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Multiple facets of diversity reveal different patterns and processes in aquatic arthropod communities across the world's most extreme high‐altitude treasure 多样性的多个方面揭示了世界上最极端的高海拔宝藏中水生节肢动物群落的不同模式和过程
IF 3.5 2区 农林科学 Q1 ENTOMOLOGY Pub Date : 2024-09-14 DOI: 10.1111/icad.12780
Junqian Zhang, Zhengfei Li, Jorge García‐Girón, Yihao Ge, Jani Heino, Jiali Yang, Xiong Xiong, Li Ma, Zhicai Xie
Revealing the mechanisms underlying community organization has long been a central interest for ecologists and biogeographers. Recent findings have suggested that different dimensions of biodiversity may be shaped by contrasting ecological processes, offering complementary insights about community assembly. However, studies integrating multiple diversity facets across the Qinghai‐Tibetan Plateau (QTP) remain insufficient. We combined multiple analytical frameworks to unravel the patterns (taxonomic, functional and phylogenetic) and correlates (local environment, land use and dispersal pathways) of aquatic arthropod diversity in lotic (stream) and lentic (wetland) ecosystems of the QTP. We observed strong phylogenetic signals in most functional traits, pointing to the influence of evolutionary processes on these faunas. Null models indicated that community structure in most streams and wetlands was mostly the result of random draws from the regional functional and phylogenetic species pool. The prevalence of stochasticity was most likely associated with the interplay of the paleogeographical history, the extremely harsh environmental conditions at high elevations and the subsequent impoverishment of the regional species pool. However, some streams and wetlands also exhibited phylogenetic overdispersion and functional clustering, emphasizing the potential importance of competitive exclusion and habitat filtering, respectively. Variation partitioning further revealed that both environmental filtering and dispersal limitation accounted for the spatial variation of diversity measures, with local environment overriding the effects of space and catchment land use. Overall, this study improves our understanding of community organization and diversity patterns in environmentally extreme alpine catchments, with broad implications for the conservation and management of one of the world’s most important high‐altitude treasures.
长期以来,揭示群落组织的内在机制一直是生态学家和生物地理学家关注的核心问题。最近的研究结果表明,生物多样性的不同方面可能是由截然不同的生态过程形成的,从而为群落的组合提供了互补的见解。然而,综合青藏高原多个多样性方面的研究仍然不足。我们结合多种分析框架,揭示了青藏高原溪流和湿地生态系统中水生节肢动物多样性的模式(分类、功能和系统发育)和相关因素(当地环境、土地利用和扩散途径)。我们在大多数功能特征中观察到了强烈的系统发育信号,这表明了进化过程对这些动物群落的影响。零模型表明,大多数溪流和湿地的群落结构主要是从区域功能和系统发育物种库中随机抽取的结果。随机性的普遍存在很可能与古地理历史、高海拔地区极端恶劣的环境条件以及随后区域物种库的贫乏等因素的相互作用有关。然而,一些溪流和湿地也表现出系统发育过度分散和功能集群,分别强调了竞争排斥和生境过滤的潜在重要性。变异分区进一步表明,环境过滤和扩散限制都是多样性测量的空间变异的原因,当地环境的影响超过了空间和集水区土地利用的影响。总之,这项研究增进了我们对环境极端的高山集水区群落组织和多样性模式的了解,对世界上最重要的高海拔珍宝之一的保护和管理具有广泛的意义。
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引用次数: 0
Pollinators respond positively to urban green space enhancements using wild and ornamental flowers 授粉昆虫对利用野生花卉和观赏花卉改善城市绿地作出积极回应
IF 3.5 2区 农林科学 Q1 ENTOMOLOGY Pub Date : 2024-09-10 DOI: 10.1111/icad.12779
Oliver Poole, Alba Costa, Christopher N. Kaiser‐Bunbury, Rosalind F. Shaw
Pollinator diversity and abundance are under direct threat from human activities. Despite societal dependence on pollinators for crop production, humankind continues to drive pollinator declines through agricultural intensification and urbanisation. Urban environments can provide refuge to some pollinators. There is a need, however, to understand how pollinator communities can be supported in these areas while also considering human needs. Public green spaces provide a promising avenue to target plant–pollinator conservation measures in an urban setting due to their large area, high abundance and low plant–pollinator biodiversity. We used a paired design to compare the plant community, pollinator community and plant–pollinator interactions of (i) public urban green spaces enhanced with wildflower meadows and pollinator‐friendly ornamental plantings to (ii) control unenhanced urban green spaces. The planting types within enhanced sites were also separately compared. Our results show that not only was the diversity of the overall pollinator community higher in enhanced than control sites, but also the complexity of some wild Hymenoptera and the abundance of Diptera pollinator groups. The negative impact of urbanisation on some pollinator groups was reduced in enhanced sites compared with control sites. Planting both pollinator‐friendly ornamental plants and wildflower meadows significantly increased the visits from Diptera and the diversity in the plant–pollinator community compared with wildflower plantings alone. Our results suggest that enhancing public spaces for pollinators has positive effects on key groups and can help mitigate the impacts of urbanisation. Non‐native ornamental plants can also play a role in enhancing green spaces for pollinators while maintaining their recreational functions. This supports a mixed‐planting approach for improving public green spaces in urban areas for both people and nature.
传粉昆虫的多样性和数量正受到人类活动的直接威胁。尽管社会依赖传粉昆虫进行作物生产,但人类继续通过农业集约化和城市化推动传粉昆虫的减少。城市环境可以为一些传粉昆虫提供庇护。然而,有必要了解如何在这些地区支持传粉昆虫群落,同时考虑人类的需求。由于公共绿地面积大、丰度高、植物授粉昆虫生物多样性低,因此为在城市环境中采取植物授粉昆虫保护措施提供了一个很有前景的途径。我们采用配对设计,比较了(i) 采用野花草地和授粉昆虫友好型观赏植物强化的城市公共绿地与(ii) 未强化的城市公共绿地的植物群落、授粉昆虫群落以及植物与授粉昆虫之间的相互作用。我们还分别比较了强化场地内的种植类型。我们的研究结果表明,与对照组相比,改善后的绿地不仅整体传粉昆虫群落的多样性更高,而且一些野生膜翅目昆虫的复杂性和双翅目传粉昆虫群落的丰富性也更高。与对照地点相比,城市化对某些传粉昆虫群落的负面影响在强化地点有所减少。与只种植野花相比,同时种植对授粉者友好的观赏植物和野花草甸可显著增加双翅目传粉者的访问量和植物-授粉者群落的多样性。我们的研究结果表明,为传粉昆虫改善公共空间对主要群体有积极影响,有助于减轻城市化带来的影响。非本地观赏植物在保持其休闲功能的同时,也能在为传粉昆虫改善绿地方面发挥作用。这支持采用混合种植的方法来改善城市地区的公共绿地,以造福人类和自然。
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引用次数: 0
Vertical stratification of leaf physical traits exerts bottom–up pressures on insect herbivory in a sugar maple temperate forest 叶片物理特征的垂直分层对糖槭温带森林中昆虫的食草性产生自下而上的压力
IF 3.5 2区 农林科学 Q1 ENTOMOLOGY Pub Date : 2024-08-30 DOI: 10.1111/icad.12777
Mahsa Hakimara, Emma Despland
Do light vertical gradients in temperate forest structure insect herbivore communities? We tested the hypothesis that the increase in light intensity from understory to forest canopy drives differences in leaf physical traits and bud burst phenology that impact insect herbivores and thus play a role in structuring both herbivore communities and the leaf damage they cause. Understanding these interactions is essential for addressing knowledge gaps in the dynamics of temperate deciduous forest ecosystems. Twelve sugar maple (Acer saccharum) sites were monitored in southern Quebec, examining insect herbivore patterns from understory saplings to mature tree‐shaded and sun canopy (where intensity is highest and canopy cover lowest) over the summers of 2020, 2021 and 2022. Additionally, we recorded leaf physical traits and sun exposure. Our findings revealed that leaf thickness increased along the vertical gradient in 2021, making mature tree leaves in the canopy less favourable to herbivores than understory sapling leaves. Accordingly, we recorded a consistent decrease in insect herbivory damage rates from understory to shaded and to sun canopy in 2020 and 2021, driven by leaf cutters, skeletonizers, stipplers and leaf miners. These results support our hypothesis that variation in leaf physical traits contributes to the vertical stratification of insect damage. This variation in leaf traits can be linked to light levels or to tree ontogeny. In 2022, the gradient of insect herbivore abundance corroborated the observed damage trends from the previous years. We calculated an average annual herbivory rate of 9.1% of the leaf surface in our study site. Overall, our study highlights the importance of vertical gradients in structuring insect herbivore communities and emphasizes the role of leaf traits in mediating these interactions. In addition, the average annual herbivory rate suggests limited evidence supporting a significant contribution of background herbivory to the decline of sugar maple forests.
温带森林的光垂直梯度是否会影响昆虫食草动物群落的结构?我们测试了这样一个假设:从林下到林冠,光照强度的增加推动了叶片物理性状和芽绽表型的差异,而这些差异会影响昆虫食草动物,从而在食草动物群落结构及其造成的叶片损害中发挥作用。了解这些相互作用对于填补温带落叶林生态系统动态方面的知识空白至关重要。在 2020 年、2021 年和 2022 年的夏天,我们对魁北克南部的 12 个糖枫(Acer saccharum)地点进行了监测,研究了从林下幼苗到成熟树荫和阳光树冠(强度最高,树冠覆盖率最低)的昆虫食草动物模式。此外,我们还记录了叶片的物理特征和阳光照射情况。我们的研究结果表明,2021年叶片厚度沿垂直梯度增加,使得树冠中的成熟树叶比林下树苗叶片更不利于食草动物。因此,我们记录到 2020 年和 2021 年从林下树冠到遮荫树冠再到向阳树冠,昆虫的食草动物危害率持续下降,其驱动力是切叶虫、镂空虫、刺吸虫和潜叶虫。这些结果支持了我们的假设,即叶片物理性状的变化有助于昆虫危害的垂直分层。这种叶片特征的变化可能与光照水平或树木的生长发育有关。2022 年,昆虫食草动物的丰度梯度与前几年观察到的危害趋势相吻合。我们计算出研究地点的年平均草食率为叶面的9.1%。总之,我们的研究突出了垂直梯度在昆虫食草动物群落结构中的重要性,并强调了叶片特征在这些相互作用中的中介作用。此外,年平均食草率表明,支持背景食草对糖槭树森林衰退有重要作用的证据有限。
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引用次数: 0
Evolutionary genomics analysis reveals a unique lineage of Megachile pruina found in an isolated population in Bermuda 进化基因组学分析揭示了百慕大一个孤立种群中 Megachile pruina 的独特品系
IF 3.2 2区 农林科学 Q1 ENTOMOLOGY Pub Date : 2024-08-30 DOI: 10.1111/icad.12776
Jennifer Rose, M. Thomas P. Gilbert, Mark Outerbridge, Hernán E. Morales

蜜蜂多样性的减少主要是由栖息地丧失、气候变化和入侵物种造成的,这一点已得到充分证明。在这一背景下,Megachile Latreille, 1802属(膜翅目:Megachilidae)这一种类繁多的独居食叶蜂缺乏全面的物种保护和分类评估,可能掩盖了种群数量下降和灭绝的事实。Megachile pruina 是百慕大的三种蜜蜂之一,也可能是岛上最后一种本地蜜蜂。它曾广泛分布于全岛各地,现在仅限于城堡港群岛自然保护区内 11.5 公顷的一小块区域。根据《百慕大保护物种法案》(Bermuda Protected Species Act),它被列为 "易危 "物种,其分类学和保护状况仍不确定,尤其是它与美国种群的进化关系。在这里,我们分析了核基因组和线粒体基因组,发现百慕大的M. pruina种群在遗传学上与美国本土种群截然不同,与任何取样的美国种群都没有密切联系,这表明百慕大的M. pruina种群代表了一个独特的进化系。我们的遗传多样性评估显示,与美国相比,百慕大种群的遗传多样性较低,凸显了比最初想象的更高的脆弱性。我们建议维持其目前的保护地位,并主张迫切需要扩大生态和生物研究,以促进适当的保护和监测措施。
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引用次数: 0
Reviving of Coenonympha oedippus: A comprehensive approach to the reintroduction of an endangered European butterfly 鹅膏蝶(Coenonympha oedippus)的复苏:重新引入欧洲濒危蝴蝶的综合方法
IF 3.5 2区 农林科学 Q1 ENTOMOLOGY Pub Date : 2024-08-30 DOI: 10.1111/icad.12778
Tatjana Čelik, Simona Kralj‐Fišer, Urban Šilc, Filip Küzmič, Branko Vreš
In this study, we focus on Coenonympha oedippus, an endangered butterfly species protected under Annexes II and IV of the EU Habitats Directive. Predominantly inhabiting semi‐open wet grasslands across Europe, this species also occupies abandoned sub‐Mediterranean dry grasslands. Ecological distinctiveness in its habitat use is reflected in differences in larval host plants, wing morphology and genetic composition, resulting in two ecotypes: wet and dry. Notably, by 2018, only one population of the wet ecotype survived in Slovenia, necessitating reintroduction as a critical strategy to avert its national extinction. Building on our conservation objectives, we implemented a 5‐year project (2018–2022) to develop protocols for source individual and substrate collection, ex situ breeding in semi‐natural conditions, thorough release and post‐release monitoring. Our efforts included breeding from 18 females, yielding 754 eggs in a breeding house. From these, we successfully reared and released 460 individuals, comprising 419 pupae and 41 butterflies. The project culminated with promising outcomes: the reintroduced population exhibited an 87% growth rate, while the source population, following its last reinforcement, showed a 79% increase. The project success can be attributed to a comprehensive understanding of species' ecological requirements and the establishment of a long‐term management plan. Key to our approach was adaptive management, which allowed for flexibility and refinement of protocols during implementation. Meticulous documentation and evaluation of all project activities were instrumental, culminating in the production of standardised annual reports. Additionally, the project was bolstered by strong collaboration among scientists, site managers, government agencies and national media.
在这项研究中,我们的重点是受欧盟栖息地指令附件 II 和 IV 保护的濒危蝴蝶物种 Coenonympha oedippus。该物种主要栖息于欧洲各地的半开阔湿草地,也栖息于被遗弃的亚地中海干草地。其生境利用的生态独特性体现在幼虫寄主植物、翅膀形态和基因组成的差异上,从而形成了两种生态型:湿型和干型。值得注意的是,到 2018 年,斯洛文尼亚仅有一个湿生态型种群存活,因此有必要将重新引入作为避免其在全国灭绝的关键策略。基于我们的保护目标,我们实施了一个为期 5 年的项目(2018-2022 年),以制定源个体和基质采集、半自然条件下的异地繁殖、彻底释放和释放后监测协议。我们的工作包括从 18 只雌鸟中进行繁殖,在繁殖舍中产出 754 枚卵。从中,我们成功饲养并释放了 460 只个体,包括 419 只蛹和 41 只蝴蝶。该项目最终取得了可喜的成果:重新引入的种群增长率为 87%,而来源种群在上次增殖后的增长率为 79%。项目的成功归功于对物种生态需求的全面了解和长期管理计划的制定。适应性管理是我们方法的关键,它允许在实施过程中灵活调整和完善协议。对所有项目活动进行细致的记录和评估非常重要,最终形成了标准化的年度报告。此外,科学家、遗址管理者、政府机构和国家媒体之间的紧密合作也为该项目提供了支持。
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引用次数: 0
What can an analysis of Australian tropical rainforest bark beetles suggest about the missing millions of Earth's insect species? 通过对澳大利亚热带雨林树皮甲虫的分析,我们可以了解地球上失踪的数百万昆虫物种的情况。
IF 3.2 2区 农林科学 Q1 ENTOMOLOGY Pub Date : 2024-08-19 DOI: 10.1111/icad.12775
Nigel E. Stork, Michael J. W. Boyle, Carl Wardhaugh, Roger A. Beaver

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引用次数: 0
Conservation implications of a genomic-based taxonomy for threatened allopatric Agriades butterflies 基于基因组的分类法对濒危异色蝶类的保护意义
IF 3.2 2区 农林科学 Q1 ENTOMOLOGY Pub Date : 2024-08-11 DOI: 10.1111/icad.12771
Nok Ting Lam, Vladislav Ivanov, Leonardo Dapporto, Roger Vila, Marko Mutanen, Vlad Dincă

对生物进化历史的充分了解和准确的分类框架是高效生物多样性保护措施的关键。这一点对欧洲蝴蝶尤为重要,因为欧洲蝴蝶通常被用作生物指示生物和保护伞物种。全北区蝴蝶属包括七个欧洲北极-高山物种,其中几个物种的分类地位尚有争议。它们是本地化和异地分布的,其中至少有两个物种具有很高的保护价值,即 A. aquilo(在欧洲,仅限于斯堪的纳维亚半岛北部)和 A. zullichi(西班牙南部特有)。尽管这些类群具有很高的保护价值且分类不确定,但对它们的分子研究仅限于 DNA 条形码。我们利用双位 RAD 测序(ddRADseq)研究了西古北界 Agriades 的进化史和物种划分。利用基因组数据进行的各种分析表明,glandon种群中有一个物种,pyrenaicus种群中有一个或两个物种。尽管主要的同域种群代表了重要的进化单元(ESUs),但前一物种组(即:glandon、aquilo、zullichi)的分化似乎相对较晚。在pyrenaicus物种组中发现了明显的地理结构,发现了四个同域ESU。沃尔巴克氏体筛选突出显示了几个等位基因组合的存在,其中一些与特定的 Agriades 种群有关。基因组数据揭示了欧洲 Agriades 的进化轨迹以及该属内分类过度分裂的趋势。这些发现为确定区域或种群(包括 ESUs)的优先次序以及管理潜在的种群强化或重新引入提供了遗传背景,从而有助于保护工作。
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引用次数: 0
Context-dependent effects of geographic, climate and land cover factors on hemipteran assemblages in different ecoregions of China 地理、气候和土地覆盖因素对中国不同生态区域半翅目昆虫群落的环境影响
IF 3.2 2区 农林科学 Q1 ENTOMOLOGY Pub Date : 2024-08-09 DOI: 10.1111/icad.12774
Jiaping Mao, Xiaoming Jiang, Wenjia Tang, Jani Heino, Janne Alahuhta, Xiaolei Huang

了解生物群落组成(即β多样性)是生物地理学和生态学的一个核心课题。我们比较了中国四个生态区(东北生态区、华北生态区、西藏生态区、华南生态区)中半翅目动物β多样性(总体相似度:βtotal,索伦森相似度;更替分量:βsim,集合间物种的更替;嵌套-结果分量:βsne,集合间丰富度的嵌套差异)与地理、气候和土地覆盖距离之间的关系。不同生态区域的半翅目昆虫组成差异显著。总体而言,随着地理、气候和土地覆盖距离的增加,βtotal和βsim均显著增加。差异-距离关系的截距和斜率在不同生态区之间均存在显著差异,表明不同生态区内组合的异质性程度不同,组合组成的变化率也不同。此外,βtotal 和 βsim 的斜率在东北生态区域最高,而在北部生态区域最低,表现出纬度和经度的差异模式。根据变异分区分析,虽然总体解释方差相对较低,但与气候和土地覆盖变量相比,空间变量解释了更大比例的方差。与扩散相关的过程和与生态位相关的过程都会影响半翅目昆虫的集合结构,而总体解释方差较低表明半翅目昆虫组成的高度差异受到本研究未发现的多种因素和过程的影响。
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引用次数: 0
Intraspecific trait variation of carrion beetle species and communities across elevations 不同海拔高度腐肉甲虫物种和群落的种内性状变异
IF 3.2 2区 农林科学 Q1 ENTOMOLOGY Pub Date : 2024-08-06 DOI: 10.1111/icad.12772
Qiao-Qiao Ji, Zhijing Xie, Yunga Wu, Zhuoma Wan, Caiyi Xu, Donghui Wu, Ting-Wen Chen, Alejandro Ordonez

跨越环境梯度的过滤过程可以构建群落内的性状变异模式。群落加权平均值(CWM)是一个指标,通常用来表示这种过滤过程的方向性和群落内类群的最佳适应策略。接近群落加权平均值表示更高的适应性,偏离这一最佳值会导致共存物种的相对丰度发生变化。我们研究了四种共存腐肉甲虫(鞘翅目:蚕科)跨海拔梯度的种内性状变异模式。研究在海拔 950 米到 1700 米之间、具有不同自然植被带的温带森林生态系统中进行。在测量的12个性状中,我们发现种内变异从34%(体长)到100%(背长、头长和头宽与体长之比)不等,在7个性状中,种内变异所占比例大于种间变异。在大多数性状中,性状范围与相对丰度呈正相关,性状范围表示物种在特定海拔的生态位广度。与远距离扩散相关的性状的CWM随海拔升高而降低,而与微生境利用相关的性状的CWM则呈现相反的趋势。在控制了物种特征的影响后,土壤温度对胫骨长度有影响,但土壤含水量对性状变化没有影响。两个甲虫物种的体宽和胸宽的变异模式支持CWM-最优假说;然而,另一个物种的体宽和胸长的性状变异模式却呈现出相反的趋势。我们的研究发现了腐肉甲虫物种内部可能存在高度变异的几种性状。这种高水平的种内性状变异可能使种群能够适应各种海拔高度和植被类型。
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引用次数: 0
The role of landscape factors in shaping bumble bee pathogen loads across regions of the eastern Nearctic 景观因素在形成近北极东部地区熊蜂病原体负荷中的作用
IF 3.2 2区 农林科学 Q1 ENTOMOLOGY Pub Date : 2024-08-06 DOI: 10.1111/icad.12773
Elena M. Gratton, Darin J. McNeil, Ren Sawyer, Anna Martinello, Christina M. Grozinger, Heather M. Hines

病原体和寄生虫是导致熊蜂数量下降的原因。它们的数量会受到许多非生物和生物因素的影响,因此管理这些蜜蜂的疾病需要了解这些因素对病原体负荷的相对影响。我们评估了大黄蜂(Bombus impatiens)和蜜蜂(Apis mellifera)中黑蜂王细胞病毒(BQCV)和畸形翅病毒的载量,以及大黄蜂中寄生虫Vairimorpha bombi和Crithidia bombi的载量。根据土地覆盖、花卉质量、蜜蜂多样性和天气等指标对病原体负荷进行了评估。研究结果与美国宾夕法尼亚州的类似数据以及北美其他有关熊蜂的景观研究结果进行了比较。与宾夕法尼亚州相比,北卡罗来纳州熊蜂病原体负荷的空间变化较小,这降低了检测景观效应的能力。例如,Crithidia相当普遍,而Vairimorpha则未检测到。来自这两个州的数据显示,已开发土地和蜜蜂与病毒载量(尤其是 BQCV)呈最一致的正相关,而森林和筑巢栖息地的可用性通常与病毒载量呈负相关。多变量模型仅支持北卡罗来纳州熊蜂夏季花卉资源与 BQCV 病毒量之间的正相关关系。结合更广泛的文献,这些数据表明,发达土地和蜜蜂的水平与病原体负荷的增加关系最大,而花卉资源和蜜蜂群落组成则显示出更多的环境依赖性影响。
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引用次数: 0
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Insect Conservation and Diversity
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