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Do savanna trees mast? Phenological dynamics of flowering and fruiting in savanna tree species. 热带草原上的树长得高吗?热带草原树种开花和结果的物候动态。
IF 2.3 2区 环境科学与生态学
Oecologia Pub Date : 2025-05-16 DOI: 10.1007/s00442-025-05706-3
Corli Coetsee, Benjamin J Wigley, Steven I Higgins
{"title":"Do savanna trees mast? Phenological dynamics of flowering and fruiting in savanna tree species.","authors":"Corli Coetsee, Benjamin J Wigley, Steven I Higgins","doi":"10.1007/s00442-025-05706-3","DOIUrl":"10.1007/s00442-025-05706-3","url":null,"abstract":"<p><p>A priori, it is not clear if masting should be expected in savannas and few studies have attempted to detect masting in savannas. We tracked the flower and fruiting phenology of 18 savanna woody species on a monthly basis in Kruger National Park for 8 years. We used multiple metrics to detect masting including phenological intensity and its CV, phenological volatility, synchrony and the proportion of failure years. Additionally, we used a process-based model of plant growth to test whether resource matching could explain the observed phenological behaviour. Overall, the measured masting metrics provided no unequivocal evidence for masting. For 4 of the 18 study species, the fruiting CV, synchrony and volatility were consistent with masting. The process-based model of plant growth could reproduce observed flowering and fruiting behaviour, suggesting that resource matching could explain the observed phenological behaviour of the species. We propose that future research should explore the possibility that masting may not be selected for in savannas due to the prevalence of generalist pollinators, dispersal agents and seed predators. Although masting does not appear to be a prevalent phenological strategy in savannas, we detected large between species variation in reproductive phenology, which is likely to have consequences for the trophic dynamics of the study system.</p>","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 6","pages":"85"},"PeriodicalIF":2.3,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144079340","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
Rapid recovery of an arctic lake ecosystem from a pulse disturbance caused by thermokarst failure. 北极湖泊生态系统从热岩溶破坏引起的脉冲扰动中快速恢复。
IF 2.3 2区 环境科学与生态学
Oecologia Pub Date : 2025-05-15 DOI: 10.1007/s00442-025-05681-9
Phaedra Budy, Casey A Pennock, Sarah Messenger, Hunter Pehrson, Emily Adler, Gary P Thiede, Natasha R Christman, Byron C Crump, Anne E Giblin, George W Kling
{"title":"Rapid recovery of an arctic lake ecosystem from a pulse disturbance caused by thermokarst failure.","authors":"Phaedra Budy, Casey A Pennock, Sarah Messenger, Hunter Pehrson, Emily Adler, Gary P Thiede, Natasha R Christman, Byron C Crump, Anne E Giblin, George W Kling","doi":"10.1007/s00442-025-05681-9","DOIUrl":"10.1007/s00442-025-05681-9","url":null,"abstract":"<p><p>Due to rapid climate change, arctic ecosystems are experiencing an increase in disturbances including localized land-surface failures caused by melting ground ice (thermokarst failures). These failures result in the mass transport of sediment and organic materials into surface waters, with the potential to dramatically alter aquatic ecosystem function and biotic interactions. We coupled direct comparisons and long-term data of a suite of abiotic and biotic variables in a thermokarst-impacted lake and nearby reference lake to assess the impacts of thermokarst failure. After the thermokarst failure and relative to long-term averages, water transparency was substantially reduced. We hypothesized there would be subsequent changes to lower trophic levels and profound declines in fish foraging efficiency. However, these characteristics were within the range of natural variability and/or rapidly recovered to values within the range of long-term variability. In addition, although there was limited evidence of taxa-specific changes, we did not observe any strong changes in the total relative densities, growth rates, or composition of the bacterioplankton and zooplankton communities, benthic macroinvertebrates, or changes in fish diet, that could be attributed statistically to the thermokarst event. In sum, the thermokarst disturbance had substantial effects on water transparency and some lower trophic levels, which surprisingly were not manifested in higher trophic levels. Overall, the lake ecosystem appeared resistant to thermokarst disturbance with rapid recovery within two years after the disturbance.</p>","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 6","pages":"82"},"PeriodicalIF":2.3,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12081580/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144078723","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
Announcing winners of the Ehleringer and Hanski Prizes for outstanding papers published by student authors in Oecologia in 2023. 宣布2023年学生作者在《生态》杂志上发表的优秀论文的Ehleringer和Hanski奖获奖者。
IF 2.3 2区 环境科学与生态学
Oecologia Pub Date : 2025-05-15 DOI: 10.1007/s00442-025-05719-y
Joel Trexler
{"title":"Announcing winners of the Ehleringer and Hanski Prizes for outstanding papers published by student authors in Oecologia in 2023.","authors":"Joel Trexler","doi":"10.1007/s00442-025-05719-y","DOIUrl":"https://doi.org/10.1007/s00442-025-05719-y","url":null,"abstract":"","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 6","pages":"83"},"PeriodicalIF":2.3,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144079339","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
Native Australian seedlings exhibit novel strategies to acclimate to repeated heatwave events. 澳大利亚本土的幼苗表现出新的策略来适应反复的热浪事件。
IF 2.3 2区 环境科学与生态学
Oecologia Pub Date : 2025-05-15 DOI: 10.1007/s00442-025-05704-5
Philippa R Alvarez, Rosalie J Harris, Alicia M Cook, Verónica F Briceño, Adrienne B Nicotra, Andrea Leigh
{"title":"Native Australian seedlings exhibit novel strategies to acclimate to repeated heatwave events.","authors":"Philippa R Alvarez, Rosalie J Harris, Alicia M Cook, Verónica F Briceño, Adrienne B Nicotra, Andrea Leigh","doi":"10.1007/s00442-025-05704-5","DOIUrl":"10.1007/s00442-025-05704-5","url":null,"abstract":"<p><p>Heatwaves are becoming more intense and frequent. Plant photosystem thermal thresholds can vary with species, but also shift in response to environmental triggers. Both upper and lower thresholds can acclimate to repeated heatwaves through ecological stress memory, where prior exposure primes them for subsequent events. The extent to which acclimation to repeated heat stress events varies among environmental origin and/or species is unknown. Different acclimation strategies might reflect biome of origin, or may be species-specific. For 12 species from two contrasting biomes-extreme desert and benign coastal temperate-we investigated responses to two simulated heatwaves, via shifts in upper and lower critical temperatures of photosystem II, and the difference between these thresholds, thermal tolerance breadth (TTB). Biome of origin had no effect on thermal tolerance. Observed differences among species following heat events suggested two possible acclimatory strategies. In some cases, species increased thermal thresholds during the first heatwave, but at the cost of reduced thermal tolerance during the second heatwave, a sprinter strategy. Other species acclimated to the first heatwave and further increased thermal tolerance to a second heatwave, indicative of ecological stress memory, a marathoner strategy. Synthesis: these among-species responses to heatwaves could suggest distinct vulnerabilities and resilience to repeat heat stress events, with some species having limited capacity to tolerate consecutive heatwaves, possibly as the cost of acclimation is too great, with other species having the advantage of increased tolerance via stress memory, helping them survive future stress, at least in the short-term.</p>","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 6","pages":"84"},"PeriodicalIF":2.3,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12081561/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144078227","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
Effects of microplastics and natural particles on the aquatic invertebrate Daphnia magna under different dietary quality scenarios. 不同膳食质量下微塑料和天然颗粒对水生无脊椎动物大水蚤的影响。
IF 2.3 2区 环境科学与生态学
Oecologia Pub Date : 2025-05-14 DOI: 10.1007/s00442-025-05723-2
Guang-Jie Zhou, Eeva-Riikka Vehniäinen, Minna Hiltunen, Cyril Rigaud, Sami Taipale
{"title":"Effects of microplastics and natural particles on the aquatic invertebrate Daphnia magna under different dietary quality scenarios.","authors":"Guang-Jie Zhou, Eeva-Riikka Vehniäinen, Minna Hiltunen, Cyril Rigaud, Sami Taipale","doi":"10.1007/s00442-025-05723-2","DOIUrl":"https://doi.org/10.1007/s00442-025-05723-2","url":null,"abstract":"<p><p>Natural and synthetic particles co-occur in the aquatic environment. However, little information is available about the effects of natural particles on freshwater animals and how these effects differ from those of synthetic particles, especially under the scenarios of decreasing dietary quality and increasing cyanobacteria in the aquatic environment. Therefore, this study evaluated apical and molecular effects of polypropylene (PP) microplastics (MPs) and three natural non-food particles (i.e., kaolin, peat, and sediment) on the freshwater invertebrate Daphnia magna fed either a green alga or a mixture of green alga and cyanobacterium. After the 21-d chronic exposure of 10 mg/L PP when using the green alga Acutodesmus sp. as diet, the size of D. magna was significantly reduced, and the molting time was significantly extended compared with the control. However, the chronic effects of PP were masked when the cyanobacterium Pseudanabaena sp. was added to their diet. The natural particles kaolin, peat, and sediment posed insignificant effects on D. magna regardless of dietary quality. The expression of molting-related genes (e.g., ecr-a) and oxidative stress-related genes (e.g., sod2) was significantly upregulated in D. magna with the exposure of both natural and synthetic particles. The predicted no-effect concentration of PP was derived as 0.025 mg/L, raising concerns relating to their toxicity and risks in the contaminated aquatic environment. This study will improve our understanding of the effects and risks of natural and synthetic particles in freshwater environments, as well as facilitate ecoenvironmental authorities to make informed decisions on the appropriate management of MPs.</p>","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 6","pages":"81"},"PeriodicalIF":2.3,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144079341","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
Scale dependent niche conservatism in fish communities of the largest freshwater lake in China. 中国最大淡水湖鱼类群落的尺度依赖生态位保守性。
IF 2.3 2区 环境科学与生态学
Oecologia Pub Date : 2025-05-08 DOI: 10.1007/s00442-025-05724-1
Tingyue Yang, Lan Zhu, Dan Yu, Chunling Wang, Masami Fujiwara, Qinghua Cai, Huanzhang Liu
{"title":"Scale dependent niche conservatism in fish communities of the largest freshwater lake in China.","authors":"Tingyue Yang, Lan Zhu, Dan Yu, Chunling Wang, Masami Fujiwara, Qinghua Cai, Huanzhang Liu","doi":"10.1007/s00442-025-05724-1","DOIUrl":"https://doi.org/10.1007/s00442-025-05724-1","url":null,"abstract":"<p><p>Two major theoretical concepts of niche evolution lead to conflicting predictions in ecological studies: the competitive exclusion principle (CEP) predicts that closely-related species should be sufficiently divergent to coexist, whereas niche conservatism (NC) suggests that closely-related species should be more ecologically similar. Here, we test this conundrum by employing stable isotope ratios (δ<sup>13</sup>C, δ<sup>15</sup>N) to estimate trophic niches and test niche evolution in fish communities of Poyang Lake, central China. At a broad phylogenetic scale involving 57 species, we examined the relationships between trophic niche differences along genetic distances and tested phylogenetic signals. We found that trophic differences were positively associated with genetic distances when genetic distances were less than 0.24, showing strong phylogenetic signal, but not when larger than 0.24. We then focused on seven Cultrinae species coexisting at a local scale and compared trophic niche differences within and between sister species, closely-related species, and distantly-related species. We found that trophic differences between distantly-related species were significantly larger than those between closely-related species at a broad spatial scale, supporting NC. However, trophic differences between sister species were larger than those between closely-related species at a small local scale (individual sampling sites), suggesting the importance of CEP not NC. Hence, our findings suggest that niche evolution operates in a scale-dependent manner: in a phylogenetic scale (time scale), NC predictions were met well below a certain range, not above that range; at a spatial scale, CEP predictions were met for coexisting sister species, however the other species followed the NC predictions.</p>","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 5","pages":"80"},"PeriodicalIF":2.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144006861","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
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":"https://doi.org/10.1007/s00442-025-05722-3","url":null,"abstract":"<p><p>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.</p>","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":"https://doi.org/10.1007/s00442-025-05710-7","url":null,"abstract":"<p><p>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.</p>","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":"https://doi.org/10.1007/s00442-025-05716-1","url":null,"abstract":"<p><p>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.</p>","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":"https://doi.org/10.1007/s00442-025-05717-0","url":null,"abstract":"<p><p>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.</p>","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
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