The beneficial effects of smoke and its constituents, karrikinolide (KAR1) and cyanohydrin glyceronitrile, on the germination of Mediterranean lowland species are well‐documented. However, very little is known about the role of these signals on the germination of plants at higher altitudes. In addition, lignin‐derived chemicals, such as syringaldehyde (SAL), have recently been proposed as overlooked cues for smoke‐induced germination. To address these gaps in the literature, we investigated the effects of smoke‐water and SAL on the germination of 10 midland species growing on serpentine soils. We also sought to determine whether SAL interacts with KAR1 and/or mandelonitrile (MAN, a cyanohydrin) to enhance seed germination. The results show that smoke‐water significantly improved the germination of three species (Barbarea duralii, Digitalis cariensis and Turritis laxa). SAL, on the other hand, had no positive effect on the germination of the 10 species tested. Furthermore, three smoke‐sensitive species and Verbascum cariense responded to KAR1 and/or MAN. Finally, SAL did not exert any synergistic effects on germination in interaction with KAR1 and MAN. In conclusion, we provide evidence that smoke is an important germination cue also for Mediterranean midland species. Moreover, SAL did not play a role in stimulating germination in smoke‐sensitive species, either independently or in combination with other smoke chemicals.
烟雾及其成分卡里基内酯（KAR1）和氰氢甘油腈对地中海低地物种发芽的有利影响已得到充分证实。然而，这些信号对高海拔植物发芽的作用却知之甚少。此外，木质素衍生化学物质，如丁香醛（SAL），最近也被认为是烟雾诱导发芽的被忽视的线索。为了填补这些文献空白，我们研究了烟水和 SAL 对生长在蛇纹石土壤上的 10 种中部地区物种发芽的影响。我们还试图确定 SAL 是否与 KAR1 和/或曼德拉腈（MAN，一种氰醇）相互作用，从而提高种子萌发。结果表明，烟水能显著提高三种植物（Barbarea duralii、Digitalis cariensis 和 Turritis laxa）的萌发率。另一方面，SAL 对测试的 10 个物种的萌发没有积极影响。此外，三个对烟雾敏感的物种和 Verbascum cariense 对 KAR1 和/或 MAN 有反应。最后，在与 KAR1 和 MAN 的相互作用中，SAL 没有对萌芽产生任何协同效应。总之，我们提供的证据表明，烟雾也是地中海中部地区物种的重要萌发线索。此外，无论是单独使用还是与其他烟雾化学物质结合使用，SAL 对烟雾敏感物种的萌芽都没有刺激作用。
{"title":"Germination of 10 midland plant species from the eastern Mediterranean Basin: effects of smoke, syringaldehyde, karrikinolide and cyanohydrin","authors":"Şükrü Serter Çatav, Kenan Akbaş, Yaren Fulya Kaplan, Ceren Kızıl, Betül Bürün","doi":"10.1111/njb.04457","DOIUrl":"https://doi.org/10.1111/njb.04457","url":null,"abstract":"The beneficial effects of smoke and its constituents, karrikinolide (KAR<jats:sub>1</jats:sub>) and cyanohydrin glyceronitrile, on the germination of Mediterranean lowland species are well‐documented. However, very little is known about the role of these signals on the germination of plants at higher altitudes. In addition, lignin‐derived chemicals, such as syringaldehyde (SAL), have recently been proposed as overlooked cues for smoke‐induced germination. To address these gaps in the literature, we investigated the effects of smoke‐water and SAL on the germination of 10 midland species growing on serpentine soils. We also sought to determine whether SAL interacts with KAR<jats:sub>1</jats:sub> and/or mandelonitrile (MAN, a cyanohydrin) to enhance seed germination. The results show that smoke‐water significantly improved the germination of three species (<jats:italic>Barbarea duralii</jats:italic>, <jats:italic>Digitalis cariensis</jats:italic> and <jats:italic>Turritis laxa</jats:italic>). SAL, on the other hand, had no positive effect on the germination of the 10 species tested. Furthermore, three smoke‐sensitive species and <jats:italic>Verbascum cariense</jats:italic> responded to KAR<jats:sub>1</jats:sub> and/or MAN. Finally, SAL did not exert any synergistic effects on germination in interaction with KAR<jats:sub>1</jats:sub> and MAN. In conclusion, we provide evidence that smoke is an important germination cue also for Mediterranean midland species. Moreover, SAL did not play a role in stimulating germination in smoke‐sensitive species, either independently or in combination with other smoke chemicals.","PeriodicalId":54716,"journal":{"name":"Nordic Journal of Botany","volume":"26 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141771694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A newly discovered species, Stereochilus linearifolius (Vandeae, Orchidaceae), which was found in Maguan (Yunnan Province, China), is described and illustrated. Detailed morphological examination revealed that S. linearifolius exhibits similarities to S. dalatensis, however, it distinguishes itself in terms of plant size, leaf dimensions (length and width), sepal width, spur shape, midlobe shape, as well as the coloration of lip, anther cap and stigma.
{"title":"Stereochilus linearifolius (Orchidaceae): a new species of Orchidaceae (Epidendroideae: Vandeae: Aeridinae) from Yunnan, China","authors":"Pengyu Wu, Yutian Zhang, Qiantong Shan, Zhoudong Han, Ziyang Wang, Yajuan Lou, Xinyuan Qin, Zhifeng Xu","doi":"10.1111/njb.04452","DOIUrl":"https://doi.org/10.1111/njb.04452","url":null,"abstract":"A newly discovered species, <jats:italic>Stereochilus linearifolius</jats:italic> (Vandeae, Orchidaceae), which was found in Maguan (Yunnan Province, China), is described and illustrated. Detailed morphological examination revealed that <jats:italic>S. linearifolius</jats:italic> exhibits similarities to <jats:italic>S. dalatensis</jats:italic>, however, it distinguishes itself in terms of plant size, leaf dimensions (length and width), sepal width, spur shape, midlobe shape, as well as the coloration of lip, anther cap and stigma.","PeriodicalId":54716,"journal":{"name":"Nordic Journal of Botany","volume":"67 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141771590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Helictotrichon uniyalii corresponds to the genus Tzveleviochloa based on the lemma apex, lodicules, and ovary morphological features. Therefore, here, a new combination, Tzveleviochloa uniyalii, is proposed. In addition, we have provided amended descriptions, taxonomic notes, habitat, and distributional range updates with a new record of the flora of Himachal Pradesh, illustration, and color photographs.
{"title":"Tzveleviochloa uniyalii comb. nov. (Poaceae, Aveninae): taxonomic status and an update on distributions in India","authors":"Dileshwar Prasad, Smita Tiwari, Sangam Sharma, Rekha Yadav, Priyanka Agnihotri","doi":"10.1111/njb.04349","DOIUrl":"https://doi.org/10.1111/njb.04349","url":null,"abstract":"<jats:italic>Helictotrichon uniyalii</jats:italic> corresponds to the genus <jats:italic>Tzveleviochloa</jats:italic> based on the lemma apex, lodicules, and ovary morphological features. Therefore, here, a new combination, <jats:italic>Tzveleviochloa uniyalii</jats:italic>, is proposed. In addition, we have provided amended descriptions, taxonomic notes, habitat, and distributional range updates with a new record of the flora of Himachal Pradesh, illustration, and color photographs.","PeriodicalId":54716,"journal":{"name":"Nordic Journal of Botany","volume":"72 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141785168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Plant ecotypes in the 21st century: from local adaptation to speciation and conservation","authors":"Stefan Andersson, Renate A. Wesselingh","doi":"10.1111/njb.04547","DOIUrl":"https://doi.org/10.1111/njb.04547","url":null,"abstract":"","PeriodicalId":54716,"journal":{"name":"Nordic Journal of Botany","volume":"53 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141510816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Two new species of ornamental banana, namely Musa siangensis Taid, S.S. Singh et Gajurel and Musa bracteata S.S. Singh, Gajurel et Taid collected in Arunachal Pradesh, India, are described. Morphologically, both the new species are close to Musa arunachalensis A. Joe, Sreejith et M. Sabu. Morphological characters are described and illustrated with colour photographs for easy recognition. A key to the closely related species and a table of comparison enumerating selected morphological characters are also provided. The new species are further supported by molecular rbcL sequence data.
本文描述了在印度阿鲁纳恰尔邦采集的两个观赏香蕉新品种，即 Musa siangensis Taid, S.S. Singh et Gajurel 和 Musa bracteata S.S. Singh, Gajurel et Taid。从形态上看，这两个新种都接近于 Musa arunachalensis A. Joe, Sreejith et M. Sabu。描述了形态特征，并配有彩色照片，便于识别。此外，还提供了近缘种的检索表和列举所选形态特征的比较表。分子 rbcL 序列数据进一步支持了这些新物种。
{"title":"Two new species of wild ornamental Musa (Musaceae) from Arunachal Pradesh, northeast India","authors":"Simanta Taid, Sorokhaibam Sureshkumar Singh, Padma Raj Gajurel","doi":"10.1111/njb.04271","DOIUrl":"https://doi.org/10.1111/njb.04271","url":null,"abstract":"Two new species of ornamental banana, namely <jats:italic>Musa siangensis</jats:italic> Taid, S.S. Singh et Gajurel and <jats:italic>Musa bracteata</jats:italic> S.S. Singh, Gajurel et Taid collected in Arunachal Pradesh, India, are described. Morphologically, both the new species are close to <jats:italic>Musa arunachalensis</jats:italic> A. Joe, Sreejith et M. Sabu. Morphological characters are described and illustrated with colour photographs for easy recognition. A key to the closely related species and a table of comparison enumerating selected morphological characters are also provided. The new species are further supported by molecular <jats:italic>rbc</jats:italic>L sequence data.","PeriodicalId":54716,"journal":{"name":"Nordic Journal of Botany","volume":"34 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141530229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yong‐Yan Liang, Jie Huang, Hai‐Ling Chen, Chun‐Rui Lin
Aspidistra shangsiensis, a new species of Asparagaceae from southern Guangxi, China, is described and illustrated. The new species is similar to A. hainanensis in the flower color and shape, but differs by the leaf blade narrowly lanceolate, 28–45 × 4.0–6.5 cm, perianth lobes 8–10, stigma upper surface with fine radial grooves distally. This new species is only known from Shangsi County in Guangxi, China.
{"title":"Aspidistra shangsiensis (Asparagaceae), a new species from Guangxi, China","authors":"Yong‐Yan Liang, Jie Huang, Hai‐Ling Chen, Chun‐Rui Lin","doi":"10.1111/njb.04212","DOIUrl":"https://doi.org/10.1111/njb.04212","url":null,"abstract":"<jats:italic>Aspidistra shangsiensis</jats:italic>, a new species of Asparagaceae from southern Guangxi, China, is described and illustrated. The new species is similar to <jats:italic>A. hainanensis</jats:italic> in the flower color and shape, but differs by the leaf blade narrowly lanceolate, 28–45 × 4.0–6.5 cm, perianth lobes 8–10, stigma upper surface with fine radial grooves distally. This new species is only known from Shangsi County in Guangxi, China.","PeriodicalId":54716,"journal":{"name":"Nordic Journal of Botany","volume":"38 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141510817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A new species of Psammogeton (Apiaceae) found in Jammu district of Jammu and Kashmir, India, is described and illustrated. It is closely allied to Psammogeton canescens and P. shivalikensis but differing from them in having noticeably radical and deeply ternate leaves, with acuminate apex, peduncle 1–3 cm long, nearly smooth or faintly ribbed, flowers dull white or pale yellow, an elongated stylopodium, fruits with hair that is nearly twice the fruit width. Together with the images, a distribution map and comparative account with morphological and phenological details of closely related P. canescens and P. shivalikensis are provided. Keys to all five species are also included.
本文描述了在印度查谟和克什米尔查谟地区发现的 Psammogeton（Apiaceae）的一个新种，并绘制了插图。shivalikensis 密切相关，但与它们不同的是，它的叶片明显偏激，呈深三出状，先端渐尖，花序梗长 1-3 厘米，近乎光滑或有微弱的棱，花色暗白或淡黄，花柱基细长，果实上的毛几乎是果实宽度的两倍。除图片外，还提供了分布图以及与 P. canescens 和 P. shivalikensis 亲缘关系密切的形态和物候细节的比较说明。此外还提供了所有五个物种的钥匙。
{"title":"Psammogeton raniae‐magotrae sp. nov. (Apiaceae) from Jammu and Kashmir, India","authors":"B. L. Bhellum","doi":"10.1111/njb.04176","DOIUrl":"https://doi.org/10.1111/njb.04176","url":null,"abstract":"A new species of <jats:italic>Psammogeton</jats:italic> (Apiaceae) found in Jammu district of Jammu and Kashmir, India, is described and illustrated. It is closely allied to <jats:italic>Psammogeton canescens</jats:italic> and <jats:italic>P. shivalikensis</jats:italic> but differing from them in having noticeably radical and deeply ternate leaves, with acuminate apex, peduncle 1–3 cm long, nearly smooth or faintly ribbed, flowers dull white or pale yellow, an elongated stylopodium, fruits with hair that is nearly twice the fruit width. Together with the images, a distribution map and comparative account with morphological and phenological details of closely related <jats:italic>P. canescens and P. shivalikensis</jats:italic> are provided<jats:italic>.</jats:italic> Keys to all five species are also included.","PeriodicalId":54716,"journal":{"name":"Nordic Journal of Botany","volume":"176 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141510851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mingyue Zhou, Melanie S. Montes, Tore Mattsson, Tomas Burén, Mikael Hedrén, Ulf Ryde
We studied Rubus wahlbergii and related species in R. sect. Corylifolii, primarily in Sweden, using DNA microsatellites. The results show that the material can be divided into three species: R. wahlbergii s.s. which occurs along the Swedish coast from Bohuslän to Uppland, R. nordicus which occurs on the western coast all the way south to north‐western Skåne, and a previously unrecognized taxon which we here describe as R. wahlbergioides. The latter has scattered localities in Halland, Skåne, Blekinge, Öland and Småland, but is common around Kivik in Skåne and Kalmar in Småland. It is characterised by leaves that are without felt underneath, terminal leaflets with a somewhat more triangular shape and coarser serration than those of R. wahlbergii and also has more glands on the stem and the inflorescence. In the northern part of the distribution, R. nordicus is easily distinguished morphologically from R. wahlbergii, e.g. by a strong tendency to form 7‐foliolate leaves, but in Skåne and Halland, the two species are harder to distinguish. Still, genetically R. nordicus is more similar to R. sordirosanthus than to R. wahlbergii s.s.
我们主要在瑞典利用 DNA 微卫星对 Rubus wahlbergii 和 R. sect.Corylifolii 中的相关物种。结果表明，这些材料可分为三个物种：nordicus 分布在西海岸，一直向南延伸到斯科内省西北部，还有一个以前未被发现的类群，我们在此将其描述为 R. wahlbergioides。后者在哈兰德、斯科纳、布莱金、厄兰和斯莫兰有零星分布，但在斯科纳的基维克和斯莫兰的卡尔马附近很常见。它的特点是叶片下面没有毡，顶生小叶的形状略呈三角形，锯齿比 R. wahlbergii 更粗，茎和花序上的腺体也更多。nordicus 与 R. wahlbergii 很容易从形态上区分开来，例如它们都有形成 7 小叶的强烈倾向，但在斯科纳省和哈兰德省，这两个物种就很难区分了。不过，从遗传学角度来看，诺迪克斯（R. nordicus）与索尔迪罗桑特斯（R. sordirosanthus）的相似度要高于华尔贝里（R. wahlbergii s.s.）。
{"title":"Rubus wahlbergii and related species in Sweden","authors":"Mingyue Zhou, Melanie S. Montes, Tore Mattsson, Tomas Burén, Mikael Hedrén, Ulf Ryde","doi":"10.1111/njb.04373","DOIUrl":"https://doi.org/10.1111/njb.04373","url":null,"abstract":"We studied <jats:italic>Rubus wahlbergii</jats:italic> and related species in <jats:italic>R.</jats:italic> sect. <jats:italic>Corylifolii</jats:italic>, primarily in Sweden, using DNA microsatellites. The results show that the material can be divided into three species: <jats:italic>R. wahlbergii</jats:italic> s.s. which occurs along the Swedish coast from Bohuslän to Uppland, <jats:italic>R. nordicus</jats:italic> which occurs on the western coast all the way south to north‐western Skåne, and a previously unrecognized taxon which we here describe as <jats:italic>R. wahlbergioides.</jats:italic> The latter has scattered localities in Halland, Skåne, Blekinge, Öland and Småland, but is common around Kivik in Skåne and Kalmar in Småland. It is characterised by leaves that are without felt underneath, terminal leaflets with a somewhat more triangular shape and coarser serration than those of <jats:italic>R. wahlbergii</jats:italic> and also has more glands on the stem and the inflorescence. In the northern part of the distribution, <jats:italic>R. nordicus</jats:italic> is easily distinguished morphologically from <jats:italic>R. wahlbergii</jats:italic>, e.g. by a strong tendency to form 7‐foliolate leaves, but in Skåne and Halland, the two species are harder to distinguish. Still, genetically <jats:italic>R. nordicus</jats:italic> is more similar to <jats:italic>R. sordirosanthus</jats:italic> than to <jats:italic>R. wahlbergii</jats:italic> s.s.","PeriodicalId":54716,"journal":{"name":"Nordic Journal of Botany","volume":"36 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141510852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Han‐Wen Huang, Zi‐Yi Wang, Si‐Yuan Zeng, Qi‐Yi Yang, Rong Li
Iris luojiensis Z.Y. Wang, H.W. Huang and R. Li sp. nov. from southwest China is described and illustrated. This species occurs on shrub slopes in mountainous regions of southwest China. Iris luojiensis is morphologically similar to Iris japonica Thunb., Iris calcicola Z. C. Lu, Z.P. Huang and Yan Liu and Iris wattii Baker, but easily distinguished from them by its bluish‐violet flowers, 3–6 flowering‐stem branches, leaf size, particularly the upper leaves, and by only having two to three (seldom one) flowers per bract. A phylogenetic analysis based on the complete plastid genome supports the separation of I. luojiensis from other morphologically related species. According to morphological and molecular evidence, I. luojiensis can be placed in the I. sect. Lophiris.
来自中国西南部的新种鸢尾（Iris luojiensis Z.Y. Wang, H.W. Huang and R. Li sp.nov.）被描述并图解。本种分布于中国西南山区的灌木斜坡上。洛吉鸢（Iris luojiensis）在形态上与鸢尾（Iris japonica Thunb.）、鸢尾（Iris calcicola Z. C. Lu, Z.P. Huang and Yan Liu）和鸢尾（Iris wattii Baker）相似，但由于其花为蓝紫色，花茎分枝为 3-6 个，叶片大小（尤其是上部叶片）以及每个苞片只有 2-3 朵花（很少为 1 朵），因此很容易与它们区分开来。基于完整质粒基因组的系统发育分析支持将 I. luojiensis 与其他形态上相关的物种区分开来。根据形态学和分子证据，I. luojiensis 可归入 I. sect.Lophiris.
{"title":"Iris luojiensis (Iridaceae), a new species from southwest China","authors":"Han‐Wen Huang, Zi‐Yi Wang, Si‐Yuan Zeng, Qi‐Yi Yang, Rong Li","doi":"10.1111/njb.04389","DOIUrl":"https://doi.org/10.1111/njb.04389","url":null,"abstract":"<jats:italic>Iris luojiensis</jats:italic> Z.Y. Wang, H.W. Huang and R. Li sp. nov. from southwest China is described and illustrated. This species occurs on shrub slopes in mountainous regions of southwest China. <jats:italic>Iris luojiensis</jats:italic> is morphologically similar to <jats:italic>Iris japonica</jats:italic> Thunb., <jats:italic>Iris calcicola</jats:italic> Z. C. Lu, Z.P. Huang and Yan Liu and <jats:italic>Iris wattii</jats:italic> Baker, but easily distinguished from them by its bluish‐violet flowers, 3–6 flowering‐stem branches, leaf size, particularly the upper leaves, and by only having two to three (seldom one) flowers per bract. A phylogenetic analysis based on the complete plastid genome supports the separation of <jats:italic>I. luojiensis</jats:italic> from other morphologically related species. According to morphological and molecular evidence, <jats:italic>I. luojiensis</jats:italic> can be placed in the <jats:italic>I.</jats:italic> sect. <jats:italic>Lophiris</jats:italic>.","PeriodicalId":54716,"journal":{"name":"Nordic Journal of Botany","volume":"100 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141510854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dymphna Wiegmans, Keith Larson, Jan Clavel, Lore Hostens, Jasmine Spreeuwers, Amber Pirée, Ivan Nijs, Jonas J. Lembrechts
The contemporary interaction of climate and disturbance drives vegetation composition and species distribution shifts, making their respective roles difficult to disentangle. This study describes the long‐term ruderal plant species distributions along the ‘Rallarvägen' in Abisko, subarctic Sweden. This trail currently serves as a hiking trail but was initially created as a construction road for a railroad from 1898 to 1903 and is paralleled by the E10 Highway since 1982.Using vegetation and climate data from 1903, 1913, 1983, and 2021, we found that warm‐adapted ruderal plant species were common along the Rallarvägen shortly after railroad construction in the early 20th century. Interestingly, many of these native and non‐native ruderals with relatively high temperature affinity that were present in 1903 and 1913 have since disappeared and have not reappeared, despite the substantial increase in regional temperature in recent decades.In addition, the historical disturbances have had long‐lasting effects on the current spatial distribution of the ruderal vegetation. Most ruderals still reside close to the railroad tracks and are progressively filtered out with increasing distance from anthropogenically disturbed introductory points, such as train stations, where they peak in species richness – a process we term ‘horizontal directional ecological filtering', in parallel to the established concept of ‘directional ecological filtering' along elevational gradients.The historical record of ruderal plant species in the region, influenced by a century‐old railroad construction, emphasizes the importance of knowing a system's disturbance history for understanding current vegetation dynamics and anticipating its future in a changing climate.
{"title":"Historic disturbance events overruled climatic factors as drivers of ruderal species distributions in the Scandinavian mountains","authors":"Dymphna Wiegmans, Keith Larson, Jan Clavel, Lore Hostens, Jasmine Spreeuwers, Amber Pirée, Ivan Nijs, Jonas J. Lembrechts","doi":"10.1111/njb.04382","DOIUrl":"https://doi.org/10.1111/njb.04382","url":null,"abstract":"The contemporary interaction of climate and disturbance drives vegetation composition and species distribution shifts, making their respective roles difficult to disentangle. This study describes the long‐term ruderal plant species distributions along the ‘Rallarvägen' in Abisko, subarctic Sweden. This trail currently serves as a hiking trail but was initially created as a construction road for a railroad from 1898 to 1903 and is paralleled by the E10 Highway since 1982.Using vegetation and climate data from 1903, 1913, 1983, and 2021, we found that warm‐adapted ruderal plant species were common along the Rallarvägen shortly after railroad construction in the early 20th century. Interestingly, many of these native and non‐native ruderals with relatively high temperature affinity that were present in 1903 and 1913 have since disappeared and have not reappeared, despite the substantial increase in regional temperature in recent decades.In addition, the historical disturbances have had long‐lasting effects on the current spatial distribution of the ruderal vegetation. Most ruderals still reside close to the railroad tracks and are progressively filtered out with increasing distance from anthropogenically disturbed introductory points, such as train stations, where they peak in species richness – a process we term ‘horizontal directional ecological filtering', in parallel to the established concept of ‘directional ecological filtering' along elevational gradients.The historical record of ruderal plant species in the region, influenced by a century‐old railroad construction, emphasizes the importance of knowing a system's disturbance history for understanding current vegetation dynamics and anticipating its future in a changing climate.","PeriodicalId":54716,"journal":{"name":"Nordic Journal of Botany","volume":"203 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141510814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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