Phylogenetics, diversification, and biogeography of Azorella (Apiaceae), with a special focus on the Australasian clades

Brittonia, Год журнала: 2025, Номер unknown

Опубликована: Март 10, 2025

Язык: Английский

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Jurassic Fern Piazopteris from the Girón Group, Colombia: A Taxonomic and Paleoenvironmental Evaluation

Journal of South American Earth Sciences, Год журнала: 2025, Номер unknown, С. 105488 - 105488

Опубликована: Март 1, 2025

Язык: Английский

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Museomics and the Systematics of the Atlantic Forest Nurse Frogs (Dendrobatoidea: Aromobatidae: Allobatinae)

Bulletin of the American Museum of Natural History, Год журнала: 2025, Номер 2025(472)

Опубликована: Май 6, 2025

Язык: Английский

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Fossils of an endangered, endemic, giant dipterocarp species open a historical portal into Borneo's vanishing rainforests

American Journal of Botany, Год журнала: 2025, Номер unknown

Опубликована: Май 8, 2025

Abstract Premise Asia's wet tropical forests face a severe biodiversity crisis, but few fossils record their evolutionary history. We recently discovered in situ cuticles on fossil leaves, attributed to the giant rainforest tree Dryobalanops of iconic Dipterocarpaceae family, from Plio‐Pleistocene Brunei Darussalam (northern Borneo). Studying these specimens allowed us validate generic identification and delineate affinities living dipterocarp species. Methods compared leaf architecture leaves with seven Results The cuticular features shared between extant , including presence stomata veins, confirm placement. characters are identical those D. rappa an IUCN red‐listed Endangered, northern Borneo endemic. monodominance at site, along Dipterocarpus spp. fossils, indicates dipterocarp‐dominated forest near mangrove‐swamp depocenter, most likely adjacent peatland. Conclusions first evidence endangered species show how analysis can help illuminate poorly known floristic history Asian tropics. This discovery highlights new potential for inform heritage values paleoconservation Southeast Asia.

Язык: Английский

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Assessing angiosperm phylodiversity patterns in Argentine phytogeographical provinces using presence-only data

Botanical Journal of the Linnean Society, Год журнала: 2025, Номер unknown

Опубликована: Март 30, 2025

Abstract Studying spatial patterns of biodiversity allows us to infer how different ecological and evolutionary processes have interacted, but also understand its current distribution in order preserve it. The Argentinian flora is rich diverse due the variety environments that country includes. It has traditionally been classified into phytogeographical provinces, this being one most widely used bioregionalization schemes Argentina. Since these provinces reflect both historical dimensions, we propose analyse their angiosperm phylogenetic diversity using measures structure. results show divergence was generally lower with cold dry climates (e.g. Puna, Monte, Patagonia, Altoandina). Conversely, warm humid subtropical Paranaense, Yungas, Chaco), phylodiversity levels were higher. Although agree ‘tropical niche conservatism’ hypothesis, higher found Subantarctica province, consistent here ‘Austral hypothesis. Differences timescales over which accumulates, distinguishing Yungas from Paranaense provinces. This study aims contribute knowledge Argentine Southern Cone flora.

Язык: Английский

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Climbing Higher: Exploring Northern Andean Origin and Non‐Floral Trait Evolution in a Rapid, Recent Angiosperm Radiation

Journal of Biogeography, Год журнала: 2025, Номер unknown

Опубликована: Май 19, 2025

ABSTRACT Aim The centropogonid clade comprising Burmeistera H.Karst. & Triana, Centropogon C.Presl and Siphocampylus Pohl stands out as one of the most rapid plant radiations in Neotropics. We investigated origin diversification to enhance our understanding fruit evolution other non‐floral traits genus. By exploring interplay morphological, ecological geographical factors, we sought provide new insights into how these elements have influenced evolutionary trajectory . Location Time Period Late Pliocene present. Taxon Triana (Lobelioideae: Campanulaceae). Methods Using Hyb‐Seq data from 329 nuclear loci, reconstructed a phylogenetic tree using maximum likelihood RAxML calibrated final with prior age estimates for Lobelioideae. Additionally, estimated species ASTRAL performed various comparative analyses explore historical biogeography across Results originated Western Cordillera Colombian Andes, dispersing rest Northern Andes Central America between Mid‐Pleistocene. Inflated fruits evolved multiple times genus, their distribution varying by region but reaching highest proportion eastern slopes Andes. Higher elevations larger sizes both increased diversification, especially late‐branching characterised inflated berries climbing habit, which underscores role driving diversification. Main Conclusions Studies diverse overlooked taxa, such , can greatly aid ecology Neotropical cloud forest ecosystems.

Язык: Английский

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The stepwise rise of angiosperm‐dominated terrestrial ecosystems

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Год журнала: 2025, Номер unknown

Опубликована: Май 30, 2025

ABSTRACT Angiosperms are the most diverse and abundant plant taxon today dominate majority of Earth's terrestrial ecosystems. They underwent rapid divergence biogeographic expansion from early to middle Cretaceous. Yet, transformative ecosystem change brought about by increased ecological dominance angiosperms unfolded progressively until Late After Cretaceous–Paleogene (K–Pg) boundary, restructured ecosystems towards a modern form. By Neogene, crown groups that make up angiosperm biodiversity radiated, regional floristic distinctions were established concurrently with steepened latitudinal vertical temperature gradients. Here, we summarize, based on fossils molecular evidence, when how came diversify, dominate, shape ecosystems, leading emergence spread angiosperm‐dominated floras. We highlight five major phases evolution took place against background palaeogeography climate changes. There is consistent delay in after lineage origination taxonomic diversification, as result which did not achieve across biomes single step. The patterns diversity seen among extant angiosperms, dominant within restriction different parts world, reflect contingent nature process diversification context long‐term, substantial ongoing environmental change. Determining origins, continues be challenge requires elucidation their forms, functions, habitats, interactions throughout evolutionary history.

Язык: Английский

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Current Forest–Savanna Transition in Northern South America Departs from Typical Climatic Thresholds

Ecosystems, Год журнала: 2023, Номер 27(1), С. 61 - 76

Опубликована: Авг. 25, 2023

Abstract The forest–savanna transition is the most widespread ecotone in tropics, with important ecological, climatic, and biogeochemical implications at local to global scales. However, factors mechanisms that control this vary among continents regions. Here, we analyzed which best explain northern South America (Llanos ecoregion northwestern Amazon), where common thresholds on typical environmental (for example, mean annual precipitation (MAP), wet season precipitation) fail predict it. For instance, savannas Llanos occur MAP levels (> 1500 mm) are of forests other tropical We examined transition’s climate features, soils, disturbance (fire frequency) spaces using remotely sensed data. used logistic generalized linear models assess effect seasonal (season length) intra-seasonal (daily frequency intensity) metrics during dry season, soil silt content, fire frequency, canopy cover, tree maximum Plant Area Volume Density as vegetation structure descriptor variables. Fire were variables explaining transition. Although fires savannas, found a significant percentage savanna pixels (46%) had no fires. This study indicates should be characterized regionally response biogeographic differences climatic space) regions continents. Our results highlight importance determining America. Furthermore, future studies consider regional space forest improve projections change impacts these highly diverse ecosystems.

Язык: Английский

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The rapid radiation of Bomarea (Alstroemeriaceae: Liliales), driven by the rise of the Andes

Evolution, Год журнала: 2023, Номер 78(2), С. 221 - 236

Опубликована: Окт. 11, 2023

Abstract Geological events such as mountain uplift affect how, when, and where species diversify, but measuring those effects is a longstanding challenge. Andean orogeny impacted the evolution of regional biota by creating barriers to gene flow, opening new habitats, changing local climate. B⁢o⁢m⁢a⁢r⁢e⁢a (Alstroemeriaceae) are tropical plants with (often) small, isolated ranges; in total, occur from central Mexico Chile. This genus appears have evolved rapidly quite recently, rapid radiations often challenging resolve traditional phylogenetic inference. In this study, we apply phylogenomics—with hundreds loci, gene-tree-based data curation, multispecies-coalescent approach—to infer phylogeny B⁢o⁢m⁢a⁢r⁢e⁢a. We use untangle potential drivers diversification biogeographic history. particular, test if contributed find that originated Andes during mid-Miocene, then spread north, following trajectory uplift. Furthermore, lineages diversified faster than non-Andean relatives. thus demonstrates that—at least some cases—geological change rather environmental stability has driven high diversity biodiversity hotspot. These results also demonstrate utility (and danger) genome-scale for making macroevolutionary inferences.

Язык: Английский

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The establishment of Palaeotropical rainforests from Africa to Oceania in relation to plate tectonics and zonal tropical climates

Geological Society London Special Publications, Год журнала: 2024, Номер 549(1)

Опубликована: Март 26, 2024

Abstract Old-world rainforests of the Palaeotropical Kingdom became established at different times in regions with changing opportunities for plant dispersals relation to Late Cretaceous and Cenozoic plate movements climate change. The Neotropical kingdoms differentiated Cretaceous. Maastrichtian records fossil Dipterocarpus pollen from Sudan show that canopy-forming dipterocarp genera evolved Africa, Dipterocarpoideae other taxa dispersed India Africa–India Floristic Interchange. As Indian Plate drifted towards Asia Eocene, multiple lineages SE about 48 Myr onwards, replacing a depauperate flora East Asian affinity. Tectonic models are conflicting, these differences strongly impact interpretations subsequent evolution rainforests. lowland floras islands Eastern Indonesia Oceania originated due mainly after those areas rose above sea-level during Neogene. formed equatorial Africa Campanian, late Paleocene, middle Eocene Miocene. current megadiverse essentially descended immigrant taxa.

Язык: Английский

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