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The "Reticulata irises" are dwarf irises highly appreciated in horticulture, which are characterised by their tuberiform bulbs, with a single fleshy inner tunic clothed mostly with reticulate or reticulate-hairy outer tunics, and basal leaves bifacial, angulose or finely sulcate in section. The aggregate is often accepted as a taxonomically compact group to which the name Iris subg. Hermodactyloides (Iris sect. Reticulatae) is often applied. It includes between 10–22 taxa (species and subspecies) occurring disjunctly from central Türkiye and the Transcaucasus throughout the Middle East to western China. Molecular work shows that Iris subg. Hermodactyloides, is polyphyletic as frequently delineated. Alternatively, analytic treatments accept two genera, Alatavia and Iridodictyum, exhibiting clear differences in morphology, biogeography, and phylogenetic connections. Recently, new field prospection across scarcely prospected vast territories led to the description of many new taxa in the "Reticulata irises." In this context, an updated synopsis of the bulbous genera Alatavia (four species) and Iridodictyum (18 + 2 species) is reported. For each accepted taxon, main synonyms, type indication, chromosome numbers, distribution areas, and taxonomic or nomenclatural remarks are reported. Further, five new specific combinations are introduced, and also four neotypes, two lectotypes, two second-step lectotypes, and one epitype are designated. [ABSTRACT FROM AUTHOR]

An overlooked phenomenon is a potential increase in the distribution and abundance of plants with the highly water-usage-efficient crassulacean acid metabolism (CAM). In the present article, we critically analyze recent research to investigate to what extent and why CAM plants may have recently expanded their range and abundance under global change. We discuss the ecophysiological and evolutionary mechanisms linked with CAM succulence and the drivers underlying potential CAM expansion, including drought, warming, and atmospheric carbon dioxide enrichment. We further map the biogeographic pattern of CAM expansion and show that some CAM plants (e.g. Cylindropuntia, Opuntia, and Agave) are expanding and encroaching within dryland landscapes worldwide. Our results collectively highlight the recent expansion of CAM plants, a trend that could be sustained under increasing aridity with climate change. We recommend that CAM expansion be evaluated in a data-model integrated framework to better understand and predict the ecological and socioeconomic consequences of CAM expansion during the Anthropocene. [ABSTRACT FROM AUTHOR]

Simple Summary: Trachycarpus nanus is a national, second-class, rare and endangered plant in China, and a plant species endemic to Yunnan. This species has a high medicinal, ecological, and scientific value, but it is currently on the verge of extinction. Therefore, it is urgent to learn its extinction risk under global warming. We predict its multi-temporal distribution pattern based on the optimized MaxEnt model. The results show that precipitation is the most important factor. In the future, drastic climatic changes and human disturbances may lead to the extinction of this species, so it is necessary to strengthen the protection of this species using specific strategies. Climate change affects the geographical distribution of plant species. Rare Trachycarpus nanus with a narrow distribution range, high medicinal value and extremely small population is facing increasing extinction risks under global climate change. In this study, 96 recorded occurrences and 23 environmental factors are used to predict the potential suitable area of T. nanus based on the optimized MaxEnt (3.4.4) model and ArcGIS (10.7) software. The results show that when the parameters are FC = LQ and RM = 1, the MaxEnt model is optimal and AUC = 0.946. The distribution patterns were predicted in the past, present, and four future phases, i.e., 2021–2040 (2030), 2041–2060 (2050), 2061–2080 (2070), and 2081–2100 (2090). The main factors are the annual precipitation (bio12), mean temperature of the coldest quarter (bio11), temperature seasonality (bio4), precipitation of the wettest quarter (bio16), and isothermality (bio3). The potential distribution of T. nanus is primarily concentrated in central Chuxiong, encompassing a total potential suitable area of 5.65 × 104 km2. In historical periods, the total habitat area is smaller than that in the present. In the future, the potential suitable area is generally increased. The centroid analysis shows that T. nanus will move to a high-altitude area and to the southeast. But its dispersal capacity may not keep up with the climate change rate. Therefore, additional protection sites for this species should be appropriately established and the habitat connectivity should be enhanced. [ABSTRACT FROM AUTHOR]

Plant demography has a long history resulting in a large knowledge base. Comparative analysis of this information allows exploration of the drivers of demographic patterns globally and the study of life‐history evolution. Studies aiming to generalise demographic patterns rely on data being derived from a representative sample. However, the data are likely to be taxonomically, geographically and methodologically biased. Matrix population models (MPMs) are widely‐used in plant demography, so an assessment of publications using MPMs is a convenient way to assess the distribution of plant demographic knowledge using this modelling approach. We assessed bias in this knowledge using data from the COMPADRE Plant Matrix Database, containing MPMs for > 700 species. We show that tree species and tropical areas are under‐represented, while herbaceous perennials and temperate areas are over‐represented. There is a positive association between the number of studies per country and per capita GDP. Most studies have low spatiotemporal replication with 43% of studies conducted over < four years, and only 17% replicated across > three sites. This limited spatiotemporal coverage means existing data may not represent the environmental conditions the species experience. These biases and knowledge gaps inhibit theory development and limit current utility for identifying useful generalities for management decisions, such as typical responses to climate change. It is likely that similar biases extend to other demographic modelling tools such as integral projection models. We urge researchers to address these biases and close these knowledge gaps. [ABSTRACT FROM AUTHOR]

Groups with morphological stasis are an interesting framework to address putative cryptic species that may be hidden behind traditional taxonomic treatments, particularly when distribution ranges suggest disjunct and environmentally heterogeneous biogeographic patterns. New hypotheses of delimitation of evolutionary independent units can lead to the identification of different biogeographic processes, laying the foundation to investigate their historical and ecological significance. Jasione is a plant genus with a distribution centered in the Mediterranean basin, characterized by significant morphological stasis. Within the western Mediterranean J. gr. crispa species complex, J. sessiliflora s.l. and allied taxa form a distinct group, occupying environmentally diverse regions. At least two ploidy levels, diploid and tetraploid, are known to occur in the group. The internal variability is assessed with phylogenetic tools, viz. GMYC and ASAP, for species delimitation. The results are compared with other lines of evidence, including morphology and cytology. The fitting of distribution patterns of the inferred entities to chorological subprovinces is also used as a biogeographical and environmental framework to test the species hypothesis. Despite the scarcity of diagnostic morphological characters in the group, phylogenetic delimitation supports the description of at least one cryptic species, a narrow endemic in the NE Iberian Peninsula. Moreover, the results support the segregation of a thermophilic group of populations in eastern Iberia from J. sessiliflora. Ploidy variation from a wide geographical survey supports the systematic rearrangement suggested by species delimitation. Taxonomic reorganization in J. sessiliflora s.l. would allow ecological interpretations of distribution patterns in great accordance with biogeographical regionalization at the subprovince level, supporting geobotanical boundaries as a framework to interpret species ecological coherence of cryptic lineages. These results suggest that species differentiation, together with geographic isolation and polyploidization, is associated with adaptation to different environments, shifting from more to less thermophilic conditions. Thus, the recognition of concealed evolutionary entities is essential to correctly interpret biogeographical patterns in regions with a complex geologic and evolutionary history, such as the Mediterranean basin, and biogeographical units emerge as biologically sound frameworks to test the species hypothesis. [ABSTRACT FROM AUTHOR]

Summary: The figwort family, Scrophulariaceae, comprises c. 2000 species whose evolutionary relationships at the tribal level have proven difficult to resolve, hindering our ability to understand their origin and diversification.We designed a specific probe kit for Scrophulariaceae, targeting 849 nuclear loci and obtaining plastid regions as by‐products. We sampled c. 87% of the genera described in the family and use the nuclear dataset to estimate evolutionary relationships, timing of diversification, and biogeographic patterns.Ten tribes, including two new tribes, Androyeae and Camptolomeae, are supported, and the phylogenetic positions of Androya, Camptoloma, and Phygelius are unveiled. Our study reveals a major diversification at c. 60 million yr ago in some Gondwanan landmasses, where two different lineages diversified, one of which gave rise to nearly 81% of extant species. A Southern African origin is estimated for most modern‐day tribes, with two exceptions, the American Leucophylleae, and the mainly Australian Myoporeae. The rapid mid‐Eocene diversification is aligned with geographic expansion within southern Africa in most tribes, followed by range expansion to tropical Africa and multiple dispersals out of Africa.Our robust phylogeny provides a framework for future studies aimed at understanding the role of macroevolutionary patterns and processes that generated Scrophulariaceae diversity. This article is part of the Special Collection 'Global plant diversity and distribution'. See https://www.newphytologist.org/global-plant-diversity for more details. [ABSTRACT FROM AUTHOR]

It has been widely documented that the complex structure of forest ecosystems supports considerable bryophyte species and functional diversity. In this study, we assessed the diversity, distribution and ecological and phytogeographical features of bryophytes across a gradient of temperate forest types on Mt. Papuk. This is the largest and highest mountain in the lowland, Pannonian part of Croatia, with high geological diversity and various temperate forests covering 95% of the mountain. According to the predominant tree species (oak vs. beech), geological bedrock (calcareous vs. siliceous) and soil reaction (alkaline vs. acidic), 21 study plots were classified into four distinct forest types. In all, 184 bryophyte species (35 liverworts and 149 mosses) were recorded. Although the forest types investigated did not differ significantly with respect to species richness, each was characterized by a considerable number of diagnostic bryophyte species. According to our results, one of the main ecological factors determining the variability of the forest bryophyte composition was geological bedrock and the associated soil reaction. Basiphilous forests developed on carbonate bedrock harbored more thermophilous and nitrophilous bryophytes and were characterized by southern-temperate and Mediterranean–Atlantic biogeographic elements. In contrast, acidophilous forests growing on silicate bedrock were characterized by wide-boreal and boreo-arctic–montane elements, i.e., bryophytes indicating cooler habitats and nitrogen-deficient soils. Based on the results, we hypothesized that the main latitudinal biogeographic distinction between southern and northern biogeographic elements is driven more by geological substrate than by the main tree species in forest communities. The present study confirmed previous findings that bryophytes are good and specific habitat indicators and show associations with different forest types, which can help to understand the complexity, ecological microconditions and biogeographic characteristics of forest communities. [ABSTRACT FROM AUTHOR]

The presented work is the first comprehensive study on the desmids of mountainous areas of the Gorce region in Poland. The Gorce Mts flora of the order Desmidiales comprises 20 genera and 247 species. The most diverse genera in the Gorce Mts are Cosmarium with 99 taxa, Closterium with 39 taxa, Staurastrum with 38 taxa and Euastrum with 17 taxa. All reported taxa are described and documented by original hand drawings and microphotographs. Environmental data with geographical coordinates are included for all studied sites. Among the recorded taxa, eight (Actinotaenium borgeanum, Actinotaenium gelidum, Actinotaenium perminutum, Cosmarium alpestre, Cosmarium dispersum, Cosmarium paragranatoides, Closterium sublaterale, Staurastrum pyramidatum) are new for the Polish flora. An important factor affecting the biodiversity of desmids in the Gorce area is human activity. In typically anthropogenic habitats, which in the study area include roads and paths, 157 species were found (63.7% of the Gorce desmid flora). Many montane species, such as Closterium pusillum and Cosmarium decedens, associated with wet moss on rocks, had secondary habitats there. A group of 21 species found only in anthropogenic habitats can be considered anthropophytes of the studied area. There are also semi-natural habitats in the form of meadows that persist only due to human activity. The situation is similar to that of vascular plants. Clearings used until the 1980s showed significantly higher species richness than clearings where grazing has been abandoned for a long time. Overall, human activity has contributed to an increase of desmid species diversity in the Gorce region. [ABSTRACT FROM AUTHOR]

Long-distance dispersal (LDD) beyond the range of a species is an important driver of ecological and evolutionary patterns, but insufficient attention has been given to postdispersal establishment. In this review, we summarize current knowledge of the post-LDD establishment phase in plant colonization, identify six key determinants of establishment success, develop a general quantitative framework for post-LDD establishment, and address the major challenges and opportunities in future research. These include improving detection and understanding of LDD using novel approaches, investigating mechanisms determining post-LDD establishment success using mechanistic modeling and inference, and comparison of establishment between past and present. By addressing current knowledge gaps, we aim to further our understanding of how LDD affects plant distributions, and the long-term consequences of LDD events. Dispersal is a central process in the ecology and evolution of living organisms, reducing inbreeding and competition, shaping local spatial dynamics, and allowing tracking of establishment opportunities in changing environments. Long-distance dispersal (LDD), beyond the range of a species, is rare and cannot be studied directly, but it is a central process in biogeography, contributing to both the assembly of natural biotas over millions of years and the spread of invasive species during the Anthropocene. Studies of plant LDD at biogeographical scales have focused on the initiation and transport stages but have paid little attention to the subsequent establishment stage, although establishment is necessary for LDD to impact biogeography. Establishment success is influenced by many factors, including propagule pressure, functional traits, extreme events and anthropogenic disturbances, interactions with predators, competitors and mutualists, niche flexibility, and Allee effects. We integrate quantitative LDD frameworks with phylogeographic tools to provide a general framework for estimating the probability of colonizing a new site. This integration between biogeography and movement ecology is expected to yield important new tools and insights into the interplay between ecology, evolution, and biogeography in shaping patterns of biodiversity. [ABSTRACT FROM AUTHOR]

Increasing evidence indicates that wide distributed bryophyte taxa with homogeneous morphology may represent separate evolutionary lineages. The evolutionary histories of these cryptic lineages may be related to historical factors, such as the climatic oscillations in the Quaternary. Thus, the post-glacial demographic signatures paired with cryptic speciation may result in complex phylogeographic patterns. This research has two aims: to determine whether the widespread moss Racomitrium lanuginosum represents cryptic molecular taxa across the Northern Hemisphere and to infer the effects of Quaternary glaciations on spatial genetic diversity. We used the internal transcribed spacer (ITS) marker to resolve the phylogeographic history of the species and single nucleotide polymorphisms (genotyping-by-sequencing) to infer the genetic structure and demographic history. Finally, we assessed the historical changes in the distribution range using species distribution models. Racomitrium lanuginosum comprises distinct molecular lineages sympatrically distributed in the Northern Hemisphere. We also uncovered long-distance dispersal from eastern North America to Scandinavia and potential in situ survival in northern Scandinavia. Due to the genetic signatures, the Alaska Peninsula could be considered a glacial refugium. The species experienced post-glacial expansion northwards in the Northern Hemisphere, mainly from the Alaska Peninsula. Our results exemplify the complex phylogeographic history in cold environments and contribute to recognizing evolutionary patterns in the Northern Hemisphere. [ABSTRACT FROM AUTHOR]

Copyright of Al-Adab / Al-ādāb is the property of Republic of Iraq Ministry of Higher Education & Scientific Research (MOHESR) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Premise of research. A recurring North American disjunct distribution of vascular plants exists between western North America (WNA) and the Great Lakes region (GLR) where the isolated and often threatened GLR populations are sometimes considered to be glacial relicts. Using georeferenced specimen databases and inclusion of Canadian species ranges, the historical biogeography of this enigmatic distribution can be examined. Methodology. We (1) generate the WNA-GLR vascular plant taxa list using regional floras, georeferenced localities, and maps; (2) test historical phylogeographic hypotheses by projecting suitable climate niche space to the Last Glacial Maximum (LGM) and concurrently assessing phylogeographic congruence between taxa; and (3) annotate the post-1981 literature that has contributed to the understanding of this distribution. Pivotal results. There are at least 9 genera and 53 species with this distribution. Few studies since 1981 have focused on the biogeography of these taxa, although 52 articles have cited Marquis and Voss (1981). Conservatively, 44 of 53 species' historical niche models reject the hypothesis that the species were able to persist in a midwestern glacial refugium. Taxa have different projected suitable niche space at the LGM, providing support for pseudocongruent biogeographic histories. Conclusions. The updated WNA-GLR taxa list, the preliminary assessment of historical biogeography, and the review of the scientific literature indicate that this distribution has been understudied. Investigations of additional taxa in this system will enable detailed comparative analysis between taxa and prompt discussions of geographic speciation, local adaptations in the GLR, and future persistence in the GLR in the face of climate change. [ABSTRACT FROM AUTHOR]

Interest in the study of domesticated plants increased near the end of the 18th century, mainly because of their economic potential. In the 19th century, there was a new focus on the historical understanding of species, their origin, changes in their distribution, and their evolutionary history. Charles Darwin developed an extended interpretation of species domestication, considering variations, reproduction, inheritance, and modification as standard processes between wild and domesticated organisms. In this context, one relatively neglected aspect was the geographical distribution of domesticated species. Alphonse de Candolle addressed and developed in detail the question of the geographical origin of cultivated plants. Since 1836 Alphonse de Candolle had been studying the topic and obtained evidence that contributed to understanding aspects such as the center of origin, dispersion, competition, selection, and time of domestication. Although Darwin himself admitted that Géographie botanique raisonnée (de Candolle, Alphonse,de. Géographie botanique raisonnée; ou, exposition des faits principaux et des lois concernant la distribution géographique des plantes de l’epoque actuelle, 2ème tome. Paris: Masson.) was of great help to him in the development of his evolutionary theory, the importance of de Candolle’s contribution is seldom recognized. Our purpose is to detail the dialogue between Alphonse de Candolle and Darwin on the geography of domesticated plants, to understand some of the most critical discussions that contributed to the reinterpretation of domestication under the Darwinian proposal of modified descent. [ABSTRACT FROM AUTHOR]

Because the research on the geographical distribution of species significantly influences people's understanding of species protection and utilization, it is important to study the influence of climate change on plants' geographical distribution patterns. Based on 166 distribution records and 11 climate and terrain variables, we used MaxEnt (Maximum Entropy) model and ArcGIS software to predict the potential distribution of Campsis grandiflora under climate change and then determined the dominant climate variables that significantly affected its geographical distribution. In our study, the area under the curve (AUC) value of the training data was 0.939, proving the accuracy of our prediction. Under current climate conditions, the area of potentially suitable habitat is 238.29 × 104 km2, mainly distributed in northern, central, southern, and eastern China. The dominant variables that affect the geographical distribution of C. grandiflora are temperature, precipitation and altitude. In the future climate change scenario, the total area of suitable habitat and highly suitable habitat will increase, whereas the area of moderately suitable habitat and poorly suitable habitat will decrease. In addition, the centroid of the potentially suitable area of C. grandiflora will migrate to higher latitude and higher altitudes areas. The results could give strategic guidance for development, protection, and utilization of C. grandiflora in China. [ABSTRACT FROM AUTHOR]

Thematic mapping in botany and zoology actually appears in the end of the XVIIIth century and grows in the following century. Numerous biological data allow and need, in the same time, to use mapping devices. Qualitative mapping turns gradually into quantitative mapping. If the first boundaries are ruler-drawn, these lines become more and more complex, even showing growth and extinction of living species. [ABSTRACT FROM AUTHOR]

The Neotropical Region (NR) is one of the areas with the most plant diversity globally, and its richness of vascular epiphyte (VE) species is higher than Africa and Asia combined. This richness is a consequence of the heterogeneous climate and geological history of the region, both factors also being responsible for the plant distribution patterns. Here, we aimed to explore the phytogeographic relationships of the VE in the NR using 14,636 identified records from 173 surveys exclusively of VE, carried out in 14 countries and 23 biogeographic provinces, comprising 3849 identified species. We assessed the floristic patterns and relationships with climatic variables by multivariate analysis (cluster and ordination analyses). The clustering formed 13 main groups, partly corresponding to the biogeographic units of the NR. Our results demonstrate consistent floristic patterns confirmed through the analysis of floristic similarity, corroborating previous biogeographic classifications in well-studied areas, while broader patterns were found in poorly studied areas. We found a floristic gradient pattern, which allowed us to understand the relationships between environmental conditions and floristic patterns. Furthermore, we discuss our results under the light of the history that likely shaped the current distribution patterns and richness of the VE in the NR. The VE proved to be an important model for testing biogeographic classifications. We encourage the studies of this synusia in the several geographical gaps that remain in the NR, which undoubtedly will improve further studies and support conservationist policies. [ABSTRACT FROM AUTHOR]

We analyzed plants and their traits in dolines, which are characteristic enclosed terrain depressions on carbonate (karst) plateaus. These landforms range from a few meters to over 100 m in diameter, their depth generally varying from a few meters to a few tens of meters. A pronounced ecological gradient can be found from the bottom to the top, starting from humid, cool and shaded bottoms to sunny, dry and warm slopes and tops. We sampled dolines of various depths and analyzed the distribution of plant species on the gradient and how this distribution is reflected in plant traits: chorotypes, life forms, plant architecture and strategies. We used the transect method and sampled the floristic composition from the doline bottom to the top. We collected information about plant traits from various literature sources. The results show life forms and plant architecture explain this gradient well and, to a lesser extent, also chorotypes, but functional strategies have a low explanatory power. Life forms and plant architecture are the result of adaptation of species to the environment, and chorotypes are defined as species with an overlapping geographical distribution pattern due to their distribution and environmental histories. Functional strategies, which have evolved to enable plants to succeed in various environments, unexpectedly have a low explanatory power. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Agriculture & Nature / Kahramanmaraş Sütçü İmam Üniversitesi Tarım & Doğa Dergisi is the property of Kahramanmaras Sutcu Imam Universitesi and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Ecological strategy is the tactics employed by species in adapting to abiotic and biotic conditions. The ecological strategy spectrum is defined as the relative proportion of species in different ecological strategy types within a community. Determinants of ecological strategy spectrum of plant community explored by most previous studies are about abiotic factors. Yet, the roles of biotic factors in driving variations of ecological strategy spectra of forest communities across different geographic regions remains unknown. In this study, we established 200 0.04-ha forest dynamics plots (FDPs) and measured three-leaf functional traits of tree and shrub species in four forest vegetation types across four climatic zones. Based on Grime's competitor, stress-tolerator, ruderal (CSR) triangular framework, and the StrateFy method, we categorized species into four ecological strategy groups (i.e., C-, S-, Int-, and R-groups) and related the ecological spectra of the forests to three species diversity indices [i.e., species richness, Shannon-Wiener index, and stem density (stem abundance)]. Linear regression, redundancy analysis, and variance partition analysis were utilized for assessing the roles of species diversity in regulating ecological strategy spectra of forest communities across different climatic zones. We found that the proportion of species in the C- and Int-groups increased, while the proportion of species in the S-group decreased, with the increase of three indices of species diversity. Among the three species diversity indices, stem abundance played the most important role in driving variations in ecological strategy spectra of forests across different climatic zones. Our finding highlights the necessity of accounting for biotic factors, especially stem abundance, in modeling or predicting the geographical distributions of plant species with varied ecological adaptation strategies to future environmental changes. [ABSTRACT FROM AUTHOR]

Clustering methods based on environmental variables are useful in the planning of conservation strategies for species and ecosystems. However, there is a lack of work on the regionalization of the vast space of North Africa and the distribution of plant species. The current lists of endemic plants are focused mostly on an occurrence at the country level and not on regions with different conditions. The aim of this work was to lay out an environmental scheme for northwest Africa and to collect data about the occurrence of endemic plants in this area. Clustering with 12 of 33 tested environmental rasters was performed to divide the Maghreb into environmental clusters. Then, a list of 1618 endemic plant taxa (1243 species and 375 subspecies) was prepared and their distribution in estimated environmental clusters was examined. Eleven clusters with different conditions were estimated. The main drivers of regionalization were temperature amplitude, precipitation seasonality, and precipitation of the warmest quarter. According to the occurrence of endemic plants, northwest Africa may be divided into three zones: Atlas, Mediterranean (two environmental clusters), and southern zone (eight environmental clusters). The presented results provide a good basis for understanding the spatial patterns of the Maghreb, including its environment and species diversity. A designed list of endemic plant species together with environmental data may facilitate the planning of future research in north Africa and arranging methods of biodiversity protection. [ABSTRACT FROM AUTHOR]

Aim: Plant distributions are influenced by species' ability to colonize new areas via long‐distance dispersal and propensity to adapt to new environments via niche evolution. We use otobas, a clade of ecologically dominant trees found in low‐to mid‐elevation wet forests, as a system to understand the relative importance of these processes within the Neotropics. Location: Neotropics and global. Taxon: Otoba and entire Myristicaceae. Methods: We resolve the first phylogeny of Otoba the Angiosperms353 loci and plastome sequences from 13 accessions representing seven species. We pair this with the most densely sampled phylogeny of Myristicaceae to date, inferred using publicly available plastid data. We then use environmental niche modelling, biogeographical reconstruction, phylogenetic principle components analysis and Ornstein–Uhlenbeck models to infer biogeography and examine patterns of niche evolution. Results: Myristicaceae has an Old World origin, with a single expansion into the Americas. Divergence dates, fossil evidence and a notable lack of long‐distance dispersal are consistent with a Boreotropical origin of Neotropical Myristicaceae. Mirroring the rarity of dispersal at the family level, Otoba's biogeography is marked by few biogeographical events: two expansions into Central America from a South American ancestor and a single dispersal event across the Andes. This limited movement contrasts with rapid climatic niche evolution, typically occurring across geographically proximate habitats. Main conclusion: Contrasting with previous studies, long‐distance dispersal does not need to be invoked to explain the pantropical distribution of Myristicaceae, nor the biogeography of Otoba. This likely results from the family's relatively large seeds that are dispersed by large‐bodied vertebrates. Instead, rapid niche evolution in Otoba has facilitated its occurrence throughout mesic habitats of the northern Neotropics, including the Amazon rainforest and Andean montane forests. Otoba adds to a growing group of Neotropical plant clades in which climate adaptation following local migration is common, implying an important role of niche evolution in the assembly of the Neotropical flora. [ABSTRACT FROM AUTHOR]

The present work aimed to treat and discuss the conceptualization of Biogeography, as one of the fields of study of Geography; of Phytogeography, sub-area of Biogeography, and of Phytosociology, as a sub-branch of Phytogeography, demonstrating the close connection between these and geographic science. As methodological processes consisted of literature review on the subject, document analysis on electronic sites, elaboration of a schema and explanatory table. The research points out that Physical Geography created subareas that aimed to understand natural phenomena in integral parts, Biogeography, for example, branched out into distinct parts such as Phytogeography and Phytosociology to understand the spatialization and organization of plant communities, and above all, characterize them. [ABSTRACT FROM AUTHOR]

Background: Climate change significantly influences the geographical distribution of plant species worldwide. Selecting indicator species allows for better-informed and more effective ecosystem management in response to climate change. The Korean Peninsula is the northernmost distribution zone of warm temperate evergreen broad-leaved (WTEB) species in Northeast Asia. Considering the ecological value of these species, we evaluated the current distribution range and future suitable habitat for 13 WTEB tree species designated as climate-sensitive biological indicator species. Results: Up-to-date and accurate WTEB species distribution maps were constructed using herbarium specimens and citizen science data from the Korea Biodiversity Observation Network. Current northern limits for several species have shifted to higher latitudes compared to previous records. For example, the northern latitude limit for Stauntonia hexaphylla is higher (37° 02' N, Deokjeokdo archipelago) than that reported previously (36° 13' N). The minimum temperature of the coldest month (Bio6) is the major factor influencing species distribution. Under future climate change scenarios, suitable habitats are predicted to expand toward higher latitudes inland and along the western coastal areas. Conclusions: Our results support the suitability of WTEB trees as significant biological indicators of species' responses to warming. The findings also suggest the need for consistent monitoring of species distribution shifts. This study provides an important baseline dataset for future monitoring and management of indicator species' responses to changing climate conditions in South Korea. [ABSTRACT FROM AUTHOR]

Understand the role of the drivers in vegetation pattern is essential in ecology since diversity plays a major role in the stability and maintenance of plant communities. The murundus are small and scattered earthmounds with a differentiated flora of its surrounding. In our study site (Campo Maior, Piauí, Northeastern Brazil), we classified them in three categories: presence of carnaúba (PC), presence of tucum (PT), and with the absence of palm trees (AP). Here, our goals were (1) to explore alpha diversity using the richness estimator and abundance distribution rank, expecting that palm trees could influence the richness of plant species on murundus; (2) analyzing the species richness-area relationship in the murundus, following the assumptions that the largest one holds more species; (3) find the changes in the species composition (beta diversity) between the three categories of murundus, assuming which the presence of palm trees influence the species composition; and (4) investigate if the distance between murundus is a decisive factor in the species composition, where the closest murundus are the most similar in species composition. Ours results showed that palms trees do not influence the richness of the murundus, the largest murundus are the richest ones, and the turnover predominantly determines beta diversity in the different murundus categories. Furthermore, the distance between the murundus did not determine its floristic similarity. Overall, we demonstrated which the species of palm trees are not the main drive of the plant assemblage in the murundus, however its size comprises a major factor in the richness, with great species substitution, which explains the high plant diversity. [ABSTRACT FROM AUTHOR]

Feedback between plants and their associated soil biota is an important driver of plant distribution, abundance and community composition with consequences for ecosystem functioning. The field of plant‐soil feedback (PSF) research has become an integral subdiscipline of terrestrial ecosystem ecology, and in recent decades has rapidly evolved by deepening and broadening its scope.We review the major developments in the field, discuss methodological considerations and present a way forward for new approaches to PSF research that will lead to a more generalized and predictive understanding of PSFs. We illustrate that the field of PSF research has pursued multiple dimensions, including temporal scales, biogeographic perspectives, environmental context and the level of biological resolution.Plant‐soil feedbacks have been related to successional species turnover, but our inferences are often constrained by experimental time‐scales, and anthropogenic impacts can alter or disrupt the temporal interactions between plants and soil biota. Plant‐soil feedbacks also have been used to explain spatial patterns of plant recruitment, coexistence and diversity, and have increasingly been linked to the patterns of spread and abundance of non‐native and invasive plants.In recent years, more consideration also has been given to the sensitivity of PSF to environmental context, in particularly to gradients of resource availability and changing climatic conditions (including extreme events). Here, of particular interest are the differential responses of mutualistic and antagonistic soil biota. How plants interact with different groups of soil biota has further been predicted from species' phylogenetic relatedness and increasingly also from plant chemical and morphological shoot, root and litter traits.Synthesis. In moving the field forward, future PSF research should take a multidimensional approach by explicitly considering cross‐connections between dimensions, including, for example, spatio‐temporal variation in resource availability, and trait–environment relationships across taxonomic and functional groups of plants and soil organisms. This forward movement will be accelerated by further methodological advances utilizing new types of experiments in the laboratory and in the field, as well as establishing global collaborative networks. [ABSTRACT FROM AUTHOR]

Morro Três Irmãos, in Terra Rica-PR, is located in the northwest of Paraná, under the Atlantic Forest in the interior, with the main physiognomy being the Semideciduous Seasonal Forest, with the presence of floristic elements typical of a vegetation enclave. The application of the phytosociological study in this area aims to analyze the most relevant characteristics of the area and its present conditions, using the technique of graphical representation of vegetation pyramids. The field survey was carried out according to the relevant methodology, generating a comparative analysis of the evolution of the vegetation in the area. The study resulted in qualitative and quantitative information located spatially and temporally, such as the abundance, frequency, dominance and diversity indices, in addition to the so-called species importance value, representing the vegetation of the vertically collected points. [ABSTRACT FROM AUTHOR]

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The Saxifragales is a morphologically and ecologically diverse clade of flowering plants with a cosmopolitan distribution. Although families and genera within the order exhibit classic biogeographical disjunctions, no studies to date have rigorously examined and described its historical biogeography. Here, we analyze the historical biogeography of Saxifragales by first generating a new chronogram for the order using a supermatrix approach, based on 61 loci from 251 representative members of Saxifragales. Our results suggest that Saxifragales originated in the early Albian approximately 107 Ma and diversified rapidly in the next 15 Ma, with all stem lineages of extant families present by the Campanian at approximately 75 Ma. The ancestral geographic range of the order is unclear, but ancestral range reconstructions point to an East Asian origin as the most tenable hypothesis. Ancestral ranges of the Haloragaceae/Crassulaceae clade suggest a strong signal for an Australasia origin for all families, and Saxifragaceae shows strong signal for bidirectional movement across the Asian-Alaskan land bridge during the Upper Cretaceous. Disjunct distributions are best explained by long-distance dispersal rather than vicariance, but we demonstrate that timing and directionality within particular disjunctions are similar within Saxifragales and consistent with results from distantly related angiosperm clades. [ABSTRACT FROM AUTHOR]

The development of phytogeography is an essential aspect of floral evolution. The Silurian is considered a pivotal period for the development of early land vegetation based on both macrofossil and microfossil evidence; however, the evolution of phytogeographic zonation at that time remains controversial. In this paper, we describe a new species of the rhyniopsid, Aberlemnia junggaria sp. nov., from the Pridoli (upper Silurian) of West Junggar, Xinjiang, China. The new plant consists of at least three orders of axes, an oval to reniform terminal sporangium bearing in sparse ultimate axes and sporangium with a nearly enclosed dehiscence line. A dataset of global Silurian macrofossil records was compiled, including 30 species within 24 genera from 38 localities covering 8 main paleogeographic blocks. Using these data, the spatial-temporal distribution of Silurian plant macrofossils was mapped. Biogeographic evolution is revealed for the first time by means of network analysis and cluster analysis, and two phytogeographic realms, the West Junggar-Vietnam and Laurussia-North Gondwana realms are provisionally recognized during the Pridoli Epoch. Considering the widespread microfossil evidence for land plant diversification and dispersal, this global phytogeographic zonation might have onset at an even earlier time. • A new species of rhyniopsid Aberlemnia from the upper Silurian of Junggar, Xinjiang, China. • Global Silurian macroplant occurrence dataset released. • Combined study on phytogeography with specimens and data analysis. • The first phytogeographic zonation started not later than the Pridoli Epoch. [ABSTRACT FROM AUTHOR]

[Display omitted] • This study provided a robust phylogenetic framework of Polygonatum , based on whole-plastome data. • Polygonatum originated in the HHM region during the early Miocene (c. 20.10 Ma), as well as began to radiate and disperse to other regions since the mid-Miocene. • Decreasing dysploidy accompanied by karyotype change and polyploidization in Polygonatum appears to be associated with its diversification and colonization. Clarifying the process of formation of diversity hotspots and the biogeographic connection between regions is critical in understanding the impact of environmental changes on organismal evolution. Polygonatum (Asparagaceae) is distributed across the Northern Hemisphere. It displays an uneven distribution, with more than 50% of its species occurring in the Himalaya-Hengduan Mountains (HHM). Here, we generated a time-calibrated phylogeny of Polygonatum , based on whole-plastome data, to reconstruct the genus' biogeographical history and morphological/chromosomal evolution. Our phylogenetic analyses strongly support the monophyly of Polygonatum and its division into three sections (i.e., Verticillata , Sibirica , and Polygonatum). Polygonatum originated from the HHM region during the early-Miocene (c. 20.10 Ma), and began to radiate since the mid-Miocene, driven by the uplift of the Qinghai–Tibet Plateau (QTP), increasingly colder/arid climates following the mid-Miocene Climatic Optimum (MMCO), and intensification of the East Asian winter monsoon. Dispersal from the HHM region to other regions was facilitated by the intensification of East Asian summer monsoon in response to global climatic warming during the MMCO. Decreasing dysploidy accompanied by karyotype change and polyploidization in Polygonatum appears to be associated with its diversification and colonization of new ecological niches. Our results highlight the importance of regional tectonic activities and past climatic changes from the Neogene onwards to the spatial–temporal diversification and distribution patterns of plant lineages with a wide distribution in the Northern Hemisphere. They also contribute to the knowledge of the uneven species richness between East Asia and other regions. [ABSTRACT FROM AUTHOR]