Spatial Discontinuity of Mountain Systems and Genetic Structure of Alpine Plants: The Alps–Carpathians Disjunction in a Comparative Phylogeographical Context

Journal of Biogeography, Год журнала: 2025, Номер unknown

Опубликована: Март 18, 2025

ABSTRACT Aim In mountain areas, geographical isolation and the history of systems are believed to be among most important factors that determine population distribution connectivity. this study, we address importance discontinuity for intraspecific genetic structure by investigating whether disjunction between Alps Carpathians (and related habitat gap) is primary factor shapes high‐mountain plant populations. We compare large‐scale alpine plants from these two parts European Alpine System concerning location main split in studied species, patterns phylogeographical lineages potential influencing their distribution. Location The Carpathians. Taxon 22 alpine/subalpine vascular species. Methods performed Bayesian analysis on genome‐wide genotyping (AFLP) data reconstructed relationships individuals populations using PCoA Neighbour Joining. also AMOVA estimate contribution variation regions. Based analyses, examined locations lower‐level breaks. Results A clear was observed three species (14% species). 17 (77%) identified other or, some cases, did not observe any pattern (two 9%). found no specific biological traits correlated with Conclusions gap a shaping regional flora as it aligns first‐rank phylogeographic break minority division appears mostly at higher K values, showing internal complexity large plays less role. Several were detected, including connections nearest Eastern Alps, historical links Southern Western through latitudinally extended groups.

Язык: Английский

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Geoclimatic drivers of diversification in the largest arid and semi‐arid environment of the Neotropics: Perspectives from phylogeography

Molecular Ecology, Год журнала: 2024, Номер 33(14)

Опубликована: Июнь 15, 2024

Abstract The South American Dry Diagonal, also called the Diagonal of Open Formations, is a large region seasonally dry vegetation extending from northeastern Brazil to northern Argentina, comprising Caatinga, Cerrado, and Chaco subregions. A growing body phylogeography literature has determined that complex history climatic changes coupled with more ancient geological events produced diverse endemic‐rich biota. However, exact drivers are still under investigation, their relative strengths effects controversial. Pleistocene fluctuations structured lineages via shifts, refugium formation, corridors between Amazon Atlantic forests. In some taxa, older events, such as reconfiguration São Francisco River, uplift Central Brazilian Plateau, or Miocene inundation by marine incursions, were important. Here, we review literature, discussing each hypothesized driver diversification assessing degree support. Few studies statistically test these hypotheses, most support drawn associating encountered phylogeographic patterns population structure timing geoclimatic events. Across statistical studies, hypotheses well supported, exception Arc Hypothesis. taxonomic regional biases persist, proportional overabundance herpetofauna under‐representation studies. Overall, both climate change Neogene shaped evolution biota, though precise regionally taxonomically varied. We encourage further use model‐based analyses evolutionary scenarios, interdisciplinary collaborations progress field beyond its current focus on traditional set hypotheses.

Язык: Английский

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Metabarcoding reveals high‐resolution biogeographical and metaphylogeographical patterns through marine barriers

Journal of Biogeography, Год журнала: 2022, Номер 50(3), С. 515 - 527

Опубликована: Дек. 29, 2022

Abstract Aim It has been predicted that there should be concordance between biogeographical and phylogeographical processes structuring multi‐species regional assemblages. We hypothesise oceanographic barriers in the marine environment affect concomitantly distribution connectivity of biota, thus producing congruent structures. also predict macro‐ meio‐eukaryotes will differentially affected by hydrological features. Location The Atlanto‐Mediterranean transition along E Iberian coast marked Almeria‐Oran Front (AOF) Ibiza Channel discontinuities. Taxon Eukaryotes. Methods A new analytical framework based metabarcoding community DNA a hypervariable marker is presented. This allows simultaneous detection multispecies Shallow hard‐bottom communities were sampled at 12 sites over littoral zone community‐DNA was performed using cytochrome c oxidase I marker. resulting dataset analysed several levels: beta diversity Molecular Operational Taxonomic Units (MOTUs) as surrogate for species, Exact Sequence Variants haplotypes. assessed genetic differentiation within MOTUs (metaphylogeography). Analyses combined separately meio‐eukaryotes. Results Both discontinuities had detectable effect, more all levels AOF than Channel. MOTU provided clear‐cut patterns ESVs. metaphylogeographical approach highest resolution terms differentiating localities identifying geographical barriers. separate analyses showed higher latter, both differentiation. Main Conclusions Metabarcoding coupled with metaphylogeography allowed characterisation heterogeneity composition population structure transition, coherent known methodology unlocks vast amount information on different components biodiversity basic applied research.

Язык: Английский

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Towards a comprehensive view on evolutionary refugia in West African rainforests

Frontiers of Biogeography, Год журнала: 2025, Номер 18

Опубликована: Март 17, 2025

West African rainforests are amongst the world’s premier biodiversity hotspots. Over time, size and distribution of these have changed significantly due to fluctuations in climate. However, compared other hotspots, our understanding potential rainforest refugia remains relatively limited. Studies from different disciplines provided valuable insights into location, age evolutionary role. Fossil pollen data comparative biogeography studies revealed cycles contraction expansion linked aridification used patterns identify large-scale refugia. Phylogeographic mostly corroborated existence locality refugia, but also unearthed putative presence microrefugia; smaller isolated regions that jointly form larger refuge zones (macrorefugia). Moreover, some seem harbour deep lineages, potentially reflecting long-term stability, whereas others may been stable during more recent cycles. splits congruent across species, asynchronous frequently align with both climatically unstable landscape features, such as rivers. These temporal biogeographic aspects further explored using demographic Species Distribution Modelling (SDM). Across various taxa, methods show populations suitable habitat retracted expanded, promoting macro-evolutionary change. Climatic thus appear played an important role shaping biodiversity. Overall, research shifted identifying quantifying their driving scarcity linking detailed changes demography SDM limits ability make general statements regarding dynamics, predict species response climate change prioritise future Palaeoclimatic led fragmentation rainforests. Several (e.g. Mount Nimba, Cape Three Points, Palmas Niger Delta) repeatedly identified data, phylogeographic analyses point microrefugia within beyond regions. Some sustained persistence since Miocene (i.e. Fouta Djallon Ghana), while supported (Pleistocene), suggesting operated at time-scales. Refugia not sole driver diversification, a key diversification rainforest-dependent combination factors like river barriers. Future would benefit investigating broader range exploring lesser-known or adopting approaches achieve comprehensive dynamics varying environments.

Язык: Английский

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Comparative population genetics of congeneric limpets across a biogeographic transition zone reveals common patterns of genetic structure and demographic history

Molecular Ecology, Год журнала: 2023, Номер 32(14), С. 3812 - 3825

Опубликована: Май 10, 2023

Abstract The distribution of genetic diversity is often heterogeneous in space, and it usually correlates with environmental transitions or historical processes that affect demography. coast Chile encompasses two biogeographic provinces spans a broad gradient together oceanographic linked to coastal topography can species' diversity. Here, we evaluated the connectivity demography four Scurria limpets, S. scurra , variabilis ceciliana araucana between ca. 19° S 53° Chilean using genome‐wide SNPs markers. Genetic structure varied among species which was evidenced by species‐specific breaks shared breaks. One located at 22–25° observed while second break around 31–34° three species. Interestingly, identified are also other low‐disperser invertebrates. Demographic histories show bottlenecks populations recent population expansion all be features acting as soft barriers dispersal climate, evidencing utility comparing multiple sympatric understand influence particular seascape on

Язык: Английский

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Evolutionary origins of the eastern North American–Mesoamerican floristic disjunction: Current status and future prospects

American Journal of Botany, Год журнала: 2023, Номер 110(3)

Опубликована: Фев. 16, 2023

Biogeographic disjunction patterns, where multiple taxa are shared between isolated geographic areas, represent excellent systems for investigating the historical assembly of modern biotas and fundamental biological processes such as speciation, diversification, niche evolution, evolutionary responses to climate change. Studies on plant genera disjunct across northern hemisphere, particularly eastern North America (ENA) Asia (EAS), have yielded tremendous insight geologic history rich temperate floras. However, one most prevalent patterns involving ENA forests has been largely overlooked: that cloud Mesoamerica (MAM), with examples including Acer saccharum, Liquidambar styraciflua, Cercis canadensis, Fagus grandifolia, Epifagus virginiana. Despite remarkable nature this pattern, which recognized over 75 years, there few recent efforts empirically examine its ecological origins. Here I synthesize previous systematic, paleobotanical, phylogenetic, phylogeographic studies establish what is known about pattern provide a roadmap future research. argue evolution fossil record Mexican flora more broadly, represents key missing piece in broader puzzle hemisphere biogeography. also suggest ENA-MAM an system examining questions how traits life strategies mediate change predicting broadleaf will respond ongoing climatic pressures Anthropocene.

Язык: Английский

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Tracing evolutionary trajectories in the presence of gene flow in South American temperate lizards (Squamata: Liolaemus kingii group)

Evolution, Год журнала: 2024, Номер 78(4), С. 716 - 733

Опубликована: Янв. 23, 2024

Abstract Evolutionary processes behind lineage divergence often involve multidimensional differentiation. However, in the context of recent divergences, signals exhibited by each dimension may not converge. In such scenarios, incomplete sorting, gene flow, and scarce phenotypic differentiation are pervasive. Here, we integrated genomic (RAD loci 90 individuals), (linear geometric traits 823 411 individuals, respectively), spatial, climatic data to reconstruct evolutionary history a speciation continuum liolaemid lizards (Liolaemus kingii group). Specifically, (a) inferred population structure group contrasted it with variability; (b) assessed role postdivergence flow shaping phylogeographic patterns; (c) explored ecogeographic drivers diversification across time space. We eight clusters exhibiting leaky genetic borders coincident geographic transitions. also found evidence resulting transgressive evolution one species. Predicted ancestral niches unveiled suitable areas southern eastern Patagonia during glacial interglacial periods. Our study underscores integrating different model-based approaches determine underlying causes diversification, challenge faced recently diverged groups. highlight Liolaemus as model system for broader studies.

Язык: Английский

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Geographic barriers but not life history traits shape the phylogeography of North American mammals

Global Ecology and Biogeography, Год журнала: 2024, Номер 33(8)

Опубликована: Июнь 6, 2024

Abstract Aim Synthesize literature on genetic structure within species to understand how geographic features and traits influence past responses climate change. Location North America. Time Period We synthesized phylogeographic studies from 1978 2023, which describe lineages that diverged during the Pleistocene (≥11,700 years ago). Major Taxa Studied Mammals. Methods conducted a review map breaks in distributions, then tested set of hypotheses (e.g., mountains, rivers) explain their position by comparing break locations grid each species' sampled range using logistic regression. meta‐analysis species‐specific model estimates ask if life‐history explained variation barriers were most important response Results Our findings reveal heterogeneity both where American mammal phylogeography has been studied density across 229 species. found relatively high concordance among carnivores, ungulates lagomorphs, associated with major water bodies even terrain. In contrast, we variability rodents shrews, no evidence intrinsic factors related dispersal ability importance hypothesized all Main Conclusions Southern Mexico is hotspot for yet be integrated into broader story phylogeography. show mountains play particularly roles as barriers, but substantial orders suggests there more besides shared climatic or phylogenetic histories. Thus, understanding individual will continue given our results suggest may respond future global

Язык: Английский

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Multiplexing PCR allows the identification of within‐species genetic diversity in ancient eDNA

Molecular Ecology Resources, Год журнала: 2024, Номер 24(3)

Опубликована: Янв. 8, 2024

Sedimentary ancient DNA (sedaDNA) has rarely been used to obtain population-level data due either a lack of taxonomic resolution for the molecular method used, limitations in reference material or inefficient methods. Here, we present potential multiplexing different PCR primers retrieve genetic from sedaDNA samples. Vaccinium uliginosum (Ericaceae) is widespread species with circumpolar distribution and three lineages present-day populations. We searched 18 plastid genomes intraspecific variable regions developed 61 primer sets target these. Initial multiplex testing resulted final set 38 sets. These were analyse 20 lake samples (11,200 cal. yr BP present) five localities northern Norway, Alps Polar Urals. All known V. these all could be recovered data. For each sample on average 28.1 sets, representing 34.15 sequence variants, recovered. sediment dominated by single lineage, except Alpine which had co-occurrence two lineages. Furthermore, lineage turnover was observed suggesting that phylogeographical studies may overlook past patterns. Multiplexing promising tool generating information sedaDNA. The relatively simple method, combined high sensitivity, provides scalable will allow researchers track populations through time space using environmental DNA.

Язык: Английский

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Genomic divergence and demographic history of Quercus aliena populations

BMC Plant Biology, Год журнала: 2024, Номер 24(1)

Опубликована: Янв. 9, 2024

Abstract Background Quercus aliena is a major montane tree species of subtropical and temperate forests in China, with important ecological economic value. In order to reveal the species’ population dynamics, genetic diversity, structure, association mountain habitats during evolutionary process, we re-sequenced genomes 72 Q. individuals. Results The whole chloroplast nuclear were used for this study. Phylogenetic analysis using genome dataset supported four clades , while three clades. Sex-biased dispersal had critical role causing discordance between genomes. Population structure showed two groups aliena. effective size sharply declined 1 Mya, coinciding Poyang Glaciation Eastern China. Using genotype–climate analyses, found positive correlation allele frequency variation SNPs temperature, suggesting has capacity adapt changing temperatures. Conclusion Overall, study illustrates divergence, genomic variation, processes behind demographic history .

Язык: Английский

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