Basic and Applied Ecology最新文献

{"title":"Limited immediate effect of artificial light of realistic intensity on flight behaviour of commuting pond bat (Myotis dasycneme)","authors":"Claire Hermans ,&nbsp;Laura Kijm ,&nbsp;Marieke Paardekooper ,&nbsp;Jens C. Koblitz ,&nbsp;Peter Stilz ,&nbsp;Anne-Jifke Haarsma ,&nbsp;Marcel E. Visser ,&nbsp;Kamiel Spoelstra","doi":"10.1016/j.baae.2025.05.007","DOIUrl":"10.1016/j.baae.2025.05.007","url":null,"abstract":"<div><div>Artificial light at night can act as a barrier and cause habitat fragmentation, especially for bat species that are generally considered to be light-averse. Bats use linear structures to commute from their roost to their foraging areas. Trawling bats such as the pond bat (<em>Myotis dasycneme</em>) forage predominantly above water bodies and use waterways as commuting routes. Artificial light along these potentially leads to interruptions of commuting routes, or changes in flight behaviour of trawling bats, but impact of light may vary with light spectrum and intensity. Here, we tested whether pond bats change their flight speed and straightness in response to four light spectra at two light intensities by placing an experimental lamp post at bridges over waterways that are used by pond bats as commuting routes. We used a microphone array to precisely reconstruct the flight path of each passing bat and calculate flight parameters. Flight speed of commuting pond bats was unaffected by the presence of light, regardless of the light spectrum. Pond bats only fly straighter when exposed to white light (3000 K). The short presence of a lamp post with realistic light intensity on a bridge may therefore not act as a barrier. However, other direct effects cannot be excluded and the long-term presence of a similar light installation may still have impact.</div></div>","PeriodicalId":8708,"journal":{"name":"Basic and Applied Ecology","volume":"87 ","pages":"Pages 20-28"},"PeriodicalIF":3.0,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243328","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":"Anthropogenic noise can decrease tomato reproductive success by hindering bumblebee-mediated pollination","authors":"Zsófia Varga-Szilay ,&nbsp;Gergely Szövényi ,&nbsp;Gábor Pozsgai","doi":"10.1016/j.baae.2025.05.008","DOIUrl":"10.1016/j.baae.2025.05.008","url":null,"abstract":"<div><div>Anthropogenic noise is a little-studied type of pollution that negatively affects the physiology, nervous function and development of insects. Thereby, it has the potential to disrupt even key ecological services such as pollination. Here, we investigate the effects of anthropogenic noise on the pollination success of tomatoes pollinated by <em>Bombus terrestris,</em> under controlled conditions. We hypothesised that bumblebees avoid flowers exposed to noise more than flowers in non-noisy environments, leading to less efficient pollination and lower fruit quality. Three treatments were applied to randomly chosen plants and flowers in polytunnels in Hungary: noisy (with played traffic noise and allowing bumblebees to access the flowers); and two non-noisy, one allowing bumblebees and one excluding them. The flowers were bagged with nets before anthesis to prevent bumblebee visits, opened/unbagged exclusively during treatment, and re-bagged for three more days post-treatment. We recorded the market value of the fruits and the number of seeds they produced. We found no significant differences in the market value of fruits among treatments, but the number of seeds was significantly lower in the noisy treatment, suggesting that anthropogenic noise has substantial effects on bumblebee-mediated pollination. Although these effects may be mitigated by habituation, loud external noise of various machines (e.g. irrigation systems) within polytunnels is still likely to contribute to the everyday noise exposure of bumblebees and could thus potentially lead to hidden economic losses in production. Therefore, further research is needed to understand the behavioural effects of both direct and indirect noise pollution on bumblebees.</div></div>","PeriodicalId":8708,"journal":{"name":"Basic and Applied Ecology","volume":"87 ","pages":"Pages 11-19"},"PeriodicalIF":3.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144223583","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":"Temporal stability of agricultural land-use effects on morphological traits and abundance in bumblebees and syrphid flies","authors":"Markus Birkenbach ,&nbsp;Florian Straub ,&nbsp;Nico Blüthgen ,&nbsp;Jonas Kuppler ,&nbsp;Lena Wilfert ,&nbsp;Manfred Ayasse","doi":"10.1016/j.baae.2025.05.005","DOIUrl":"10.1016/j.baae.2025.05.005","url":null,"abstract":"<div><div>Pollinator populations are globally declining due to environmental and anthropogenic stressors, especially in agricultural areas. Land-use intensification and its consequences can shape both abundance and functional traits in pollinators, which may reduce pollination, and thus threaten ecosystem functioning. This study investigates temporal stability of land-use and climatic effects on morphological traits and abundance of the bumblebee <em>Bombus lapidarius</em> and the syrphid fly <em>Episyrphus balteatus</em> in agricultural grasslands. As responses, we measured body size and asymmetry using wing centroid sizes of specimen sampled in the years 2008, 2012 and 2020 and assessed the relative abundance of the two species. By using a variety of environmental variables on local and landscape-scale, reflecting land-use intensity and floral resource availability for pollinators, we were interested in the individual effects of the stressors, but particularly whether the effects are stable across the three sampling years. The body size of bumblebees decreased with local land-use intensity and increased with local availability of floral resources. In contrast the body size of syrphid flies decreased with landscape-level land-use and strongly depended on temperature. Bumblebee abundance declined with local land-use intensity, while syrphid flies were more abundant on plots with higher local land-use. The effects of most land-use stressors on both pollinator morphology and abundance showed consistent patterns across the three sampling years, except for local land-use and climatic factors, which showed significant interactive effects with the sampling year on the morphology of both species. Our results indicate that land-use effects on pollinators are stable over time and demonstrate that pollinators may be under persistent pressure of land-use in agricultural areas.</div></div>","PeriodicalId":8708,"journal":{"name":"Basic and Applied Ecology","volume":"87 ","pages":"Pages 38-45"},"PeriodicalIF":3.0,"publicationDate":"2025-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144297018","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":"Trait-mediated insect colonization of newly established grassland strips in agricultural landscapes","authors":"Maria Peer ,&nbsp;Sophie Kratschmer ,&nbsp;Raja Imran Hussain ,&nbsp;Manuela Bürgler ,&nbsp;Bea Maas ,&nbsp;Dominik Rabl ,&nbsp;Ronnie Walcher ,&nbsp;Tobias Schernhammer ,&nbsp;Norbert Schuller ,&nbsp;Nora Vogel ,&nbsp;Matthias Heer ,&nbsp;Simon Zwatz ,&nbsp;Bernhard Krautzer ,&nbsp;Dietmar Moser ,&nbsp;Thomas Frank","doi":"10.1016/j.baae.2025.05.006","DOIUrl":"10.1016/j.baae.2025.05.006","url":null,"abstract":"<div><div>Restoring grasslands in agroecosystems through the establishment of grassland and flowering strips has been demonstrated to promote insects. However, the development of the functional composition of insect assemblages in newly established grassland, which determine how species contribute to key ecosystem processes such as pollination, nutrient cycling, and pest control, are less understood. We applied a trait-based approach to investigate the functional insect richness of newly established grassland strips (NG) compared to adjacent permanent, semi-natural “old” grasslands (OG) over a six-year time span in an agricultural landscape in Austria. Specifically, our study focused on identifying species-specific traits that differentiate the assemblages of wild bees, syrphids, butterflies, orthopterans and heteropteran bugs in OG and NG. Our results show that compared to OG, insects in NG were more likely to be more mobile (butterflies, orthopterans, heteropteran bugs), less likely to be zoophagous (syrphids, orthopterans, heteropteran bugs), less likely to be feeding specialized (wild bees, orthopterans, heteropteran bugs) and less likely to be wood associated (butterflies). Investigating the temporal development of traits, our study reveals a shift in the abundance of zoophagous syrphids and mobile orthopterans following the establishment of NG: while we found lower numbers of zoophagous syrphids and mobile orthopterans in the first three years after the establishment of NG, this was no longer the case after five years.</div><div>Our study suggests that although plant-diverse new grassland strips may exhibit equal taxonomic richness as permanent grasslands if created near the latter, they promote different functional compositions, even six years after establishment. Due to the lower initial occurrence of zoophagous insects following grassland establishment compared to permanent grassland, benefits for pest control could be delayed.</div></div>","PeriodicalId":8708,"journal":{"name":"Basic and Applied Ecology","volume":"87 ","pages":"Pages 1-10"},"PeriodicalIF":3.0,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144223582","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":"Disentangling the effects of geographical location and local climate on masting in Fagus crenata using a comprehensive population model","authors":"Takashi Masaki ,&nbsp;Kazuhiko Hoshizaki ,&nbsp;Chinatsu Homma","doi":"10.1016/j.baae.2025.05.004","DOIUrl":"10.1016/j.baae.2025.05.004","url":null,"abstract":"<div><div>Masting, the intermittent and highly temporally variable production of seed crops, is exhibited by many plant genera, including <em>Fagus</em>. Although patterns of masting have been investigated over a wide range of areas, very few studies have comprehensively examined the various related factors. First, we developed a new comprehensive population-level process model of seed production and tested its ability to reproduce interannual variation in <em>Fagus crenata</em> seed production at a test site for which detailed quantitative flower and seed production data were available. Second, to explore hypotheses for the mechanisms of spatial variation in masting in <em>Fagus</em> and disentangle the effects of geographical and climate variables, we fitted coarse qualitative data (seeding rank) for a 20-year period for 102 populations of <em>Fagus crenata</em> across 550 km in northern Japan to the process model above, encompassing variable average climate conditions and latitudinal genetic divergence. We found good agreement between observed and predicted numbers of flowers and seeds at the test site. A simulation demonstrated that the process model reproduced the observed masting pattern well. Fitting data for the 102 sites allowed us to develop new hypotheses. The indicator of the effect of higher summer temperatures as a weather cue for masting decreased with latitude, possibly reflecting latitude-associated genetic divergence. The indicator of the evasion of insect predation was positively correlated with winter precipitation, possibly due to poor survival of the primary seed predator of <em>F. crenata</em> in heavy-snowfall areas. These hypotheses related to spatial variation in masting patterns should be tested in future studies. The proposed process model will be useful for forecasting climate-change impacts on masting patterns in <em>Fagus</em> and other genera, improving the efficacy of forest ecosystem management.</div></div>","PeriodicalId":8708,"journal":{"name":"Basic and Applied Ecology","volume":"87 ","pages":"Pages 74-82"},"PeriodicalIF":3.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144480453","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":"Short-term mating success in relation to fluctuating wing asymmetry in the male azure damselfly Coenagrion puella","authors":"Ken M. Mauser ,&nbsp;Jann Baumeyer ,&nbsp;Shahab Eshghi ,&nbsp;Stanislav N. Gorb ,&nbsp;Alessandro Manfrin ,&nbsp;Carsten A. Brühl","doi":"10.1016/j.baae.2025.05.002","DOIUrl":"10.1016/j.baae.2025.05.002","url":null,"abstract":"<div><div>As top flying predators, damselflies rely on wing symmetry and functionality. However, already during aquatic larval development, environmental stressors, including anthropogenic ones, can affect their development and impair wing morphology raising the question whether such alterations affect reproductive fitness. To investigate the role of wing morphology in mating success, we collected males of <em>Coenagrion puella</em> observed in copulation wheels (indicating short-term mating success) or actively chasing other wheel or tandem formations (unsuccessful mating attempts at the time of capture). Twenty individuals of each group were collected at two locations differing in environmental and anthropogenic pressures: one regularly used for recreational fishing and surrounded by agriculture in the Rhine Valley and one consisting of research ponds in the Palatinate Forest with restricted public access. Wing morphology and symmetry were assessed via computer-vision by comparing several cell shape and position dependent variables as well as wing size and number of cells and junctions using the recently developed software WingAnalogy. Mating males in the Palatinate Forest exhibited higher cell shape asymmetry than mating males in the Rhine Valley. In these individuals, the cell shape asymmetry was more pronounced in the distal part of the wing than in the proximal part. Mating males had lower body weight (-5%) and smaller wings (-3%) compared to chasing males at both locations. Our results challenge the general theory that stress-induced lower body weight and higher asymmetry diminish short-term mating success. Instead, they underscore the ecological importance of population-specific factors, like female availability or male-male competition, and environmental conditions that shape mating dynamics. Our results suggest that anthropogenic stressors in aquatic habitats have implications for terrestrial food webs by affecting the reproductive interactions of adult amphibiotic top predators, such as damselflies. This highlights the need to consider cross-ecosystem carry-over effects in ecological monitoring and conservation strategies.</div></div>","PeriodicalId":8708,"journal":{"name":"Basic and Applied Ecology","volume":"86 ","pages":"Pages 55-65"},"PeriodicalIF":3.0,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071519","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":"Recent biodiversity changes in grasslands across elevational bands in Switzerland","authors":"Kathrin E.R. Häberlin ,&nbsp;Jürgen Dengler","doi":"10.1016/j.baae.2025.05.003","DOIUrl":"10.1016/j.baae.2025.05.003","url":null,"abstract":"<div><div>Concerns about intensification of land use and land abandonment threatening plant diversity called for the establishment of national monitoring and agri-environmental payment schemes in Switzerland. Yet, little is known about recent biodiversity changes in Swiss grasslands. The analyses in this study were based on the presence / absence records of 455 permanent 10 m² plots in grasslands systematically spread across elevational bands in Switzerland, collected by the Swiss Biodiversity Monitoring BDM. We assessed changes in vascular plant species richness, mean ecological indicator values and species composition at the local scale in Swiss grasslands over two decades (2001–2023) and for three elevational sets (all, below, and above 1200 m a.s.l.). Further, we identified winners and losers at the species level. Throughout all three elevational sets, we found that the mean species richness increased in the study period. Likewise, the mean ecological indicator values for temperature increased throughout. While the mean ecological indicator values of nutrient, soil moisture and reaction remained constant for the set of all plots, at lower elevations there was a trend towards a decreased nutrient value whereas soil moisture decreased at higher elevations. Overall, more species showed positive rather than negative trends over time. Especially at lower elevations, short-lived, ruderal species and C₄ grasses are on the increase. We suggest that these trends are linked to the increased harvesting frequency and the recent trend towards longer dry spells in Swiss summer. By contrast, at higher elevations, stress tolerance of grasslands decreased while competitiveness increased. These diverging patterns point to different drivers of biodiversity change dependent on elevation and call for context-dependent conservation measures.</div></div>","PeriodicalId":8708,"journal":{"name":"Basic and Applied Ecology","volume":"87 ","pages":"Pages 29-37"},"PeriodicalIF":3.0,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144271759","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":"Ecological assessment of forest management approaches to develop resilient forests in the face of global change in Central Europe","authors":"Franka Huth ,&nbsp;Alexander Tischer ,&nbsp;Petia Nikolova ,&nbsp;Heike Feldhaar ,&nbsp;Alexandra Wehnert ,&nbsp;Lisa Hülsmann ,&nbsp;Jürgen Bauhus ,&nbsp;Katrin Heer ,&nbsp;Juliane Vogt ,&nbsp;Christian Ammer ,&nbsp;Uta Berger ,&nbsp;Markus Bernhardt-Römermann ,&nbsp;Manuela Böhme ,&nbsp;Harald Bugmann ,&nbsp;Jörn Buse ,&nbsp;Laura Demant ,&nbsp;Inken Dörfler ,&nbsp;Jörg Ewald ,&nbsp;Eike Feldmann ,&nbsp;Andreas Fichtner ,&nbsp;Bernhard Schuldt","doi":"10.1016/j.baae.2025.05.001","DOIUrl":"10.1016/j.baae.2025.05.001","url":null,"abstract":"<div><div>The effects of global change pose major challenges for both practical forest management and forest ecological research if European forests are to be managed in such a way that they can continue to provide their many services to people in the future. The number of studies on impacts of global change on forest ecosystems has increased enormously over the last decade, but the evidence on how to improve the resilience and resistance of forests is of varying quality and in some cases contradictory. For that reason a group of experts from the Ecological Society of Germany, Austria and Switzerland (GfOe), Section Forest Ecology decided to review the relevant scientific information and to assess its degree of confidence to provide guidance for future forest adaption options. Our review of research on the impact of global change on European forests and associated forest management strategies to adapt forests identified 35 scientific statements that were grouped into the following thematic priorities: (1) selection of tree species and promoting diversity, (2) genetics, (3) forest structures, (4) forest functions, ecosystem services and nature’s contribution to the lives of people, (5) silvicultural systems, (6) natural regeneration, successional processes and wildlife management, and (7) future research and monitoring methods. Our analyses showed that most of the statements reflect validated research findings. However, many of them were incomplete and would not yet allow transfer to broad application in the form of silvicultural adaptation strategies. Future studies should focus on the identification of climate-resilient tree species and provenances, their regeneration processes and their resistance to pathogens and pests under drought conditions. Species- and site-specific scientific findings must be translated into silvicultural techniques/measures such as the determination of tree species mixtures, thinning and harvesting intensities and tree regeneration methods. We identified significant gaps in the application of forest monitoring practices needed to obtain reliable information on the provision of ecosystem goods and services. This review provides a comprehensive basis to develop a roadmap for future forest adaptation research to improve our level of confidence for science-based management recommendations.</div></div>","PeriodicalId":8708,"journal":{"name":"Basic and Applied Ecology","volume":"86 ","pages":"Pages 66-100"},"PeriodicalIF":3.0,"publicationDate":"2025-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071838","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":"Farmland bird decline is associated with a strong population limitation of open-habitat species","authors":"Jiří Reif ,&nbsp;Tomáš Telenský ,&nbsp;Petr Klvaňa ,&nbsp;Jaroslav Cepák ,&nbsp;David Storch","doi":"10.1016/j.baae.2025.03.010","DOIUrl":"10.1016/j.baae.2025.03.010","url":null,"abstract":"<div><div>Farmland birds rank among organisms showing the steepest declines of their European populations. To combat these declines, it is essential to understand demographic mechanisms underlying the negative population trends. For this purpose, we employ a novel modelling approach on a long-term multispecies dataset collected by citizen scientists throughout Czechia. Using this approach, we calculated recruitment, adult survival and population growth rates for 13 farmland bird species on annual basis from 2004 to 2021, and related these demographic rates to species population trends estimated over the same period, as well as to their habitat preferences. We observed a negative relationship between recruitment and adult survival within most species. This relationship becomes increasingly more negative in species breeding in more open habitats. These species also showed steeper population declines and less positive correlation between adult survival and population growth rate than species breeding more woody habitats. These results indicate that the open-habitat farmland birds face strong population regulation. Under such regulation, higher adult survival in some years, that may occur due to, for instance, suitable weather conditions, does not leave much capacity for new recruits, and thus is immediately compensated by low recruitment. We suggest that these demographic processes are underpinned by decreasing carrying capacity of the open habitats which may occur due to shrub encroachment or afforestation of agricultural land that are widespread in Europe. At the same time, species preferring woody habitats enjoy increasing habitat availability in farmland which may lead to population increases over the long-term. Our results indicate that conservation actions are needed to improve the carrying capacity of the open habitats, especially during the breeding season. For example, some initiatives aiming for mitigation of climate change impacts by afforestation should be carefully reconsidered to avoid adverse impacts on open habitat species.</div></div>","PeriodicalId":8708,"journal":{"name":"Basic and Applied Ecology","volume":"86 ","pages":"Pages 45-54"},"PeriodicalIF":3.0,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931942","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":"Bacterial community structure in bulk soil and rhizosphere of alpine plants exhibits opposite longitudinal patterns","authors":"Yixuan Liu ,&nbsp;Hao Zhou ,&nbsp;Guoqi Xu ,&nbsp;Qiudi Zhang ,&nbsp;Xing Liu","doi":"10.1016/j.baae.2025.04.008","DOIUrl":"10.1016/j.baae.2025.04.008","url":null,"abstract":"<div><div>Soil bacteria play a key role in determining vegetation dynamics and ecosystem functions in natural grasslands, and can change along biogeographic gradients due to the sensitivity to abiotic and biotic factors. However, it remains unclear whether there are differences in longitudinal patterns and main drivers of bacterial community structure between bulk soil and rhizosphere, especially in alpine grassland ecosystems. In this study, we characterized bacterial communities in rhizosphere of alpine plants (28 species) and bulk soil at 13 sites of three alpine grassland types along the longitudinal gradient (from 82.5°E to 93.8°E) in China. Our results showed that climate and soil properties (e.g. mean annual precipitation, soil pH, and organic matter content), as well as bacterial taxonomic diversity in these two soil origins, changed along the longitudinal gradient. Total OTUs richness, Shannon index, and generalist richness of bacterial communities in the bulk soil increased along longitude, apparently due to the higher organic matter content and lower available potassium content. On the contrary, Shannon index in the rhizosphere decreased along longitude and was not related with any environmental factor. The dissimilarity in bacterial communities between paired samples was positively related with the differences in longitude and environmental factors (mean annual precipitation and soil pH in particular) for the two soil origins. There was a positive relationship between bacterial community dissimilarity among rhizosphere samples and the phylogenetic distance of co-occurring plant species in the individual sites of different alpine grassland types, suggesting phylogenetic conversation in plant-bacteria interactions under field conditions. Our findings suggest that the differential responses of bacterial communities in the rhizosphere versus bulk soil to abiotic and biotic factors may underlie their opposite longitudinal patterns, which highlights the necessity of integrating biogeographic and phylogenetic approaches in exploring plant-soil bacterial associations.</div></div>","PeriodicalId":8708,"journal":{"name":"Basic and Applied Ecology","volume":"86 ","pages":"Pages 11-20"},"PeriodicalIF":3.0,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891591","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}