Global Ecology and Biogeography最新文献_第4页

The Increased Effect of Spring Leaf Unfolding on Autumn Senescence in the Northern and Southern Hemispheres 北半球和南半球春季叶片展开对秋季衰老的增强作用

IF 6 1区环境科学与生态学 Q1 ECOLOGY

Global Ecology and Biogeography

Pub Date : 2025-12-14 DOI: 10.1111/geb.70180

Dong Tang, Shubin Xie, Jie Peng, Ying Sun, Abraham Allan Degen, Yuan Sun, Jiali Luo, Zifan Li, Yaning Kuang, Lixue Wei, Weigang Hu, Longwei Dong, Qingqing Hou, Xiaobing Dong, Liang Zhang, Jinzhi Ran, Yongshuo H. Fu, Jianming Deng

Aim

To investigate the contributions of vegetation growth carryover (VGC, defined as the effect of present states of vegetation growth on subsequent phenophases) and climatic factors to plant phenology, particularly start-of-season (SOS) and end-of-season (EOS), and how these contributions have evolved globally over the past four decades.

Location

Global, with a focus on the Northern Hemisphere (NH) and Southern Hemisphere (SH).

Time Period

1963–2015 for ground observations, 1982–2022 for satellite NDVI data, and 1982–2022 for climate data (temperature, precipitation, radiation, and potential evapotranspiration).

Major Taxa Studied

Global vegetation, without specifying individual species.

Methods

We analysed two sets of satellite-derived NDVI data, ground-based phenological observations, and long-term climate data (temperature, precipitation, radiation, and potential evapotranspiration). Statistical models quantified the contributions of climatic factors and VGC to phenology trends.

Results

Globally, advanced SOS was driven primarily by increasing temperature and radiation, while delayed EOS was attributed to rising temperature and the carryover effect of spring vegetation growth (VGC_SOS). VGC_SOS was the dominant driver of EOS in the SH, whereas temperature played a larger role in the NH. Over the past four decades, the contribution of VGC_SOS to EOS has increased significantly on a global scale. However, the SH experienced pronounced “warming and drying” trends, which weakened the relative contribution of VGC_SOS to EOS compared to climate-driven delays.

Main Conclusions

VGC_SOS plays a substantial role in shaping EOS in both hemispheres, with its importance increasing over time. These findings improve our understanding of vegetation dynamics and offer valuable insights for predicting vegetation growth and carbon sequestration under future global warming scenarios.

研究植被生长结转（VGC，定义为植被生长现状对随后物候期的影响）和气候因子对植物物候学的贡献，特别是季节开始（SOS）和季节结束（EOS），以及这些贡献在过去40年中如何在全球范围内演变。

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引用次数: 0

Additive Components of Multi-Species Distributional Aggregation and Their Spatiotemporal Relationships With Multi-Dimensional Community Structure 多物种分布聚集的加性成分及其与多维群落结构的时空关系

IF 6 1区环境科学与生态学 Q1 ECOLOGY

Global Ecology and Biogeography

Pub Date : 2025-12-11 DOI: 10.1111/geb.70174

Ziyan Liao, Qi Xiao, Youhua Chen

<div> <section> <h3> Aim</h3> <p>Quantifying multi-species distributional aggregation remains challenging. We propose the additive partitioning of the two fundamental elements of distributional aggregation, data dispersion and spatial proximity for the purpose of addressing gaps in assessing aggregation patterns. We then interpret how these components spatiotemporally correlate with community structures in both theoretical and empirical settings.</p> </section> <section> <h3> Location</h3> <p>Barro Colorado Island and North America.</p> </section> <section> <h3> Time Period</h3> <p>1968–2018.</p> </section> <section> <h3> Major Taxa Studied</h3> <p>Birds and trees.</p> </section> <section> <h3> Methods</h3> <p>We derived additive components of dispersion and proximity and analysed their spatiotemporal dynamics using simulations and empirical data, linking them to alpha- and beta-level community structures.</p> </section> <section> <h3> Results</h3> <p>Numerical simulations showed that the more overlap of different species' distributions in space, the stronger the spatial proximity effect, while data dispersion increased with the increasing degree of aggregation within each species. Dispersion and its additive components were significantly and positively related to the overall dissimilarity and abundance gradient subcomponent of beta diversity, while proximity and its components were primarily significantly and negatively associated with overall dissimilarity and its balanced variation subcomponent. Empirically, at the alpha level, both dispersion and proximity were significantly higher for phylogenetically clumped tropical trees, but did not have a consistent relation with functional divergence for birds. At the beta level, it was shown that dispersion and proximity and their additive components could well predict the between-year temporal beta diversity components (subtractive and additive ones) of temporal beta diversity.</p> </section> <section> <h3> Conclusion</h3> <p>We proposed an additive partitioning framework for multi-species distributional aggregation and conducted a comprehensive investigation on the spatio-temporal relationships between multi-species distributional aggregation (and its components) and alpha/beta-level community structure. Overall, multi-species distributional aggregation (and its components) could well predict different features of community structure across spac

量化多物种分布聚集仍然具有挑战性。我们建议对分布聚集的两个基本要素，数据分散和空间接近性进行加性划分，以解决评估聚集模式的差距。然后，我们从理论和经验两方面解释了这些成分在时空上如何与社区结构相关。

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引用次数: 0

Time Lags in Biodiversity Data Processing Create the Illusion of an Invasion Slowdown 生物多样性数据处理的时间滞后造成了入侵放缓的错觉

IF 6 1区环境科学与生态学 Q1 ECOLOGY

Global Ecology and Biogeography

Pub Date : 2025-12-10 DOI: 10.1111/geb.70168

Kelsey C. Brock, Curtis C. Daehler

<div> <section> <h3> Aim</h3> <p>Understanding invasion trends is essential for mitigating the impacts of invasive species, yet their quantification is easily affected by temporal biases. Previous research has identified biases introduced by inadequate field surveying (delayed detection) but has overlooked the time between a species' detection and the communication of that detection in status reports, databases, or checklists –time delays we refer to as data processing lags. To address this gap, we conducted simulation studies and compared two real-world data sets to evaluate the effects of data processing lags on perceived invasion trends.</p> </section> <section> <h3> Location</h3> <p>General (simulations) and the Hawaiian Islands (case study).</p> </section> <section> <h3> Time Period</h3> <p>100 years.</p> </section> <section> <h3> Major Taxa Studied</h3> <p>General (simulations) and vascular plants (case study).</p> </section> <section> <h3> Methods</h3> <p>We manipulated the duration of data processing lags, varied where records were collected along the data pipeline (e.g., from identified specimens vs. published checklists), and examined how missing records affect perceived invasion trends. We also compared two real-world datasets of Hawaiian plant invasions to assess the effect of different data collection practices.</p> </section> <section> <h3> Results</h3> <p>Data processing lags can significantly distort invasion trends, creating the illusion of recent slowdowns in species invasions. Moreover, retrieving data at later stages in the pipeline can exacerbate this illusion. Our comparative analysis of real-world datasets confirms our simulated trends and highlights how different data collection methodologies can change the perceived shape and trajectory of invasion trends. Shortening data processing lags and improving the completeness of record retrieval can help “rescue” trendlines from perceived slowdowns.</p> </section> <section> <h3> Main Conclusions</h3> <p>Data processing lags are an under-recognised source of temporal bias that, like detection lags, can mislead invasion trend analyses. Future research should aim to further characterise data processing lags so that they can be accounted for. Shortening data processing lags through improved taxonomic expertise and data infrastructure can help avoid misleading conclusions about invasion dynamics.</p> </section>

目的了解入侵趋势对减轻入侵物种的影响至关重要，但其量化容易受到时间偏差的影响。先前的研究已经发现了不充分的实地调查（延迟检测）带来的偏差，但忽略了物种检测到在状态报告、数据库或检查表中进行检测的沟通之间的时间——我们称之为数据处理滞后。为了解决这一差距，我们进行了模拟研究，并比较了两个真实世界的数据集，以评估数据处理滞后对感知入侵趋势的影响。地点概况（模拟）和夏威夷群岛（案例研究）。时间：100年。主要分类群研究一般（模拟）和维管植物（案例研究）。方法我们调整了数据处理滞后的时间，改变了数据管道中收集记录的位置（例如，从已识别的标本与已公布的清单中收集），并检查了缺失记录如何影响感知的入侵趋势。我们还比较了夏威夷植物入侵的两个真实世界数据集，以评估不同数据收集方法的效果。结果数据处理滞后会严重扭曲入侵趋势，造成物种入侵最近放缓的错觉。此外，在管道的后期阶段检索数据可能会加剧这种错觉。我们对真实世界数据集的对比分析证实了我们的模拟趋势，并强调了不同的数据收集方法如何改变入侵趋势的感知形状和轨迹。缩短数据处理滞后和提高记录检索的完整性可以帮助“拯救”趋势线，使其免受感知到的减速。数据处理滞后是一种未被充分认识的时间偏差来源，与检测滞后一样，可能会误导入侵趋势分析。未来的研究应该着眼于进一步描述数据处理滞后的特征，以便对其进行解释。通过改进分类学专业知识和数据基础设施来缩短数据处理滞后，有助于避免关于入侵动态的误导性结论。

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引用次数: 0

Species Richness Gradients Vary Across Phylogenetic Scales 物种丰富度梯度在系统发育尺度上有所不同

IF 6 1区环境科学与生态学 Q1 ECOLOGY

Global Ecology and Biogeography

Pub Date : 2025-12-10 DOI: 10.1111/geb.70067

Antonin Machac, Allen Hurlbert, Juliano Sarmento Cabral, Felipe O. Cerezer, Cristian S. Dambros, Susanne Fritz, Catherine H. Graham, Oskar Hagen, Florian Hartig, Shan Huang, Mikael Pontarp, David Storch

<div> <section> <h3> Aim</h3> <p>To determine how species richness gradients—commonly considered universal—vary across the phylogenetic hierarchy of birds and mammals, and to uncover how clade age and size predetermine the gradients.</p> </section> <section> <h3> Location</h3> <p>Global.</p> </section> <section> <h3> Time Period</h3> <p>Last 120 million years.</p> </section> <section> <h3> Taxa Studied</h3> <p>Birds and mammals (~15,000 species).</p> </section> <section> <h3> Methods</h3> <p>We used large-scale phylogenies of birds and mammals and captured the species richness gradient for each of their monophyletic clades. Gradient strength was quantified with respect to latitude, environmental productivity and temperature using multiple measures (raw slopes, log transformation, log–log transformation, and correlations). To distinguish statistical from biological effects, we compared the observed gradients to those generated by null models that randomly reassigned species to clades while preserving the phylogeny and species distributions.</p> </section> <section> <h3> Results</h3> <p>Species richness gradients show considerable variation. Small and young clades exhibited inconsistent gradients—including reverse or flat gradients—while older and larger clades converged on steep, consistent gradients. Even moderately large clades (~500 species) commonly displayed reverse gradients. Null models replicated this trend but only partially, implying that biological effects also drive gradient variation. These phylogenetic trends were sensitive to the choice of gradient measure: raw slopes frequently inflated the strength of this trend and the apparent differences among clades, while log and log–log transformations revealed only moderate trends.</p> </section> <section> <h3> Main Conclusions</h3> <p>Species richness gradients are not universal, nor are they phylogenetic scale-invariant. Instead, they follow systematic trends across the phylogenetic hierarchy. Young, small clades often bear signatures of their region of origin and historical dispersal, whereas older, larger clades converge on similar gradients. Recognising the variation and the phylogenetic trends within it elucidates the formation of biodiversity patterns. We offer guidelines for choosing

目的确定物种丰富度梯度-通常被认为是普遍的-在鸟类和哺乳动物的系统发育等级中是如何变化的，并揭示进化枝的年龄和大小如何预先决定梯度。全球位置。时间：过去一亿两千万年前。已研究的鸟类和哺乳动物（约15000种）。方法利用鸟类和哺乳动物的大尺度系统发育数据，获取其单系进化枝的物种丰富度梯度。利用多种测量方法（原始坡度、对数变换、对数-对数变换和相关性），对纬度、环境生产力和温度的梯度强度进行了量化。为了区分统计效应和生物效应，我们将观察到的梯度与零模型产生的梯度进行了比较，零模型在保留系统发育和物种分布的同时将物种随机重新分配到进化支。结果物种丰富度梯度变化较大。小枝和年轻枝表现出不一致的梯度，包括反向梯度或平坦梯度，而老枝和较大枝则聚集在陡峭的、一致的梯度上。甚至中等规模的枝（约500种）通常也表现出相反的梯度。零模型复制了这一趋势，但只是部分地，这意味着生物效应也驱动梯度变化。这些系统发育趋势对坡度测量的选择很敏感：原始坡度经常夸大这种趋势的强度和进化支之间的明显差异，而对数和对数-对数变换只显示出温和的趋势。物种丰富度梯度并不是普遍存在的，也不是系统发育尺度不变的。相反，它们遵循整个系统发育等级的系统趋势。年轻的小枝通常带有其起源区域和历史分散的特征，而更老的大枝则在类似的梯度上收敛。认识其中的变异和系统发育趋势阐明了生物多样性模式的形成。我们提供了选择梯度测量的指导方针，认为多个指标，结合零模型的仔细使用，对于细致理解全球生物多样性模式如何以及为什么偏离假定的普遍梯度是必要的。

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引用次数: 0

Aquatic Ecosystem Stability Depends on Microbial Biogeography 水生生态系统的稳定性取决于微生物生物地理学

IF 6 1区环境科学与生态学 Q1 ECOLOGY

Global Ecology and Biogeography

Pub Date : 2025-12-05 DOI: 10.1111/geb.70179

Wanzhu Li, Baoli Wang, Cong-Qiang Liu

<div> <section> <h3> Aim</h3> <p>Aquatic ecosystem stability is mediated by microbial interactions across multiple processes, but its spatial comparability and distribution patterns are poorly understood. A large-scale field survey spanning diverse aquatic ecosystems was conducted to characterise spatiotemporal ecosystem functional stability (EFS) at genetic, population and ecosystem levels. The study aimed to (1) elucidate geographical patterns of aquatic ecosystem stability and their driving factors and (2) explore the characteristics of ecosystem stability across biological organisation levels.</p> </section> <section> <h3> Location</h3> <p>China.</p> </section> <section> <h3> Time Period</h3> <p>July to August in 2019 and 2021; bimonthly from September 2021 to July 2022.</p> </section> <section> <h3> Major Taxa Studied</h3> <p>Archaea, bacteria, phytoplankton.</p> </section> <section> <h3> Methods</h3> <p>A framework was developed within the biodiversity-ecosystem function paradigm to parameterize functional variability, taxonomic variability and EFS in aquatic ecosystems. The carbon biogeochemical cycle served as a key indicator of ecological functions. At the gene level, targeted variables included carbon-cycling functional genes and bacterial and archaeal community composition; at the population level, photosynthetic efficiency and phytoplankton community structure were analysed; and at the ecosystem level, δ<sup>13</sup>C signatures and microbial community composition (including phytoplankton, bacteria and archaea) were assessed. These hierarchical variables enabled the characterisation of EFS as well as functional and taxonomic variability from genes to ecosystems.</p> </section> <section> <h3> Results</h3> <p>The EFS exhibited a clear geographical pattern, which was regulated by a trade-off between the functional and taxonomic variability of planktonic microbial consortia. Notably, EFS displayed allometric scaling from gene to ecosystem levels, with this hierarchy-specific evolution potentially endowing EFS with multiple perspectives. Furthermore, within the EFS hierarchy, wetlands exhibited the lowest scaling-up magnitude compared to other aquatic ecosystems (i.e., rivers, lakes and reservoirs). These quantitative attributes of ecosystem stability imply a current state-dependent regulatory mechanism for managing ecological resilience in the Earth System.</p> </section> <section> <h3> Main Conclusion</h3>

目的水生生态系统的稳定性是由微生物多过程相互作用介导的，但其空间可比性和分布格局尚不清楚。通过对不同水生生态系统的大规模野外调查，在遗传、种群和生态系统水平上对时空生态系统功能稳定性进行了表征。本研究旨在：(1)阐明水生生态系统稳定性的地理格局及其驱动因素；(2)探索生态系统稳定性的跨生物组织水平特征。中国的位置。2019年和2021年7月至8月；从2021年9月到2022年7月，每两个月一次。主要分类群研究古细菌，细菌，浮游植物。方法在生物多样性-生态系统功能范式中建立了一个框架，以参数化水生生态系统的功能变异性、分类变异性和EFS。碳生物地球化学循环是生态功能的重要指标。在基因水平上，目标变量包括碳循环功能基因和细菌和古细菌群落组成；在种群水平上，分析了光合效率和浮游植物群落结构；在生态系统水平上，分析了δ 13c特征和微生物群落组成（包括浮游植物、细菌和古细菌）。这些层次变量使EFS的特征以及从基因到生态系统的功能和分类变异性成为可能。结果浮游微生物群落的功能变异性和分类变异性相互权衡，形成了明显的地理格局。值得注意的是，EFS表现出从基因到生态系统水平的异速缩放，这种层级特异性进化可能赋予EFS多种视角。此外，在EFS等级中，与其他水生生态系统（即河流、湖泊和水库）相比，湿地表现出最低的放大幅度。这些生态系统稳定性的定量属性暗示了地球系统中管理生态恢复力的当前状态依赖调节机制。主要结论水生生态系统的稳定性在不同的生物组织水平上依赖于微生物生物地理。

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引用次数: 0

The Overlooked Link Between Different Resource Partitioning Strategies and Plant Species Richness in Tropical Alpine Ecosystems 热带高寒生态系统不同资源分配策略与植物物种丰富度的关系

IF 6 1区环境科学与生态学 Q1 ECOLOGY

Global Ecology and Biogeography

Pub Date : 2025-12-04 DOI: 10.1111/geb.70169

Martha Kandziora, Diana L. A. Vásquez, Christian Brochmann, Abel Gizaw, Lovisa Gustafsson, Desalegn Chala, Mercè Galbany-Casals, Filip Kolář, Petr Sklenář, Nicolai M. Nürk, Roswitha Schmickl

Aim

Species coexistence is based on resource partitioning and modulates biodiversity patterns across climates, latitudes and altitudes. Resource partitioning can occur via niche size or separation in the geographic range or ecological niche. While resource partitioning promotes biodiversity, the impact of different partitioning strategies on species richness remains largely unexplored.

Location

Two ecosystems with similar climates and ages are the species-rich tropical alpine ecosystem in the South American Andes and the more species-poor tropical alpine ecosystem in the eastern African mountains.

Time Period

Present-day distribution and climatic conditions, integrating phylogenetic information extending back to the last 7 million years maximum.

Major Taxa Studied

Six lineages from the Asterales; three in each ecosystem, respectively.

Methods

We test whether geographic range and climatic niche partitioning strategies may explain differences in species richness between two ecosystems. We combine phylogenomic data with occurrence records and estimate metrics of size and overlap for climatic niche and geographic range.

Results

We show that the Andean species have larger climatic niches than the African species, suggesting that niche size is not explaining higher species richness in the Andes. Instead, a striking pattern for species with overlapping geographic ranges emerged: the Andean species show less climatic niche overlap than the African species, indicating more effective niche separation among Andean species.

Main Conclusions

We hypothesise that differences in resource partitioning, specifically increased niche separation among geographically overlapping species in the Andes compared to the eastern African mountains, contribute to the species richness difference between these tropical alpine biodiversity hotspots.

目的物种共存以资源分配为基础，调节着不同气候、纬度和海拔的生物多样性格局。资源分配可以通过生态位大小或地理范围或生态位的分离来实现。虽然资源分配促进了生物多样性，但不同分配策略对物种丰富度的影响仍未得到充分研究。两个具有相似气候和年龄的生态系统是南美洲安第斯山脉物种丰富的热带高山生态系统和东非山脉物种较少的热带高山生态系统。现在的分布和气候条件，整合了系统发育信息，可以追溯到最近700万年的最大值。主要分类群研究了菊科植物的6个谱系每个生态系统分别有三个。我们测试地理范围和气候生态位划分策略是否可以解释两个生态系统之间物种丰富度的差异。我们将系统基因组数据与发生记录结合起来，并估计气候生态位和地理范围的大小和重叠度量。结果安第斯物种比非洲物种具有更大的气候生态位，这表明生态位大小并不能解释安第斯物种更高的物种丰富度。相反，地理范围重叠的物种出现了一个惊人的模式：安第斯物种比非洲物种表现出更少的气候生态位重叠，表明安第斯物种之间更有效的生态位分离。我们推测，与东非山区相比，安第斯山脉的资源分配差异，特别是地理重叠物种之间的生态位分离增加，导致了这些热带高山生物多样性热点地区物种丰富度的差异。

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引用次数: 0

Latitudinal Beta-Diversity Gradient of Riverine Macroinvertebrate: Interplays of Climatic and Land Use Factors 河流大型无脊椎动物的纬向Beta多样性梯度：气候和土地利用因素的相互作用

IF 6 1区环境科学与生态学 Q1 ECOLOGY

Global Ecology and Biogeography

Pub Date : 2025-12-04 DOI: 10.1111/geb.70171

Ruxia Qiao, Hanrui Wang, Yuqing Lin, Qiuwen Chen, Jianyun Zhang, Kai Chen, Tao Feng, Shufeng He, Hanlu Yan

Aim

Climate change and land use have major effects on macroinvertebrate biodiversity, but it is unclear how they shape spatial variations, particularly at large scales. This study explored the latitudinal patterns of beta diversity in riverine macroinvertebrate assemblages and examined how they are shaped by climate and land use.

Location

China (18°–48° N).

Time Period

From 2006 and 2021.

Major Taxa Studied

Riverine macroinvertebrates.

Method

A comprehensive dataset covering macroinvertebrate taxa from 42 watersheds across China was compiled to explore the latitudinal patterns of taxonomic, functional, and phylogenetic beta diversities, including turnover and nestedness components. Generalised additive models were used to assess the impacts of climatic and land use variables, selected from 20 climatic and 10 land use candidates, on latitudinal patterns of beta diversity.

Results

Taxonomic and functional beta diversities shared a non-monotonic latitudinal pattern, minimised at 24°–30° N, contrasting with the monotonic increase in phylogenetic beta diversity. Taxonomic beta diversity was dichotomously regulated by climatic stability and land use: diminishing nestedness in low-latitude regions while augmenting spatial turnover in high-latitude regions as latitude increased. For functional beta diversity, climate was identified as an indirect factor influencing historical trait-pool constraints, whereas land use was identified as a direct factor altering its nestedness component. Phylogenetic beta diversity demonstrated no significant association with contemporary environmental variables.

Main Conclusions

This study uncovers three facets of macroinvertebrate beta diversity with different latitudinal patterns, highlighting the disparate influences played by climate and land use on these spatial differences as well as the distinct importance of processes causing nestedness and turnover. These insights provide a foundation for latitude-specific conservation strategies that aim at preserving the macroinvertebrate diversity in rivers.

气候变化和土地利用对大型无脊椎动物的生物多样性有重大影响，但它们如何形成空间变化，特别是在大尺度上，目前尚不清楚。本研究探讨了河流大型无脊椎动物群落beta多样性的纬度格局，并考察了气候和土地利用对它们的影响。地理位置中国（北纬18°-48°）。时间段从2006年到2021年。河流大型无脊椎动物的主要分类群研究。方法利用中国42个流域大型无脊椎动物类群的数据，探讨其分类、功能和系统发育β多样性的纬度格局，包括周转率和巢性成分。从20个气候变量和10个土地利用候选变量中选择气候和土地利用变量，利用广义加性模型评估了气候和土地利用变量对β多样性纬度格局的影响。结果在24°-30°N范围内，系统发育β多样性呈单调性增长，而分类多样性和功能多样性呈非单调性分布。分类多样性受气候稳定性和土地利用的双重调节：随着纬度的增加，低纬度地区巢性减少，高纬度地区空间周转增加。对于功能β多样性，气候被认为是影响历史性状池约束的间接因素，而土地利用被认为是改变其筑巢性成分的直接因素。系统发育多样性与当代环境变量无显著关联。本研究揭示了大型无脊椎动物β多样性在不同纬度格局下的三个方面，突出了气候和土地利用对这些空间差异的不同影响，以及筑巢和更替过程的不同重要性。这些见解为旨在保护河流中大型无脊椎动物多样性的特定纬度保护策略提供了基础。

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引用次数: 0

Two Decades of Community Responses Reveal a Consistent Increase in Species Occurrences in South-Eastern Pacific Rocky Shores 二十年来的群落反应揭示了东南太平洋岩石海岸物种发生的持续增加

IF 6 1区环境科学与生态学 Q1 ECOLOGY

Global Ecology and Biogeography

Pub Date : 2025-12-04 DOI: 10.1111/geb.70176

Mauricio H. Oróstica, Paulina A. Arancibia, Otso Ovaskainen, Sergio A. Navarrete, Bernardo R. Broitman

<div> <section> <h3> Aim</h3> <p>Understanding how diverse communities respond to environmental fluctuations is a central challenge in ecology. Here, we assessed how communities responded to environmental variation over the past 23 years and evaluated the extent to which these responses can be associated with taxonomic relationships, as well as biological and ecological species traits.</p> </section> <section> <h3> Location</h3> <p>Central portion of the Humboldt Upwelling Ecosystem, with 22 rocky shore survey sites spanning 8° of latitude (28° S–36° S).</p> </section> <section> <h3> Time Period</h3> <p>2000–2023.</p> </section> <section> <h3> Major Taxa Studied</h3> <p>Intertidal zone communities.</p> </section> <section> <h3> Methods</h3> <p>We used joint species distribution models to integrate quantitative survey data, satellite sea surface temperature (SST) as a proxy for environmental conditions, taxonomic information and species biological traits along a latitudinal gradient with heterogeneous thermal conditions.</p> </section> <section> <h3> Results</h3> <p>Our proxy for environmental variation revealed weak and non-significant SST cooling at central sites, whereas sites near 30° S showed slight warming trends. Taxonomic relationships and individual species traits were weakly associated with their collective responses to SST variability. However, we identified a consistent increase in the occurrence of both macroalgal and invertebrate species across the region. The occurrence of macroalgal species was more sensitive to SST variation than invertebrates, with responses shifting from positive at equatorward sites to increasingly negative at poleward sites. Patterns of species co-occurrence were strongly dependent on spatial scale, particularly among invertebrates.</p> </section> <section> <h3> Main Conclusions</h3> <p>Species occurrences increased across the region, but these responses were not significantly associated with taxonomic relatedness or with easily assigned species traits. This pattern likely indicates comparatively low niche conservatism within these communities in relation to SST responses, while other structuring processes—such as species interactions—are not well captured by the traits examined. As other studies have detected slight cooling trends over the past two decades, our results suggest that the lack of community-wide reorganisation reflects the absence of a clear

目的了解不同的群落如何对环境波动作出反应是生态学的一个核心挑战。在这里，我们评估了群落在过去23年中对环境变化的响应，并评估了这些响应与分类关系以及生物和生态物种特征的关联程度。洪堡上升流生态系统的中心部分，有22个岩石海岸调查点，跨越8°纬度（28°S - 36°S）。时间范围2000-2023。潮间带群落的主要分类群。方法采用联合物种分布模型，将定量调查数据、卫星海表温度（SST）代表的环境条件、分类信息和物种生物学性状沿非均匀热条件的纬度梯度进行整合。结果表明，中心站点的海温变冷较弱且不显著，而30°S附近的站点则有轻微的变暖趋势。分类关系和单个物种性状与它们对海表温度变异的集体响应呈弱相关。然而，我们发现整个地区的大型藻类和无脊椎动物物种的出现都在持续增加。与无脊椎动物相比，大藻物种的发生对海温变化更为敏感，从赤道的正响应向极地的负响应转变。物种共现模式强烈依赖于空间尺度，特别是在无脊椎动物中。主要结论：该地区的物种发生率呈上升趋势，但与物种间的亲缘关系和易分配的物种特征关系不显著。这种模式可能表明这些群落中相对较低的生态位保守性与海温响应有关，而其他结构过程（如物种相互作用）没有被研究的性状很好地捕获。正如其他研究在过去二十年中发现的轻微冷却趋势一样，我们的研究结果表明，缺乏全社区的重组反映了缺乏明确的环境驱动因素。

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引用次数: 0

Dispersal, Climate Anomaly and Contemporary Climate Shape the Latitudinal Patterns of β-Diversity of Angiosperm Trees 散布、气候异常和当代气候影响了被子植物β-多样性的纬向格局

IF 6 1区环境科学与生态学 Q1 ECOLOGY

Global Ecology and Biogeography

Pub Date : 2025-12-03 DOI: 10.1111/geb.70178

Liqi Lu, Jie Li, Fushan Cheng, Jingyuan He, Minhui Hao, Chunyu Fan, Chunyu Zhang, Klaus von Gadow, Xiuhai Zhao

<div> <section> <h3> Aim</h3> <p>The underlying drivers of latitudinal gradients in multifaceted β-diversity remain debated. The primary focus on abiotic drivers of β-diversity has left dispersal processes insufficiently explored. This study presents a multiscale analysis of how dispersal, Quaternary climate and contemporary environmental conditions influence multifaceted β-diversity and its decomposition components in a large temperate forest.</p> </section> <section> <h3> Location</h3> <p>Northeast China.</p> </section> <section> <h3> Time Period</h3> <p>2017.</p> </section> <section> <h3> Major Taxa Studied</h3> <p>Angiosperm trees.</p> </section> <section> <h3> Methods</h3> <p>We constructed metacommunities by aggregating multiple sets of local plots to assess taxonomic, functional and phylogenetic β-diversity across spatial scales. β-diversity was then partitioned into species replacement and richness difference. Using a community dispersal capacity metric (DCMc), we first evaluated its abiotic drivers and then applied variance partitioning to disentangle the relative contributions of dispersal and environmental filtering to latitudinal patterns of β-diversity. Spatial simultaneous autoregressive models and structural equation models were then employed to estimate the direct and indirect effects of DCMc and abiotic factors on β-diversity and its components.</p> </section> <section> <h3> Results</h3> <p>Environmental filtering emerged as the dominant mechanism of community assembly across scales, whereas dispersal gained importance at broader scales, primarily through spatial and historical structures. We found that DCMc itself represents a legacy of Quaternary climate change. After accounting for abiotic factors, high DCMc values increased richness differences but reduced replacement, while contemporary climate continued to dominate across scales. Interestingly, DCMc had no significant effect on total β-diversity, whereas temperature anomaly indirectly shaped β-diversity by influencing DCMc.</p> </section> <section> <h3> Main Conclusions</h3> <p>Dispersal plays a secondary but significant role relative to environmental filtering in shaping the three facets of β-diversity, particularly through its mediation of Quaternary climate legacies. Our f

多层面的β多样性的纬度梯度的潜在驱动因素仍然存在争议。主要关注β-多样性的非生物驱动因素，导致对扩散过程的探索不足。本研究对大型温带森林中扩散、第四纪气候和当代环境条件对β多样性及其分解组分的影响进行了多尺度分析。

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引用次数: 0

Effects of Nitrogen Deposition, Biodiversity and Climate on Productivity in a Large Temperate Forest Region 氮沉降、生物多样性和气候对温带大林区生产力的影响

IF 6 1区环境科学与生态学 Q1 ECOLOGY

Global Ecology and Biogeography

Pub Date : 2025-12-02 DOI: 10.1111/geb.70173

Jie Li, Senxuan Lin, Minuid Hao, Chunyu Fan, Juan Wang, Klaus von Gadow, Chunyu Zhang, Xiuhai Zhao

Aim

Nitrogen deposition is a widespread global change driver that significantly affects terrestrial ecosystems. However, evidence on the specific mechanisms of productivity response to nitrogen deposition in temperate forests across ecological and climatic gradients is scarce. This study evaluates the effects of nitrogen deposition, multiple attributes of biodiversity and climate on productivity in a large temperate forest region.

Location

North-eastern China.

Time Period

2017.

Major Taxa Studied

Woody plants.

Methods

We assessed taxonomic, functional, and phylogenetic attributes of tree diversity and functional identity of forest communities across a wide range of ecological and climatic conditions. Using partial linear mixed models (LMMs), multivariate LMMs, and structural equation modelling, we investigated the effects and pathways of nitrogen deposition, biodiversity, and climate conditions on productivity. We also explored the relationship between nitrogen deposition and productivity across biotic and climatic gradients.

Results

Our results show that nitrogen deposition, phylogenetic diversity (PD), and the community-weighted mean of maximum tree height (CWMHM) are significant positive drivers of productivity. Climate conditions primarily affected productivity indirectly through PD. In species-poor high-latitude forests characterised by cold and dry climates, nitrogen deposition had strong positive effects on productivity. That effect weakened towards warmer climatic conditions.

Main Conclusions

The findings of this study suggest that the response of productivity to nitrogen deposition depends on local ecological and climatic conditions. Our results underscore the importance of considering interactions among multiple global change drivers to improve the accuracy of ecosystem response predictions.

目的氮沉降是一种广泛存在的全球变化驱动因素，对陆地生态系统产生重大影响。然而，关于温带森林生产力对氮沉降响应的具体机制，在生态和气候梯度上的证据很少。本研究评估了氮沉降、生物多样性多属性和气候对温带大型林区生产力的影响。地理位置：中国东北。2017年。主要分类群研究木本植物。方法对不同生态和气候条件下森林群落的树木多样性和功能特性进行分类、功能和系统发育分析。利用部分线性混合模型、多元线性混合模型和结构方程模型，研究了氮沉降、生物多样性和气候条件对生产力的影响及其途径。我们还探讨了氮沉降与生物和气候梯度之间的关系。结果氮沉降、系统发育多样性（PD）和群落加权平均最大树高（CWMHM）是生产力的显著正驱动因子。气候条件主要通过PD间接影响生产力。在以寒冷和干燥气候为特征的物种贫乏的高纬度森林中，氮沉降对生产力有很强的积极影响。随着气候条件变暖，这种影响减弱了。本研究结果表明，生产力对氮沉降的响应取决于当地的生态和气候条件。我们的研究结果强调了考虑多个全球变化驱动因素之间的相互作用对于提高生态系统响应预测的准确性的重要性。

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引用次数: 0