Oecologia最新文献_第5页

Risk of predation increases susceptibility to parasitism via trait-mediated indirect effects. 被捕食的风险通过性状介导的间接效应增加了对寄生的易感性。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-05-06 DOI: 10.1007/s00442-025-05722-3

Colin D MacLeod, Lien T Luong

{"title":"Risk of predation increases susceptibility to parasitism via trait-mediated indirect effects.","authors":"Colin D MacLeod, Lien T Luong","doi":"10.1007/s00442-025-05722-3","DOIUrl":"10.1007/s00442-025-05722-3","url":null,"abstract":"The presence of natural enemies can cause organisms to change habitat use, foraging behavior, and/or resource allocation in response to a perceived risk, responses that may come at the cost of other fitness-related traits. Since most species encounter multiple natural enemies in nature, defensive behaviors against one attacker may make the focal organism more vulnerable to attack by a different natural enemy. Anti-predator behaviors can lead to trait-mediated indirect effects, such as an increased risk of parasitism and vice versa. Few empirical studies have examined the response of a single focal species to the risk of attack by multiple species. Our experiments provided the cactiphilic fly Drosophila nigrospiracula with opportunities to prioritize either anti-predator (e.g., reduced activity) or anti-parasite behavior (e.g., increased activity) at the cost of increased infection or predation, respectively. We experimentally show that when flies were exposed to ectoparasitic mites, in the presence of predator (jumping spider) cues, flies incurred increased levels of infection compared to flies without predator cues. The mean infection prevalence increased by 80% and the infection intensity increased by 180%. However, the presence of parasite cues had no analogous effect on predation rates, which suggests that flies prioritized predation risk over parasite defense at the cost of increased infection. We provide empirical evidence that the presence of multiple threats can lead to trait-mediated indirect effects, with important consequences for host-parasite and food web dynamics, and the ecology of fear.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 5","pages":"79"},"PeriodicalIF":2.3,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144032824","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}

引用次数: 0

Assessing carbon and nitrogen economics in temperate forests through the relationship between foliar nutrient resorption and root production. 通过叶面养分吸收与根系生产的关系评估温带森林的碳氮经济。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-05-05 DOI: 10.1007/s00442-025-05710-7

Adrienne B Keller, Richard P Phillips

{"title":"Assessing carbon and nitrogen economics in temperate forests through the relationship between foliar nutrient resorption and root production.","authors":"Adrienne B Keller, Richard P Phillips","doi":"10.1007/s00442-025-05710-7","DOIUrl":"10.1007/s00442-025-05710-7","url":null,"abstract":"Plants both respond to and influence their immediate soil environment, which can yield divergent predictions regarding plant economics and trait coordination. Tree species with high foliar nitrogen (N) resorption efficiency (NRE)-an important N conservation strategy-may invest less carbon (C) belowground to acquire soil-derived N. This \"tree perspective\" hypothesis predicts a negative relationship between NRE and root production. Alternatively, high NRE reduces litter N concentrations, which can reduce soil N availability, requiring trees to invest more C belowground to get N. This \"soil perspective\" hypothesis predicts a positive relationship between NRE and root production. We test these hypotheses and then examine how NRE relates to foliar and litter N in three natural forests (~ 80-120-year-old trees; 12 species) and one common garden (~ 25-year-old trees; 9 species) in the eastern U.S. NRE was weakly and positively related to root production at the common garden, supporting our \"soil perspective\" hypothesis that litter-soil nutrient feedbacks drive a positive relationship between NRE and root production. There was no relationship between NRE and root production at the natural forest sites, providing no evidence for our \"tree perspective\" hypothesis, which purports that NRE is negatively related to root production given competition between roots and leaves for C. NRE was positively related to foliar N but negatively related to litter N, illustrating that NRE is an important physiological trait linking aboveground nutrient use with litter-soil nutrient feedbacks. These findings suggest that plant economics and the cost of soil N acquisition contribute to local-scale nutrient cycling in temperate forests.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 5","pages":"78"},"PeriodicalIF":2.3,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144045444","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}

引用次数: 0

Shrub effect on grassland community assembly depends on plant functional traits and shrub morphology. 灌木对草地群落组合的影响取决于植物功能性状和灌木形态。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-05-02 DOI: 10.1007/s00442-025-05716-1

Xiaomei Kang, Xinyang Wu, Yanjun Liu, Aoran Zhang, Lijie Duan, Jieyang Zhou, Zhixi Zhan, Wei Qi

{"title":"Shrub effect on grassland community assembly depends on plant functional traits and shrub morphology.","authors":"Xiaomei Kang, Xinyang Wu, Yanjun Liu, Aoran Zhang, Lijie Duan, Jieyang Zhou, Zhixi Zhan, Wei Qi","doi":"10.1007/s00442-025-05716-1","DOIUrl":"10.1007/s00442-025-05716-1","url":null,"abstract":"An accurate assessment of shrub-herb interactions is challenging because shrubs can facilitate herb growth as nurse plants and negatively affect herbs as competitors. As responses to the effects of neighbors are often trait dependent, the impact of shrubs on grassland communities may differ with a variation in herb functional traits. In 2020, we surveyed the structure and functional pattern of 160 Qinghai-Tibet alpine grassland communities under the canopy of four dominant shrub species and their surrounding open areas. We found an overall negative effect of shrubs on grassland productivity, species diversity, and individual abundance, suggesting that interspecific resource competition, rather than facilitation, dominated the effect of shrubs on herb growth. The negative effect was weakest for small deciduous shrub species, implying that seasonal defoliation and low shading conditions could reduce the light competition of shrubs on herbs. Shrubs generally increased grassland functional diversity of vegetative traits, especially leaf economic traits, but decreased that of reproductive traits, especially seed traits, demonstrating that shrubs affected grassland community assembly by offering benign microhabitats to protect herbaceous species with stress-intolerant or fast-acquisition vegetative traits and setting physical barriers to prevent the entry of species with specific reproductive traits. Moreover, as canopy transmittance increased, positive shrub effects on leaf size diversity became more pronounced. However, an increase in canopy size intensified the negative effects of shrubs on the diversity of plant height and some reproductive traits. Results illustrated that the structuring of alpine grassland communities by shrubs depends on their type (semi-evergreen or deciduous) and size.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 5","pages":"77"},"PeriodicalIF":2.3,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144032825","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}

引用次数: 0

On the need to use proper metrics to detect experimental drought treatments. 关于需要使用适当的指标来检测试验干旱处理。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-05-02 DOI: 10.1007/s00442-025-05717-0

Bruno H P Rosado, Ilaine Silveira Matos

{"title":"On the need to use proper metrics to detect experimental drought treatments.","authors":"Bruno H P Rosado, Ilaine Silveira Matos","doi":"10.1007/s00442-025-05717-0","DOIUrl":"10.1007/s00442-025-05717-0","url":null,"abstract":"Rainfall manipulation experiments are a powerful tool to investigate how drought in isolation or combined with other stresses and disturbance drivers (e.g., fire, herbivory, heatwaves) affects diverse ecological processes. Using passive rainout shelters (intercepting a fixed amount of precipitation) coupled with control plots (receiving ambient precipitation), hundreds of studies have greatly advanced our understanding of drought impacts on plant and soil communities. Despite the existence of guidelines of how to properly design and implement experimental droughts, methodological issues still hinder a correct interpretation of some rainfall manipulation studies. Because of the use of improper metrics to detect drought intensity, it is sometimes unclear whether drought plots really experienced dry conditions and whether control plots experienced near-average mean annual precipitation throughout the experimental period. Here, we reanalyzed three recently published rainfall manipulation studies to illustrate how multi-scalar drought indices (such as SPEI) can be used to better quantify the intensity of the experimental drought imposed and to place it in the historical climate context of each studied area. We also provide additional guidelines to improve the experimental design of future rainfall manipulation studies.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 5","pages":"76"},"PeriodicalIF":2.3,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144010212","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}

引用次数: 0

Shading and selection effect-mediated species mixing enhance the growth of native trees in dry tropical forests. 遮荫和选择效应介导的物种混合促进了热带干燥森林原生树木的生长。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-05-01 DOI: 10.1007/s00442-025-05708-1

Abebe Damtew, Emiru Birhane, Christian Messier, Alain Paquette, Bart Muys

{"title":"Shading and selection effect-mediated species mixing enhance the growth of native trees in dry tropical forests.","authors":"Abebe Damtew, Emiru Birhane, Christian Messier, Alain Paquette, Bart Muys","doi":"10.1007/s00442-025-05708-1","DOIUrl":"10.1007/s00442-025-05708-1","url":null,"abstract":"Tropical dry forests remain vital to rural communities but are often degraded and require restoration. Biodiversity plays a crucial role in maintaining ecosystem functioning and resilience and in providing essential services in these ecosystems. In many cases, restoration involves planting monospecific plantations of robust exotic species; however, detailed ecological studies are required to understand how native species mixtures could become successful for restoration purposes. To address this knowledge gap, a tree diversity experiment (IDENT-Ethiopia) was conducted to examine the impact of species diversity and shading on the growth of nine native tree species in tropical dry forests. The experiment followed a block design with 270 plots, which included a gradient in native tree species richness (1-, 2-, and 4-species mixtures) and a second gradient based on the functional diversity of species traits, including plots of low, medium, and high functional diversity. A shading treatment (shaded and unshaded) was also replicated in triplicate. The stem volume growth of seedlings was measured 1 and 2 years after planting. The results revealed that seedling growth was significantly boosted by increased species richness and shading: stem volume growth increased by 50.9% in shaded environments and 30.5% in mixed plots. The study also demonstrated a positive diversity productivity relationship in 57% of all mixtures. Variance partitioning showed that this overyielding was a result of competitive dominance. In the shaded environment, these productive dominant species were Cordia africana, followed by Dodonaea angustifolia and Dovyalis abyssinica. Overall, the findings suggest that shading and species mixing are crucial factors for promoting seedling growth of native dryland species and ensuring the successful restoration of drylands.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 5","pages":"75"},"PeriodicalIF":2.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144063586","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}

引用次数: 0

Ant foraging: optimizing self-organization as a solution to a traveling salesman problem. 蚂蚁觅食：优化自组织作为旅行推销员问题的解决方案。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-04-30 DOI: 10.1007/s00442-025-05720-5

Natasha Paago, Wilson Zheng, Peter Nonacs

{"title":"Ant foraging: optimizing self-organization as a solution to a traveling salesman problem.","authors":"Natasha Paago, Wilson Zheng, Peter Nonacs","doi":"10.1007/s00442-025-05720-5","DOIUrl":"10.1007/s00442-025-05720-5","url":null,"abstract":"Foraging ant colonies often face the challenge that food items can appear unpredictably across their territory. This is analogous to traveling salesman/salesperson problems (TSP), wherein solutions to visiting multiple possibly-rewarding sites can vary in cost, travel distance, or site revisits. However, TSP solutions for ants are likely also constrained by cognitive limitations. Rather than envisioning entire routes, ants probably determine their paths by individual-level responses to immediate stimuli, such as nestmate presence or avoiding revisiting an already explored site. Thus, complex group-level search and food retrieval patterns may self-organize from simple individual-level movement rules. Here we derive solutions through simulations that optimize net foraging gains across groups of ant-like agents. Agent search strategies evolve in three spatial networks that differ in travel distances to nests, connectivity, and modularity. We compare patterns from simulations to observed foraging of Argentine ants (Linepithema humile) in identical spatial networks. The simulations and ant experiments find foraging patterns are sensitive to both network characteristics and predictability of food appearance. Simulations are consistent in multiple ways with observed ant behavior, particularly in how network arrangements affect search effort, food encounters, and forager distributions (e.g., clustering in the more connected cells). In some distributions, however, ants find food more successfully than simulations predict. This may reflect a greater premium on encountering food in ants versus increasing find exploitation rates for agents. Overall, the results are encouraging that evolutionary optimization models incorporating relevant ant biology can successfully predict expression of complex group-level behavior.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 5","pages":"73"},"PeriodicalIF":2.3,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144010211","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}

引用次数: 0

Pollination efficiency of hummingbirds and flowerpiercers at the flowers of Lobelia laxiflora (Campanulaceae): morphological fit matters. 蜂鸟和穿孔虫在半边莲花上的传粉效率：形态契合问题。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-04-30 DOI: 10.1007/s00442-025-05718-z

Stefan Abrahamczyk, Ruben Dürr, Emanuel Brenes, María A Maglianesi

{"title":"Pollination efficiency of hummingbirds and flowerpiercers at the flowers of Lobelia laxiflora (Campanulaceae): morphological fit matters.","authors":"Stefan Abrahamczyk, Ruben Dürr, Emanuel Brenes, María A Maglianesi","doi":"10.1007/s00442-025-05718-z","DOIUrl":"10.1007/s00442-025-05718-z","url":null,"abstract":"Research on pollination systems has largely focused on structures of mutualistic networks, whereas pollinator efficiency defining the quality of visits received much less attention. Different flower-visiting animals can vary in their pollination efficiency, e.g. due to their morphology, size or visitation frequency. Here, we analyse several reproductive traits, including flower morphology and reproductive system of Lobelia laxiflora and compare pollination efficiency of flower visitors based on seed set. We found experimentally that Lobelia laxiflora is completely self-incompatible and that the flowers are frequently visited by Colibri cyanotus, which did not show preferences for one flower sex. Diglossa plumbea was a more rare visitor and concentrated on female flowers Diglossa forced their bills deeply into the dorsally open corolla tube but did not pierce flowers. Corolla tube length perfectly fitted bill length of Colibri cyanotus and lots of pollen was deposited on its heads. In contrast, Diglossa plumbea visited flowers by sitting in different positions to them. Therefore, the reproductive flower organs got in contact with different parts of its body. Consequently, Colibri cyanotus was a very efficient pollinator probably due to the high level of trait matching, whereas Diglossa plumbea was not pollinating at all. In conclusion, our study documents a rare case of a temporally limited one-to-one dependency of a plant and a hummingbird species on the population level. Additionally, it highlights the significant role of morphological trait matching and bird´s behaviour in flower handling for efficient pollination and demonstrates that non-adapted flower visitors may fail as pollinators.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 5","pages":"74"},"PeriodicalIF":2.3,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12043751/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144036952","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}

引用次数: 0

Floral traits and density are uneven drivers of heterospecific pollen deposition in a biodiverse tropical highland community. 在热带高原生物多样性群落中，花性状和密度是异种花粉沉积的不均匀驱动因素。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-04-29 DOI: 10.1007/s00442-025-05715-2

Nathália Susin Streher, Pedro Joaquim Bergamo, Tia-Lynn Ashman, Marina Wolowski, Marlies Sazima

{"title":"Floral traits and density are uneven drivers of heterospecific pollen deposition in a biodiverse tropical highland community.","authors":"Nathália Susin Streher, Pedro Joaquim Bergamo, Tia-Lynn Ashman, Marina Wolowski, Marlies Sazima","doi":"10.1007/s00442-025-05715-2","DOIUrl":"10.1007/s00442-025-05715-2","url":null,"abstract":"Pollinator sharing among plants within a community can have a variety of consequences, including the transfer of heterospecific pollen (HP) to stigmas, a process hypothesized to be phenotype (at the species and community levels) and flower density-mediated. In a tropical highland community, we investigated whether species' HP receipt depends on species trait means and/or their trait similarity to other species in the community. We also tested whether HP received by individuals is affected by floral density and if so, at what scale. Density responses in HP receipt were then integrated into species trait analysis to determine whether trait patterns persisted across scales after accounting for density. We found that species with stigmas more exposed and with functionally specialized pollination received more HP, and species flowering more synchronously to the community received greater proportions of HP. At the individual level, HP proportion depended on the interaction between conspecific and heterospecific flower densities, with outcomes varying by scale. At the local scale (within 2m2), low-to-medium conspecific flower abundance increased the proportion of HP receipt with the increase of heterospecific floral density, while high conspecific and heterospecific floral densities reduced HP. Conversely, at the landscape scale (across 202m2), high conspecific and heterospecific floral densities enhanced the proportion of HP, while low-to-medium densities had no effect. Our results demonstrate that HP is widespread in the community, driven primarily by flower density, which is scale-dependent, while species traits and their similarity to the community play a secondary role.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 5","pages":"72"},"PeriodicalIF":2.3,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144017004","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}

引用次数: 0

Decomposing leaf mass into metabolic and structural components explains divergent patterns of trait variation within and among plant species. 将叶质量分解为代谢成分和结构成分解释了植物物种内部和物种之间性状变异的不同模式。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-04-28 DOI: 10.1007/s00442-025-05714-3

Masatoshi Katabuchi, Kaoru Kitajima, S Joseph Wright, Sunshine A Van Bael, Jeanne L D Osnas, Jeremy W Lichstein

{"title":"Decomposing leaf mass into metabolic and structural components explains divergent patterns of trait variation within and among plant species.","authors":"Masatoshi Katabuchi, Kaoru Kitajima, S Joseph Wright, Sunshine A Van Bael, Jeanne L D Osnas, Jeremy W Lichstein","doi":"10.1007/s00442-025-05714-3","DOIUrl":"10.1007/s00442-025-05714-3","url":null,"abstract":"Across the global flora, interspecific variation in photosynthetic and metabolic rates depends more strongly on leaf area than leaf mass. In contrast, intraspecific variation in these rates is strongly mass-dependent. These contrasting patterns suggest that the causes of variation in leaf mass per area (LMA) may be fundamentally different within vs. among species. In order to explain these contrasting patterns, we developed a statistical modeling framework to decompose LMA into two components-metabolic LMAm (which determines photosynthetic capacity and dark respiration) and structural LMAs (which determines leaf toughness and potential leaf lifespan)-using leaf trait data from tropical forests in Panama and a global leaf-trait database. Decomposing LMA into LMAm and LMAs improves predictions of leaf trait variation (photosynthesis, respiration, and lifespan) within and among species. We show that strong area-dependence of metabolic traits across species can result from multiple factors, including high LMAs variance and/or a slow increase in photosynthetic capacity with increasing LMAm. In contrast, strong mass-dependence of metabolic traits within species results from LMAm increasing from shady to sunny conditions. LMAm and LMAs were nearly independent of each other in both global and Panama datasets, suggesting the presence of at least two important dimensions of leaf functional variation.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 5","pages":"71"},"PeriodicalIF":2.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143996008","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}

引用次数: 0

The functional traits of dominant species exerts strong effects on the biomass of ephemeral plant communities under snow experiment in the arid area, Northwest China. 西北干旱区积雪试验条件下，优势种的功能性状对短期植物群落生物量有较大影响。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-04-27 DOI: 10.1007/s00442-025-05713-4

Ni Ren, Lei Shi, Jinfei Yin, Ailin Zhang

{"title":"The functional traits of dominant species exerts strong effects on the biomass of ephemeral plant communities under snow experiment in the arid area, Northwest China.","authors":"Ni Ren, Lei Shi, Jinfei Yin, Ailin Zhang","doi":"10.1007/s00442-025-05713-4","DOIUrl":"10.1007/s00442-025-05713-4","url":null,"abstract":"In the mid-latitudes, snow is an important component of seasonal precipitation and one of the most important abiotic factors affecting the ecosystem. Winter snow cover may affect plant growth and community function by changing moisture, temperature, nutrient ions and soil micro-environment. Community biomass is an important index reflecting community function, but the way snow cover affects biomass is not clear. We conducted a manipulative experiment with four levels of snow depths in Gurbantunggut Desert in Central Asia, i.e. snow removal (- S), natural snow depth (CK), doubling of snow depth (+ 2Sdouble) and tripling of snow depth (+ 3Striple). We found significantly increased plant community biomass with increasing level of snow depth as a result of increased height of the dominant species Erodium oxyrhinchum. Increases in the snow depth significantly increased the community species richness, but had no significant effect on diversity indexes. The effects of snow cover on the plant community biomass were mainly resulted from soil water of snow melting. With the increase of snow cover depth, the increase of community biomass was mainly affected by the functional traits of the dominant species. This result is consistent with the \"mass ratio hypothesis\". The results indicate that the increase of snow cover will promote the increase of short-lived plant productivity in arid areas, and the response of productivity to snow cover is mainly realized through the change of functional traits of dominant species.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 5","pages":"70"},"PeriodicalIF":2.3,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143972213","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}

引用次数: 0