Journal of Biogeography最新文献

{"title":"From Native Habitats to Invasion Frontiers: Understanding Spatial Niches of Invasive Plants Through Functional Traits","authors":"Ping He,&nbsp;Renping Jiang,&nbsp;Wenwen Liu,&nbsp;Jingke Ye,&nbsp;Guangxiong Huang,&nbsp;Hao Wu,&nbsp;Yihui Zhang","doi":"10.1111/jbi.15145","DOIUrl":"https://doi.org/10.1111/jbi.15145","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Aim</h3>\u0000 \u0000 <p>Functional traits that affect plant performance and adaptation strategies are critical for shaping the distribution of invasive plants under global change. However, quantitative assessments of functional traits on spatial niche predictions are still lacking. In this study, we aimed to understand how functional traits alter the distribution of invasive plants across native and introduced ranges.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Location</h3>\u0000 \u0000 <p>Eastern USA (66-106W, 24-47N); Eastern China (104-125E, 18-43N).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Taxon</h3>\u0000 \u0000 <p><i>Spartina alterniflora</i> Loisel.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>We developed a new integrated framework using structural equations and ecological niche models to determine the causal relationships among plant functional traits in the field, presence distribution data, and environmental variables. This framework was used to predict the latitudinal distribution and spatial dynamics of <i>Spartina alterniflora</i> Loisel across its native (USA) and introduced (China) ranges.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>We found that functional traits were variable and remarkably altered the distribution of <i>S. alterniflora</i>, especially in mid- and low-latitudes of China. Furthermore, leaf, vegetative, and sexual reproductive traits had different effects on the distribution of <i>S. alterniflora</i>, with approximately −2% to 15% and 10% to 40% of the distribution areas influenced by functional traits in the native and introduced ranges, respectively. Notably, sexual reproductive traits affected plant distribution more than leaf and vegetative traits. Additionally, hump-shaped relationships were observed between habitat suitability and most of the functional traits, thus demonstrating that moderately suitable areas had better plant performance.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Main Conclusions</h3>\u0000 \u0000 <p>These findings suggest that plant functional traits influence the prediction of species distribution and thus need to be accounted for when performing niche modelling of invasive species. Furthermore, we suggest that global change may threaten the habitat in the native range but will improve the spatial niche of species in the introduced range. This study highlights the focus areas for conservation and prevention efforts.</p>\u0000 </section>\u0000 </div>","PeriodicalId":15299,"journal":{"name":"Journal of Biogeography","volume":"52 7","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"How Vulnerable Are Plants to Land-Use and Climate Changes? Comparing Current and Future Distributions at the Regional Scale According to Native and Red List Statuses","authors":"Arthur Sanguet,&nbsp;Nicolas Wyler,&nbsp;Blaise Petitpierre,&nbsp;Pascal Martin,&nbsp;Michelle Price,&nbsp;Antoine Adde,&nbsp;Anthony Lehmann","doi":"10.1111/jbi.15132","DOIUrl":"https://doi.org/10.1111/jbi.15132","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Aim</h3>\u0000 \u0000 <p>Future species distributions were modelled to assess the distributional changes of 1692 plant species according to several scenarios. Species vulnerability was calculated according to their red list and native statuses using a new index to better understand the most vulnerable groups of species to future conditions and improve conservation actions.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Location</h3>\u0000 \u0000 <p>Greater Geneva region between France and Switzerland.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Time Period</h3>\u0000 \u0000 <p>From present to 2050.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Major Taxa Studied</h3>\u0000 \u0000 <p>A total of 1692 species of plants from all major groups.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Two different species distribution models were created to combine the effect of climate change at the continental scale and land-use changes at the regional scale in 2050. Two scenarios of climate change were used (optimistic and pessimistic) and one business-as-usual land-use–land-cover scenario. Current and future distributions were compared using six spatial indicators combined to create a new vulnerability index to global changes.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>More than one-third of all species assessed showed at least a moderate vulnerability, and more than 10% showed a high vulnerability to global changes, mostly composed of native species. Most exotic species showed moderate benefits to global changes, and one-third were associated with high benefits. Pessimistic scenarios of climate change exacerbated the trends identified under optimistic scenarios and were associated with higher vulnerability for native species and higher benefits for exotic ones. No clear pattern was found when comparing species vulnerability according to their red list status, questioning its ability to preserve species in the long term.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Main Conclusions</h3>\u0000 \u0000 <p>Native species are more vulnerable to global changes, while exotic species benefit from them. Climate is the main driver of future distributional changes in the study area. Current levels of threat fail to inform us of species vulnerability to future conditions, questioning their relevance and supporting the assessments of similar studies to identify the most vulnerable species.</p>\u0000 </section>\u0000 </div>","PeriodicalId":15299,"journal":{"name":"Journal of Biogeography","volume":"52 7","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Speciation Rates of Freshwater Fish Across the Americas Vary With Environmental Heterogeneity and Dispersal Ability","authors":"David Griffiths","doi":"10.1111/jbi.15133","DOIUrl":"https://doi.org/10.1111/jbi.15133","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Aims</h3>\u0000 \u0000 <p>Species richnesses show marked spatial trends, but the contribution of speciation rates (SpecRates) to these trends is less clear. The roles of environmental heterogeneity (topography and climate), glaciation, dispersal ability, times to colonise, and to speciate to large-scale variation in SpecRates of freshwater fish faunas are assessed.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Location</h3>\u0000 \u0000 <p>Atlantic and Pacific coast drainages in North, Central, and South America.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Taxon</h3>\u0000 \u0000 <p>Fish.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Published information was compiled on SpecRates, phylogenies, colonisation times, species geographic distributions, and migratory behaviour of fishes in 582 catchments. The effects of topographic and climatic factors, including glaciation and vagility, on three speciation rate metrics were examined using boosted regression tree models.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Mean SpecRates differ five-fold across drainage regions and with glaciation. Pacific coast drainage SpecRates are highest in the Nearctic and decline southwards, but in Atlantic drainages, rate trends differ between Nearctic and Neotropical basins. Assemblage SpecRates vary with the percentage of migratory species, glaciation, environmental heterogeneity, colonisation time, and species age. High Nearctic rates are associated with postglacial recolonisation by rapidly speciating diadromous species, but rates in the Neotropics for resident and potamodromous species are higher than for diadromous species. Species dispersing into an area are more migratory, occur further north, and have wider distributions than species diversifying in situ. Endemicity in the more recently colonised Nearctic increases with colonisation time to Neotropical levels.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Main Conclusions</h3>\u0000 \u0000 <p>Spatial and temporal variation in topography and climate generate differences in connectivity which, coupled with differences in species abilities to overcome these barriers, result in differences in speciation rates in different areas.</p>\u0000 </section>\u0000 </div>","PeriodicalId":15299,"journal":{"name":"Journal of Biogeography","volume":"52 7","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Landcover Modulates the Responses of Bird Communities to a Steep Geoclimatic Gradient","authors":"Eli Haviv,&nbsp;Ido Izhaki,&nbsp;Avi Bar-Massada","doi":"10.1111/jbi.15146","DOIUrl":"https://doi.org/10.1111/jbi.15146","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Aim</h3>\u0000 \u0000 <p>Environmental gradients are key drivers of geographic variation in biodiversity, but their interactive effects with landcover are unclear. We tested the hypothesis that landcover can modulate the effect of environmental gradients on species abundance, richness, uniqueness, and spatial turnover and assessed if the shape of this modulation is additive, synergistic, or antagonistic.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Location</h3>\u0000 \u0000 <p>Jordan Rift Valley.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Taxon</h3>\u0000 \u0000 <p>Birds.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>We sampled bird communities in Winter, Spring, and Late Spring along a ~70 km stretch of the Jordan Rift Valley, which spans a strong rainfall gradient. We used GLMs and multivariate analyses to quantify the effect of biotic and abiotic variables on bird abundance, richness, compositional uniqueness, and turnover and to test if a transition from the Jordan Floodplain to the adjacent Jordan Plain can modulate the effect of the rainfall gradient on these metrics.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Bird abundance and richness were significantly higher along the Jordan Floodplain compared to the Jordan Plain, though sites in the latter contributed significantly more to regional beta-diversity. The effect of landcover on the response of species abundance, richness, and uniqueness to the rainfall gradient varied across sampling seasons and among community metrics, but we found no evidence of modulation. In contrast, we found moderate to high rates of bird species turnover along the rainfall gradient, with turnover rates exhibiting a consistently monotonic linear trend. Absolute turnover rates were consistently higher along the dry Jordan Plain compared to the mesic Jordan Floodplain, suggesting an additive modulation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Main Conclusions</h3>\u0000 \u0000 <p>Local landcover can additively modulate the effect of a climatic gradient on bird species turnover. In water-limited environments, this effect may be driven by a perceived shortening of the climatic gradient along mesic habitats because their microclimatic conditions are more consistent across space, and they provide thermal refugia from the steep rainfall gradient in the surrounding landscape.</p>\u0000 </section>\u0000 </div>","PeriodicalId":15299,"journal":{"name":"Journal of Biogeography","volume":"52 7","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jbi.15146","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Genomic Footprints of Ancient Multi-Species Introgression Events Among Allopatric Australo-Papuan Butcherbird Species","authors":"Anna M. Kearns,&nbsp;Heather Johnston,&nbsp;Jessica Fenker,&nbsp;James Nicholls,&nbsp;Claire Yang,&nbsp;Andreas Zwick,&nbsp;Bulisa Iova,&nbsp;Ian J. Mason,&nbsp;Alex Drew,&nbsp;Leo Joseph","doi":"10.1111/jbi.15141","DOIUrl":"https://doi.org/10.1111/jbi.15141","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;Climate change has influenced the evolution of the world's biota, shaping species distributions, promoting diversification and causing extinctions. The turbulent climatic oscillations of the Pleistocene, which caused repeated periods of isolation and secondary contact, have left lasting signatures on the genomes of species across the world. The resultant reticulate histories are difficult to untangle, yet offer unique insights, capturing responses to climate change that would otherwise be undetected and providing empirical case-studies of the impact of introgression tens of thousands of years later. Here, we explore such dynamics using three currently allopatric species of Australian butcherbirds. We specifically test long-standing biogeographic hypotheses concerning the role of intermittent Pleistocene land-bridges and climatic oscillations in facilitating secondary contact.&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;Australia and New Guinea.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Taxon&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Silver-backed Butcherbird &lt;i&gt;Cracticus argenteus&lt;/i&gt;, Black-backed Butcherbird &lt;i&gt;Cracticus mentalis&lt;/i&gt; and Grey Butcherbird &lt;i&gt;Cracticus torquatus&lt;/i&gt; (Passeriformes: Artamidae).&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 generated genomic data from museum specimens to infer species relationships, test taxonomic boundaries and elucidate the history of gene flow in this species complex.&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;We uncovered genomic evidence of multiple ancient introgressions into savannah-adapted &lt;i&gt;C. argenteus&lt;/i&gt; from both savannah-adapted &lt;i&gt;C. mentalis&lt;/i&gt; and more arid-tolerant &lt;i&gt;C. torquatus&lt;/i&gt; despite their current allopatry. This supports biogeographic hypotheses concerning both the role of the Arafura Shelf in maintaining genetic connectivity between savannah-adapted species in Australia and New Guinea and the expansion of aridity during glacial maxima in promoting range expansions in arid-tolerant species.&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;Our data showcase how genomic signatures retained over generations can reveal unexpected insights about evolutionary history, as well as expand our understanding of how guilds of similarly adapted species may have responded concordantly to paleoclimate change. These insights have important implications for biodiversity conservation, ","PeriodicalId":15299,"journal":{"name":"Journal of Biogeography","volume":"52 7","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jbi.15141","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"European Breeding Bird Declines Associated With Narrower Climatic Niches","authors":"Karolina Zalewska,&nbsp;James J. Gilroy,&nbsp;Inês Catry,&nbsp;Philip W. Atkinson,&nbsp;Alena Klvaňová,&nbsp;Aldina M. A. Franco","doi":"10.1111/jbi.15127","DOIUrl":"https://doi.org/10.1111/jbi.15127","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Aim</h3>\u0000 \u0000 <p>Anthropogenic climate change has increasingly been identified as a major threat to global biodiversity. However, the extent of this threat is likely to be uneven across species, due to differences in life histories or exposure to environmental change. The range of climatic conditions a species experiences across its range extent, known as the realised climatic niche, may be an indicator of species resilience to climate change. Species with large range extents, occurring across diverse climatic conditions, are expected to be less affected by climate change due to lower physiological constraints and tolerance to a wider range of climates. However, this may not be the case if local populations are adapted to specific environmental conditions. In this study, we investigate whether the extent of the species' realised climatic niche, also known as the climatic niche breadth, is linked to their long-term population trends.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Location</h3>\u0000 \u0000 <p>Europe.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Taxon</h3>\u0000 \u0000 <p>Birds.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>We extract climate data across the breeding-only and resident ranges of 159 European bird species and use an ordination method to produce a representation of the species climatic niches. We then relate the niche breadth of each species to their range area and incorporate this relationship, along with the species' diet, main habitat type, migratory status and average body mass, to investigate their relationship with the species long-term population trend.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Species with small range areas showed larger variation in climatic niche breadth than species with larger ranges. For species with similar range areas, those with broader climatic tolerance were less likely to be declining than those with narrow climatic niches.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Main Conclusions</h3>\u0000 \u0000 <p>These findings can help us understand the threats associated with climate change and allow for rapid assessment of the importance of climatic factors on population trends, providing an invaluable tool for targeting habitat conservation.</p>\u0000 </section>\u0000 </div>","PeriodicalId":15299,"journal":{"name":"Journal of Biogeography","volume":"52 7","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jbi.15127","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Habitat and Migration Dynamics of North American Tree Species Under Climate Change","authors":"Anantha Prasad,&nbsp;Matthew Peters,&nbsp;John Pedlar,&nbsp;Andrew Gougherty,&nbsp;Daniel McKenney,&nbsp;Franz Mora,&nbsp;Steve Matthews,&nbsp;Steve McNulty,&nbsp;Lauro López-Mata","doi":"10.1111/jbi.15138","DOIUrl":"https://doi.org/10.1111/jbi.15138","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Aim</h3>\u0000 \u0000 <p>We model and map the climatically suitable habitats and migration potential of 326 tree species by combining forest inventories of the United States, Canada and to a lesser extent, Mexico, with the goal of providing a continental perspective of species ranges and migration potential to facilitate better forest stewardship under a changing climate.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Location</h3>\u0000 \u0000 <p>United States, Canada, and Mexico.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Major Taxa Studied</h3>\u0000 \u0000 <p>Tree species.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>We use a multi-model ensemble technique to assess climatic habitat suitability under current and future climates, and a migration model to compute colonisation likelihoods to simulate end of century tree species migration. We combine and synthesise these outputs to provide various products relevant to range-wide assessment of tree species.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>For 326 tree species, we provide maps of: current habitat suitability, future habitat suitability under SSP2-4.5 and SSP5-8.5 scenarios, and combined habitat suitability and colonisation likelihoods for the end of the current century. In addition, we provide synthesis outputs of (a) climate and topographic statistical range assessments, (b) maps of potential differences in species richness from current to future climates, (c) assessment of model performance, (d) climate-topographic variable-importance groupings and (e) climatic disequilibrium trends across genera.</p>\u0000 \u0000 <p>A continent-wide assessment of both individual and combined species responses showed evidence of climatic disequilibrium for species with smaller ranges, a projected potential reduction in species richness in the middle and lower mid-continental regions, and an increase across the southeastern, northeastern, and northwestern regions of the continent. Also, we found habitat suitability of most eastern species were mainly driven by moisture, while western species showed strong associations with heat and moisture.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Main Conclusions</h3>\u0000 \u0000 <p>Our study provides, for the first time, a baseline for understanding the overall continental dynamics of shifting climatic habitats and migration potential of tree species across their entire range, facilitating improved management of North American forested ecosystems.</p>\u0000 </section>\u0000 </div>","PeriodicalId":15299,"journal":{"name":"Journal of Biogeography","volume":"52 7","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geographical Gradient of Fungal Decay Type in Norway Spruce Logs in Europe and Its Impact on Seedling Establishment","authors":"Yu Fukasawa,&nbsp;Olga Orman,&nbsp;Václav Pouska,&nbsp;Radek Bače,&nbsp;Momchil Panayotov,&nbsp;Nickolay Tsvetanov,&nbsp;Lucie Zíbarová,&nbsp;Jenni Nordén,&nbsp;Yuki Kawasaki,&nbsp;Martin Mikoláš,&nbsp;Elias Polemis,&nbsp;Kamil Král,&nbsp;Tomáš Přívětivý,&nbsp;Miroslav Svoboda","doi":"10.1111/jbi.15135","DOIUrl":"https://doi.org/10.1111/jbi.15135","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Aim</h3>\u0000 \u0000 <p>Norway spruce (<i>Picea abies</i>) is a dominant tree species across Eurasia, and is known to regenerate on decaying logs. Understanding its regeneration dynamics is crucial for predicting forest sustainability under climate change. The decay type of the logs, indicative of fungal decay capabilities of lignin and holocellulose and traditionally categorised into white rot and brown rot, markedly influences spruce seedling density on the logs, because brown rot reduces their establishment. As fungal distribution and wood decay types are affected by macroclimate, the success of spruce seedling establishment is expected to vary continentally and may be further influenced by climate change. The goal of the present study is to examine the relationship between decay type frequencies and spruce seedling densities on decaying logs, assessing effects on regeneration success along a climatic gradient.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Location</h3>\u0000 \u0000 <p>Fifteen sites in six European countries.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Taxa</h3>\u0000 \u0000 <p>Norway spruce (<i>Picea abies</i> [L.] H. Karst.).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>We collected wood samples from spruce logs naturally decaying in the forest to evaluate their decay types. Spruce seedling numbers were recorded on the logs. The occurrence of certain decay types, seedling density, and their relationships with climate, stand, and log variables were analysed using generalised linear mixed models (GLMM) and structural equation modelling (SEM).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>White rot type of decay was dominating in central Europe compared with southern and northern Europe, where brown rot was prevalent. Spruce seedling densities were positively correlated with white rot in heartwood, which was explained by high precipitation seasonality in central Europe.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Main Conclusions</h3>\u0000 \u0000 <p>Spruce seedling regeneration on decaying logs may be indirectly affected by climate through its influence on fungal-mediated wood decomposition. Despite predictions of northward shifts in Norway spruce distribution due to climate change, slower regeneration rates on brown rot logs may limit northern expansion, potentially leading to a contraction of the species' range.</p>\u0000 </section>\u0000 </div>","PeriodicalId":15299,"journal":{"name":"Journal of Biogeography","volume":"52 7","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jbi.15135","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144309135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Patterns and Drivers of Phylogenetic Beta Diversity in the Forests and Savannas of Africa","authors":"Mathew Rees,&nbsp;Adeline Fayolle,&nbsp;John L. Godlee,&nbsp;Anais P. Gorel,&nbsp;David J. Harris,&nbsp;Kyle G. Dexter","doi":"10.1111/jbi.15140","DOIUrl":"https://doi.org/10.1111/jbi.15140","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;Studying beta diversity, or the variation in species composition among communities, can give insights into plant community assembly over space and time. If different biomes show contrasting large-scale beta-diversity patterns, this can indicate divergent evolutionary histories or ecological processes that then drive species turnover among communities. Here, we examine phylogenetic beta-diversity patterns across Africa in forest and savanna assemblages, the two most widespread tropical biomes on the continent. We hypothesise that savannas will show lower phylogenetic beta diversity due to their younger evolutionary history.&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;Tropical Africa.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Taxon&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Woody angiosperms.&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 gathered 301,159 occurrences of woody angiosperms representing 1883 forest species and 1302 savanna species. We compared levels of phylogenetic beta diversity between forest and savanna assemblages, analysed spatial patterns of phylogenetic beta diversity using 1° grid cells and modelled their relationship with climate, disturbance and geographical distance.&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;We found that savannas show greater relative regional phylogenetic beta diversity, whereas forest assemblages show greater relative local phylogenetic beta diversity. The spatial distribution of beta diversity showed strong East–West patterns for both forests and savannas, aligned with a major floristic discontinuity associated with the Albertine rift. Our results also highlighted West Africa as showing a high amount of compositional change for both biomes, arranged along an aridity gradient. Variance partitioning showed that predictors linked to precipitation were the main drivers of compositional change for both forests and savannas, but the importance of individual predictors was different in each biome.&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;Contrary to our expectations, our results indicate that savannas may have a deeper and richer evolutionary history than suggested by previous studies and that individual regions of both forest and savanna have high conservation value. Finally, our results demonstrate that environmental filtering is the dominant force influencing the assembly of these two important biom","PeriodicalId":15299,"journal":{"name":"Journal of Biogeography","volume":"52 7","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jbi.15140","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Global Free-Living Symbiodiniaceae Biodiversity Mirrors Local Environments","authors":"Sydney L. Bell,&nbsp;Kate M. Quigley","doi":"10.1111/jbi.15137","DOIUrl":"https://doi.org/10.1111/jbi.15137","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Aim</h3>\u0000 \u0000 <p>For free-living Symbiodiniaceae, we aim to synthesise current knowledge, identify gaps in our understanding of biogeography and conduct the first quantitative genetic analysis of biogeography at a global scale.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Location</h3>\u0000 \u0000 <p>Global.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Taxon</h3>\u0000 \u0000 <p>Free-living dinoflagellates of the Family Symbiodiniaceae.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Publicly available sequences were used to characterise the free-living Symbiodiniaceae community in the environment. Using the genetic ITS2 marker combined with the <i>DADA2</i> pipeline, amplicon sequence variants (ASVs) were used to assess Symbiodiniaceae diversity, abundance and distribution patterns from local to global scales.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Relative abundances, community composition and sequence diversity differed significantly between the wider Caribbean and Indo-Pacific, within the Indo-Pacific, and across our three study regions: Great Barrier Reef (GBR), Flower Garden Banks National Marine Sanctuary (FGBNMS) and Moorea in French Polynesia. Symbiodiniaceae community assemblage was most different between the GBR and FGBNMS, with a dominance of <i>Cladocopium</i> in the GBR and <i>Breviolum</i> in FGBNMS. There was also significant variability within these regions, as shown through a beta dispersion test. The highest diversity indices were found in the GBR, followed by Moorea and FGBNMS.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Main Conclusions</h3>\u0000 \u0000 <p>We found free-living Symbiodiniaceae biogeography differed significantly between and within locations at the global scale. Importantly, these global patterns in diversity mirrored local-scale patterns. These free-living biogeographical patterns also followed <i>in hospite</i> symbiont community patterns. With most studies of free-living diversity from the Indo-Pacific, we highlight the need for expanded sampling efforts in unexplored regions such as the Indian Ocean. Given the potentially significant role of free-living Symbiodiniaceae in coral acclimation to climate change, identifying and protecting these taxa should be a conservation priority.</p>\u0000 </section>\u0000 </div>","PeriodicalId":15299,"journal":{"name":"Journal of Biogeography","volume":"52 7","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jbi.15137","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144309133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}