Journal of Biogeography最新文献

{"title":"Oligocene Odyssey: Molecular Phylogenetic Analyses Describe the Origin and Diversification of Freshwater Gammarus in Eastern North America","authors":"Andrew G. Cannizzaro, David J. Berg","doi":"10.1111/jbi.15081","DOIUrl":"https://doi.org/10.1111/jbi.15081","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Aim</h3>\u0000 \u0000 <p>Members of the amphipod genus <i>Gammarus</i> have served as an excellent model for testing biogeographic hypotheses given the number of species within the genus and its unique history, with multiple taxa transitioning from marine to freshwater environments independently. However, while attention has been placed on Palearctic <i>Gammarus</i>, little is known about members in the Nearctic. Given trends observed within the genus, <i>Gammarus</i> from eastern North America (ENA) may represent another independent lineage, likely reaching the continent using a heretofore unknown pathway. We investigate the phylogenetic and evolutionary history of <i>Gammarus</i> spp. in this region.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Location</h3>\u0000 \u0000 <p>Eastern North America.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Taxon</h3>\u0000 \u0000 <p>\u0000 <i>Gammarus.</i>\u0000 </p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Sequence data for two nuclear and two mitochondrial loci were obtained for 75 individuals, four of which are newly sequenced. Based on a partitioned dataset, phylogenetic trees were reconstructed using both maximum likelihood and Bayesian inference. Bayesian trees were time-calibrated based on a set of five mixed calibration points. RASP software was used to investigate potential ancestral areas.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>ENA <i>Gammarus</i> spp. were recovered as monophyletic, showing affinity to both Palearctic <i>Gammarus</i> and <i>G. duebeni</i>. Newly generated sequences solidify the position of <i>Gammarus bousfieldi</i>, which is found to be related to <i>G. minus</i>. Time-calibrated phylogenies place the crown age of the ENA lineage during the Eocene/Oligocene. These timings suggest a marine origin for the lineage followed by dispersal into freshwaters.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Main Conclusions</h3>\u0000 \u0000 <p>Members of the “ENA <i>Gammarus</i>” are a unique lineage within the genus, originating from a marine ancestor during the Eocene/Oligocene and colonising the Nearctic shortly after. The exact route the lineage may have taken is unclear; however, three routes are proposed: (i) the Gulf of St. Lawrence, (ii) the Chesapeake Bay, and (iii) the Mississippi River. Results generated here emphasise the lineages' unique evolutionary history, highlighting novel colonisation pathways not often considered for i","PeriodicalId":15299,"journal":{"name":"Journal of Biogeography","volume":"52 4","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jbi.15081","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612406","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":"Three-Dimensional Morphometrics Reveal Patterns of Unionid Shell Variation Along River Gradients","authors":"Irene Sánchez González,&nbsp;Jamie R. Bucholz,&nbsp;Garrett W. Hopper,&nbsp;Jeffrey D. Lozier,&nbsp;Carla L. Atkinson","doi":"10.1111/jbi.15084","DOIUrl":"https://doi.org/10.1111/jbi.15084","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Aim</h3>\u0000 \u0000 <p>Understanding the extent of morphological variation across diverse habitats and species can provide valuable insights into how organisms respond to environmental gradients. We quantified intraspecific morphological variation of unionid mussels and assessed how it varied in relation to genetic differentiation and environmental characteristics.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Location</h3>\u0000 \u0000 <p>Mobile and Tennessee River Basins, Alabama and Tennessee, U.S.A.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Taxon</h3>\u0000 \u0000 <p>Unionid mussels.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>We used innovative three-dimensional (3D) scanning techniques and 3D geometric morphometric analyses, genetic data and environmental variables to quantify morphological variation in seven freshwater mussel species populations and its relationship to genetic differentiation and environmental characteristics.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Our findings indicate that shell morphological variation is correlated with environmental variables in four unionid species, and generally not related to genetic differentiation, improving our understanding of the mechanisms behind morphological variation. Three closely related species were more inflated in larger watersheds, while a more distantly related species, <i>A. plicata</i>, was more compressed in larger watersheds. River bankfull width was a significant factor in all models, highlighting the influence of high flow extremes on shell morphological variation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Main Conclusions</h3>\u0000 \u0000 <p>Our findings suggest that environmental factors, particularly characteristics of river flow regimes, are the primary drivers of intraspecific shell morphological variation in unionid mussels, with genetic differentiation playing a less prominent role. Continuing to explore intraspecific trait variation along river gradients will improve our understanding of the ecological implications of shell morphological variation. Assessing the ability of organisms to morphologically adapt to environmental change can help us understand their resilience.</p>\u0000 </section>\u0000 </div>","PeriodicalId":15299,"journal":{"name":"Journal of Biogeography","volume":"52 4","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612351","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":"Energy Availability and Spatial Effect Determine the Multi-Scale Distributional Patterns of Multi-Dimensional Diversity of Amphibians in China","authors":"Ziyan Liao,&nbsp;Wenyan Zhang,&nbsp;Zeguang Guo,&nbsp;Qian Qian,&nbsp;Yuxiao He,&nbsp;Qi Xiao,&nbsp;Na Wu,&nbsp;Xiaoqin Shi,&nbsp;Zhidong Liu,&nbsp;Liwen Liang,&nbsp;Huizhong Fan,&nbsp;Youhua Chen","doi":"10.1111/jbi.15085","DOIUrl":"https://doi.org/10.1111/jbi.15085","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Aim</h3>\u0000 \u0000 <p>This work focused on the multi-scale distributional patterns of multi-dimensional diversity among different groups of amphibians in China and systematically investigated the underlying environmental driving mechanisms by evaluating the performance of multiple ecological hypotheses.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Location</h3>\u0000 \u0000 <p>China.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Taxon</h3>\u0000 \u0000 <p>Amphibians.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>We examined the effects of different spatial scales on the distribution patterns of taxonomic, functional and phylogenetic diversity of amphibians. Additionally, we assessed the relative importance of eight hypotheses in explaining these multi-scale diversity patterns using hierarchical partitioning.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The spatial distributional patterns of amphibian taxonomic, functional and phylogenetic diversity exhibited scale dependency. Generally, the explanatory powers of hypotheses-related covariates increased with larger spatial grain sizes. Across eight spatial grains (ranging from 0.25 to 2 arc-degree), energy availability and spatial effect emerged as principal determinants for different amphibian groups in China. This was consistent for all species (469 species), as well as endemic, threatened and both endemic and threatened species.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Main Conclusion</h3>\u0000 \u0000 <p>Multi-group biodiversity patterns are characterised by multi-dimensional components and exhibit multi-scale dependency. Our study highlights the significant influences of spatial scale on biodiversity pattern and on the explanatory power of ecological hypotheses. These findings provide valuable insights for future conservation planning of amphibians in China.</p>\u0000 </section>\u0000 </div>","PeriodicalId":15299,"journal":{"name":"Journal of Biogeography","volume":"52 4","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612352","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":"Rampant Dispersal Without Gene-Flow: Reproductively and Geographically Isolated Lineages of the Supertramp Lizard Lamprolepis smaragdina Permeate the Lesser Sunda Archipelago","authors":"Sean B. Reilly,&nbsp;Hinrich Kaiser,&nbsp;Benjamin R. Karin,&nbsp;Umilaela Arifin,&nbsp;Alexander L. Stubbs,&nbsp;Evy Arida,&nbsp;Amir Hamidy,&nbsp;Djoko T. Iskandar,&nbsp;Jimmy A. McGuire","doi":"10.1111/jbi.15087","DOIUrl":"https://doi.org/10.1111/jbi.15087","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;We investigated the biogeographical patterns of a widespread arboreal lizard found throughout Wallacea and the western Pacific islands. Wallacea contains longstanding oceanic currents that flow from the Pacific Ocean into the Indian Ocean, known as the Indonesian Throughflow. Using genetic data, we aim to estimate the timing and sequence of island colonisation in the Lesser Sunda archipelago of southern Wallacea, and to determine the proportion of dispersal events that may have been aided by ocean currents. Levels of gene flow are also explored in the context of island arrangement, past connectivity (ex. Pleistocene land bridges), and ocean currents.&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;Southern Wallacea (Indonesia, Timor-Leste).&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;Emerald Tree Skink (&lt;i&gt;Lamprolepis smaragdina&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 estimated a mitochondrial DNA phylogeny from southern Wallacean populations to identify divergent populations and to guide sample selection for genomic-scale data collection. These genomic data were used to estimate (1) phylogenetic relationships of island populations using both concatenated Maximum Likelihood, summary coalescent and multispecies coalescent methods, (2) levels of genetic connectivity between lineages using genetic clustering and migration analyses, and (3) to reconstruct their dispersal history using ancestral range reconstruction analysis.&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 the Emerald Tree Skinks of southern Wallacea diverged from a population on Peleng Island ~1.25 Ma and that Lesser Sunda populations diverged between ~1 and 0.4 Ma. MtDNA data are insufficient to estimate the relationships of each population and find one island to be paraphyletic and two to be polyphyletic. Genomic data find that Timor Island is polyphyletic while all other islands are recovered as monophyletic. Gene flow is minimal or absent across the archipelago, even between islands that become periodically land bridged. More than half of the estimated over-water dispersal events occurred perpendicular to or against ocean currents.&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;Despite this species' over-water dispersal abilities island populations are genetically isolated from one another, even on adjacent islands ","PeriodicalId":15299,"journal":{"name":"Journal of Biogeography","volume":"52 4","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jbi.15087","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612405","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":"Unveiling the Role of Spatial Functional Trait Variations on Grassland Primary Productivity at France Scale","authors":"Sara Chebbo,&nbsp;Cyrille Violle,&nbsp;Lucie Mahaut,&nbsp;Jens Kattge,&nbsp;Marc Peaucelle,&nbsp;Philippe Choler,&nbsp;Nicolas Viovy","doi":"10.1111/jbi.15079","DOIUrl":"https://doi.org/10.1111/jbi.15079","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;Land surface models (LSMs) currently represent each plant functional type (PFT) as an average phenotype, characterised by a set of fixed parameters. This rigid and constant representation is a limit in understanding the dynamics of highly diverse ecosystems, such as permanent grasslands, and their response to global 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;France.&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;2001–2019.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Major Taxa&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Grassland plant species.&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 incorporated spatially explicit trait variability at the France scale in the ORCHIDEE land surface model to assess how the net primary productivity (NPP) will spatially vary over the years. More precisely, we focused on three key functional traits that govern the NPP of grassland ecosystems: specific leaf area (SLA) and leaf nitrogen content (LNC), as measured traits, and leaf lifespan (LLS) as an estimated trait. Community-weighted means (CWM) were implemented in various combinations with prescribed and spatially varying traits. We compared the outcomes of each NPP simulation to remotely sensed proxies of productivity by using the MODIS satellite-driven NPP products.&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;The sensitivity of NPP to traits depends on climate conditions, such as temperature and water limitation. Considering trait variability decreases the NPP in the most productive regions (plains) and increases the NPP in the less productive regions (mountains) compared to the case with constant trait values. This leads to a more homogenous NPP across France. Compared to the observed MODIS NPP and FLUXCOM GPP, the simulation using varying traits improves the spatial NPP and GPP variations in several regions and most climate conditions.&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;Based on the existing trait data, we revealed that incorporating the CWM of traits in an LSM such as ORCHIDEE can be effectively performed. Improving the modelling and predictions by considering the relationships between biodiversity, functional biogeography, and ecosystem functioning is essential in current and future ecological research.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 ","PeriodicalId":15299,"journal":{"name":"Journal of Biogeography","volume":"52 4","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jbi.15079","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612378","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":"Predicting Suitable Areas for Cold-Water Scleractinian Corals in Southwestern Australian Submarine Canyons","authors":"F. Di Giovanna,&nbsp;G. Castellan,&nbsp;M. L. Vitelletti,&nbsp;M. Taviani,&nbsp;F. Foglini,&nbsp;M. T. McCulloch,&nbsp;P. Montagna,&nbsp;J. A. Trotter","doi":"10.1111/jbi.15080","DOIUrl":"https://doi.org/10.1111/jbi.15080","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;The exploration of submarine canyons offshore southwestern Australia using remotely operated vehicles (ROV) has documented the occurrence of cold-water coral (CWC) ecosystems, predominantly along the heads and slopes of the canyons. Representing the first major ROV investigation in this region, information on CWC distribution in this area is still limited. Here we apply a habitat suitability model (HSM) to identify the potential distribution of scleractinian CWC habitats in these submarine canyon systems. We show that the integration of environmental and geomorphological variables allows the HSM to identify key conditions favourable for the occurrence of scleractinian CWC in this region.&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;Southwestern Australian submarine canyons: Bremer canyon system (BCS), Mount Gabi seamount and Leeuwin Canyon and Perth Canyon.&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;Cold-water corals in the Order Scleractinia.&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;High-resolution maximum entropy model (Maxent) was developed using remote sensing variables and geomorphological indices derived from bathymetry. Scleractinian CWC occurrences were obtained from videos acquired by ROV onboard RV Falkor during the Schmidt Ocean Institute cruise FK200126. The model identified portions of the seafloor most suitable for scleractinian CWC habitat in the SW Australian submarine canyons.&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;Modelling predicted over 27.2 km&lt;sup&gt;2&lt;/sup&gt; of suitable habitat for scleractinian CWC (suitability index &gt; 0.6), representing only ~0.254% of the total surface area of the submarine canyon systems explored. Dissolved oxygen resulted as the most relevant factor, followed by terrain ruggedness, slope and bottom temperature, confirming their importance for CWC distribution. The most suitable locations were in canyon heads, slopes and geomorphological features emerging from the bottom along the continental shelf.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Main Conclusion&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Our integrated approach identified potential scleractinian habitats using a combination of remote sensing and geomorphological data. The high performance of the model suggests that remote sensing data are valuable predictors to estimate scleractinian CWC distribution.&lt;/p&gt;\u0000 \u0000 &lt;p&gt;The re","PeriodicalId":15299,"journal":{"name":"Journal of Biogeography","volume":"52 4","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jbi.15080","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612398","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":"Bridging the Gap Between Lagrangian and Eulerian Species Distribution Models for Abundance Estimation—A Simulation Experiment","authors":"Charlotte Lambert,&nbsp;Anne-Sophie Bonnet-Lebrun,&nbsp;David Grémillet","doi":"10.1111/jbi.15078","DOIUrl":"https://doi.org/10.1111/jbi.15078","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;In mobile species, individual movement decisions based on biotic and abiotic conditions determine how individuals interact with the environment, heterospecifics and conspecifics. Accordingly, these decisions underpin all ecological principles and structure broader spatial patterns at the population and species level. Species distribution models (SDMs) are therefore paramount in ecology, with implications for both fundamental and applied studies. There are many robust SDM techniques, from individual-scale (Lagrangian) to population-scale (Eulerian) models. Their outputs routinely support wildlife management, conservation, or risk assessments. Yet, it remains unclear whether SDMs built at individual and population scales infer the same processes, and whether the spatial distributions they predict are comparable. Here, we address this key question with a simulation exercise.&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;Virtual environment.&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;Virtual species.&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;First, we simulated the individual movements of two highly mobile species, one central-place forager and one free ranger. Second, we surveyed the species at the individual-scale, replicating Lagrangian studies by tracking individual movements, and at the population-scale, replicating Eulerian surveys by censusing the study area with standardised protocols. The resulting data were analysed following well-established statistical methods to assess species abundance distribution. We used Resource Selection Functions (RSFs) for Lagrangian data and Density Surface Models (DSMs) for Eulerian data.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Results and Main Conclusions&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Both Lagrangian and Eulerian SDMs adequately estimated the species' relationship with environmental conditions. Although some fine-scale differences occurred, both perspectives yielded highly correlated spatial distributions (correlations of 0.8–1.0 between pairs of models), and successfully predicted true abundance distributions (correlations of 0.6–0.7 with the true abundance distribution). Our results demonstrate that Lagrangian and Eulerian SDMs are statistically consistent and directly comparable, which is of great importance for conservation science. This provides crucial guidance for the combination of predictions from both model types to inform spatial planning within a wide range of management contexts.&lt;/p&gt;\u0000 ","PeriodicalId":15299,"journal":{"name":"Journal of Biogeography","volume":"52 4","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jbi.15078","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612379","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":"The Continuity-Contiguity Problem in Fragmentation-Biodiversity Research","authors":"M. Dennis,&nbsp;J. J. Huck","doi":"10.1111/jbi.15077","DOIUrl":"https://doi.org/10.1111/jbi.15077","url":null,"abstract":"<p>A primary question for researchers in the field of conservation science concerns the fragmentation of biodiversity-supporting habitat. Key debates revolve around the relevance of habitat composition and configuration for conservation outcomes. Central to this debate is the measurement and delineation of the habitat patch, which informs fragmentation-related metrics and their evaluation. Despite the need to quantify and model habitat fragmentation, the habitat patch concept itself has been subject to criticism concerning its ability to adequately reflect the heterogeneity of resource distributions in complex landscapes. In this paper, we present the continuity-contiguity problem, which is one of the fundamental challenges related to the delineation of habitat in space, and discuss its implications for fragmentation-biodiversity research. We outline the potential contribution of recent developments in spatial-ecological methods and the leveraging of uncertainty in the modelling process to address four common issues related to the habitat patch concept: the gap-crossing problem, the need for multi-variate habitat delineation, the delineation of interior-edge transitions and the need to parameterise habitat as both a discrete and continuous spatial entity. We conclude with several recommendations for studies on fragmentation-biodiversity outcomes where the continuity-contiguity problem may influence the research process.</p>","PeriodicalId":15299,"journal":{"name":"Journal of Biogeography","volume":"52 4","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jbi.15077","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612374","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":"Climate-Driven Vegetation Characteristics Shape Phytophagous and Carnivorous Insect Diversity in South African Savannahs","authors":"Fernando P. Gaona,&nbsp;Sylvain Delabye,&nbsp;Pavel Potocký,&nbsp;Valeriy Govorov,&nbsp;Jan Čuda,&nbsp;Llewellyn C. Foxcroft,&nbsp;Rafał Garlacz,&nbsp;Martin Hejda,&nbsp;Sandra MacFadyen,&nbsp;Tomasz Pyrcz,&nbsp;Klára Pyšková,&nbsp;Ondřej Sedláček,&nbsp;David Storch,&nbsp;Petr Pyšek,&nbsp;Robert Tropek","doi":"10.1111/jbi.15076","DOIUrl":"https://doi.org/10.1111/jbi.15076","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Aim</h3>\u0000 \u0000 <p>Despite the evidenced importance of insects in savannah ecosystems, the drivers of their diversity patterns remain poorly understood, particularly in the Afrotropical region. This study addresses part of this gap by investigating the effects of climate, habitat, disturbance and vegetation variables on species richness and community composition of phytophagous and predatory insects in South African savannahs.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Location</h3>\u0000 \u0000 <p>Kruger National Park (KNP), South Africa.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Taxon</h3>\u0000 \u0000 <p>Phytophagous insects (moths) and carnivorous insects (mantises).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Moths and mantises were light-trapped in 60 plots distributed across KNP during two seasons. Direct and indirect effects of environmental variables on insect species richness were analysed using structural equation models, and on community composition through distance-based redundancy analyses (db-RDA).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Based on an extensive dataset of 65,593 moth individuals representing 817 species and 3511 mantis individuals representing 38 species, we identified plant communities as the primary driver of species richness and community structure for both insect groups. The effects of vegetation on insect communities were indirectly shaped by climate, particularly mean temperature (negatively correlated with precipitation), through its effects on plant species richness. Additionally, a complex interplay among bedrock type, water availability and disturbance from large herbivores further shaped insect diversity.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Main Conclusions</h3>\u0000 \u0000 <p>Our findings highlight the critical role of plant species richness in determining insect diversity patterns in savannah ecosystems. We also confirmed the region's vulnerability to climate change, as decreasing precipitation and increasing temperatures alter vegetation composition and biomass, consequently affecting insect communities. Effective conservation strategies should focus on managing large herbivores to maintain diverse vegetation, which is crucial for supporting insect diversity. Priority should be given to balancing water availability and disturbance intensity, particularly in preserving the health of rivers and their surroundings, to mitigate the adverse effects of climate change on these ecosystems.</p>\u0000 </section>\u0000 </div>","PeriodicalId":15299,"journal":{"name":"Journal of Biogeography","volume":"52 4","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612422","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":"Landscape Effects on Local Species Richness of Woody Specialists in Subtropical Montane Cloud Forest of Taiwan","authors":"Yu-Pei Tseng,&nbsp;David Zelený,&nbsp;Chang-Fu Hsieh","doi":"10.1111/jbi.15074","DOIUrl":"https://doi.org/10.1111/jbi.15074","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Aim</h3>\u0000 \u0000 <p>How is the local species richness of woody specialists in vegetation plots located within subtropical montane cloud forests (SMCFs) affected by the landscape structure of the surrounding SMCF habitat patch?</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Location</h3>\u0000 \u0000 <p>Subtropical montane cloud forests in Taiwan.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Taxon</h3>\u0000 \u0000 <p>Woody species specialised in growing in foggy conditions.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>We used plant occurrence data from major herbaria together with fog frequency data to identify fog specialists of SMCFs in Taiwan. Subsequently, we extracted 20 × 20 m forest vegetation plots from the National Vegetation Database of Taiwan and calculated the richness of woody specialists in each of them. Using a published predicted SMCFs distribution map, we estimated the landscape context of SMCFs around each vegetation plot within circular buffer zones of increasing radius. The variables of landscape structure include those related to the area of SMCFs habitat (area and connectivity), surrounding heterogeneity (topographical heterogeneity and vegetation diversity) and edge effect (the nearest distance from the plot to the edge and the edge length). The multiple linear regression model was used to investigate which of the three mechanisms of landscape context has the strongest effect on the local richness of fog specialists.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Only the area of SMCFs habitat patch shows a significant positive effect on the local species richness of woody specialists in the plot when considering all the landscape variables. Area <i>per se</i> might be a possible mechanism that supports this positive species-area relationship. Additionally, the area of SMCFs patch is highly correlated with connectivity, indicating that larger SMCF patches enhance connectivity beyond buffer zones, sustaining species through the rescue effect from the regional species pool.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Main Conclusions</h3>\u0000 \u0000 <p>Patch size and connectivity are crucial for the species richness of woody specialists in SMCFs in Taiwan. For conservation, we recommend protecting larger, less fragmented SMCF patches to maintain biodiversity.</p>\u0000 </section>\u0000 </div>","PeriodicalId":15299,"journal":{"name":"Journal of Biogeography","volume":"52 4","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612407","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}