), diverse acoustic resources are essential for enhancing the public’s well-being, as different sound sources can bring distinct auditory experiences. However, there is a lack of research on the sources-based soundscapes diversity (SSD). In this study, we fill this gap by exploring the characteristics of SSD in different recreational areas of UGSs across three urban gradients in Fuzhou City, China. Additionally, we investigated the relationship between SSD, landscape elements (LEs), and landscape patterns (LPs) at various spatial scales. Our findings identified 53 types of sound sources, predominantly biological sound and anthrophony. The alpha and beta diversity indices effectively characterized SSD in UGSs and captured the differences in three levels of urbanization. Our results showed that urbanization gradients significantly impact soundscape diversity, especially in terms of animal sounds and mechanical sounds. For LEs, we found that trees play a crucial role in enhancing the diversity of animal and recreation sounds, whereas the proportion of buildings negatively correlates with animal sounds. Our analysis between LPs and SSDs revealed a strong correlation between the built environment (mainly roads) and lawn with traffic sound. In contrast, a higher percentage of forest land was associated with more animal sounds and fewer recreational and mechanical sounds. Characterizing urbanization gradients and the factors affecting SSD can be used to guide the development and enhancement of soundscapes in UGS.

在城市绿地(UGS)中,多样化的声学资源对于提高公众的幸福感至关重要,因为不同的声源可以带来不同的听觉体验。然而,关于基于声源的声景多样性(SSD)的研究还很缺乏。本研究填补了这一空白,探讨了中国福州市三个城市梯度中不同休闲区的声景多样性特征。此外,我们还研究了不同空间尺度上 SSD、景观要素(LE)和景观模式(LP)之间的关系。我们的研究结果确定了 53 种声源,主要是生物声和人声。阿尔法和贝塔多样性指数有效地描述了 UGS 中的 SSD,并捕捉到了三个城市化水平的差异。我们的研究结果表明,城市化梯度对声景多样性有显著影响,尤其是在动物声音和机械声音方面。对于低地,我们发现树木在提高动物和娱乐声音的多样性方面起着至关重要的作用,而建筑物的比例则与动物声音呈负相关。我们对低地和高地的分析表明,建筑环境(主要是道路)和草坪与交通声音之间存在很强的相关性。相反,林地比例越高,动物叫声越多,娱乐和机械叫声越少。对城市化梯度和影响 SSD 的因素进行描述,可用于指导城市地质公园声景观的开发和改善。
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引用次数: 0
Small parks in residential neighborhoods as habitats for ground-dwelling beetles, spiders, and ants 住宅区内的小公园是地栖甲虫、蜘蛛和蚂蚁的栖息地
IF 2.9 3区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION Pub Date : 2024-08-27 DOI: 10.1007/s11252-024-01605-2
Shinsaku Koji, Shun Furukawa, Natsuki Ichijo, Yuki Yamaguchi, Akio Tanikawa, Kazuyuki Kudô

In residential landscapes, small neighborhood parks account for a considerable share of urban greenspaces. However, information on their significance for biodiversity conservation is limited. To determine the role of small neighborhood parks as habitat for ground-dwelling arthropods, we evaluated the effects of local and landscape factors on the diversity and traits of carabid beetles, spiders, and ants in small neighborhood parks in Niigata, Japan. Urbanization decreased carabid species richness and abundance, and it altered the species composition of carabids and spiders. The arthropods in urbanized sites were characterized by small-bodied, web-building, highly dispersive spiders, and possibly non-predatory carabids. In contrast, urbanization did not influence any diversity metrics of ants. At the local scale, ground cover, soil moisture, and park border permeability were the major drivers of arthropod diversity. Ground coverage with leaf litter was positively associated with ant occurrence. Soil moisture negatively affected carabid species richness and abundance, whereas it positively affected spider richness. Parks with humid soil conditions favored hunting, low-dispersive spiders. The low permeability of park borders decreased spider richness and altered community structure, which was characterized by highly dispersive, ballooning species. We conclude that small neighborhood parks support numerous species of habitat-generalist arthropods that are adapted to dry and open environments. These parks thus represent an important component of habitat networks in residential landscapes. Managing open environments, protecting litter layers, reducing artificial borders, and retaining other open greenspaces in the surrounding matrix can promote diverse arthropod communities. Such strategies are worth considering during urban planning.

在居住区景观中,小型街区公园在城市绿地中占有相当大的比例。然而,有关它们对生物多样性保护意义的信息却很有限。为了确定小型街心公园作为地栖节肢动物栖息地的作用,我们评估了当地和景观因素对日本新泻市小型街心公园中角甲虫、蜘蛛和蚂蚁的多样性和性状的影响。城市化降低了食肉目甲虫的物种丰富度和丰度,也改变了食肉目甲虫和蜘蛛的物种组成。城市化地区的节肢动物的特点是体型小、结网、高度分散的蜘蛛,以及可能是非捕食性的食蚁兽。相比之下,城市化并没有影响蚂蚁的任何多样性指标。在局部范围内,地面覆盖、土壤湿度和公园边界渗透性是节肢动物多样性的主要驱动因素。地面落叶覆盖率与蚂蚁出现率呈正相关。土壤湿度对食肉动物的物种丰富度和丰度有负面影响,而对蜘蛛的丰富度则有正面影响。土壤潮湿的公园有利于蜘蛛的狩猎和低分散性。公园边界的低渗透性降低了蜘蛛的丰富度并改变了群落结构,其特点是高分散性、气球式物种。我们的结论是,小型街区公园中栖息着大量适应干燥和开放环境的通用型节肢动物。因此,这些公园是居民区景观中栖息地网络的重要组成部分。管理开放环境、保护垃圾层、减少人工边界以及在周围基质中保留其他开放绿地,可以促进节肢动物群落的多样性。这些策略值得在城市规划中加以考虑。
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引用次数: 0
Urban pavements as a novel habitat for wild bees and other ground-nesting insects 城市人行道是野生蜜蜂和其他地栖昆虫的新栖息地
IF 2.9 3区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION Pub Date : 2024-08-27 DOI: 10.1007/s11252-024-01569-3
Claudia Weber, Grégoire Noël, Wiebke Sickel, Michael T. Monaghan, Aletta Bonn, Sophie Lokatis

Municipal authorities around the world have come to recognize the importance of making conservation and restoration a priority. Multiple urban restoration programs now foster insects and other pollinators through planting and sowing flowering plants, many of them within residential areas. But residents are not only walking next to pollinators visiting flowering sidewalk grass verges, they are also walking on top of them, nesting in the cracks and interstices of urban pavements.

Combining morphological and molecular monitoring schemes, we conducted a survey of urban pavements at twelve locations across Berlin and found that pavements can foster a surprising number and quantity of soil dwelling insects—in particular wild bees and wasps. Pavements located within 200 m to an insect-friendly flower garden were covered with significantly more nests of wild bees and solitary wasps, and showed higher species richness of these groups, while the degree of sealed surfaces in the surrounding had no effect per se. This underlines the positive impact that insect-friendly gardens can have for pollinators and other insects, even in highly sealed areas. Also, it shows the potential of cobbled pavements as valuable nesting sites in highly sealed urban areas. We provide a list of 55 species of ground-nesting Hymenoptera found in Berlin pavements, including 28 species of wild bees and 22 apoid wasps. In our study, the molecular approach only detected three Hymenoptera species and did not yield comparable results to classical monitoring. Nonetheless, using eDNA methods might be a promising tool for further studying soil nesting insects in the future, and to gain insights into the web of life in urban pavements.

世界各地的市政当局已经认识到将保护和恢复作为优先事项的重要性。目前,多个城市恢复项目通过种植和播种开花植物来培育昆虫和其他传粉昆虫,其中许多项目都在居民区内进行。结合形态学和分子监测计划,我们在柏林的 12 个地点对城市人行道进行了调查,结果发现人行道可以培育出数量惊人的土栖昆虫,尤其是野生蜜蜂和黄蜂。在距离昆虫友好型花圃 200 米以内的人行道上,野生蜜蜂和独居黄蜂的巢穴明显较多,而且这些昆虫的物种丰富度也较高,而周围地面的密封程度则没有任何影响。这突出表明,即使在高度密封的区域,昆虫友好花园也能对传粉昆虫和其他昆虫产生积极影响。同时,这也表明在高度密封的城市地区,鹅卵石路面有可能成为宝贵的筑巢场所。我们提供了一份在柏林人行道上发现的 55 种地巢膜翅目昆虫的清单,其中包括 28 种野生蜜蜂和 22 种无尾小蜂。在我们的研究中,分子方法仅检测到三种膜翅目昆虫,其结果无法与传统的监测方法相比。尽管如此,使用 eDNA 方法可能是未来进一步研究土壤筑巢昆虫和深入了解城市人行道生命网络的一个很有前途的工具。
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Urban Ecosystems
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