Trees最新文献

{"title":"Summer climatic controls on oak’s radial growth: a multilevel meta-analysis of climate-growth relationships and moderator effects","authors":"Mingyue Xu,&nbsp;Xiaomin Zeng,&nbsp;Quanxi Li,&nbsp;Xiaoqi Chen,&nbsp;Xiaohong Liu,&nbsp;Haiqin Zhang","doi":"10.1007/s00468-026-02841-z","DOIUrl":"10.1007/s00468-026-02841-z","url":null,"abstract":"<div><h3>\u0000 <b><i>Key message</i></b>\u0000 </h3><p><b>Oak radial growth responses to summer climate are primarily structured by water-balance dynamics and shaped by environmental context and species drought tolerance.</b></p><h3>Abstract</h3><p>Global warming is increasingly altering climate constraints on forest growth, particularly for widespread and ecologically important tree taxa such as oak, which dominate many temperate forests and provide critical ecosystem functions. However, the relative importance of different summer climatic drivers and the mechanisms underlying their effects on oak radial growth remain poorly synthesized across the Northern Hemisphere. Employing a multilevel meta-analytic approach, we systematically quantified the associations between summer climatic variables (temperature, precipitation, and the Standardized Precipitation Evapotranspiration Index (SPEI)) and oak radial growth based on 241 effect sizes from 60 publications, while also evaluating the moderating roles of leaf habit, drought tolerance, region, proxy type, seasonal timing (month), and SPEI timescale. Results indicated that summer temperature was negatively associated with oak radial growth, whereas summer precipitation and SPEI showed positive associations. Precipitation sensitivity was strongest in June, while the pooled SPEI effect across reported timescales was the strongest among the three climatic factors and increased with SPEI timescale. SPEI responses also varied geographically and with species-level drought tolerance, highlighting the context dependence of oak sensitivity to summer water availability. Overall, these findings emphasize the importance of water availability for oak radial growth during the summer growing season and provide a quantitative basis for understanding its climate sensitivity under future warming.</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"40 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149339162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The relationship between the amount of black carbon particles retained on leaves and leaf chemical and physical characteristics in mature trees of Lithocarpus edulis and Ilex rotunda","authors":"Kei Takahashi,&nbsp;Tomoki Waragai,&nbsp;Kosuke Mitou,&nbsp;Maria Matsumoto,&nbsp;Hiroyuki Sase,&nbsp;Naoto Murao,&nbsp;Tatsuya Fukazawa,&nbsp;Sadamu Yamagata,&nbsp;Masahiro Yamaguchi,&nbsp;Hisashi Murakami,&nbsp;Satoshi Nakaba,&nbsp;Kaoruko Mizukawa,&nbsp;Hideshige Takada,&nbsp;Makoto Watanabe,&nbsp;Takeshi Izuta","doi":"10.1007/s00468-026-02843-x","DOIUrl":"10.1007/s00468-026-02843-x","url":null,"abstract":"<div><p>Urban greening trees reduce atmospheric fine particulate matter (PM), including black carbon (BC) particles, by rigidly retaining them on their leaves due to the leaf epicuticular wax and leaf surface microstructure. This study investigated the relationship between the interspecific difference in the amount of BC particles retained on the leaves, and leaf chemical and physical characteristics of mature <i>Lithocarpus edulis</i> and <i>Ilex rotunda</i> trees in an urban area of Tokyo, Japan. From May to November 2023, the amount of leaf epicuticular wax and leaf surface roughness of <i>L. edulis</i> were consistently higher than those of <i>I. rotunda</i>. This is because <b>t</b>he leaves of <i>L. edulis</i> exhibited a thick-flat epicuticular wax layer on the adaxial surface and a considerably rough abaxial surface with trichomes located within cracks of film-shaped wax. From May to July, the leaf BC amounts of <i>L. edulis</i> were higher than those of <i>I. rotunda</i>. However, the leaf BC amounts of <i>I. rotunda</i> were higher than those of <i>L. edulis</i> in October and November. We developed an assessment index of leaf epicuticular wax hydrophobicity (Hw_LS) based on the chemical composition (e.g., alkanes) of the wax per unit leaf surface area (LSA). Throughout the experimental period, the Hw_LS showed a strong positive correlation with the leaf BC amount of both tree species. This study is the first to reveal that both leaf chemical and physical characteristics regulate the ability of mature urban greening trees to retain atmospheric BC particles on the leaves.</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"40 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149338923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Accurate crossdating for silver maple chronology development in the Upper Mississippi River floodplain","authors":"Matthew L. Trumper,&nbsp;Daniel Griffin,&nbsp;Lydia Voth Rurup,&nbsp;Daniel J. Crawford,&nbsp;Alan Toczydlowski,&nbsp;Daniel M. Nielsen,&nbsp;Andrew R. Meier,&nbsp;Molly Van Appledorn,&nbsp;Marcella A. Windmuller-Campione","doi":"10.1007/s00468-026-02835-x","DOIUrl":"10.1007/s00468-026-02835-x","url":null,"abstract":"<div><h3>Key Message</h3><p>Emerging technologies facilitated effective crossdating of silver maple tree rings, revealing synchronous growth patterns and highlighting the dendrochronological potential of this species.</p><h3>Abstract</h3><p>Silver maple (<i>Acer saccharinum</i> L.) is a fast-growing, flood-tolerant species common in bottomland forests of eastern North America. Tree-ring research on silver maple is limited due to the species’ relatively short lifespan and reputation for indistinct rings. Here, we investigated crossdating and growth patterns of silver maple trees from 12 sites along the Upper Mississippi River floodplain. Crossdating this species was challenging due to the presence of false, micro, and locally absent rings. Despite these challenges, we successfully developed 12 silver maple chronologies by combining traditional dendrochronological methods with high-resolution imaging of specimens and an image-based approach to measuring rings and annotating anatomical features. Silver maple trees exhibited high growth variability, robust site-level crossdating (0.50–0.68 mean interseries correlations), and a common regional growth signal, including wide marker rings that were synchronous among sites and coincided with major flood events in the Upper Mississippi River (1965, 1986, 1993, 2001, 2011). The chronologies developed here may have a variety of ecological and management applications, including accurate determination of tree age and analyses of growth response to flooding. Our study demonstrates the considerable dendrochronological potential of silver maple from this region.</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"40 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00468-026-02835-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149338665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrated targeted metabolomic and transcriptomic analysis of Aijiao Oolong tea flowers at two developmental stages","authors":"Xinying Lin,&nbsp;Shanshan Zeng,&nbsp;Jing Chen,&nbsp;Mengya Gu,&nbsp;Xianzhou Huang,&nbsp;Mengting Xu,&nbsp;Xianhui Wu,&nbsp;Naixing Ye","doi":"10.1007/s00468-026-02834-y","DOIUrl":"10.1007/s00468-026-02834-y","url":null,"abstract":"<div><h3>\u0000 <i>Key Message</i>\u0000 </h3><p><b>In </b><b><i>Camellia sinensis</i></b> <b>'Aijiao Oolong', from the bud stage to the full-bloom stage, amino acids (especially theanine) significantly increased, whereas catechins and alkaloids decreased. Transcriptomic analysis revealed extensive developmental-stage-associated changes in 8 hormone-related signaling pathways, among which auxin signaling contained the largest number of DEGs.</b></p><h3>Abstract</h3><p> As reproductive, non-leaf organs of tea plants, tea flowers are rich in bioactive substances and possess great potential for high-value utilization. However, the mechanisms underlying flower development in the distinctive oolong tea cultivar Aijiao Oolong remain unclear. This study integrated targeted metabolomics and transcriptomics to analyze tea flowers at the bud and full-bloom stages. The sum of the 25 quantified free amino acids was 35.26 mg/g at the full-bloom stage, 1.66-fold that at the bud stage (21.28 mg/g). 18 quantified free amino acids showed significantly higher contents at the full-bloom stage, whereas aspartic acid showed a significantly lower content and six amino acids showed no significant difference. Theanine was the most abundant quantified free amino acid and increased from 8.84 to 13.98 mg/g. In contrast, the sums of the nine quantified catechins and three quantified purine alkaloids were lower at the full-bloom stage. Transcriptomic analysis identified 122 DEGs associated with 8 hormone-related signaling pathways. Among them, auxin signaling contained the largest number of DEGs and exhibited extensive transcriptional changes, suggesting that auxin-related signaling may be prominently involved in flower development. Integrated pathway analysis indicated that changes in nitrogen and amino-acid metabolism were associated with higher amino-acid contents, whereas changes in flavonoid and purine metabolism were associated with lower catechin and caffeine contents. These findings provide an integrated view of developmental-stage-associated metabolic and transcriptional changes in Aijiao Oolong tea flowers, providing insights into flower development and the potential high-value utilization of tea flowers.</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"40 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149234302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genetic diversity and fruit biometry variability of fruits of Acrocomia spp. interspecific hybrids","authors":"Paloma Vieira Brás,&nbsp;Sérgio Yoshimitsu Motoike,&nbsp;Pauliana Aparecida da Silva,&nbsp;Ana Carolina Melo Ribeiro,&nbsp;Míria Grasiele Casado da Silva,&nbsp;Kacilda Naomi Kuki,&nbsp;Evellyn Giselly de Oliveira Couto,&nbsp;Gleison Augusto dos Santos","doi":"10.1007/s00468-026-02840-0","DOIUrl":"10.1007/s00468-026-02840-0","url":null,"abstract":"<div><p>The macaw palm (<i>Acrocomia</i> spp.) stands out as a promising species for the sustainable production of vegetable oil due to its wide adaptability and potential use in multiple production chains. This study evaluated 11 genotypes, including parental genotypes and F₁ hybrids, for fruit biometric traits and mesocarp oil content, aiming to identify individuals with greater potential for genetic improvement programs. Analyses were carried out in plant material belonging to the Active Germplasm Bank of Macaw palm of the Federal University of Viçosa. The variables were subjected to analyses of variance, phenotypic correlation, and genetic diversity based on Mahalanobis generalized distance and the Tocher and UPGMA clustering methods. A broad phenotypic and genetic variability was observed among genotypes. Individual A4 exhibited larger fruits with higher mass and a greater pulp yield index, whereas the parent 47 − 1 showed the highest mesocarp oil content (55.31%). High heritability estimates (h² &gt; 50%) and genetic accuracies confirmed the predominance of genetic over environmental effects. The clustering methods revealed three major genetic groups, reflecting the existing intra- and interspecific diversity. The results indicate a high potential for selection gains and reinforce the importance of biometric characterization of fruits and characterization of oil content to identify superior macaw palm genotypes aimed at expanding cultivation and promoting sustainable agro-industrial utilization.</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"40 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00468-026-02840-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrated analysis of transcriptomic and metabolomic reveals the adaptation mechanism in sandalwood (Santalum album L.) under heat stress","authors":"Xiupeng Wang,&nbsp;Xinyi Zheng,&nbsp;Junhao Ye,&nbsp;Xu Hu,&nbsp;Guiwen Huang,&nbsp;Xinruo He,&nbsp;Baokun Ma,&nbsp;Minqiang Tang","doi":"10.1007/s00468-026-02839-7","DOIUrl":"10.1007/s00468-026-02839-7","url":null,"abstract":"<div><p>Global warming intensifies high-temperature stress, threatening the growth and heartwood formation of <i>Santalum album</i> L. To elucidate the molecular basis of the heat-stress response, we conducted transcriptomic and metabolomic analyses on sandalwood seedlings under heat stress. Results showed: (1) Transcriptome identified 2,501 and 866 differentially expressed genes (DEGs) in TR0 vs. TR1 and TR1 vs. TR2 respectively (TD stands for metabolome samples, TR stands for transcriptome samples; suffix numbers correspond to sampling time points: 0 = day 0 before stress, 1 = day 1 of stress, 2 = day 3 of stress), mainly involving pathways such as plant hormone signal transduction, endoplasmic reticulum protein processing, heat shock protein regulation, and reactive oxygen species (ROS) clearance; (2) 26,244 and 20,451 metabolic ion features were detected in the positive and negative ion modes (PI and NI), respectively. The number of differentially expressed metabolites (DEMs) increased with stress time, and key metabolites of phenylpropanoid pathway such as 4-Hydroxycinnamic acid changed significantly. (3) Integrated analysis indicated that phenylpropanoid biosynthesis pathway was core response pathway, with high expression of key enzyme genes (<i>PAL</i>,<i> C4H</i>,<i> 4CL</i>). Expression level of the <i>CHS</i> gene (SA08G01315) in the flavonoid branch was significantly induced, which may be involved in antioxidant defense under heat stress. In the lignin branch, <i>HCT</i> transcript levels increased while <i>COMT</i> decreased sharply—a shift potentially linked to the wilting phenotype on day 3. Crucial enzyme genes like <i>CAD</i> were also highly expressed, indicating enhanced lignin monomer biosynthesis potential. Transcription factors (TFs) including <i>ERF</i> and <i>MYB</i> participated in pathway regulation. This study identified candidate key pathways and genes associated with the heat stress response in sandalwood, providing scientific evidence for subsequent variety improvement, domestication, and mechanistic research on plant thermal adaptation.</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"40 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149188965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Xylogenesis and wood anatomical traits of Pinus pinaster under different resin tapping regimes","authors":"Ana Carvalho,&nbsp;Filipe Campelo,&nbsp;Cristina Nabais,&nbsp;Núria Garcia-Forner","doi":"10.1007/s00468-026-02837-9","DOIUrl":"10.1007/s00468-026-02837-9","url":null,"abstract":"<div><h3>\u0000 <b><i>Key Message</i></b>\u0000 </h3><p><b>Resin extraction modifies xylogenesis dynamics while maintaining annual xylem increment, inducing anatomical adjustments associated with hydraulically safer xylem traits. Traditional tapping appeared to provide the most balanced trade-off between resin yield and wood formation. </b></p><h3>Abstract</h3><p>Resin extraction in maritime pine (<i>Pinus pinaster</i> Aiton) constitutes a metabolic sink that theoretically competes with cambial activity for carbon resources. To mitigate potential wood formation impacts, shortened tapping periods are often proposed, yet their physiological effect remains unclear. This study investigated the impact of Traditional (March–October) versus Shortened (June–October) resin tapping regimes on annual radial increment, xylogenesis kinetics, and wood anatomy in a stand in central Portugal. Resin extraction did not reduce annual tree-ring width or total tracheid production compared to untapped Control trees. However, tapping altered the phenology of wood formation. While Control trees exhibited a typical Mediterranean bimodal growth pattern with a summer quiescence, tapped trees shifted to a continuous, prolonged period of wood formation, maintaining cambial activity into summer and late autumn to compensate for lower daily cell production rates. Anatomically, resin-tapped trees developed xylem characterized by narrower lumens and thicker cell walls, suggesting possible structural adjustments in xylem formation that may be associated with hydraulic function. The Shortened regime was not associated with clear advantages in resin production or wood formation dynamics. The Traditional method appeared to be the best silviculture option for co-production under the conditions evaluated in this study, with <i>P. pinaster</i> demonstrating sufficient plasticity to sustain both secondary growth and defense through temporal and anatomical adjustments.</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"40 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149132722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of the miR396 family in Larix kaempferi suggests potential involvement in hormone-responsive somatic embryogenesis","authors":"Yuqin Huang,&nbsp;Ruxin Zhang,&nbsp;Junchen Wang,&nbsp;Xin Li,&nbsp;Chenghao Li,&nbsp;Liwang Qi,&nbsp;Lifeng Zhang","doi":"10.1007/s00468-026-02836-w","DOIUrl":"10.1007/s00468-026-02836-w","url":null,"abstract":"<div><h3>\u0000 <b><i>Main conclusion</i></b>\u0000 </h3><p><b>Seven LkMIR396 precursor genes were identified in Larix kaempferi, and their developmental and hormone responsive expression patterns suggest potential involvement in somatic embryogenesis. </b></p><h3>Abstract</h3><p> MicroRNA396 (miR396) is a highly conserved small RNA that regulates plant growth and development by targeting GROWTH-REGULATING FACTOR (GRF) transcription factors. However, its functions in gymnosperms, particularly conifers, remain poorly understood. In this study, seven precursor genes of LkMIR396 were cloned and identified from Larix kaempferi, all of which form typical stem-loop structures and produce three distinct mature Lk-miR396 sequences. The LkMIR396 family exhibited rapid and differential responses to exogenous hormones in embryogenic cell masses, with jasmonic acid (JA) strongly suppressing expression of all members. Heterologous overexpression of Lkpre-MIR396b1 in Arabidopsis thaliana significantly reduced rosette leaf area, length, and width accompanied by reduced expression of several predicted AtGRF targets. This effect may be achieved by attenuation of cytokinin (CK) signaling and activation of the JA pathway, as revealed by integrated transcriptome and metabolome analysis. During somatic embryogenesis, LkMIR396 family members showed low expression levels at early stages and a significant increase during the cotyledon stage (21–28 days), suggesting a potential association in cotyledon development. These results support the functional compatibility and possible conservation of the miR396–GRF regulatory module across seed plants. However, the direct functions of LkMIR396 during L. kaempferi somatic embryogenesis remain to be experimentally validated. This study provides a foundation for understanding the evolution and potential developmental functions of the miR396 family in conifers and identifies candidate regulatory relationships for future functional investigation.</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"40 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149132721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Robust recovery: resprouting and water stress response of a mixed evergreen forest following wildfire and salvage logging","authors":"Hugh Leonard,&nbsp;Jay Alvarado,&nbsp;Catelyn Baker,&nbsp;Jarmila Pittermann","doi":"10.1007/s00468-026-02823-1","DOIUrl":"10.1007/s00468-026-02823-1","url":null,"abstract":"<div><h3>Key Message</h3><p>Post-wildfire salvage logging did not significantly impact the physiological recovery of resprouts in four evergreen hardwood tree species, suggesting salvage logging can be an effective post-fire management practice in mixed evergreen forests.</p><h3> Abstract</h3><p>Wildfires are threatening forest recovery worldwide due to climate change driven increases in severity and frequency. An important consideration for recovery is the post-fire land management practices, such as salvage logging, which can act as a secondary disturbance in forest communities. While much research has been done on certain forest types following wildfire and salvage logging (e.g., economically valuable conifer forests), mixed evergreen hardwood systems are extremely understudied. Here we investigated the impact of high severity wildfire and post-fire salvage logging on the physiological recovery of four resprouting evergreen tree species: Pacific madrone (<i>Arbutus menziesii</i>), tanoak (<i>Notholithocarpus densiflorus</i>), coast live oak (<i>Quercus agrifolia</i>), and California bay (<i>Umbellularia californica</i>). We collected water potential, hydraulic, anatomical and leaf data on resprouts occurring at the intact and salvage logged sites, in addition to microclimate data, over a period of two years. We found few significantly different trait effects as a result of salvage logging, suggesting a robust recovery ability of these tree species to repeated disturbance events.</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"40 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00468-026-02823-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149133040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Do cork oak trees grow in the dry, hot summer of the mediterranean climate?","authors":"Augusta Costa,&nbsp;Javier Vázquez-Piqué,&nbsp;Paolo Cherubini","doi":"10.1007/s00468-026-02828-w","DOIUrl":"10.1007/s00468-026-02828-w","url":null,"abstract":"<div><p>Monitoring stem radial intra-annual growth dynamics is a useful approach for characterising tree growth responses to climate change. In the Mediterranean there have been only a few studies reporting growth responses of cork oak (<i>Quercus suber</i> L.) to seasonal water shortages. In this study, we focused on direct monitoring of intra-annual radial growth of mature cork oaks over nine complete years, under a 10-year cork harvesting cycle. Band dendrometers were used to assess growth seasonality in two contrasting sites regarding dryness. We hypothesised that summer dormancy and growth bimodality could vary between sites as they are strongly dependent on environmental conditions. Also, we hypothesised that within sites, growth bimodality intensity might vary over the years following cork harvesting disturbance. Our results revealed that growth bimodality was dominant at the drier site, with trees experiencing growth constraints under high temperatures and lower precipitation at short timescales. In contrast, trees at the wetter site exhibited a consistent summer growth, with high plasticity and responsiveness in their growth phenology, revealing the ability to acclimate in longer timescales. The coupling effects of cork harvesting and growth patterns enhanced the trees’ site-dependent growth strategies. At drier site, trees´ complacent radial growth responses maintain constant growth phenological phases, e.g., timings, and achieve higher peaks with higher growth rates, mainly in the spring (yearly growth range between 9.2 mm.yr^− 1 and 4.4 mm.yr^− 1). At the wetter site, tree’s growth drastic responses are due to varying growth timings and highly sensitive growth peaks and rates (yearly growths ranged between 17.5 mm.yr^− 1 and 5.2 mm.yr^− 1).</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"40 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00468-026-02828-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149133042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}