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Overlooked seed-dispersal modes and underestimated distances 被忽视的种子传播方式和被低估的传播距离
IF 6.4 1区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2024-03-26 DOI: 10.1111/geb.13835
Juan P. González-Varo, Beatriz Rumeu, Claudio A. Bracho-Estévanez, Lucía Acevedo-Limón, Christophe Baltzinger, Ádám Lovas-Kiss, Andy J. Green

Long-distance seed dispersal is a crucial process determining the distribution of plant biodiversity and, therefore, of major interest in biogeography and macroecology. A recent data article on Global Ecology and Biogeography presented a database of estimated seed-dispersal distance classes for the European flora, where the classes are defined by the morphological dispersal syndrome of species associated with a single dispersal mode. We explain how this article overlooks literature on the unreliable capacity of dispersal syndromes for predicting key dispersal modes involved in long-distance seed dispersal. Consequently, the published database does not consider the possibility that individual species can naturally be dispersed through multiple modes (polychory). Most importantly, the database consistently omits seed-dispersal modes that can mediate dispersal distances several orders of magnitude longer than the mode predicted by the syndromes. This is the case of many terrestrial and aquatic plants dispersed by animals, notably ungulates and waterbirds, and that of coastal plants dispersed by the sea. We thus urge caution when using this database to model potential plant dispersal because long-distance seed dispersal is underestimated in many species.

种子的远距离传播是决定植物生物多样性分布的关键过程,因此在生物地理学和宏观生态学中具有重要意义。最近,《全球生态学与生物地理学》(Global Ecology and Biogeography)上的一篇数据文章介绍了一个估算欧洲植物区系种子扩散距离等级的数据库,其中的等级是根据与单一扩散模式相关的物种的形态扩散综合征来定义的。我们解释了这篇文章是如何忽略了关于扩散综合征在预测种子远距离扩散的关键扩散模式方面能力不可靠的文献。因此,已发布的数据库没有考虑到单个物种可以通过多种模式(多模式)自然扩散的可能性。最重要的是,该数据库始终遗漏了一些种子传播模式,而这些模式的传播距离比综合模式预测的传播距离要长几个数量级。许多由动物(尤其是有蹄类动物和水鸟)散播的陆生和水生植物以及由海洋散播的沿海植物就属于这种情况。因此,我们建议在使用该数据库建立潜在的植物扩散模型时要谨慎,因为许多物种的远距离种子扩散都被低估了。
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引用次数: 0
Wide climatic niche breadth and traits associated with climatic tolerance facilitate eucalypt occurrence in cities worldwide 广泛的气候适应性和与气候耐受性相关的特征促进了桉树在全球城市中的分布
IF 6.4 1区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2024-03-23 DOI: 10.1111/geb.13833
Manuel Esperon-Rodriguez, Mark G. Tjoelker, Jonathan Lenoir, Bree Laugier, Rachael V. Gallagher
<div> <section> <h3> Aim</h3> <p>Eucalypts are important and popular urban tree species across cities worldwide. However, little is known about how their climatic niche breadth (CNB) and functional traits predict their success, and vulnerability, to current climate change in cities. We assessed the relationship between the CNB of eucalypts and key traits to understand their tolerance to climate change.</p> </section> <section> <h3> Location</h3> <p>Global urban areas, 66 cities in 21 countries.</p> </section> <section> <h3> Time period</h3> <p>1981 to 2022.</p> </section> <section> <h3> Major species studied</h3> <p>Fifty ‘eucalypt’ species belonging to the genera <i>Eucalyptus</i>, <i>Angophora</i> and <i>Corymbia</i>.</p> </section> <section> <h3> Methods</h3> <p>We used the species' safety margin concept to determine cities where eucalypts were planted outside the limits of their CNB, as defined from the native range, considering two extreme variables, maximum temperature of the warmest month (MTWM) and precipitation of the driest month (PDM). We assessed correlations between functional traits (leaf δ<sup>13</sup>C, leaf dry mass, leaf length, leaf N per dry mass, wood density) and negative safety margins, indicative of tolerance to non-native conditions.</p> </section> <section> <h3> Results</h3> <p>In total, 42 species planted in 40 cities exceeded their safety margins for MTWM, while 43 species in 38 cities exceeded their safety margins for PDM. Within 24 cities, all species exceeded their native CNB for both MTWM and PDM. The cities of Atakpame (Togo), Chennai (India), Chongqing (China) and the US cities of Phoenix and Riverside had the highest richness of eucalypt species growing outside their native CNB. Broadly, species with wide CNB, small leaves, high δ<sup>13</sup>C, high leaf N per dry mass and high wood density were more likely to persist in cities where climatic conditions exceeded their native CNB.</p> </section> <section> <h3> Main conclusions</h3> <p>Eucalypts occupy many cities experiencing climatic conditions outside their native CNB. Species with traits characteristic of heat and drought tolerance are more often planted in cities where climatic conditions may exceed their CNB native limits.</p> </section>
桉树是世界各地城市中重要且受欢迎的城市树种。然而,人们对桉树的气候生态位广度(CNB)和功能性状如何预测其在城市中的成功率以及对当前气候变化的脆弱性知之甚少。我们评估了桉树的气候生态位广度(CNB)与关键性状之间的关系,以了解它们对气候变化的耐受性。
{"title":"Wide climatic niche breadth and traits associated with climatic tolerance facilitate eucalypt occurrence in cities worldwide","authors":"Manuel Esperon-Rodriguez,&nbsp;Mark G. Tjoelker,&nbsp;Jonathan Lenoir,&nbsp;Bree Laugier,&nbsp;Rachael V. Gallagher","doi":"10.1111/geb.13833","DOIUrl":"10.1111/geb.13833","url":null,"abstract":"&lt;div&gt;\u0000 \u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Aim&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Eucalypts are important and popular urban tree species across cities worldwide. However, little is known about how their climatic niche breadth (CNB) and functional traits predict their success, and vulnerability, to current climate change in cities. We assessed the relationship between the CNB of eucalypts and key traits to understand their tolerance to climate change.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Location&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Global urban areas, 66 cities in 21 countries.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Time period&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;1981 to 2022.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Major species studied&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Fifty ‘eucalypt’ species belonging to the genera &lt;i&gt;Eucalyptus&lt;/i&gt;, &lt;i&gt;Angophora&lt;/i&gt; and &lt;i&gt;Corymbia&lt;/i&gt;.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Methods&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;We used the species' safety margin concept to determine cities where eucalypts were planted outside the limits of their CNB, as defined from the native range, considering two extreme variables, maximum temperature of the warmest month (MTWM) and precipitation of the driest month (PDM). We assessed correlations between functional traits (leaf δ&lt;sup&gt;13&lt;/sup&gt;C, leaf dry mass, leaf length, leaf N per dry mass, wood density) and negative safety margins, indicative of tolerance to non-native conditions.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Results&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;In total, 42 species planted in 40 cities exceeded their safety margins for MTWM, while 43 species in 38 cities exceeded their safety margins for PDM. Within 24 cities, all species exceeded their native CNB for both MTWM and PDM. The cities of Atakpame (Togo), Chennai (India), Chongqing (China) and the US cities of Phoenix and Riverside had the highest richness of eucalypt species growing outside their native CNB. Broadly, species with wide CNB, small leaves, high δ&lt;sup&gt;13&lt;/sup&gt;C, high leaf N per dry mass and high wood density were more likely to persist in cities where climatic conditions exceeded their native CNB.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Main conclusions&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Eucalypts occupy many cities experiencing climatic conditions outside their native CNB. Species with traits characteristic of heat and drought tolerance are more often planted in cities where climatic conditions may exceed their CNB native limits.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 ","PeriodicalId":176,"journal":{"name":"Global Ecology and Biogeography","volume":"33 6","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/geb.13833","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140192724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evolutionary history and environmental variability structure contemporary tropical vertebrate communities 当代热带脊椎动物群落的进化史和环境变异结构
IF 6.4 1区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2024-03-22 DOI: 10.1111/geb.13829
Chia Hsieh, Daniel Gorczynski, Robert Bitariho, Santiago Espinosa, Steig Johnson, Marcela Guimarães Moreira Lima, Francesco Rovero, Julia Salvador, Fernanda Santos, Douglas Sheil, Lydia Beaudrot
<div> <section> <h3> Aim</h3> <p>Tropical regions harbour over half of the world's mammals and birds, but how their communities have assembled over evolutionary timescales remains unclear. To compare eco-evolutionary assembly processes between tropical mammals and birds, we tested how hypotheses concerning niche conservatism, environmental stability, environmental heterogeneity and time-for-speciation relate to tropical vertebrate community phylogenetic and functional structure.</p> </section> <section> <h3> Location</h3> <p>Tropical rainforests worldwide.</p> </section> <section> <h3> Time period</h3> <p>Present.</p> </section> <section> <h3> Major taxa studied</h3> <p>Ground-dwelling and ground-visiting mammals and birds.</p> </section> <section> <h3> Methods</h3> <p>We used in situ observations of species identified from systematic camera trap sampling as realized communities from 15 protected tropical rainforests in four tropical regions worldwide. We quantified standardized phylogenetic and functional structure for each community and estimated the multi-trait phylogenetic signal (PS) in ecological strategies for the four regional species pools of mammals and birds. Using linear regression models, we test three non-mutually exclusive hypotheses by comparing the relative importance of colonization time, palaeo-environmental changes in temperature and land cover since 3.3 Mya, contemporary seasonality in temperature and productivity and environmental heterogeneity for predicting community phylogenetic and functional structure.</p> </section> <section> <h3> Results</h3> <p>Phylogenetic and functional structure showed non-significant yet varying tendencies towards clustering or dispersion in all communities. Mammals had stronger multi-trait PS in ecological strategies than birds (mean PS: mammal = 0.62, bird = 0.43). Distinct dominant processes were identified for mammal and bird communities. For mammals, colonization time and elevation range significantly predicted phylogenetic clustering and functional dispersion tendencies respectively. For birds, elevation range and contemporary temperature seasonality significantly predicted phylogenetic and functional clustering tendencies, respectively, while habitat diversity significantly predicted functional dispersion tendencies.</p> </section> <section>
热带地区栖息着世界上一半以上的哺乳动物和鸟类,但它们的群落是如何在进化时间尺度上形成的仍不清楚。为了比较热带哺乳动物和鸟类的生态进化组装过程,我们测试了生态位保守性、环境稳定性、环境异质性和物种分化时间等假说与热带脊椎动物群落系统发育和功能结构的关系。
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引用次数: 0
Power law in species–area relationship overestimates bacterial diversity in grassland soils at larger scales 物种-面积关系中的幂律高估了较大尺度草地土壤中的细菌多样性
IF 6.4 1区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2024-03-22 DOI: 10.1111/geb.13825
Biao Zhang, Kai Xue, Wenjing Liu, Shutong Zhou, Shipeng Nie, Yichao Rui, Li Tang, Zhe Pang, Linfeng Li, Junfu Dong, Cong Xu, Lili Jiang, Shaopeng Wang, Yanbin Hao, Xiaoyong Cui, Yanfen Wang
<div> <section> <h3> Aim</h3> <p>Species–area relationships (SAR) are widely utilized for estimating the species richness and its spatial turnover across various scales. Despite the prevalent characterization of SAR using the power law in many microbial community studies, its efficacy remains unvalidated. This study aims to characterize the microbial SAR and its mechanisms in alpine grassland soils on the Qinghai-Tibet Plateau (QTP).</p> </section> <section> <h3> Location</h3> <p>Qinghai-Tibet Plateau, China.</p> </section> <section> <h3> Time Period</h3> <p>August 2014.</p> </section> <section> <h3> Major Taxa Studied</h3> <p>Soil bacteria.</p> </section> <section> <h3> Methods</h3> <p>Soil samples were collected from five alpine grassland sites on the QTP. Employing a nested sampling strategy at each site, soil samples were collected in plot sizes ranging from 0.5 × 0.5 m<sup>2</sup> to 2048 × 2048 m<sup>2</sup>. Soil bacterial communities were analysed by sequencing 16S ribosomal RNA gene amplicons using an Illumina MiSeq.</p> </section> <section> <h3> Results</h3> <p>The bacterial SAR exhibited a logarithmic power law (<i>R</i><sup>2</sup>: 0.952–0.999), outperforming the power law (<i>R</i><sup>2</sup>: 0.701–0.852). Consequently, the most widely adopted power law led to an overestimation of species richness by up to 15.07% in areas >256 × 256 m<sup>2</sup>, and the regional maximum theoretical richness based on Chao1 by up to 9.88%. Mechanistically, the passive sampling hypothesis was refuted through the rarefied species richness analysis, and the disproportionate effect hypothesis was rejected based on analyses of the effective numbers of species number conversions for the probability of interspecific encounters (<i>S</i><sub>PIE</sub>). Notably, Pearson and multiple linear regression analyses indicated that the spatial turnover of bacterial richness was determined by the environmental heterogeneity (<i>R</i><sup>2</sup>: 0.855–0.999), rather or better than environmental variables themselves, supporting the ‘environment heterogeneity hypothesis’.</p> </section> <section> <h3> Main Conclusions</h3> <p>Soil bacterial SAR in alpine grasslands exhibited a logarithmic power relationship. Spatial turnover was primarily governed by the environme
物种-面积关系(SAR)被广泛用于估算物种丰富度及其在不同尺度上的空间周转。尽管许多微生物群落研究普遍使用幂律来描述 SAR,但其有效性仍有待验证。本研究旨在描述青藏高原(QTP)高寒草地土壤中微生物 SAR 的特征及其机制。
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引用次数: 0
Network specificity decreases community stability and competition among avian haemosporidian parasites and their hosts 网络特异性降低了鸟类血孢子虫寄生虫及其宿主之间的群落稳定性和竞争性
IF 6.4 1区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2024-03-22 DOI: 10.1111/geb.13831
Daniela de Angeli Dutra, Robert Poulin
<div> <section> <h3> Aim</h3> <p>Parasites play a fundamental role in shaping ecological communities and influencing trophic interactions. Understanding the factors that drive parasite impacts on community structure and stability (i.e. resilience to disturbances) is crucial for predicting disease dynamics and implementing effective conservation strategies. In this study, using avian malaria and malaria-like parasites as a model system, we investigated the relationship between specificity, community stability and parasite vulnerability and their association with host diversity and climate.</p> </section> <section> <h3> Location</h3> <p>Global.</p> </section> <section> <h3> Time period</h3> <p>2009–2023.</p> </section> <section> <h3> Major taxa studied</h3> <p>Avian malaria and malaria-like parasites.</p> </section> <section> <h3> Methods</h3> <p>By compiling occurrence data from a global avian haemosporidian parasite database (MalAvi), we constructed a comprehensive dataset encompassing 60 communities. We utilized a phylogenetic model approach to predict missing host–parasite interactions, enhancing the accuracy of our analyses. Network analyses based on bipartite interactions provided measures of network specificity, stability, modularity, parasite competition and vulnerability to extinction.</p> </section> <section> <h3> Results</h3> <p>We found that the high network specificity reduced community stability and decreased competition among parasites. Furthermore, we found that parasite vulnerability decreased with increasing community stability, highlighting the importance of community stability in host–parasite interactions for long-term parasite persistence. When exploring the influence of local host diversity and climate conditions on host–parasite community stability, we demonstrated that increasing host biodiversity and precipitation reduces parasite competition. Conversely, higher temperature raises competition among parasites.</p> </section> <section> <h3> Conclusion</h3> <p>These findings provide valuable insights into the mechanisms underlying parasite impacts on communities and the interplay between specificity, community stability and environmental factors. Further, we reveal the role of climate in shaping host–parasite interactions. By u
寄生虫在塑造生态群落和影响营养相互作用方面发挥着重要作用。了解寄生虫对群落结构和稳定性(即对干扰的恢复力)的影响因素对于预测疾病动态和实施有效的保护策略至关重要。在这项研究中,我们以禽类疟疾和类疟疾寄生虫为模型系统,调查了特异性、群落稳定性和寄生虫脆弱性之间的关系及其与宿主多样性和气候的关联。
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引用次数: 0
Bayesian joint species distribution model selection for community-level prediction 用于群落级预测的贝叶斯联合物种分布模型选择
IF 6.4 1区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2024-03-21 DOI: 10.1111/geb.13827
Malcolm S. Itter, Elina Kaarlejärvi, Anna-Liisa Laine, Leena Hamberg, Tiina Tonteri, Jarno Vanhatalo

Aim

Joint species distribution models (JSDMs) are an important tool for predicting ecosystem diversity and function under global change. The growing complexity of modern JSDMs necessitates careful model selection tailored to the challenges of community prediction under novel conditions (i.e., transferable models). Common approaches to evaluate the performance of JSDMs for community-level prediction are based on individual species predictions that do not account for the species correlation structures inherent in JSDMs. Here, we formalize a Bayesian model selection approach that accounts for species correlation structures and apply it to compare the community-level predictive performance of alternative JSDMs across broad environmental gradients emulating transferable applications.

Innovation

We connect the evaluation of JSDM predictions to Bayesian model selection theory under which the log score is the preferred performance measure for probabilistic prediction. We define the joint log score for community-level prediction and distinguish it from more commonly applied JSDM evaluation metrics. We then apply the joint community log score to evaluate predictions of 1918 out-of-sample boreal forest understory communities spanning 39 species generated using a novel multinomial JSDM framework that supports alternative species correlation structures: independent, compositional dependence and residual dependence.

Main conclusions

The best performing JSDM included all observed environmental variables and compositional dependence modelled using a multinomial likelihood. The addition of flexible residual species correlations improved model predictions only within JSDMs applying a reduced set of environmental variables highlighting potential confounding between unobserved environmental conditions and residual species dependence. The best performing JSDM was consistent across successional and bioclimatic gradients regardless of whether interest was in species- or community-level prediction. Our study demonstrates the utility of the joint community log score to compare the predictive performance of JSDMs and highlights the importance of accounting for species dependence when interest is in community composition under novel conditions.

物种联合分布模型(JSDM)是预测全球变化下生态系统多样性和功能的重要工具。现代物种联合分布模型的复杂性日益增加,因此有必要针对新条件下群落预测的挑战(即可转移模型)仔细选择模型。评估 JSDM 在群落水平预测方面的性能的常见方法是基于单个物种预测,这种方法没有考虑到 JSDM 固有的物种相关结构。在这里,我们正式提出了一种考虑物种相关性结构的贝叶斯模型选择方法,并将其应用于在广泛的环境梯度中比较替代 JSDM 的群落级预测性能,以模拟可转移应用。我们定义了社区级预测的联合对数分数,并将其与更常用的 JSDM 评估指标区分开来。然后,我们将群落联合对数分数应用于评估 1918 个样本外北方森林林下群落的预测结果,这些群落包括 39 个物种,这些群落是利用新型多叉 JSDM 框架生成的,该框架支持其他物种相关性结构:独立相关性、组成依赖性和残余相关性。增加灵活的残余物种相关性仅在应用了较少环境变量集的 JSDM 中改善了模型预测,突出了未观察到的环境条件与残余物种依赖性之间的潜在混杂。在不同的演替和生物气候梯度中,无论对物种还是群落水平的预测感兴趣,表现最好的 JSDM 都是一致的。我们的研究证明了联合群落对数评分在比较联合群落模式预测性能方面的实用性,并强调了在新条件下关注群落组成时考虑物种依赖性的重要性。
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引用次数: 0
Correction to ‘A global analysis of viviparity in squamates highlights its prevalence in cold climates’ 有鳞类动物胎生性的全球分析凸显其在寒冷气候中的普遍性》的更正
IF 6.4 1区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2024-03-19 DOI: 10.1111/geb.13836

Zimin, A., Zimin, S. V., Shine, R., Avila, L., Bauer, A., Böhm, M., Brown, R., Barki, G., de Oliveira Caetano, G. H., Castro Herrera, F., Chapple, D. G., Chirio, L., Colli, G. R., Doan, T. M., Glaw, F., Grismer, L. L., Itescu, Y., Kraus, F., LeBreton, M., … Meiri, S. (2022). A global analysis of viviparity in squamates highlights its prevalence in cold climates. Global Ecology and Biogeography, 31, 2437–2452. https://doi.org/10.1111/geb.13598

In the first paragraph of Section 3.2 (‘Assemblage-level analyses’), the text ‘Our assemblage-level dataset comprised 13,636 grid cells including 1–184 species’ is incorrect. This should have read as follows: ‘Our assemblage-level dataset comprised 13,636 grid cells including 1–136 species’.

We apologize for this error.

Zimin, A., Zimin, S. V., Shine, R., Avila, L., Bauer, A., Böhm, M., Brown, R., Barki, G., de Oliveira Caetano, G. H., Castro Herrera, F.. Chapple, D. G., Chirio, L., Colli, G. R., Doan, T. M., Glaw, F., Grismer, L. L., Itescu、Chapple, D. G., Chirio, L., Colli, G. R., Doan, T. M., Glaw, F., Grismer, L. L., Itescu, Y., Kraus, F., LeBreton, M., ... Meiri, S. (2022).有鳞类动物胎生性的全球分析凸显其在寒冷气候中的普遍性。Global Ecology and Biogeography, 31, 2437-2452. https://doi.org/10.1111/geb.13598In 第 3.2 节("集合级分析")第一段,"我们的集合级数据集由 13636 个网格单元组成,包括 1-184 个物种 "不正确。应改为我们的集合级数据集由 13,636 个网格单元组成,包括 1-136 个物种"。我们对此错误深表歉意。
{"title":"Correction to ‘A global analysis of viviparity in squamates highlights its prevalence in cold climates’","authors":"","doi":"10.1111/geb.13836","DOIUrl":"10.1111/geb.13836","url":null,"abstract":"<p>Zimin, A., Zimin, S. V., Shine, R., Avila, L., Bauer, A., Böhm, M., Brown, R., Barki, G., de Oliveira Caetano, G. H., Castro Herrera, F., Chapple, D. G., Chirio, L., Colli, G. R., Doan, T. M., Glaw, F., Grismer, L. L., Itescu, Y., Kraus, F., LeBreton, M., … Meiri, S. (2022). A global analysis of viviparity in squamates highlights its prevalence in cold climates. <i>Global Ecology and Biogeography</i>, 31, 2437–2452. https://doi.org/10.1111/geb.13598</p><p>In the first paragraph of Section 3.2 (‘Assemblage-level analyses’), the text ‘Our assemblage-level dataset comprised 13,636 grid cells including 1–184 species’ is incorrect. This should have read as follows: ‘Our assemblage-level dataset comprised 13,636 grid cells including 1–136 species’.</p><p>We apologize for this error.</p>","PeriodicalId":176,"journal":{"name":"Global Ecology and Biogeography","volume":"33 6","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/geb.13836","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140162229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Macroclimate and canopy characteristics regulate forest understory microclimatic temperature offsets across China 宏观气候和冠层特征调节中国各地林下小气候温度偏差
IF 6.4 1区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2024-03-14 DOI: 10.1111/geb.13830
Siying Chen, Pieter De Frenne, Koenraad Van Meerbeek, Qiqian Wu, Yan Peng, Haifeng Zheng, Kun Guo, Chaoxiang Yuan, Ling Xiong, Zemin Zhao, Xiangyin Ni, Fuzhong Wu, Kai Yue

Forest microclimates can contrast substantially from the macroclimate outside forests. These microclimates regulate understory biodiversity and ecosystem functions. Studies have quantified the global patterns and driving factors of forest understory temperature offsets, but data from China were almost missing, making the global assessment incomplete. To fill this knowledge gap, we quantitatively synthesized 494 paired observations from China extracted from 91 publications to quantify mean (Tmean), maximum (Tmax) and minimum temperature offsets (Tmin). Results showed that (1) forest canopies significantly buffered understory Tmean and Tmax against macroclimatic temperature, with average offsets of 1.0 and 1.5°C, respectively, while understory Tmin offsets were not significantly different from zero; (2) forest type (broadleaved, mixed, vs. coniferous) and forest location (rural vs. urban) did not affect Tmean, Tmax or Tmin offsets, but climate zone and season showed significant impacts; and (3) macroclimatic temperature, wind speed, tree height and canopy density also impacted temperature offsets, although their effects varied among Tmean, Tmax and Tmin. Our results complement the global assessment of forest buffering capacity, and reiterate the necessity for incorporating microclimatic variability into future bioclimatic modelling of species demography and distributions.

森林小气候与森林外的大气候会有很大反差。这些微气候调节林下生物多样性和生态系统功能。已有研究量化了林下温度偏移的全球模式和驱动因素,但几乎没有中国的数据,因此全球评估并不完整。为了填补这一知识空白,我们对从 91 篇文献中提取的 494 个中国配对观测数据进行了定量综合,以量化平均温度偏移(Tmean)、最大温度偏移(Tmax)和最小温度偏移(Tmin)。结果表明:(1) 森林树冠可显著缓冲林下平均温度(Tmean)和最高温度(Tmax)对宏观气候温度的影响,平均偏差分别为 1.0°C 和 1.5°C,而林下最低温度(Tmin)的偏差与零无显著差异;(2) 森林类型(阔叶林、混交林、针叶林)和森林位置(林区、林区和林区)对宏观气候温度的影响显著,平均偏差分别为 1.0°C 和 1.5°C。(2) 森林类型(阔叶林、混交林与针叶林)和森林位置(乡村与城市)不影响平均温度、最高温度或最低温度偏移,但气候带和季节有显著影响;(3) 宏观气候温度、风速、树高和树冠密度也影响温度偏移,但它们对平均温度、最高温度和最低温度的影响各不相同。我们的研究结果是对全球森林缓冲能力评估的补充,并重申了将微气候变化纳入未来物种数量和分布的生物气候建模的必要性。
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引用次数: 0
A unified framework for partitioning the drivers of stability of ecological communities 划分生态群落稳定性驱动因素的统一框架
IF 6.4 1区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2024-03-14 DOI: 10.1111/geb.13828
Jules Segrestin, Lars Götzenberger, Enrique Valencia, Francesco de Bello, Jan Lepš

Aim

Identifying the drivers of ecological stability is critical for ensuring the maintenance of ecosystem functioning and services, particularly in a changing world. Different ecological mechanisms by which biological communities stabilize ecosystem functions (i.e. “stabilizing effects”) have been proposed, yet with various theoretical expectations and debated conclusions. Here we propose a unified framework that aims at reconciling, and combining, different approaches to reliably test the strength of three stabilizing effects on the temporal constancy of ecosystem functions: the effects of (a) dominant species, (b) species asynchrony, and (c) diversity.

Innovation

Compared to existing developments the approach allows, for the first time, disentangling these three stabilizing effects at the level of individual communities. So far this was not possible, and conclusions depended on indirect tests and comparative analyses across communities. We also propose a graphical representation of the relative contributions of the three stabilizing effects on a ternary plot, allowing us to easily compare communities sampled in various ecological contexts in a standardized space.

Main conclusions

Our study answers the current need for a unified framework to link theoretical concepts on the temporal stability of ecological communities to data analysis. The present development promises flexible tests for a deeper understanding of the ecological stabilization of biodiversity and the relative importance of its components.

确定生态稳定性的驱动因素对于确保生态系统功能和服务的维持至关重要,尤其是在不断变化的世界中。人们提出了生物群落稳定生态系统功能的不同生态机制(即 "稳定效应"),但理论预期各不相同,结论也存在争议。在此,我们提出了一个统一的框架,旨在调和并结合不同的方法,可靠地测试生态系统功能时间不变性的三种稳定效应的强度:(a) 优势物种效应、(b) 物种异步效应和 (c) 多样性效应。
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引用次数: 0
Geometric effects of fragmentation are likely to mitigate diversity loss following habitat destruction in real-world landscapes 在现实世界的景观中,破碎化的几何效应很可能会减轻栖息地被破坏后的多样性损失
IF 6.4 1区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2024-03-13 DOI: 10.1111/geb.13826
Colleen Smith, Juan A. Bonachela, Dylan T. Simpson, Natalie J. Lemanski, Rachael Winfree
<div> <section> <h3> Aim</h3> <p>Habitat conversion is the number one threat to biodiversity. The loss of biodiversity due to habitat loss might be exacerbated if species are harmed by fragmentation per se—the breaking apart of natural habitat that remains (hereafter <i>fragmentation</i>). However, the evidence that species are harmed by habitat fragmentation is mixed. Studies at the patch scale tend to show that fragmentation reduces diversity due to negative demographic effects on species' dispersal, survival and fecundity. In contrast, studies at the landscape scale tend to show that fragmentation increases diversity. This discrepancy may be partly due to geometric effects, defined as greater species turnover between patches in more fragmented landscapes. Although these effects have been demonstrated theoretically and are expected to be stronger across larger spatial extents, it is unclear whether they are likely to occur in real-world settings with both realistic landscape patterns and communities. Here, we investigated the possibility of geometric effects using simulations combined with real-world landscape and community data.</p> </section> <section> <h3> Location</h3> <p>New Jersey, northeastern USA.</p> </section> <section> <h3> Time period</h3> <p>Current.</p> </section> <section> <h3> Taxa studied</h3> <p>Bees.</p> </section> <section> <h3> Methods</h3> <p>We focused on landscape sizes within the typical range for protected areas (36–576 ha), simulated forest loss using real landscape patterns, and simulated forest-bee communities based on field data we collected.</p> </section> <section> <h3> Results</h3> <p>We found weak but positive effects of fragmentation: immediately following forest destruction, the most fragmented forests harboured up to 7.3% more species than the least fragmented forests of the same area, in agreement with observational studies of biodiversity along fragmentation gradients. In contrast to expectations, however, the overall effects of fragmentation did not change with spatial extent.</p> </section> <section> <h3> Conclusions</h3> <p>Our results suggest that fragmentation can mitigate biodiversity loss immediately following habitat destruction, but that the benefits do not vary strongly with spatial extent in real-
生境转换是生物多样性面临的头号威胁。如果物种因生境破碎化(以下简称 "破碎化")而受到伤害,那么生境丧失造成的生物多样性损失可能会加剧。然而,物种受到栖息地破碎化危害的证据不一。斑块尺度的研究往往表明,破碎化对物种的扩散、存活和繁殖产生了负面的人口影响,从而降低了多样性。与此相反,景观尺度的研究往往表明,破碎化会增加多样性。造成这种差异的部分原因可能是几何效应,即在破碎化程度较高的景观中,斑块之间的物种更替率更高。虽然这些效应已在理论上得到证实,而且预计在更大的空间范围内会更强,但目前还不清楚这些效应是否可能在现实世界中的景观模式和群落中发生。在这里,我们通过模拟结合现实世界的景观和群落数据来研究几何效应的可能性。
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引用次数: 0
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Global Ecology and Biogeography
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