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An outline on the chemical phenotype flexibility of forest species: an eco-metabolomics study of Pinus uncinata along an altitudinal gradient 森林物种化学表型灵活性概述:沿海拔梯度的松林生态代谢组学研究
IF 3.5 3区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2025-03-01 Epub Date: 2024-12-08 DOI: 10.1016/j.ppees.2024.125844
Albert Rivas-Ubach , Ismael Aranda , Jordi Sardans , Yina Liu , María Díaz de Quijano , Ljiljana Paša-Tolić , Michal Oravec , Otmar Urban , Josep Peñuelas
The altitudinal distribution of plant populations is mainly determined by a set of environmental variables, including temperature, water availability, UV radiation, among others, which gradually shift with elevation. Therefore, altitudinal gradients in ecology could serve as "natural laboratories" providing insights into the phenotypic flexibility of natural plant populations. Plants can adjust their phenotypes to cope with specific environments. However, the adjustment capacity directly depends on the plasticity and flexibility of plant phenotypes. Plants growing at the edges of their distribution gradients may present limited flexibility due to the sub-optimal environmental conditions they experience. We analyzed the foliar metabolomes of a mountain pine population in the Pyrenees to assess their chemical phenotypic flexibility along an altitudinal gradient. We found significant changes in foliar metabolomes across different altitudes, with the most contrasting foliar metabolomes observed at the lowest and highest altitudes. Trees growing at the boundaries of the altitudinal distribution considerably shifted their foliar metabolome compared to those at more central locations with an overall upregulation of sugars, amino acids, and antioxidants. Metabolomics analyses suggested higher oxidative activity at lower altitude, presumably due to the drier and warmer conditions. However, oxidative stress indicators were also detected at the tree line, potentially associated with chilling, UV, and tropospheric O3 exposure. In addition to the inability of many species to keep pace with the rapid speed of climate change by migrating upward in altitude or latitude to find more optimum environments, their migration to higher elevations may be hindered by the presence of other environmental factors at high altitudes. Eco-metabolomics studies along environmental gradients can provide crucial insights into the chemical phenotypic flexibility of natural plant populations while providing pivotal clues regarding which plant metabolic pathway are prioritized to cope with specific environments.
植物种群的海拔分布主要由一系列环境变量决定,包括温度、水分有效性、紫外线辐射等,这些环境变量随海拔逐渐变化。因此,生态学中的海拔梯度可以作为“自然实验室”,为自然植物种群的表型灵活性提供见解。植物可以调整它们的表型以适应特定的环境。而调节能力直接取决于植物表型的可塑性和柔韧性。由于它们所经历的次优环境条件,生长在分布梯度边缘的植物可能表现出有限的灵活性。我们分析了比利牛斯山一个山松种群的叶代谢组,以评估其沿海拔梯度的化学表型灵活性。我们发现不同海拔的叶片代谢组有显著的变化,其中最低海拔和最高海拔的叶片代谢组差异最大。生长在海拔分布边界的树木,其叶片代谢组与生长在更中心位置的树木相比发生了显著的变化,糖、氨基酸和抗氧化剂的含量总体上调。代谢组学分析表明,低海拔地区的氧化活性较高,可能是由于干燥和温暖的环境。然而,在树线也检测到氧化应激指标,可能与寒冷、紫外线和对流层臭氧暴露有关。除了许多物种无法通过向海拔或纬度向上迁移以寻找更适宜的环境来跟上气候变化的速度外,它们向更高海拔地区的迁移可能会受到高海拔地区其他环境因素的阻碍。沿着环境梯度的生态代谢组学研究可以为自然植物群体的化学表型灵活性提供重要的见解,同时为植物代谢途径优先应对特定环境提供关键线索。
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引用次数: 0
Temporal variability in native plant composition clouds impact of increasing non-native richness along elevational gradients in Tenerife 特内里费岛原生植物组成的时间变异对非原生植物丰富度沿海拔梯度增加的影响
IF 3.5 3区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2025-03-01 Epub Date: 2024-12-12 DOI: 10.1016/j.ppees.2024.125845
Meike Buhaly , Amanda Ratier Backes , José Ramón Arévalo , Sylvia Haider
Introductions of non-native plant species and their rates of expansion into novel environments are rapidly climbing, and their impact on recipient community composition is currently not well documented. Under the influence of rapidly intensifying human activity, pathways such as roads support such range expansions, especially in vulnerable mountain regions. Using species composition and abundance data collected in disturbed and natural habitats along three mountain roads covering almost 2500 m in elevation, we investigate how non-native plant species impact temporal change in community composition and spatial community dissimilarity on the island of Tenerife over 14 years. We found that, within communities, the number of both native and non-native species increased over time in disturbed habitats, while non-native species richness decreased in natural habitats. While species composition of communities changed over time, this change was not greater with or without non-native species, though any signal of non-native species’ influence was likely lost due to the surprisingly high variability in the native community. In disturbed roadside habitats, turnover of species over time played a larger role in temporal change in community composition than changes in species’ abundances. Despite increases in richness and occurrences along the elevation gradient, non-native species did not spatially homogenize communities. Although impacts of non-native species on temporal changes in community dissimilarity were presently not found, increases in the number of non-native species and their occurrences illustrate the need for long-term monitoring of altitudinal spread in mountain plant communities, especially in anthropogenically disturbed habitats.
非本地植物物种的引进及其向新环境扩展的速度正在迅速攀升,它们对接收植物群落组成的影响目前还没有得到很好的记录。在人类活动迅速加剧的影响下,道路等途径支持这种范围的扩大,特别是在脆弱的山区。利用在海拔近2500 m的3条山地公路受干扰和自然生境中收集的物种组成和丰度数据,研究了14年来外来植物物种对特内里费岛群落组成和空间差异的影响。我们发现,在受干扰的生境中,群落内的本地和非本地物种数量随着时间的推移而增加,而非本地物种丰富度在自然生境中下降。虽然群落的物种组成随着时间的推移而变化,但无论有无非本地物种,这种变化都不会更大,尽管由于本地群落中惊人的高变异性,任何非本地物种影响的信号都可能丢失。在受干扰的路边生境中,物种更替对群落组成的影响大于物种丰度的变化。尽管非本地物种的丰富度和发生率在海拔梯度上有所增加,但在空间上并没有使群落同质化。虽然目前还没有发现非本土物种对群落差异的时间变化的影响,但非本土物种数量及其出现的增加表明,需要长期监测山地植物群落的海拔分布,特别是在人为干扰的生境中。
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引用次数: 0
Gondwanan origin and foremost Miocene diversification explain the paleotropical intercontinental disjunction (PID) in the winged seed clade of Malvaceae 冈瓦纳起源和最重要的中新世多样化解释了马尔瓦科有翅种子分支的古热带洲际分离
IF 3.5 3区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2025-03-01 Epub Date: 2024-12-09 DOI: 10.1016/j.ppees.2024.125842
Samiksha Shukla , Kajal Chandra , Anumeha Shukla
Understanding the biogeographic and diversification processes that explain current patterns of diversity in cosmopolitan groups is complex. We aimed to understand the historical biogeography by estimating the ancestral area of origin and diversification of tropical to subtropical plant genus Eriolaena DC. of the subfamily Dombeyoideae (family Malvaceae). To trace the evolutionary trajectory of this clade, fossil leaves exhibiting similarities to the modern genus Eriolaena are described here as E. paleowallichii from the early Paleogene succession of Rajasthan (India). This marks the first fossil record of Eriolaena, commonly known as the Winged Seed Clade (WSC), making this discovery crucial for understanding the evolutionary history of the clade. The Winged Seed Clade (WSC) of the subfamily Dombeyoideae initially included three genera: Eriolaena, Helmiopsis, and Helmiopsiella. However, subsequent taxonomic revisions, based on morphological and molecular studies, led to their consolidation under the genus Eriolaena. This winged clade shows a palaeotropical intercontinental disjunction (PID), mainly located in Southeast Asia, India, and Madagascar with only a single species in Africa. We assembled a dense sampling of the WSC throughout the current geographical distribution to reconstruct the historical biogeography of this clade. A detailed phylogenetic study indicates that the WSC diverged from its sister clade Andringitra in the lower Cretaceous (∼88 Mya, credibility intervals 72.39–105.35), the initial diversification of the WSC occurred around 74.15 Mya (credibility intervals 60.82–88.62 Mya) and broadly this clade was globally diversified in the Miocene. The DEC+J model indicated that (1) WSC likely originated in Madagascar around 79 Mya (2) jump-distance dispersal events were inferred between Madagascar to India and Madagascar to Africa, (3) ‘Out of India dispersals’ occurred mainly in the Miocene, allowing this clade to colonize in Southeast Asia. Biogeography and divergence dating indicate that the Miocene was an important epoch when this clade diversified globally. Our findings suggest that an ancient origin connected with a dispersal history enabled by terrestrial land bridges and long-distance dispersals is likely to explain the winged seed clade's palaeotropical intercontinental disjunction (PID).
理解解释世界主义群体当前多样性模式的生物地理和多样化过程是复杂的。本研究旨在通过对热带至亚热带植物毛竹属(Eriolaena DC)的起源区域和多样性的估算,了解其历史生物地理特征。属于麻蝇亚科(麻蝇科)。为了追踪这一分支的进化轨迹,与现代Eriolaena属相似的化石叶子在这里被描述为来自拉贾斯坦邦(印度)早古近纪演替的E. paleowallichii。这标志着Eriolaena的第一个化石记录,通常被称为有翼种子枝(WSC),这一发现对于理解该枝的进化史至关重要。翅种子分支(WSC)最初包括三个属:黑羽属、Helmiopsis和Helmiopsiella。然而,随后的分类修订,基于形态学和分子研究,导致他们巩固在Eriolaena属。这种有翼的进化支表现为古热带洲际分离(PID),主要分布在东南亚、印度和马达加斯加,非洲只有一种。我们对WSC在当前地理分布中的密集样本进行了收集,以重建该支系的历史生物地理。详细的系统发育研究表明,WSC在下白垩世(~ 88 Mya,可信区间72.39 ~ 105.35)从其姊妹分支Andringitra中分化出来,WSC的初始多样化发生在74.15 Mya左右(可信区间60.82 ~ 88.62 Mya),该分支在中新世全球范围内广泛多样化。DEC+J模型表明:(1)WSC可能起源于马达加斯加,大约在79 Mya左右;(2)推断出马达加斯加到印度和马达加斯加到非洲之间的跳跃距离扩散事件;(3)“印度外扩散”主要发生在中新世,使该分支能够在东南亚殖民。生物地理学和分异定年表明中新世是该支系在全球范围内多样化的重要时期。我们的研究结果表明,一个古老的起源与陆地陆桥和长途传播的传播历史相联系,可能解释了有翼种子枝的古热带洲际分离(PID)。
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引用次数: 0
Together but not mixed: mistletoe genetic diversity and seed disperser activity between evergreen and deciduous forests 在一起而不是混合:常绿和落叶森林之间的槲寄生遗传多样性和种子传播活动
IF 3.5 3区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2025-03-01 Epub Date: 2025-02-12 DOI: 10.1016/j.ppees.2025.125850
Gabriela S. Olivares , José I. Orellana , Noemí Rojas-Hernández , Caren Vega-Retter , Javiera Villarroel , Gloria B. Rodríguez-Gómez , Roberto F. Nespolo , Francisco E. Fontúrbel
Habitat structure plays an important role in determining forest mammals' abundance and activity patterns, impacting their interactions with plant species. In the southern South American temperate rainforests, two mistletoe species (Tristerix corymbosus and Desmaria mutabilis) depend on the arboreal marsupial Dromiciops bozinovici for seed dispersal, inhabiting a mosaic of evergreen and deciduous Nothofagus-Araucaria forests. We used camera traps to compare marsupial abundance, visitation rates, and daily activity patterns between evergreen and deciduous forests. Also, we sequenced DNA (using SNPs) from both mistletoes to assess their genetic diversity, population genetic structure, and landscape genetics. Dromiciops bozinovici visited T. corymbosus more frequently in the evergreen forest and D. mutabilis in the deciduous forest, as it is the only mistletoe species found above 1250 m of elevation. Both mistletoe species showed similar genetic diversity between forest types, but T. corymbosus was more diverse than D. mutabilis; population structure was weak but significant in both cases. In both cases, gene flow was stronger towards the evergreen forest, and this asymmetry was more pronounced for D. mutabilis. Also, geographic and genetic distances were positively correlated except for D. mutabilis in the deciduous forest. Dromiciops bozinovici activity and abundance varied according to forest type and mistletoe species associated, which seem to be influencing gene flow and genetic diversity patterns. Interaction between plants and frugivores is particularly relevant in high-mountain forests, where mistletoes provide major resources for frugivores, which shape their spatial and genetic structures.
生境结构对森林哺乳动物的丰度和活动模式起着重要的决定作用,影响着它们与植物物种的相互作用。在南美洲南部的温带雨林中,两种槲寄生物种(Tristerix corymbosus和Desmaria mutabilis)依赖于树栖有袋类动物Dromiciops bozinovici进行种子传播,它们栖息在常绿和落叶的Nothofagus-Araucaria森林中。我们使用相机陷阱来比较常绿森林和落叶森林之间有袋动物的丰度、访问率和日常活动模式。此外,我们还对两种槲寄生的DNA进行了测序(使用snp),以评估它们的遗传多样性、群体遗传结构和景观遗传学。在海拔1250 m以上,bozinovici是唯一的寄生物种,常绿林中,bozinovici的寄生频率更高,落叶林中,mutabilis的寄生频率更高。两种槲寄生在不同林型间表现出相似的遗传多样性,但冠状槲寄生的遗传多样性高于变异槲寄生;两种情况下的种群结构都很弱,但都很显著。在这两种情况下,常绿森林的基因流更强,这种不对称在突变霉中更为明显。除落叶林中的变异曲霉外,地理距离与遗传距离均呈正相关。不同的森林类型和寄生物种不同,bozinovici活性和丰度也不同,这似乎影响着基因流动和遗传多样性模式。植物与食果动物之间的相互作用在高山森林中尤为重要,槲寄生为食果动物提供了主要资源,塑造了它们的空间和遗传结构。
{"title":"Together but not mixed: mistletoe genetic diversity and seed disperser activity between evergreen and deciduous forests","authors":"Gabriela S. Olivares ,&nbsp;José I. Orellana ,&nbsp;Noemí Rojas-Hernández ,&nbsp;Caren Vega-Retter ,&nbsp;Javiera Villarroel ,&nbsp;Gloria B. Rodríguez-Gómez ,&nbsp;Roberto F. Nespolo ,&nbsp;Francisco E. Fontúrbel","doi":"10.1016/j.ppees.2025.125850","DOIUrl":"10.1016/j.ppees.2025.125850","url":null,"abstract":"<div><div>Habitat structure plays an important role in determining forest mammals' abundance and activity patterns, impacting their interactions with plant species. In the southern South American temperate rainforests, two mistletoe species (<em>Tristerix corymbosus</em> and <em>Desmaria mutabilis</em>) depend on the arboreal marsupial <em>Dromiciops bozinovici</em> for seed dispersal, inhabiting a mosaic of evergreen and deciduous <em>Nothofagus</em>-<em>Araucaria</em> forests. We used camera traps to compare marsupial abundance, visitation rates, and daily activity patterns between evergreen and deciduous forests. Also, we sequenced DNA (using SNPs) from both mistletoes to assess their genetic diversity, population genetic structure, and landscape genetics. <em>Dromiciops bozinovici</em> visited <em>T. corymbosus</em> more frequently in the evergreen forest and <em>D. mutabilis</em> in the deciduous forest, as it is the only mistletoe species found above 1250 m of elevation. Both mistletoe species showed similar genetic diversity between forest types, but <em>T. corymbosus</em> was more diverse than <em>D. mutabilis;</em> population structure was weak but significant in both cases. In both cases, gene flow was stronger towards the evergreen forest, and this asymmetry was more pronounced for <em>D. mutabilis</em>. Also, geographic and genetic distances were positively correlated except for <em>D. mutabilis</em> in the deciduous forest. <em>Dromiciops bozinovici</em> activity and abundance varied according to forest type and mistletoe species associated, which seem to be influencing gene flow and genetic diversity patterns. Interaction between plants and frugivores is particularly relevant in high-mountain forests, where mistletoes provide major resources for frugivores, which shape their spatial and genetic structures.</div></div>","PeriodicalId":56093,"journal":{"name":"Perspectives in Plant Ecology Evolution and Systematics","volume":"66 ","pages":"Article 125850"},"PeriodicalIF":3.5,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143420586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Factors that extend flowering phenology for pollinators in prairie restorations 草原恢复中传粉媒介开花物候延长的因素
IF 3.5 3区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2025-03-01 Epub Date: 2025-01-26 DOI: 10.1016/j.ppees.2025.125848
Nathan Soley, Brian Wilsey
Tallgrass prairies contain plant species that flower sequentially throughout the growing season, and having a range of flowering phenologies is assumed to be important for pollinators. However, it is poorly known what factors cause extended flowering and how to best manage for it in restorations. Here, we test the hypotheses that extended flowering in restorations is caused by 1) seed mixes of high forb abundance relative to grasses, 2) greater abundance of forbs that flower especially early and late in the growing season, 3) greater richness of early and late-flowering forbs, and 4) mowing during the growing season. We tested hypotheses with two separate restoration experiments, the first in which seed mixes with different grass: forb ratios were compared at a site in Iowa, USA (grass: forb ratio experiment), and the second in which early and late-flowering forbs were added (or were not added) to restorations that were subsequently mowed or not mowed at three sites in Iowa and Minnesota, USA (forb addition experiment). In both experiments, community floral volume was estimated at least monthly throughout the growing season and flowering niche breadth was calculated as a measure of extended flowering phenology. In addition, in the grass: forb ratio experiment visitation by pollinators was recorded. Plots sown with intermediate grass: forb ratios had greater flowering niche breadth, flower production, and pollinator diversity, and the increased species richness of these seed mixtures best explained positive effects on flowering niche breadth. Adding a greater number of forb species in the forb addition experiment increased flowering niche breadth and flower production, especially when forbs were added as transplants to bypass the seedling recruitment stage. Mowing reduced flower production, but it increased flowering niche breadth, primarily in the forb additions with greatest species richness. Our results indicate that extending flowering phenology is possible in restorations when seed mixes with intermediate grass: forb ratios are used and a large number of early and late-flowering forb species are added as transplants. These factors also increase flower production, which was a significant predictor of the number and diversity of pollinators that visited flowers.
高草草原上的植物在整个生长季节都是依次开花的,有一系列的开花物候被认为对传粉者很重要。然而,人们对导致开花时间延长的因素以及如何在恢复过程中对其进行最佳管理知之甚少。在这里,我们测试了以下假设:恢复中开花时间的延长是由以下因素引起的:1)相对于禾本科植物而言,种子混合物的牧草丰度较高;2)在生长季节早期和晚期开花的牧草丰度更高;3)早期和晚期开花的牧草丰度更高;4)生长季节的刈割。我们通过两个单独的恢复实验来检验假设,第一个实验是在美国爱荷华州的一个地点比较不同牧草:牧草比例的种子混合(草:牧草比例实验),第二个实验是在美国爱荷华州和明尼苏达州的三个地点将早开花和晚开花的牧草添加(或不添加)到随后刈割或不刈割的恢复中(牧草添加实验)。在两个实验中,整个生长季节至少每月估算群落花体积,并计算开花生态位宽度作为延长开花物候的度量。此外,在草与草比实验中记录了传粉者的访花情况。禾草与牧草混合播种的样地开花生态位宽度、花产量和传粉者多样性均显著增加,而这些种子混合增加的物种丰富度对开花生态位宽度有积极影响。在牧草添加试验中,添加更多的牧草种类增加了开花生态位宽度和花产量,特别是当添加牧草作为移栽以绕过幼苗补充阶段时。刈割减少了开花产量,但增加了开花生态位宽度,主要是在物种丰富度最高的牧草添加中。结果表明,采用种子与中间牧草混合的方式,大量添加早花和晚花的牧草作为移植物,可以延长开花物候。这些因素也增加了花的产量,这是访问花的传粉者数量和多样性的重要预测因子。
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引用次数: 0
Tillandsia landbeckii secures high phenotypic variation despite clonal propagation at the dry limits of plant life in the Atacama Desert 尽管无性系繁殖在阿塔卡马沙漠植物生命的干燥极限,但蓝背莲确保了高表型变异
IF 3.5 3区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2025-03-01 Epub Date: 2025-01-09 DOI: 10.1016/j.ppees.2025.125846
Sarina Jabbusch, Marcus A. Koch
Hyperarid desert systems are among the most extreme and life-limiting biotas on Earth and lack almost any rainfall such as the Atacama Desert in northern Chile. In this study, we explored Tillandsia landbeckii loma vegetation consisting of only one single plant species that often covers square kilometers and is dependent on regular fog events as the most important water supply. We assessed growth and fitness parameters in the field and in cultivation; individual plants from nine permanent field study plots were collected and studied for phenotypic variation and plasticity under greenhouse conditions focusing on temperature and humidity. Individuals studied in the field and in cultivation have been genotyped using ddRAD analyses. The growth-related phenotypic variation shows very fine-scale adaptations to environmental gradients reflecting fog availability, and phenotypic variation is shown to be large. Genetic data indicate that Tillandsia landbeckii propagates mostly clonally, and various clones exhibit increased phenotypic variation and also prevail in the population. Our results suggest that while sexual reproduction is limited the long-lived Tillandsia landbeckii plant secures genotypes with high phenotypic variation via clonal propagation. As a consequence, a mosaic of such clonally reproducing vegetation units is securing not only genetic and phenotypic variation but also the integrity of the entire vegetation system thereby buffering environmental stress at the limits of vascular plant life. On longer time scales spanning hundreds to thousands of years, genetic variation is increased by rare and occasional gene flow, but the success of contemporary vegetation dynamics relies also on clonally reproduced ramets.
极度干旱的沙漠系统是地球上最极端和限制生命的生物群落之一,几乎没有任何降雨,比如智利北部的阿塔卡马沙漠。在本研究中,我们探索了仅由单一植物物种组成的landlandsia landbeckii loma植被,这些植被通常覆盖平方公里,并且依赖于常规雾事件作为最重要的供水。我们评估了田间和栽培中的生长和适宜性参数;收集了9个永久田间研究样地的单株,在以温度和湿度为重点的温室条件下研究了表型变异和可塑性。在田间和栽培中研究的个体已使用ddRAD分析进行基因分型。生长相关的表型变异对反映雾效度的环境梯度表现出非常精细的适应,表型变异显示出很大的差异。遗传数据表明,蓝背莲主要是无性系繁殖,各种无性系表现出表型变异,在群体中也普遍存在。我们的研究结果表明,虽然有性繁殖受到限制,但长寿的蓝背莲植物通过无性繁殖获得了具有高表型变异的基因型。因此,这种无性繁殖的植被单元的马赛克不仅保证了遗传和表型变异,而且保证了整个植被系统的完整性,从而缓冲了维管植物生命极限时的环境压力。在数百年至数千年的更长时间尺度上,遗传变异会因罕见和偶尔的基因流动而增加,但当代植被动态的成功也依赖于无性繁殖的分株。
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引用次数: 0
Ornamental perennials in flowerbeds shaded by tree canopy: Succession over five years since the establishment 被树冠遮蔽的花坛中的观赏多年生植物:自建立以来超过五年的演替
IF 3.5 3区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2025-03-01 Epub Date: 2025-01-11 DOI: 10.1016/j.ppees.2025.125847
Josef Kutlvašr , Adam Baroš , Pavlína Truhlárská , Kateřina Berchová Bímová , Martina Vojíková , Martin Vojík , Petr Pyšek , Jan Pergl
Ornamental plantings are an integral part of modern landscapes transformed by humans. In the last decades, there has been a shift towards low-maintenance plantings with reduced energy input, associated with increasing use of easy-to-grow, profusely blooming taxa with broad ecological niches. However, such species can escape from cultivation, naturalize easily, become invasive, and cause environmental and socioeconomic problems. Our study focused on ornamental flowerbeds shaded by the canopy of trees; we studied the survival of the planted taxa in succession and patterns of dominance exchange over five years since planting and compared the results with those obtained previously for sunny ornamental flowerbeds. We recorded 155 taxa (53%) surviving from the initially planted species pool and 118 newly arrived colonizers. The surviving taxa increased or maintained the same abundance as they had at the beginning of succession. Generative reproduction was the main factor contributing to successful survival, followed by specific leaf area (SLA). We observed an increase in diversity, measured as the Shannon-Wiener index, in two of 11 flowerbeds but found no relationship between diversity and stability, calculated as a distance of initial and recent stage in ordination space. The same traits, namely tall stature and high fecundity were important in shaded and sunny assemblages, which were key factors for survival and performance in both environments. The presented results are not only important from the biological invasions point of view but can also help gardeners promote the long-term stability of flowerbeds and save resources necessary for future maintenance of flowerbeds.
观赏植物是人类改造的现代景观的重要组成部分。在过去的几十年里,随着越来越多地使用易于生长、大量开花、生态位广泛的分类群,人们开始转向低维护、低能量投入的种植方式。然而,这些物种容易逃离种植,容易归化,成为入侵物种,并造成环境和社会经济问题。我们的研究重点是在树冠遮蔽下的观赏花坛;研究了种植后5年的植物类群演替存活率和优势交换模式,并与以往在阳光充足的观赏花坛进行了比较。在最初种植的物种池中,我们记录了155个分类群(53%)和118个新到达的殖民者。幸存的分类群增加或保持了与演替开始时相同的丰度。繁殖繁殖是影响成活率的主要因素,其次是比叶面积(SLA)。我们观察到11个花坛中有2个花坛的多样性增加,以Shannon-Wiener指数来衡量,但多样性与稳定性之间没有关系,以协调空间的初始和最近阶段的距离来计算。同样的性状,即高的身材和高的繁殖力在遮荫和阳光组合中都很重要,这是在两种环境下生存和表现的关键因素。本文的研究结果不仅从生物入侵的角度来看是重要的,而且可以帮助园丁促进花坛的长期稳定,并为未来的花坛维护节省必要的资源。
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引用次数: 0
Molecular phylogeny and biogeography of Lophanthus and its allies (Lamiaceae) 麻麻属及其近缘属植物的分子系统发育及生物地理学研究
IF 3.5 3区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2025-03-01 Epub Date: 2024-12-09 DOI: 10.1016/j.ppees.2024.125843
Hamid Moazzeni , Atefeh Pirani , Farshid Memariani , Saeide Hosseini , Mohammad Bagher Erfanian , Mohammad Reza Amiri , Ernst Vitek , Mohammad Reza Joharchi , Klaus Mummenhoff , Martin A. Lysak
As one of the taxonomically complicated groups of the subfamily Nepetoideae (Lamiaceae), the Hymenocrater+Lophanthus+Marmoritis clade (Lophanthus s.l. clade) consists of approximately 40 species distributed from eastern to southwestern Asia. Due to the sparse taxon sampling, previous molecular and morphological studies have not been capable of rendering the phylogenetic position of this clade and relationships of its taxa. We performed a comprehensive molecular study of the Hymenocrater+Lophanthus+Marmoritis clade, including an extensive taxon sampling, using nrDNA (ITS and ETS) and cpDNA (trnL-trnF, rps16, and rpl32-trnL) sequences. Bayesian and maximum likelihood approaches were used to reconstruct the phylogenetic relationships, dating of diversification, and historical biogeography of this clade. Although the present study confirms the polyphyly of Hymenocrater, Lophanthus and Marmoritis, the phylogenetic results do not confirm the unity of Lophanthus and its allies with Nepeta. Therefore, the generic delimitation of Lophanthus s.l. and Nepeta is yet to be determined, requiring an examination and assessment of adding a large number of Nepeta species and their close relatives. Our results also indicate the need to redefine Lophanthus sensu Budantsev more broadly as Lophanthus s.l. by synonymizing Hymenocrater and Marmoritis within Lophanthus. Two morphological synapomorphies, i.e., the resupinate corolla and an annulate hairy calyx tube in the middle or throat, support this unity. Dating and biogeographical analyses confirm that Lophanthus s.l. originated in the eastern Irano-Turanian floristic region in the late Miocene and later migrated to the central part of this region.
hymenocater +Lophanthus+Marmoritis分支(Lophanthus s.l clade)是Nepetoideae亚科(Lamiaceae)中分类较为复杂的类群之一,约有40种,分布于亚洲东部至西南部。由于分类群取样较少,以往的分子和形态学研究未能给出该支系的系统发育位置及其分类群的关系。我们利用nrDNA (ITS和ETS)和cpDNA (trnL-trnF、rps16和rpl32-trnL)序列,对Hymenocrater+Lophanthus+Marmoritis进化支进行了全面的分子研究,包括广泛的分类单元抽样。利用贝叶斯和最大似然方法重建了该支系的系统发育关系、多样化年代和历史生物地理。虽然本研究证实了Hymenocrater、Lophanthus和Marmoritis的多系性,但系统发育结果并不能证实Lophanthus及其同属Nepeta的统一性。因此,Lophanthus s.l.与Nepeta的属界尚未确定,需要对大量Nepeta种及其近缘种的添加进行审查和评估。我们的研究结果还表明,需要通过将Lophanthus中的Hymenocrater和Marmoritis同义化,将Lophanthus sensu Budantsev更广泛地重新定义为Lophanthus s.l。两个形态上的突触,即,重叠的花冠和在中间或喉部的环状有毛的花萼筒,支持这种统一性。年代测定和生物地理分析证实,Lophanthus s.l.起源于晚中新世伊朗-图兰区东部,后来迁移到该区中部。
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引用次数: 0
Variation in functional traits among different mycorrhizal types and life history stages of temperate broadleaf tree species 温带阔叶树种不同菌根类型和生活史阶段的功能特征差异
IF 3.5 3区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2024-11-01 Epub Date: 2024-11-19 DOI: 10.1016/j.ppees.2024.125833
Mingyuan Lu , Guangze Jin
Exploring the variation in functional traits in plants from different perspectives not only helps reveal the adaptation of plants to their environment but also reflects the ecological strategies of plants. In this study, three species of arbuscular mycorrhizal (AM) trees and three species of ectomycorrhizal (EM) trees were selected in the Heilongjiang Liangshui National Nature Reserve. To investigate the similarities and differences between the functional traits of the two mycorrhizal types of trees at different life history stages, hydraulic traits, anatomical traits, leaf functional traits, and stoichiometry of each species were measured at different life history stages. Traits such as mean vessel area, hydraulic weighted vessel diameter and nitrogen content appeared to be relatively important traits in this study, and all traits were more strongly correlated in AM trees. The sapwood-specific hydraulic conductivity, leaf-specific hydraulic conductivity, vessel density, vessel lumen fraction, nitrogen content and phosphorus content of EM species were significantly higher than those of AM species, while the total vessel area, mean vessel area, hydraulic weighted vessel diameter and density of primary leaf veins of EM species were significantly lower than those of AM species. The leaf mass per area and leaf dry matter content of saplings were significantly lower than those of juvenile trees and adult trees. Most of the trait variation interspecific and intraspecific, and the variability of hydraulic and anatomical traits such as sapwood-specific hydraulic conductivity, leaf-specific hydraulic conductivity, vessel density and total vessel area was relatively large. Leaf dry matter content, hydraulic weighted vessel diameter, vessel density and the vessel lumen fraction contributed significantly to whole branch hydraulic conductivity. It is evident that plastic adjustment and synergistic variation in functional traits are important mechanisms by which plants with different mycorrhizal types and at different life history stages can adapt to different environments.
从不同角度探讨植物功能性状的变异,不仅有助于揭示植物对环境的适应性,还能反映植物的生态策略。本研究在黑龙江凉水国家级自然保护区选取了3种树根菌(AM)和3种外生菌(EM)。为了研究两种菌根类型的树木在不同生活史阶段功能性状的异同,测量了每种树木在不同生活史阶段的水力性状、解剖学性状、叶片功能性状和化学计量学。在本研究中,平均血管面积、水力加权血管直径和含氮量等性状似乎是比较重要的性状,而且所有性状在 AM 树中都有更强的相关性。EM树种的边材特异性导水率、叶片特异性导水率、血管密度、血管腔分数、氮含量和磷含量显著高于AM树种,而EM树种的总血管面积、平均血管面积、水力加权血管直径和主叶脉密度显著低于AM树种。树苗的单位面积叶片质量和叶片干物质含量明显低于幼树和成年树。大部分性状的变异发生在种间和种内,边材特异性导水力、叶片特异性导水力、血管密度和总血管面积等水力和解剖学性状的变异相对较大。叶片干物质含量、水力加权血管直径、血管密度和血管腔分数对整个树枝的水力传导率有显著影响。由此可见,功能特性的可塑性调整和协同变异是不同菌根类型和不同生活史阶段的植物适应不同环境的重要机制。
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引用次数: 0
Elevational patterns of plant species richness and phylogenetic diversity in a Mediterranean island 地中海岛屿植物物种丰富度和系统发育多样性的海拔模式
IF 3.5 3区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2024-11-01 Epub Date: 2024-08-30 DOI: 10.1016/j.ppees.2024.125815
Michele Di Musciano , Giacomo Calvia , Alessandro Ruggero , Emmanuele Farris , Lorenzo Ricci , Anna Rita Frattaroli , Simonetta Bagella

Understanding the abiotic factors influencing biodiversity patterns on Earth is a crucial task for conservation scientists. At the regional level, meso-climate factors, primarily associated with elevational gradients, are of great importance. However, disentangling these factors can be challenging due to the influence of other variables, such as geological substrata. To address this issue and better understand elevational gradients, it is essential to study geologically homogeneous terrains, particularly in Mediterranean islands where such research is lacking. In this study, we investigated the distribution of plant species richness along the elevational gradient of the Limbara massif, which consists predominantly of granite rocks and ranks as the third-highest peak in Sardinia at 1359 m a.s.l. We employed generalized linear models to analyze richness patterns, considering various factors, including all plant species, functional species groups categorized by Raunkiær life forms, chorological groups of species, alien species and phylogenetic diversity. Our findings revealed a hump-shaped model of species richness along the elevational gradient, with lower elevations exhibiting the highest species richness. Additionally, endemic species richness increased with higher elevations, while alien species were predominantly found at lower elevations. These results indicate that the Limbara massif possesses a significant elevational gradient in species composition, likely reflecting a unique plant evolutionary history. Furthermore, we emphasize the importance of published floras as valuable sources of biodiversity data for such studies.

了解影响地球生物多样性模式的非生物因素是自然保护科学家的一项重要任务。在区域层面,主要与海拔梯度相关的中层气候因素非常重要。然而,由于受到地质底层等其他变量的影响,将这些因素区分开来可能具有挑战性。为了解决这个问题并更好地了解海拔梯度,研究地质均匀的地形至关重要,尤其是在缺乏此类研究的地中海岛屿。在这项研究中,我们调查了林巴拉山丘海拔梯度上植物物种丰富度的分布情况,该山丘主要由花岗岩石组成,海拔 1359 米,是撒丁岛第三高峰。我们采用了广义线性模型来分析植物物种丰富度模式,考虑了各种因素,包括所有植物物种、按 Raunkiær 生命形式分类的功能物种群、物种群、外来物种和系统发育多样性。我们的研究结果表明,物种丰富度沿海拔梯度呈驼峰状分布,海拔越低,物种丰富度越高。此外,特有物种的丰富度随着海拔的升高而增加,而外来物种则主要出现在海拔较低的地方。这些结果表明,林巴拉山丘的物种组成具有明显的海拔梯度,很可能反映了独特的植物进化史。此外,我们还强调了已出版的植物志作为此类研究的重要生物多样性数据来源的重要性。
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引用次数: 0
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Perspectives in Plant Ecology Evolution and Systematics
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