Flora最新文献

{"title":"Anatomical, histochemical, and micromorphological aspects of leaf gall in Myrciaria floribunda H.West ex Willd. O. Berg (Myrtaceae)","authors":"Luan Gonçalves Castilho ,&nbsp;Naiara Viana Campos ,&nbsp;Sabrina Dias de Matos ,&nbsp;Tatiana Ungaretti Paleo Konno ,&nbsp;Mariana Aparecida de Almeida Souza ,&nbsp;Ana Cláudia de Macêdo Vieira","doi":"10.1016/j.flora.2025.152721","DOIUrl":"10.1016/j.flora.2025.152721","url":null,"abstract":"<div><div><em>Myrciaria floribunda</em> (H.West ex Willd.) O. Berg (MYRTACEAE) is a galling superhost plant typical of restinga ecosystems. Among the morphotypes described for the species, the star-shaped gall has a differentiated morphology with leaf appendages. This study assessed the occurrence and characterized the structure of star galls in individuals of <em>Myrciaria floribunda</em> from the restinga de Jurubatiba National Park (Quissamã, RJ). Galled and non-galled leaves were collected from three individuals for morphoanatomical, micromorphological, and histochemical analyses. The formation of the star gall in <em>M. floribunda</em> causes numerous morphoanatomical changes resulting in a unique and very conspicuous structure. The gall is covered by simple epidermis and the ground system is formed by the hyperplasia and hypertrophy of the parenchyma and differentiation of a sclerenchymatous shell. The gall parenchyma is interspersed with vascular bundles. Protection mechanisms against predation are present such as leaf appendages covering the entire surface of the gall, sclerenchymatous shell, and phenolic and crystal idioblasts in the gall cortex. The absence of secretory structures in the gall cortex and their presence in the leaf appendages also points to a protective strategy. The starch and lipids reserves supply energy to the gall. Thus, the distribution of metabolites within the gall structure forms a histochemical gradient which represents a precise balance that ensures the development of the gall-inducer and prevents the action of predators. Anatomical analyses showed the complexity of the system and corroborate the premise that the gall constitutes a protective structure for the development of gallers.</div></div>","PeriodicalId":55156,"journal":{"name":"Flora","volume":"326 ","pages":"Article 152721"},"PeriodicalIF":1.7,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679340","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":"Woody encroachment and leaf functional traits of ground-layer savanna species","authors":"Pedro Firme da Cruz Júnior ,&nbsp;Luiz Felipe Souza Pinheiro ,&nbsp;Davi Rodrigo Rossatto ,&nbsp;Rosana Marta Kolb","doi":"10.1016/j.flora.2025.152709","DOIUrl":"10.1016/j.flora.2025.152709","url":null,"abstract":"<div><div>Changes in pyrodynamics, such as fire suppression, drive woody encroachment in savanna and grassland ecosystems worldwide. The filters imposed by encroachment promote floristic changes in the ground-layer community, decreasing species richness, and providing species replacement. However, functional aspects are still poorly understood, especially the role of leaf anatomical traits. Thus, our aim was to investigate the leaf trait changes in the ground-layer community of a Cerrado area in response to changes in litter and light, caused by woody encroachment. Through a field experiment, we simulated higher amounts of litter biomass and increased shading of the plant community for 2.5 years. We measured leaf tissue thickness, specific leaf area (SLA), pigment concentration and photosynthetic traits, such as carbon assimilation (A_max), stomatal conductance (g_s) and quantum efficiency of photosynthesis (α). Our results showed that shading is the main factor altering leaf functional traits, with the post-shading ground-layer community exhibiting more acquisitive resource-use strategies such as reduced leaf tissue thickness, higher SLA, and higher pigment concentration compared to plants under non-encroached conditions. However, these leaf responses were not sufficient to ensure the maintenance of higher photosynthetic performance (A_max, g_s and α) in the study species. Therefore, we demonstrate that the studied leaf functional traits of the ground-layer community are insufficient to ensure persistence and diversity in this new scenario. With the change in species composition promoted by encroachment, some shade-tolerant and generalist plants exhibit responses that contribute to their survival and occurrence.</div></div>","PeriodicalId":55156,"journal":{"name":"Flora","volume":"326 ","pages":"Article 152709"},"PeriodicalIF":1.7,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629223","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":"Environmental and physiological factors influencing seed longevity of three Brazilian endemic cacti during in situ storage","authors":"Jessyca Adelle Silva Santos ,&nbsp;Humberto Araújo Almeida ,&nbsp;Marcos Vinicius Meiado ,&nbsp;Queila Souza Garcia","doi":"10.1016/j.flora.2025.152711","DOIUrl":"10.1016/j.flora.2025.152711","url":null,"abstract":"<div><div>Seed lifespan is a critical component of biodiversity conservation. Therefore, understanding the environmental and physiological components of seed longevity is crucial for outlining appropriate management strategies in the context of current and future climate. Here, we studied the effects of parental plant environment on cacti seed deterioration during in situ storage and the physiological mechanisms influencing seed viability in populations of <em>Cereus jamacaru, Pilosocereus catingicola</em> ssp<em>. salvadorensis</em>, and <em>Xiquexique gounellei</em> ssp. <em>gounellei</em> from drier and wetter locations of the Caatinga. Seeds were placed in nylon bags at a depth of 5 cm in an area of natural occurrence of the three species. We periodically tested exhumed seeds for germinability, oxidative stress, antioxidant activity, protein, and sugar content. Results showed that all species have potential to form a short-term persistent seed bank. Burial time decreased seed viability, which was accompanied by protein and sugar degradation, increased lipid peroxidation, and decreased antioxidant capacity. Parental environment also affected viability loss in <em>C. jamacaru</em> seeds: after 12 months, 60% more seeds from wetter locations successfully germinated compared to drier ones. These intraspecific variations were linked to differences in sugar metabolism and maintenance of antioxidant capacity. Overall, the findings improve our understanding of cacti seed longevity and potential climate impacts on cacti conservation.</div></div>","PeriodicalId":55156,"journal":{"name":"Flora","volume":"326 ","pages":"Article 152711"},"PeriodicalIF":1.7,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143620491","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":"Characteristics of artificial pollination of large-flowered species of Coelogyne Lindl. (Orchidaceae) under greenhouse conditions","authors":"Galina Kolomeitseva,&nbsp;Vladimir Koval,&nbsp;Andrey Ryabchenko,&nbsp;Alexander Babosha","doi":"10.1016/j.flora.2025.152714","DOIUrl":"10.1016/j.flora.2025.152714","url":null,"abstract":"<div><div>The efficiency of xenogamous, geitonogamous and autogamous artificial pollination was studied in a number of orchids of the genus <em>Coelogyne</em> Lindl. under greenhouse conditions. Fruit and seed production was lower in geitonogamous and autogamous pollination than with xenogamous pollination, with geitonogamous pollination producing more fruit than autogamous pollination in several species. Regardless of the pollination method and the degree of pollen-stigma compatibility, all experimental species exhibited a phenotypic response of the flower to pollen exposure (post-pollination), manifested by stigma closure and gynostemium growth. Geitonogamous and autogamous pollination primarily exhibited gametophytic self-incompatibility, whereas xenogamous pollination, in addition to normal ovule and fruits development, also showed late-acting self-incompatibility. The anatomical and morphological manifestation of gametophytic self-incompatibility was the arrest of pollen tube growth in the stylar channel of the gynostemium. Two variants of late-acting self-incompatibility have been described: 1) death of embryo sacs and arrest of ovule development at the fertilisation stage (ovular incompatibility); 2) death of embryos with preservation of seed coats (early embryonic abortion). Partial ovule and embryo death due to late-acting self-incompatibility does not affect the normal development and maturation of the remaining ovules and fruits.</div></div>","PeriodicalId":55156,"journal":{"name":"Flora","volume":"326 ","pages":"Article 152714"},"PeriodicalIF":1.7,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143611255","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":"Parallel floral evolution of Lilium species pollinated by pierid butterflies","authors":"Yun-Bo Duan ,&nbsp;Hong-Qiang Lin ,&nbsp;Zhe Chen ,&nbsp;Chang-Qiu Liu ,&nbsp;Yu-Mei Yuan ,&nbsp;Yun-Dong Gao ,&nbsp;Mei-Yan Lei ,&nbsp;Mao-Lin Wang","doi":"10.1016/j.flora.2025.152713","DOIUrl":"10.1016/j.flora.2025.152713","url":null,"abstract":"<div><div>Although pollinators are often categorized into broadly defined functional groups, much of floral diversity may actually reflect adaptation to different subdivisions within such broad pollinator groups. In <em>Lilium</em>, some species have white or pink flowers of moderate size (the <em>pierid type</em>), in contrast to those with relatively large orange or red flowers that are pollinated by swallowtail butterflies (the <em>swallowtail type</em>). Here we test whether species of the <em>pierid type</em> are pollinated by relatively small butterflies and whether these species belong to a monophyletic clade or whether this pollination system originated through convergent evolution. We observed floral visitors, examined their pollination effectiveness and the breeding systems of four eastern Asian <em>Lilium</em> species, measured floral traits, and conducted a phylogenetic analysis involving all species of the <em>pierid</em> type and several of the <em>swallowtail</em> type. Each of the species were visited by a variety of insects, but pierids most frequently contacted stigmas. These butterflies carried pollen predominantly on their hindwings. Visitors other than pierids deposited few pollen grains per visit. The focal species are highly self-incompatible and rely completely on pollinators for seed production. They differ from the <em>swallowtail type</em> mainly in floral coloration and size. In particular, the difference in size between the two types can likely be attributed to matching butterflies of different sizes. Species of the <em>pierid type</em> have independently evolved at least three times and therefore their floral similarity reflects floral convergence. Thus, like other pollinator groups, butterflies comprise subdivisions in relation to distinct floral syndromes, which have contributed to the evolution of floral diversity of <em>Lilium</em>.</div></div>","PeriodicalId":55156,"journal":{"name":"Flora","volume":"326 ","pages":"Article 152713"},"PeriodicalIF":1.7,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143592679","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":"Exploring plant functional traits and their relationship to biomass dynamics in secondary forests in Eastern Amazonia","authors":"Luane Botelho ,&nbsp;Fernando Elias ,&nbsp;Beatriz V. Barbosa ,&nbsp;Karoline C. Silva ,&nbsp;Vanessa Negrão-Rodrigues ,&nbsp;Euciney E.S. Barbosa ,&nbsp;Jucelino S. Coutinho ,&nbsp;Joice Ferreira ,&nbsp;Jos Barlow ,&nbsp;Grazielle Sales Teodoro","doi":"10.1016/j.flora.2025.152712","DOIUrl":"10.1016/j.flora.2025.152712","url":null,"abstract":"<div><div>Functional traits and strategies of trees can effectively indicate the progress of forest recovery during succession. This study investigates variations in leaf and wood traits, CSR functional strategies, and trade-offs in resource acquisition adopted by plants in secondary forests of different recovery ages, comparing them to old-growth forests. We also examined the relationships between traits, aboveground biomass dynamics, and edaphic variables in the Bragantina region, Eastern Amazon. Our evaluation focused on leaf area (LA), specific leaf area (SLA), leaf dry matter content (LDMC), and wood density (WD). Secondary forests exhibited higher LDMC and WD compared to old-growth forests, with low trait variation among secondary forests regardless of recovery age. Stress tolerance (S) was the dominant strategy in secondary forests, whereas old-growth forests showed a balanced proportion of stress tolerance and competitive strategies. Coordination was identified among WD, stress strategy (S), and LDMC. Significant relationships were found between functional traits and soil variables. Our results highlight the slow functional recovery of secondary forests in the Bragantina region which is associated with intense land use prior to natural regeneration and the fragmented landscape.</div></div>","PeriodicalId":55156,"journal":{"name":"Flora","volume":"326 ","pages":"Article 152712"},"PeriodicalIF":1.7,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601106","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":"Phenology of Psittacanthus palmeri (Loranthaceae), a deciduous mistletoe, and its host Bursera fagaroides","authors":"Mónica E. Queijeiro-Bolaños,&nbsp;Israel G. Carrillo-Angeles,&nbsp;Mónica Cervantes-Jiménez,&nbsp;Humberto Suzán-Azpiri","doi":"10.1016/j.flora.2025.152707","DOIUrl":"10.1016/j.flora.2025.152707","url":null,"abstract":"<div><div>Deciduousness is a common trait among plants inhabiting semi-arid regions; however, this foliar habit is rare in mistletoes and has not been documented in tropical species. In Central Mexico, <em>Psittacanthus palmeri</em> parasitizes <em>Bursera fagaroides</em> trees. Both species share similar characteristics, such as shedding their leaves during the dry season and having notably similar fruit morphology. To document the deciduous habit of <em>P. palmeri</em> and investigate whether its phenophases align with those of <em>B. fagaroides</em>, we evaluated the phenological changes of both species over the course of one year. Additionally, we compared the mean fruit size of both species to evaluate their morphological similarity. Both species exhibit a leafless phase during the dry season, although <em>B. fagaroides</em>’s leafless period is more extended. Their flowering phenophases differ: <em>B. fagaroides</em> flowers during the dry season with an intermediate duration and mid-synchronic timing, while <em>P. palmeri</em> flowers during the rainy season with an extended duration and non-synchronous timing. The fruiting phase for <em>Bursera</em> is extended, synchronous, and even forming aerial seed bank. In contrast, the fruiting phase of <em>P. palmeri</em> is extended (but not more than six months), occurs during autumn-winter, and is non-synchronous. The fruits of both species are very similar in size (<em>t</em> = 1.086, d.f. = 118, <em>p</em> = 0.279) and color, suggesting they may share disperser birds, potentially enhancing seed dispersal for both species. However, this hypothesis requires further research. <em>P. palmeri</em> is a poorly studied mistletoe, and its unique features, such as deciduous habit, inconspicuous nature and a possible mimicry of the host, opens new opportunities of research.</div></div>","PeriodicalId":55156,"journal":{"name":"Flora","volume":"326 ","pages":"Article 152707"},"PeriodicalIF":1.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577970","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":"Leaf morpho-anatomy and taxonomic significance in six Phalaenopsis s. l. (Orchidaceae) species from China","authors":"Wenhao Liu ,&nbsp;Yunxi Xie ,&nbsp;Le Zou ,&nbsp;Yan Luo ,&nbsp;Lu Li","doi":"10.1016/j.flora.2025.152710","DOIUrl":"10.1016/j.flora.2025.152710","url":null,"abstract":"<div><div><em>Phalaenopsis</em> is well-known as a highly ornamental and rare orchid. The taxonomy and infrageneric relationship of the genus of <em>Phalaenopsis s. l.</em> has been highly disputed due to some overlapping morphological features. Leaf morpho-anatomy of six <em>Phalaenopsis s. l.</em> species from China were investigated using a microscope and paraffin section to provide new evidence for taxonomic implications. The observation of the study revealed the following: (1) The shape of the ordinary epidermal cells on both sides are polygonal with straight-arched anticlinal wall. (2) Papillae occurre on each epidermal cells and are present on both leaf sides, including the uni-papilla on both the adaxial and abaxial epidermis cells in these six species, with an exception of the bi-papillae on adaxial epidermis cells in <em>P. wilsonii</em> and <em>P. braceana</em>. (3) Orbicular stomata and elliptic stomata occur only on the abaxial epidermis, commonly with co-occurrence of tetracytic and anomocytic stomata. (4) The straight type and the convex type of outline of leaf midrib were observed in six <em>Phalaenopsis s. l.</em> species. The thickness of leaf midrib is different greatly, the thickest observed in <em>P. deliciosa</em> and the thinnest observed in <em>P. braceana</em>. (5) Spherical silica bodies and prismatic and raphide crystals were observed in six <em>Phalaenopsis s. l.</em> species. Some leaf morpho-anatomic features were selected and used for species discrimination, including the size of ordinary epidermal cells, type of papillae, stomatal shape and density, thickness and outline of cross-section of a leaf midrib, and crystal type. Meanwhile, it was supported that <em>Kingidium</em> should be grouped into <em>Phalaenopsis s. l.</em>, since <em>P. deliciosa</em> (syn. = <em>K. deliciosum</em>) and <em>P. braceana</em> (syn. = <em>K. braceanum</em>) shared common leaf morpho-anatomic features with the other four species of <em>Phalaenopsis s. s.</em> In addition, a key to six <em>Phalaenopsis s. l.</em> species from China was proposed based on leaf morpho-anatomic features.</div></div>","PeriodicalId":55156,"journal":{"name":"Flora","volume":"326 ","pages":"Article 152710"},"PeriodicalIF":1.7,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563420","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":"Leaf traits as predictors of climatic adaptation and distributional range in wide- and narrow-range species","authors":"Sandara Nadja Rodrigues Brasil ,&nbsp;Carlos Eduardo de Carvalho ,&nbsp;Francisca Soares de Araujo,&nbsp;Maria Iracema Bezerra Loiola","doi":"10.1016/j.flora.2025.152708","DOIUrl":"10.1016/j.flora.2025.152708","url":null,"abstract":"<div><div>The distribution of species and their resistance to climate change can be predicted by examining the range of abiotic factors and the expression of intraspecific functional trait variation. Functional traits, such as specific leaf area (SLA) and total leaf surface area (LA), may vary in individuals according to their natural habitat conditions, improving plant performance. The genus <em>Erythroxylum</em> is a good model for understanding the vulnerability of tropical plants to climate change as it widely occurs from semiarid to humid tropical climates at different elevations, and many species now face the risk of extinction in response to climate change and other factors. In this study, we examined the relationship between leaf functional traits and climatic variables and how intraspecific variation in these traits and variables correlates with the distribution breadth of <em>Erythroxylum</em> species. We also aimed to identify which specific traits influence their distribution across Brazil's diverse climates and elevations. We found a negative correlation between specific leaf area (SLA) and precipitation and temperature, indicating that individuals with lower SLA are more common at higher temperatures and precipitation. In contrast, we observed a positive correlation between leaf area (LA) and precipitation. We also found higher intraspecific variability in SLA and LA across wide-range compared to narrow-range species. LA was a good predictor in estimating the area of occupancy and extension of occupancy in <em>Erythroxylum</em> species. We suggest that <em>Erythroxylum</em> has adapted to hotter and wetter environments using relatively slow investment strategies, prioritizing long-term survival over rapid growth, also known as a resource-conservative strategy. Additionally, the capacity to exhibit a wide range of leaf thickness and size has enabled these plants to expand their distribution, allowing for a broader range of environmental conditions.</div></div>","PeriodicalId":55156,"journal":{"name":"Flora","volume":"326 ","pages":"Article 152708"},"PeriodicalIF":1.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577969","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":"Contrasting effects of a native and an alien N-fixing species on the diversity and composition of dune plant community assemblages","authors":"Liliana Vasquez-Garcia ,&nbsp;Bruce Arthur Osborne ,&nbsp;Jorge F. Perez-Quezada","doi":"10.1016/j.flora.2025.152702","DOIUrl":"10.1016/j.flora.2025.152702","url":null,"abstract":"<div><div>The establishment of plant species in coastal dune systems has received increasing attention in recent years due to their potential threats to the unique biotic and abiotic characteristics of these fragile ecosystems. Plants exhibiting invasive behavior, whether alien or native, merit particular focus in coastal dunes systems given their ability to form extensive, high-density populations. To address whether there are differences in the effects of a native and an alien species on dune systems, we examined the impact of two N-fixing species, one an alien invader (<em>Ulex europaeus</em>) and the other a native colonizer (<em>Gunnera tinctoria</em>), on taxonomic and functional plant diversity. In these coastal dune systems where the resident community contains a high (56 %) proportion of introduced species, invasion by the alien species <em>Ulex europaeus</em> significantly reduced the diversity of the resident community by decreasing species richness, evenness, and taxonomic complexity. In contrast, colonization by the native <em>Gunnera tinctoria</em> did not lead to significant reductions in species richness or evenness but did reduce overall species diversity and likely facilitated species turnover by altering species assemblages. We conclude that U<em>. europaeus</em> invasions exert significantly negative effects on resident coastal plant communities, whereas colonization by the native G<em>. tinctoria</em> has comparatively less impact. This study represents one of the few field experiments directly comparing the impacts of invasive alien species with those of range-expanding native species, providing evidence that alien species can exert greater ecological effects. These findings hold significant conservation and management implications, as they highlight the need to address the ecological consequences of overgrowing populations, whether native or alien, particularly in coastal dune systems.</div></div>","PeriodicalId":55156,"journal":{"name":"Flora","volume":"325 ","pages":"Article 152702"},"PeriodicalIF":1.7,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549583","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}