IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2026-04-24 DOI: 10.1007/s00442-026-05891-9

Bertille Mohring, Ida Hermansson, Kim Jaatinen, Markus Öst

{"title":"Predation risk is associated with head-size-related divergence in breeding phenology in a female sea duck.","authors":"Bertille Mohring, Ida Hermansson, Kim Jaatinen, Markus Öst","doi":"10.1007/s00442-026-05891-9","DOIUrl":"https://doi.org/10.1007/s00442-026-05891-9","url":null,"abstract":"Breeding phenological responses to changing environments affect demographics and population persistence. However, inter-individual variation in adjustment of reproductive timing to predation risk has been overlooked. We thus tested whether increasing natural predation risk enhanced or homogenized reproductive timing of females differing in risk sensitivity. Using behavioral (flight initiation distance, FID) and cognitive (relative head volume) proxies of risk sensitivity, we analyzed laying dates of female common eiders (Somateria mollissima) breeding in SW Finland (Baltic Sea) relative to conspecifics under fluctuating predation pressure, while accounting for breeding experience and body condition. We found that high predation risk was associated with a divergence of female eider breeding phenologies depending on cognitive but not behavioral proxies of risk sensitivity. Accordingly, relatively large-headed females, assumed to be more risk-sensitive, bred later than small-headed ones following years of high adult or nest predation risk-plausibly reflecting extended nest prospecting in risk-sensitive individuals-leading to greater laying asynchrony. In contrast, females displaying longer FIDs (more risk-sensitive) bred earlier than those displaying shorter FIDs, but this response was irrespective of the level of predation risk. Because FID was measured late in incubation, we hypothesize that it may more strongly reflect state-dependent parental investment in the current breeding attempt than risk sensitivity during nest initiation, with higher parental investment promoting delayed escape. Additionally, experienced breeders bred earlier than inexperienced ones. More attention should be given to cognitive traits and behaviors associated with risk sensitivity to better understand variation in individual breeding phenology and synchrony.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"208 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13109241/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147777512","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

Trait- and environment-based determinants of reproduction in the old forest indicator lichen Lobaria pulmonaria. 性状和环境因素对老森林指示物肺叶地衣繁殖的影响。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2026-04-17 DOI: 10.1007/s00442-026-05897-3

Yngvar Gauslaa

{"title":"Trait- and environment-based determinants of reproduction in the old forest indicator lichen Lobaria pulmonaria.","authors":"Yngvar Gauslaa","doi":"10.1007/s00442-026-05897-3","DOIUrl":"10.1007/s00442-026-05897-3","url":null,"abstract":"Effective conservation of the iconic old forest lichen Lobaria pulmonaria depends on understanding its life history bottlenecks. To address this, reproductive dynamics were evaluated in 302 juvenile and early-reproducing thalli transplanted across environmental gradients-including elevation, canopy openness, and bark pH-in pristine British Columbian forests over a 14 months period. Soralia cover increased significantly but at a slow rate, with marginal soralia appearing earlier and more frequently than laminal soralia. The intrinsic trait of initial total soralia cover emerged as the strongest predictor of the change in reproductive effort. Additionally, thalli with low specific thallus mass at start (STMStart) and rapid growth rates exhibited reduced reproductive activity. Environmental stressors, such as high-light-induced chlorophyll bleaching and elevated altitude, weakly inhibited soralia development. Sexual reproduction was rare, with apothecia present in only 2% of transplants and no new apothecia forming during the study. The findings highlight the slow pace of soralia formation and, coupled with the species' long generation time, suggest that current forest rotation cycles in managed forests may be insufficient to sustain viable L. pulmonaria populations. Conservation strategies should therefore account for both slow reproductive onset and sensitivity to environmental conditions.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"208 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13090217/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147717803","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

Plant invasion reduces density-dependent pollination but not florivory. 植物入侵会减少依赖密度的授粉，但不会减少花期。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2026-04-16 DOI: 10.1007/s00442-026-05881-x

Nicholas Sookhan, Shane Sookhan, Devlin Grewal, Thomas M Onuferko, Marc W Cadotte, J Scott MacIvor

{"title":"Plant invasion reduces density-dependent pollination but not florivory.","authors":"Nicholas Sookhan, Shane Sookhan, Devlin Grewal, Thomas M Onuferko, Marc W Cadotte, J Scott MacIvor","doi":"10.1007/s00442-026-05881-x","DOIUrl":"https://doi.org/10.1007/s00442-026-05881-x","url":null,"abstract":"Understanding the impact of plant invasion on multitrophic community dynamics and coexistence requires widespread and frequent monitoring. Deep learning can be used to automate the measurement of indicators of ecological interactions and ecosystem functioning. In this study, we used a consumer-grade drone paired with deep learning to assess floral density in meadows invaded by the dog-strangling vine Vincetoxicum rossicum (Kleopow) Barbar. (Gentianales: Apocynaceae) at the Rouge National Urban Park in the Greater Toronto Area, Ontario, Canada. Alongside these measurements, observations of pollination and herbivory was completed on Symphyotrichum novae-angliae (L.) G.L.Nesom (Asterales: Asteraceae), a self-incompatible, pollinator-dependent native plant that experiences herbivory by a widespread specialist weevil, Anthonomus rufipes LeConte (Coleoptera: Curculionidae). Our results suggest that as invasion progresses, pollination services are reduced due to the decrease in floral density which suppresses pollinator abundance and activity. Conversely, while herbivory had a strong effect on plant reproduction, it was density independent and thus unaffected by direct effects of invasion, but rather indirect through reduced host abundance. By pairing deep learning with drone technology, we detected patterns consistent with a reduction of pollinator habitat quality along the invasion gradient. Furthermore, we find that invasion appears to suppress plant reproduction by means of separate processes that are either independent of or dependent on pollination. Overall, the results suggest that invasion reduces pollinator habitat quality while simultaneously resulting in ecological conditions consistent with the reproductive impairment of late-season flowering resident plant species.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"208 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147699340","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

Quantitative fatty acid signature analysis (QFASA) to explore the diet of the plateau pika (Ochotona curzoniae) during winter on the Qinghai-Xizang (Tibetan) plateau. 利用定量脂肪酸特征分析（QFASA）研究青藏高原高原鼠兔冬季的食性。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2026-04-09 DOI: 10.1007/s00442-026-05893-7

Min Li, Zengguang Jin, Lukasz Oldakowski, Shien Ren, Baoguo Li, Li Li, Jazmin Osorio-Mendoza, Yang Jiao, Siqi Yong, Dehua Wang, Yanming Zhang, Guanghou Shui, John R Speakman

{"title":"Quantitative fatty acid signature analysis (QFASA) to explore the diet of the plateau pika (Ochotona curzoniae) during winter on the Qinghai-Xizang (Tibetan) plateau.","authors":"Min Li, Zengguang Jin, Lukasz Oldakowski, Shien Ren, Baoguo Li, Li Li, Jazmin Osorio-Mendoza, Yang Jiao, Siqi Yong, Dehua Wang, Yanming Zhang, Guanghou Shui, John R Speakman","doi":"10.1007/s00442-026-05893-7","DOIUrl":"10.1007/s00442-026-05893-7","url":null,"abstract":"The plateau pika, a keystone species of the Tibetan Plateau, is also widely poisoned as an agricultural pest. An intriguing observation is that pika are more abundant where their main competitor (domestic yak) is also most abundant. A recent study showed that this may be because pika supplement their diet in winter by consuming yak feces. Here we used quantitative fatty acid signatures analysis to explore pika diet and detect the possibility of coprophagy. We collected fat tissue from pika at 3 sites of varying elevation, and compared the abundance of 10 fatty acids (FA) in their body fat with those in their main potential foods (grass, roots and feces). We used an optimization program to establish the best-fit diet to the observed FA distributions, using mouse fat as a negative control. Pika fat FA signatures matched plateau foods far better than mouse fat. Faeces consumption doubled as the elevation of the site increased from 12.8% at the lowest site to 26.8% at the highest. In contrast consumption of roots showed the opposite pattern, comprising 32% at the lowest elevation and falling to virtually zero at the highest. That might reflect the time that the surface ground is frozen inhibiting the ability to dig for roots at higher elevation sites. Our data support the previous suggestion that pika eat yak feces, potentially giving them an over-winter survival advantage increasing their populations where yak are abundant. The full extent of coprophagy however requires more data in a larger population sample.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"208 4","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13065619/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147639464","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

Leaf status drives shifts in both community composition and trophic mode of foliar endophytic fungi via variation in functional traits in Tibetan alpine meadow. 青藏高寒草甸叶片状态通过功能性状的变化驱动叶片内生真菌群落组成和营养模式的变化。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2026-04-08 DOI: 10.1007/s00442-026-05894-6

Hongyuan Kan, Shiting Zhang

{"title":"Leaf status drives shifts in both community composition and trophic mode of foliar endophytic fungi via variation in functional traits in Tibetan alpine meadow.","authors":"Hongyuan Kan, Shiting Zhang","doi":"10.1007/s00442-026-05894-6","DOIUrl":"10.1007/s00442-026-05894-6","url":null,"abstract":"Foliar endophytic fungi (FEF) influence plant performance and early litter decay, yet whether leaf senescence imposes common assembly rules across hosts remains unclear. Here, we collected paired live and senescent leaves from 11 plant species across three spatial blocks (66 FEF samples) in an alpine meadow on the Tibetan Plateau and characterized FEF communities and leaf functional traits. Our results showed that leaf status, host species, and their interaction structured FEF community composition. Compared with live leaves, senescent leaves harbored higher α-diversity, exhibited lower among-host β-dispersion, and had more core taxa shared across hosts. Senescent leaves showed reduced relative abundance of symbiotrophic modes and increased relative abundance of saprotrophic modes compared to live leaves. At the community level, senescent leaves showed depleted nitrogen and hemicellulose but enriched cellulose and lignin, redirecting trait-community linkages from soluble resources to recalcitrant polymers. The findings highlight that leaf status is a primary driver of endophytic fungal community assembly, and reveal adaptive shifts in endophytic fungal communities associated with leaf senescence.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"208 4","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147633919","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

Fertilization and herbivore exclusion promote more deterministic processes in plant community assembly on the Qinghai-Tibet Plateau. 施肥和草食排斥促进了青藏高原植物群落聚集的确定性过程。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2026-04-08 DOI: 10.1007/s00442-026-05895-5

Wei Zhao, Shaohao Bang, Zhenzhen Pan, Ruibing Wang, Huan Chen, Dexiecuo Ai, Xiaolong Zhou, Honglin Li, Ning Chen, Shiting Zhang, Zhengwei Ren

{"title":"Fertilization and herbivore exclusion promote more deterministic processes in plant community assembly on the Qinghai-Tibet Plateau.","authors":"Wei Zhao, Shaohao Bang, Zhenzhen Pan, Ruibing Wang, Huan Chen, Dexiecuo Ai, Xiaolong Zhou, Honglin Li, Ning Chen, Shiting Zhang, Zhengwei Ren","doi":"10.1007/s00442-026-05895-5","DOIUrl":"10.1007/s00442-026-05895-5","url":null,"abstract":"Fertilization and herbivore exclusion are two key forces influencing community structure and species richness in grassland ecosystems. However, the extent to which these factors influence the relative contributions of deterministic and stochastic processes in community assembly remains poorly understood. In this study, we conducted a five-year field experiment that manipulated nutrient availability and herbivore exclusion in an alpine meadow on the eastern Qinghai-Tibet Plateau. The results showed that fertilization, herbivore exclusion, and their combination significantly decreased species richness and drove Raup-Crick dissimilarity close to - 1 relative to the control. In the final year of the experiment, these treatments drove a distinct directional shift in community composition, diverging significantly from the control. Furthermore, all treatments significantly increased community-weighted mean (CWM) height and specific leaf area (SLA), and these shifts in fast resource-acquisition traits were significantly correlated with the intensification of deterministic processes (i.e., Raup-Crick dissimilarity approaching - 1). Consequently, we conclude that in natural alpine meadows (control), community assembly is primarily driven by stochastic processes. In contrast, the experimental treatments diminished the influence of stochasticity, establishing the dominance of deterministic processes through environmental filtering. This shift in assembly patterns was largely mediated by plant functional traits. Because this filtering strongly selected for dominant species possessing fast resource-acquisition traits and exceptional competitive abilities for light, it ultimately led to community homogenization and a decline in species richness. Notably, the combined treatment did not yield a stronger deterministic effect than either treatment alone, indicating a lack of an additive effect.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"208 4","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147633904","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

Parallel elevational replacement of hosts and parasites in a highly susceptible songbird genus. 高易感鸣禽属中寄主和寄生虫的平行海拔替换。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2026-04-07 DOI: 10.1007/s00442-026-05892-8

Daniele L F Wiley, Jessie L Williamson, Silas E Fischer, Selina M Bauernfeind, Henry M Streby, Kathy Granillo, Christopher C Witt, Lisa N Barrow

{"title":"Parallel elevational replacement of hosts and parasites in a highly susceptible songbird genus.","authors":"Daniele L F Wiley, Jessie L Williamson, Silas E Fischer, Selina M Bauernfeind, Henry M Streby, Kathy Granillo, Christopher C Witt, Lisa N Barrow","doi":"10.1007/s00442-026-05892-8","DOIUrl":"10.1007/s00442-026-05892-8","url":null,"abstract":"Elevational replacement distribution patterns underpin montane diversity and reflect the interaction of both biotic and abiotic pressures, but the degree to which parasites exhibit elevational zonation remains unclear. Investigating infection patterns in related host species across elevational gradients can reveal whether parasites and hosts show concordant patterns of elevational turnover, potentially due to shared historical and ecological factors. Here, we assessed patterns of elevational replacement in haemosporidian parasite assemblages that infect three congeneric songbird species: Bell's vireo (Vireo bellii), gray vireo (V. vicinior), and plumbeous vireo (V. plumbeus), each of which breeds across distinct elevations and habitats in the southwestern United States. We screened a total of 248 individuals using cytochrome b PCR and microscopy. We identified 19 haemosporidian haplotypes, including eight novel lineages. We found that each of the three vireo species exhibited high haemosporidian prevalence (55.0-86.2%), with nearly all infections from the genus Haemoproteus (subgenus Parahaemoproteus). Haemosporidian assemblages varied across elevations; each sampled range of elevations harbored abundant, yet host-specific lineages with different environmental associations. Bell's and plumbeous vireos, but not gray vireos, hosted several phylogenetically distinct, putative generalist lineages, likely reflecting spillover from more diverse local breeding bird communities. Repeated infections in individuals across breeding seasons, together with moderate parasitemia (x̄ ≈ 1%) suggest that these focal vireo species harbor chronic infections during their respective breeding seasons. These results demonstrate that elevational replacement patterns in avian hosts may be mirrored by their haemosporidian parasites, particularly among host-specialized lineages.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"208 4","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147628185","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

Effects of population density on life history traits in a moth: in search of proximate and ultimate explanations. 种群密度对飞蛾生活史特征的影响：寻找近因和终极解释。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2026-04-07 DOI: 10.1007/s00442-026-05885-7

Kerli Kuusk, Toomas Esperk, Tiit Teder, Sille Holm, Toomas Tammaru

{"title":"Effects of population density on life history traits in a moth: in search of proximate and ultimate explanations.","authors":"Kerli Kuusk, Toomas Esperk, Tiit Teder, Sille Holm, Toomas Tammaru","doi":"10.1007/s00442-026-05885-7","DOIUrl":"10.1007/s00442-026-05885-7","url":null,"abstract":"Population density often modifies the phenotypes of the members of the population. Such density-dependent phenotypic plasticity can affect basic life history traits of the organisms. In insects, a frequently observed expression of such plasticity is the crowding response (CR), where individuals growing at high densities develop faster and attain lower final sizes compared to those at low densities. This plastic change qualitatively differs from the general stress response where lower final sizes are associated with longer development periods. The adaptive significance of CR, as well as the nature of the cues that trigger CR, remains poorly understood. We performed a series of experiments to identify proximate signals leading to CR in the geometrid moth Hypomecis atomaria, a species in which larvae reared in groups consistently pupate earlier and at lower weights than those reared in isolation. Our findings reveal that CR is also induced in complete darkness, suggesting that visual cues of high population densities do not play a decisive role. CR was triggered when the larvae were separated by a mesh barrier, preventing tactile interaction between them. The presence of heterospecific lepidopteran larvae also triggered CR, though to varying degrees. By contrast, neither the presence of dipteran insects in the rearing environment nor human-inflicted tactile stimulation affected the growth schedules of H. atomaria larvae. We conclude that CR is likely induced either by chemical signals or substrate-borne vibrations caused by other larvae. In any case, CR is not a highly specific response to high densities of conspecifics, nor is it a very general reaction to unspecific disturbances. This allows us to narrow down the set of potential adaptive explanations for the phenomenon.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"208 4","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147628128","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

Behavioural responses to heat in an arid-zone bird vary with thermal, hygric and social factors. 干旱地区鸟类对热的行为反应因热、水和社会因素而异。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2026-04-06 DOI: 10.1007/s00442-026-05888-4

J R D Whyte, A E McKechnie, J K Crossley, S J Cunningham

{"title":"Behavioural responses to heat in an arid-zone bird vary with thermal, hygric and social factors.","authors":"J R D Whyte, A E McKechnie, J K Crossley, S J Cunningham","doi":"10.1007/s00442-026-05888-4","DOIUrl":"10.1007/s00442-026-05888-4","url":null,"abstract":"The severity of fitness costs resulting from behavioural trade-offs between heat dissipation and activities such as foraging is increasing with advancing climate change. In terrestrial habitats, shade and water may buffer individuals from the negative effects of heat exposure, as may load-lightening in group-living species. We tested the hypothesis that thermal and hygric properties of home ranges (shade and water availability) and social factors (group size) influence the costs associated with hot weather, using a population of white-browed sparrow-weavers (Plocepasser mahali) in the southern Kalahari Desert. Across all sparrow-weaver groups, heat avoidance (shade-seeking) and dissipation (panting) behaviours increased with increasing air temperature (Tair), whereas foraging declined. Birds occupying shadier home ranges delayed the onset of panting to higher Tair and foraged less while maintaining overall peck rates. Birds with access to water foraged more, maintained higher peck rates and sought shade at higher Tair compared to birds without. However, they did not pant more, making the mechanism underpinning their increased foraging effort unclear. Birds in larger groups both panted more overall and sought shade at lower Tair than birds in smaller groups but maintained similar overall peck rates. Taken together, these results suggest birds in shadier home ranges can forage more efficiently, buffering foraging costs at high Tair. Our data therefore suggest that some impacts of increasing Tair under climate change can be buffered by shade availability, but the impacts of water availability and social factors are less clear.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"208 4","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13053412/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147623316","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

Climate warming and drought modify galling effects on tall goldenrod. 气候变暖和干旱改变了高菊花的刺痛效应。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2026-04-04 DOI: 10.1007/s00442-026-05889-3

Emily G Parker, Kara C Dobson, Moriah L Young, Mark D Hammond, Phoebe L Zarnetske

{"title":"Climate warming and drought modify galling effects on tall goldenrod.","authors":"Emily G Parker, Kara C Dobson, Moriah L Young, Mark D Hammond, Phoebe L Zarnetske","doi":"10.1007/s00442-026-05889-3","DOIUrl":"10.1007/s00442-026-05889-3","url":null,"abstract":"Plants must respond to changing climatic conditions while continuing to defend against herbivores. While numerous studies have investigated how one type of stress affects plants, the effects of multiple abiotic and biotic stressors and their interactions are less understood. We used the Rainfall Exclusion eXperiment (REX) at the Kellogg Biological Station Long-Term Ecological Research site (KBS LTER) to quantify the individual and interactive effects of drought and warming treatments (abiotic stressors), and galling by Rhopalomyia solidaginis (biotic stress) on tall goldenrod (Solidago altissima), a common native plant species in Michigan, USA. At the end of the 2021 and 2022 growing seasons, we measured stem height and biomass as a proxy for plant productivity, and seed mass per stem as a proxy for reproductive fitness. We also measured gall biomass, larval chamber number, and larval chamber volume to reflect the effects of drought and warming on the gallmaker. We found that warming mitigated some negative galling effects; galled plants were 7.1 cm shorter than non-galled plants in ambient conditions, but under warming, there was no reduction in height for galled plants. Furthermore, drought exacerbated some galling effects: galled plants experiencing drought conditions had the lowest probability of producing seeds (0.47) compared to plants from all other treatments. Understanding how plants respond to individual abiotic and biotic stressors as well as their interactions will enhance our ability to predict plant fitness and community dynamics under new climate regimes.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"208 4","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13048925/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147616499","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

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