Trees最新文献

{"title":"An overview of cold stress responses in Eucalyptus globulus","authors":"Paula Aguayo,&nbsp;Marta Fernández,&nbsp;Claudio Balocchi,&nbsp;Sofia Valenzuela","doi":"10.1007/s00468-022-02355-4","DOIUrl":"10.1007/s00468-022-02355-4","url":null,"abstract":"<div><h3>Key message</h3><p>This article summarizes advances in cold tolerance, particularly the signaling pathways of cold genes in<i> E. globulus.</i></p><h3>Abstract</h3><p><i>Eucalyptus globulus</i> is one of the most important hardwood species used for pulp and paper production worldwide, but its productivity is limited by cold temperatures which affect their optimal development and distribution<b>.</b> Several plants increase their freezing tolerance in response to low temperatures pre-conditioning, this mechanism known as cold acclimation, is a result of a combination of physiological, biochemical and metabolic changes which depend on transcriptome modifications. This review explores the current knowledge about responses of <i>E. globulus</i> under cold stress, focusing in the first section on the physiological damage caused by cold stress in this species, whereas the second part deals with how perception of cold temperature can regulate the induction of cold acclimation, and finally, focusing on the molecular response systems involved in the cold response, to synthesize our understanding of the complex response to cold stress in <i>E. globulus</i>.</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"37 2","pages":"211 - 222"},"PeriodicalIF":2.3,"publicationDate":"2022-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00468-022-02355-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4733203","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":"A dendroecological method to examine summertime soil-moisture changes: a case study from North Carolina, USA","authors":"Avery A. Catherwood,&nbsp;Tyler J. Mitchell,&nbsp;Paul A. Knapp","doi":"10.1007/s00468-022-02353-6","DOIUrl":"10.1007/s00468-022-02353-6","url":null,"abstract":"<div><h3>Key message</h3><p>\u0000 <b>Use of co-occurring species with varying temporal sensitivities to summer soil moisture may be used as a diagnostic to determine summertime drought intensification or amelioration.</b>\u0000 </p><h3>Abstract</h3><p>The use of tree-ring data from co-occurring species with different summertime soil-moisture responses provides an opportunity to evaluate the occurrence and direction of soil-moisture changes. Here, we present a method that compares adjusted latewood growth between longleaf pine (<i>Pinus</i> <i>palustris</i> Mill.) and chestnut oak (<i>Quercus</i> <i>prinus</i> L.) from 1969 to 2018 in the Uwharrie Mountains of central North Carolina, USA. We found that adjusted latewood sensitivity to soil moisture varied between species with the strongest response in September PDSI for longleaf pine (<i>r</i> = 0.47), and July PDSI for chestnut oak (<i>r</i> = 0.61). Large (&gt; 0.20 or &lt; − 0.20) radial growth differences between species occurred during 22 years of the 50-year study period and were strongly correlated with PDSI differences (<i>r</i> = 0.74, <i>p</i> &lt; 0.001), while the correlation with the whole dataset (<i>r</i> = 0.34, <i>p</i> &lt; 0.05) was less sensitive. Major growth difference years were predominately negative (<i>n</i> = 17), suggesting that this method is more effective at detecting summers with decreasing soil moisture between mid and late summer. Overall, these results indicate that a differential response between species with dissimilar latewood formation periods may provide a means to examine potential intermonthly changes in summertime soil-moisture conditions as opposed to a single proxy value (e.g., anomalously dry, or wet) characterizing the entire summer.</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"37 2","pages":"599 - 607"},"PeriodicalIF":2.3,"publicationDate":"2022-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4593335","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":"Ecogeographical determinants of investment in chemical defences in pines","authors":"Carla S. Pimentel,&nbsp;Elsa V. Gonçalves,&nbsp;João Campôa,&nbsp;Teresa Calvão,&nbsp;Matthew P. Ayres,&nbsp;Otília Correia,&nbsp;Cristina Máguas","doi":"10.1007/s00468-022-02354-5","DOIUrl":"10.1007/s00468-022-02354-5","url":null,"abstract":"<div><h3>Key message</h3><p>\u0000 <b>Pine tree species exhibit significant levels of phenotypic variation in the investment in defences, which can be correlated with life-history traits, geographical affiliations and climate.</b>\u0000 </p><h3>Abstract</h3><p>\u0000Understanding the ecological and environmental correlates of tree defences has value for understanding forest susceptibility to pests and pathogens in a time of global change. In the present work, we assessed how life-history attributes and biogeography are related to chemical defences of pine trees in Palaearctic and Nearctic forests. We studied adult trees of ten pine species in forests of Portugal and Eastern North America. We measured total phenols (using gallic acid as a standard) and condensed tannins (as catechin hydrate equivalents) in the phloem of pine branches. Pine trees in forests of Eastern North America presented higher levels of total phenolic content in their phloem tissues than pine trees in forests in Portugal. Higher values of precipitation were correlated with higher phenolic content and higher temperatures were associated with higher levels of condensed tannins. A few life-history traits—the maximum height reached by each pine species, the age at which they start reproducing, and the size of seeds—were positively related with defences. The present work points to interactions between life-history attributes, climate, and geographic location as predictors of defensive investment in pines. The results are useful for understanding differences within and among pine forests in susceptibility to pests and pathogens.</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"37 2","pages":"361 - 372"},"PeriodicalIF":2.3,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4476466","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":"Dynamics in nonstructural carbohydrates of Fraxinus mandshurica seedlings during a progressive shade","authors":"Zhaoguo Wang,&nbsp;Chuankuan Wang","doi":"10.1007/s00468-022-02348-3","DOIUrl":"10.1007/s00468-022-02348-3","url":null,"abstract":"<div><h3>Key message</h3><p>Tissues were of different importance as NSC storage site; NSC concentration and NSC mass under C limitations were better indicators of the C balance at the organ and whole-plant level, respectively.</p><h3>Abstract</h3><p>Non-structural carbohydrates (NSC) are a critical carbon (C) source of trees when the C demand overweighs the supply of newly assimilated C. However, it remains uncertain regarding the remobilization and allocation of stored NSC when a C limitation occurs. Here, we manipulated the C balance of <i>Fraxinus mandshurica</i> seedlings by a progressive reduction of light availability from ambient conditions to moderate shade (30% of full sunlight for 3 weeks) and then to deep shade (0.1% for another 6 weeks). We measured the NSC concentration and mass in six tissues, and C-sink activities (including leaf respiration, stem respiration, biomass and its allocation) every three weeks. We found that, compared with ambient conditions, moderate shade only reduced the NSC concentration in fine roots, while deep shade reduced those in almost all of the tissues especially for starch concentrations. Likewise, the NSC mass in each tissue investigated in moderate shade was not significantly different from that in ambient conditions, but that in deep shade was consistently lower. The difference in NSC mass between the deep shade treatment and ambient was greater than that in NSC concentration. Across the organs, roots were a more critical compartment for NSC storage and remobilization than stems; both living barks and woods were important NSC storage tissues. The NSC mass fraction of stems was higher in deep shade than in ambient conditions. The decrease in NSC under deep shade significantly contributed to the lower leaf and stem respiration. Our findings highlighted the important role of NSC storage and remobilization in seedling growth and survival under deep shade.</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"37 2","pages":"309 - 317"},"PeriodicalIF":2.3,"publicationDate":"2022-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4599992","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":"How do montane plants manage to survive? Inferring from non-structural carbohydrates","authors":"Wensheng Chen,&nbsp;Huihui Ding,&nbsp;Jiangrong Li,&nbsp;Fangwei Fu,&nbsp;Yueyao Li,&nbsp;Siying Xiao,&nbsp;Di Xu,&nbsp;Jie Lu,&nbsp;Jiangping Fang","doi":"10.1007/s00468-022-02351-8","DOIUrl":"10.1007/s00468-022-02351-8","url":null,"abstract":"<div><h3>Key message</h3><p>\u0000 <b>Non-structural carbohydrates are distributed and stored in various organs, enabling plants to make a trade-off between “growth” and “resistance”, with temperature variation as the main driver.</b>\u0000 </p><h3>Abstract</h3><p>Non-structural carbohydrates (NSC) are important physiological indicators of carbon balance in plants and play a crucial ecological function in determining how plants respond to environmental changes. However, less is known about the mechanisms by which NSC change along the montane vertical climate belt gradient. In order to address this question, we investigated changes in NSC of 12 major tree species along the elevational gradients in the Sygera Mountains, southern Qinghai–Tibet Plateau. During the growing period (July–August) and dormant period (November–December) of the same phenological period, 64 woody plants were sampled for leaves, branches, trunks, and root organs. The contents of NSC, C, N, P, and K, and the main climatic factors were measured to detect the spatial and temporal characteristics of NSC content in woody plants in different elevations as well as their linkages. The results were as follows. (1) Plants seasonally allocate soluble sugars and starch. During the growing period, plants tend to store fewer non-structural carbohydrates to meet other carbon-demanding processes, such as growth or fruiting. During the dormant period, plants are committed to resisting stress and surviving winter through cooperative relationships (conversion of starch to soluble sugars). The physiological process of starch conversion to sugar may depend on whether starch concentration exceeds 5%. (2) The increasing NSC content of numerous tree species from the montane warm temperate belt to the alpine belt supports the “growth limitation” hypothesis, while the roots and leaf organs of woody plants have the most abundant carbon storage. (3) Plant nutrients (N, P, and K) promote the synthesis of NSC and regulate the quantity of soluble sugars and starch to establish a dynamic carbon balance in plants. (4) Plants accumulate NSC carbon pools in response to environmental stress (drought or low temperatures). “Low-temperature” stress is the primary factor limiting the growth of woody plants. Thus, temperature drives changes of NSC in woody plants across different elevations, while the physiological process of converting starch into soluble sugars (when starch content exceeds 5%, starch can be converted into soluble sugars) is an important mechanism that increases the tolerance of plants to abiotic stress.</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"37 2","pages":"331 - 348"},"PeriodicalIF":2.3,"publicationDate":"2022-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4230279","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":"Vessel tapering is conserved along a precipitation gradient in tropical trees of the genus Cedrela","authors":"Alexander Chambers-Ostler,&nbsp;Emanuel Gloor,&nbsp;David Galbraith,&nbsp;Peter Groenendijk,&nbsp;Roel Brienen","doi":"10.1007/s00468-022-02345-6","DOIUrl":"10.1007/s00468-022-02345-6","url":null,"abstract":"<div><h3>\u0000 <b><i>Key message</i></b>\u0000 </h3><p>\u0000 <b>The rate of vessel tapering is highly conserved across a precipitation gradient in tropical trees, pointing to a limit on tree height determined by a maximum basal vessel diameter.</b>\u0000 </p><p>Maximum tree height in the tropics decreases strongly with decreasing precipitation. The role of hydraulic architecture in controlling this variation in tree height remains unclear. The widening of conducting xylem vessels from the apex to the base of trees, also known as tapering, is important for maintaining the hydraulic conductivity along the tree stem. If in contrast vessel diameter were constant, then resistance would increase with path length constraining flow rates as tree height increases. Whilst previous research has shown that vessel diameter scales with tree height at a similar rate (similar power law exponent) across biomes and taxa, knowledge on these relationships across precipitation gradients within a single species is incomplete, especially for the tropics. Here we report how vessel density and diameter at the tree base differ for two tropical <i>Cedrela</i> species across four sites varying in precipitation from 1014 to 2585 mm year⁻¹. We find that maximum tree height decreases with decreasing precipitation across sites from 42 to 13 m. Despite the strong differences between sites in maximum tree height and water availability, tapering is indeed remarkably conserved and close to published scaling with height based on multi-species analyses. Thus, for a given tree height, basal vessel diameter does not vary between sites, whilst the maximum basal vessel size is two times smaller at the drier site (with the shortest trees) compared to the wettest site (with the tallest trees). This suggests a possible limitation of tree height determined by a maximum basal vessel diameter that can be sustained, given increasing embolism risk with increasing dryness. Our results show no hydraulic adaptation across this wetness gradient and reveal a clear relationship between maximum tree height and maximum basal vessel size.</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"37 2","pages":"269 - 284"},"PeriodicalIF":2.3,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00468-022-02345-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4141081","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":"Peak photosynthesis at summer midday in Acacia trees growing in a hyper-arid habitat","authors":"Daphna Uni,&nbsp;Efrat Sheffer,&nbsp;Gidon Winters,&nbsp;André Carvalho Lima,&nbsp;Hagar Fox,&nbsp;Tamir Klein","doi":"10.1007/s00468-022-02344-7","DOIUrl":"10.1007/s00468-022-02344-7","url":null,"abstract":"<div><h3>Key message</h3><p><b>Desert</b><i> Acacia</i><b> trees photosynthesize during the hot dry summer, and use stored carbon for summer growth</b>.</p><p>Trees that grow in hyper-arid environments can provide important insight into the role of carbon use and carbon storage for tree survival and growth in extreme conditions. <i>Acacia</i> trees, in particular, experience some of the most arid conditions in which trees can grow on the planet, enduring high temperatures, high radiation and drought. Here we measured for two years photosynthesis along the day, stem circumference growth, and seasonal changes in non-structural carbohydrates in adult <i>Acacia</i> trees in their natural hyper-arid habitat (Arava desert, southern Israel). The peak of net CO₂ assimilation was at midday in all seasons, even during summer when vapor pressure deficit was at maximum of 6 kPa and light intensities were at high levels (1800 µmol photons m⁻² s⁻¹). Tree growth started in the spring and increased in the hot summer season and during the dry fall season (autumn). Starch concentrations in the branches were highest in the winter and spring (17% in dry matter) decreasing in the summer and fall (7% in dry matter). Our observations indicated that carbon assimilated during the winter was stored in the branches as starch reserves, which were later used for tree growth in summer. Still, most of the growth was subsidized by concurrent assimilation during the dry season. These findings show that <i>Acacia</i> trees are able to photosynthesize in conditions that other trees cannot, indicating a strong potential to contribute to ecosystem carbon sequestration in warming and drying climates.</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"37 2","pages":"255 - 267"},"PeriodicalIF":2.3,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00468-022-02344-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4058308","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":"Development and characterization of EST-SSR markers in pecan (Carya illinoinensis)","authors":"Wenrui Lou,&nbsp;Yunzhou Lyu,&nbsp;Longjiao Hu,&nbsp;Xufeng Yang,&nbsp;Min Zhai,&nbsp;Jiping Xuan,&nbsp;Zhenghai Mo","doi":"10.1007/s00468-022-02347-4","DOIUrl":"10.1007/s00468-022-02347-4","url":null,"abstract":"<div><h3>Key message</h3><p>This study developed and validated a set of polymorphic and cross-transferable EST-SSR markers in pecan. 31 polymorphic primers were qualified for genetic diversity evaluation.</p><h3>Abstract</h3><p>Pecan is a famous nut tree with high nutritional value. Nowadays, few EST-SSR markers have been developed for this species. Here, 31,074 protein-coding genes of pecan with 46.43 Mb were employed for EST-SSR identification. In total, 9522 EST-SSR loci were detected from 5752 genes with a distribution frequency of 16.69% of total genes and an average density of one SSR per 4.88 kb. Among them, the di-nucleotide (44.24%) was the most abundant motif, followed by mono-, tri-, tetra-, hexa-, and penta-nucleotide repeats. In addition, a total of 7764 EST-SSR loci were distributed in UTR regions, while the rest of the 1758 were located at CDS regions. Based on the flanked sequences surrounding SSR loci, 3586 primers were successfully developed and 250 pairs were randomly selected for verification using six pecan cultivars. After amplification, 171 (68.40%) primer pairs yielded the expected bands, of which, 159 showed polymorphisms. Among the polymorphic primers, 76 pairs could be cross-amplified in four other <i>Carya</i> species (<i>Carya. laciniosa, C. ovata, C. hunanensis,</i> and <i>C. cathayensis</i>). To further characterize the usefulness of EST-SSRs, 31 polymorphic primers were subjected to assess the genetic diversity and relationship of 40 pecan lines, in which the mean number of alleles per locus and polymorphism information content were 6.90 and 0.70, respectively, suggesting the capacity of the markers to monitor high level of informativeness. Cluster analysis indicated that some accessions in the corresponding subgroup were in good agreement with their genetic backgrounds and morphological traits. The EST-SSR resources offered here constitute a valuable tool for genetic diversity analysis in pecan.</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"37 2","pages":"297 - 307"},"PeriodicalIF":2.3,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5167779","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 year-round dynamic of metabolites accumulation in Pinus sylvestris needles in permafrost zone","authors":"I. V. Sleptsov,&nbsp;V. V. Mikhailov,&nbsp;S. M. Rozhina,&nbsp;B. M. Kershengolts","doi":"10.1007/s00468-022-02346-5","DOIUrl":"10.1007/s00468-022-02346-5","url":null,"abstract":"<div><h3>Key message</h3><p><i>Pinus sylvestris</i> growing in permafrost areas demonstrates an ability to support active metabolic processes at temperatures lower than -20℃ as a result of accumulation of certain cryoprotectants and sucrose transport.</p><h3>Abstract</h3><p>The year-round dynamics of metabolites in the needles of <i>Pinus sylvestris</i> L. was examined, which may help to assess the biochemical mechanisms of adaptation to the extreme climatic conditions of the permafrost zone. Determination of primary and secondary metabolites with GC–MS, flavonoids with HPLC and temperature logging were performed throughout the year. The metabolomic approach allowed to define the metabolites accumulation of which varied with the naturally occurring seasonal changes. According to that, the metabolic profiles were divided into 4 groups each corresponding to the specific season. This division was mainly caused by the metabolites which contents were high at winter and low at summer, such as melibiose, galactinol, alanine, leucine, and glycine. We suggest a specific importance of sucrose transport in the plant metabolism during both early and late stages of climatic winter. Flavonoids were found to have a protective role at high insolation levels during spring time in the permafrost zone. The results of this study on the year-round dynamics of the content of primary and secondary metabolites in <i>P. sylvestris</i> needles suggest specific changes in biochemical processes because of plant adaptation to the extreme climatic conditions in the permafrost zone.</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"37 2","pages":"285 - 296"},"PeriodicalIF":2.3,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5169938","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":"250-Year reconstruction of pollarding events reveals sharp management changes in Iberian ash woodlands","authors":"David Candel-Pérez,&nbsp;Héctor Hernández-Alonso,&nbsp;Federico Castro,&nbsp;Gabriel Sangüesa-Barreda,&nbsp;Sven Mutke,&nbsp;Miguel García-Hidalgo,&nbsp;Vicente Rozas,&nbsp;José Miguel Olano","doi":"10.1007/s00468-022-02343-8","DOIUrl":"10.1007/s00468-022-02343-8","url":null,"abstract":"<div><h3>Key message</h3><p>Tree-ring growth of pollarded narrow-leaved ash trees in Central Spain reveals traditional management cessation in 1970 and property-specific management patterns.</p><h3>Abstract</h3><p>Tree pollarding was a dominant management strategy of European forests for centuries creating open agroforestry landscapes with important cultural and environmental values. This traditional practice has been widely abandoned in last decades with a subsequent impact in terms of biodiversity and cultural loss. Central Spain hosts the largest and best-preserved area of pollarded narrow-leaved ash (<i>Fraxinus angustifolia</i> Vahl.) woodlands in Europe. The main aim of this research is to obtain rigorous historical records of pollarding frequency to get adequate information for traditional ash management. We used dendrochronological techniques to evaluate temporal changes of pollarding frequency and rotation length. We analysed the stand level synchrony and the effect of land property on pollarding activity from 322 trees growing in eight pollard stands in Central Spain. Pollarding events were unequivocally identified at tree level by a characteristic change in growth pattern. We identified 2426 tree-level pruning events with the first event dated in 1777. Historical pruning recurrence ranged between 5 and 10 years with higher pollarding frequency on private lands. Pruning events within each site were synchronous, suggesting the existence of a rotational schema within each stand. Pruning frequency decreased drastically in the 1970s matching with the depopulation of rural areas and the general abandonment of traditional practices. Pollarding practices have recovered in recent decades although with lower intensity and lacking the synchronic historical patterns. Providing technical and economic support to make this traditional activity profitably would have strong environmental revenue due the multiple ecosystem services provided by pollarded ashes.</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"36 6","pages":"1909 - 1921"},"PeriodicalIF":2.3,"publicationDate":"2022-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00468-022-02343-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4919387","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}