The Potential Habitat Response of Cyclobalanopsis gilva to Climate Change

Plants, Journal Year: 2024, Volume and Issue: 13(16), P. 2336 - 2336

Published: Aug. 22, 2024

Cyclobalanopsis gilva, a valuable timber species in China, holds significant importance for understanding the constraints imposed by climate change on dynamic geographic distribution of tree species. This study utilized MaxEnt maximum entropy model to reconstruct migratory dynamics C. gilva geographical since Last Glacial Maximum. The objective was comprehend restrictive mechanisms environmental factors its potential distribution, aiming provide insights mid-to-long-term afforestation planning gilva. optimized exhibited significantly high predictive accuracy, with an average AUC value 0.949 ± 0.004 modern suitable habitat total area contemporary times 143.05 × 104 km2, highly 3.14 km2. primarily located southeastern regions while concentrated eastern Fujian and central-eastern Taiwan. Bioclimatic variables such as mean diurnal range (Bio2), min temperature coldest month (Bio6), precipitation driest quarter (Bio17), (Bio14) predominantly influenced pattern playing leading role. With global warming, there is risk fragmentation or even loss 2050 2090. Therefore, findings this can contribute initiating conservation campaign

Language: Английский

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A phylogenetic approach identifies patterns of beta diversity and floristic subregions of the Qinghai-Tibet Plateau

Plant Diversity, Journal Year: 2023, Volume and Issue: 46(1), P. 59 - 69

Published: July 21, 2023

Patterns of taxonomic and phylogenetic beta diversity their relationships with environmental correlates can help reveal the origin evolutionary history regional biota. The Qinghai-Tibet Plateau (QTP) harbors an exceptionally diverse flora, however, a perspective has rarely been used to investigate its floristic regions. In this study, we approach identify patterns quantitatively delimit regions on Plateau. We also examined between multifaceted diversity, geographical distance, climatic difference, evaluated relative importance various factors (i.e., climate, topography history) in shaping diversity. Sørensen dissimilarity indices indicated that species turnover among sites dominated QTP. found both were significantly related distance difference. contributed most these include annual precipitation, mean temperature, gradients instability. Hierarchical dendrograms non-metric multidimensional scaling ordination based data identified ten subregions Our results suggest contemporary environment historical climate changes have filtered composition eventually determined plants

Language: Английский

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Geographic patterns of taxonomic and phylogenetic β-diversity of angiosperm genera in regional floras across the world

Plant Diversity, Journal Year: 2023, Volume and Issue: 45(5), P. 491 - 500

Published: July 29, 2023

Beta diversity (β-diversity) is the scalar between local (α) and regional (γ) diversity. Understanding geographic patterns of β-diversity central to ecology, biogeography, conservation biology. A full understanding origin maintenance requires exploring both taxonomic phylogenetic β-diversity, as well their respective turnover nestedness components, at different evolutionary depths. In this study, we explore map for angiosperm genera in floras across world. We examine constituent tip-weighted basal-weighted relate them latitude. On one hand, our study found that global distribution highly heterogeneous. This case β-diversity. other there are consistent among metrics most cases, negatively associated with latitude, particularly Northern Hemisphere. Different strongly positively correlated counterparts

Language: Английский

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Africa as an evolutionary arena for large fruits

New Phytologist, Journal Year: 2023, Volume and Issue: 240(4), P. 1574 - 1586

Published: June 19, 2023

Strong paleoclimatic change and few Late Quaternary megafauna extinctions make mainland Africa unique among continents. Here, we hypothesize that, compared with elsewhere, these conditions created the ecological opportunity for macroevolution geographic distribution of large fruits. We assembled global phylogenetic, fruit size data palms (Arecaceae), a pantropical, vertebrate-dispersed family > 2600 species, integrated on extinction-driven body reduction in mammalian frugivore assemblages since Quaternary. applied evolutionary trait, linear null models to identify selective pressures that have shaped sizes. show African palm lineages evolved towards larger sizes exhibited faster trait rates than elsewhere. Furthermore, largest fruits across species was explained by occurrence Africa, especially under low canopies, extant megafauna, but not downsizing. These patterns strongly deviated from expectations model stochastic (Brownian motion) evolution. Our results suggest provided distinct arena argue megafaunal abundance expansion savanna habitat Miocene advantages persistence plants

Language: Английский

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Patterns and drivers of phylogenetic diversity of seed plants along an elevational gradient in the central Himalayas

Global Ecology and Conservation, Journal Year: 2023, Volume and Issue: 47, P. e02661 - e02661

Published: Sept. 28, 2023

The how and why of the spatial variation in biodiversity is one fundamental topics biogeography research, but accurate insights require incorporation phylogenetic information. Here, to provide a better understanding origin mechanism montane ecosystems thus support conservation planning, we explored elevational patterns diversity structure seed plants Gyirong Valley, longest valley China's central Himalayas. observed were related climatic, historical, geographical, disturbance-related factors, relative contributions these factors explaining them assessed. Our results showed that Himalayas described by strongly hump-shaped pattern, peaking at 2700 m around. was characterized overdispersion lower elevations clustering higher elevations, reflecting cooperation between interspecies competition environmental filtering community assembly. Among examined climatic highest explanatory power, suggesting largely driven rather than other factors. In summary, our finding indicating mild climate presumably encourage differentiation promoting competition, whereas increasingly harsh condition with elevation may lead closer relatedness through filtering. Overall, findings improve knowledge about gradient Himalayas, highlight need for intensified efforts middle as well greater scientific concern regarding impact change on biodiversity.

Language: Английский

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Environment and management jointly shape the spatial patterns of plant species diversity of moist grasslands in the mountains of northeastern Yunnan

Plant Diversity, Journal Year: 2024, Volume and Issue: 46(6), P. 744 - 754

Published: April 19, 2024

Grasslands account for about a quarter of the Earth's land area and are one major terrestrial ecosystems, with significant ecological economic value. The influence environmental factors management types on grassland biodiversity has garnered considerable attention. This study investigated how patterns species richness influenced by geographical distance, gradients, type in grasslands northeastern Yunnan, China. We used structural equation modeling to disentangle impacts environment phylogenetic community structure, partial Mantel tests estimate roles dispersal limitation filtering taxonomic beta diversity three grasslands. Our results show that alpha increased grazed decreased mowed grasslands, compared protected However, structure both communities was clustered, whereas random. Moreover, grazing mowing significantly reduced lowest values observed Both were dominated turnover under different types. diversities simultaneously affected limitation, later playing stronger role. In addition, related measures had effect as reflected changes composition.

Language: Английский

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Taxonomic and phylogenetic β‐diversity of regional assemblages of angiosperm species in relation to geographic and climatic determinants in Africa

Journal of Biogeography, Journal Year: 2024, Volume and Issue: unknown

Published: June 4, 2024

Abstract Aim Beta‐diversity quantifies the change in taxonomic and phylogenetic composition between areas, is a scalar local ( α ) regional γ diversity. Geographic distance, which reflects dispersal limitation, climatic environmental filtering, are major drivers of β‐diversity. Here, we analyse comprehensive data set angiosperms floras across Africa to assess relationships β‐diversity, its components, three types variables (current climate, Quaternary climate topographic heterogeneity) thought drive Location Africa. Taxon Angiosperms. Methods was divided into 27 regions. Species lists for each region were collated. The both their respective turnover nestedness with geographic distances assessed. Results This study showed that (1) regions lowest β‐diversity located moist tropical climates, (2) components negatively correlated other, (3) higher than Africa, (4) variation more strongly associated current heterogeneity (5) component independently explained by distance much larger Main Conclusions finding suggests limitation plays greater role filtering shaping angiosperm Of factors, important

Language: Английский

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Global patterns and determinants of phylogenetic beta diversity among liverwort floras

Journal of Biogeography, Journal Year: 2024, Volume and Issue: 51(12), P. 2383 - 2394

Published: Aug. 23, 2024

Abstract Aim Investigating phylogenetic beta diversity, and its turnover nestedness components, can shed light on the evolutionary causes shaping similarity (or dissimilarity) in composition between biological assemblages. Liverworts are important constituents of most terrestrial ecosystems worldwide but studies diversity liverworts scarce. Here, we explore geographic patterns two components across world evaluate relative importance dispersal limitation environmental filtering processes at different spatial extents by relating or to climatic distances. Location Global. Taxon Liverworts. Methods We conducted correlation regression analyses relate (turnover nestedness) six variables representing current climate conditions historical (Quaternary) change, distances (global, continental, regional). Results found that eight climates considered, precipitation seasonality was strongest determinant liverworts. At global extent, explained similar amounts variation turnover, whereas continental distance more than five seven continents, a regional extent (roughly circle 4000 km diameter), generally had greater effect turnover. Main Conclusions conclude both played an role structure liverwort floras, their varies scales among regions.

Language: Английский

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Environmental suitability throughout the late quaternary explains population genetic diversity

Ecography, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 10, 2024

Genetic variation among populations is reflected in biogeographic patterns for many species, but general rules of spatial genetic have not been established. In this paper, we establish a theoretical framework based on projecting environmental Grinellian niches back through time to relate the present geographic distribution population structure given species' historical evolutionary context. Thanks advances next‐generation sequencing technologies, as well more accurate climate models and amassing information stored biological collections, it possible implement directly. We develop case study tassel‐eared squirrel Sciurus aberti jointly analyze spatial, environmental, data predict endemic area species. Our results reveal that cases isolation by distance, prevalence suitability over corresponds fixation index ( F st ) with respect source population. Populations closer show higher diversity lower value. This empirical example relates framework, allowing two further advances: 1) layer explanation obtained from genomic methods; 2) predictive maps support biodiversity conservation efforts. Overall, work perspective integrates genetics species distribution. The limitations posed should be considered before implementing (SPA) way different taxa. Otherwise, predictability product stability may adequate.

Language: Английский

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Spatial and climatic drivers of β‐diversity in assemblages of angiosperm genera across the world

Journal of Ecology, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 30, 2024

Abstract β‐diversity quantifies the change in taxonomic and phylogenetic composition between areas. It can be partitioned into two additive components (turnover nestedness). Geographic distance, which reflects dispersal limitation, climatic environmental filtering, are major drivers of β‐diversity, but few studies have assessed their relative importance to at a global scale. Here, we investigate relationship angiosperm genera regional floras worldwide conditions within regions geographic distances regions. We found that (1) current climate has stronger effect on turnover than does Quaternary change; (2) variables examined, mean annual temperature is strongest driver turnover, followed by precipitation seasonality; (3) with high seasonality turnover; (4) scale, variation explained jointly is, average, much larger uniquely either distance explains more distance. Synthesis . These results reveal synergistic role isolation filtering determining worldwide, less influence changes.

Language: Английский

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