Biogeographic affiliation and centers of richness as predictors of elevational range‐size patterns for Malesian flora DOI Creative Commons
Melissa Whitman, Sabrina E. Russo

Ecography, Год журнала: 2024, Номер 2024(5)

Опубликована: Фев. 14, 2024

Our goal was to interrogate the idea that “mountain passes are higher in tropics” by investigating ecological and biogeographic drivers of elevational range‐sizes patterns among equatorial flora. We used herbarium records for 60 species‐rich plant families, representing 18 535 species total, estimate distributions over a 4500 m gradient. For each family, we estimated change average with increasing elevation (i.e. Rapoport's rule, abbreviated as ERR) quantified 15 metrics familial richness distribution, evolutionary age, affiliation. visualized covariation across families using phylogenetic principal components analysis (pPCA). then evaluated how family‐level ERR slopes correlated metric individually, well when multivariate techniques reduce dimensionality. hypothesized if long term climate stability millions years promotes habitat specialization, taxa longer‐term tropical affiliations, would expect smaller within lowland forests, greater range‐size expansion towards elevations, expressed positive slope. Conversely, variation growing conditions should promote larger, relatively consistent, at all sections an gradient, neutral results support this corollary because dichotomy observed relation distribution historical positioning. found Sundaland endemism, or restricted had slopes. Families stronger Sahul affiliation, montane centered richness, shallower, neutral, negative slopes, did clades temperate origins. Wallacea broader latitudinal distributions, cosmopolitanism, older age mixed results. conclude relative steepness slope is indicator taxonomic group's tolerance vulnerability contemporary change.

Язык: Английский

Analysis of the distribution pattern of the ectomycorrhizal fungus Cenococcum geophilum under climate change using the optimized MaxEnt model DOI Creative Commons

Yexu Zheng,

Chao Yuan, Norihisa Matsushita

и другие.

Ecology and Evolution, Год журнала: 2023, Номер 13(9)

Опубликована: Сен. 1, 2023

(

Процитировано

20
Putative Celtis Leaves from Eocene Patagonia are Allied with Asian Anacardiaceae DOI
Peter Wilf, Cynthia C. González, María A. Gandolfo

и другие.

Ameghiniana, Год журнала: 2024, Номер 61(2)

Опубликована: Фев. 28, 2024

Los macrofósiles más comunes en la flora altamente diversa de Laguna del Hunco (Eoceno temprano Chubut, Argentina) son hojas "Celtis" ameghinoi, conocidas desde hace un siglo y cuyas afinidades han sido enigmáticas. La especie representa el 14% total las fósiles censos imparciales campo, los ejemplares exhiben diversos daños producidos por alimentación insectos, lo que sugiere habrían tenido elevada biomasa e importancia ecológica. Las presentan arquitectura bien conservada, pero carecen cutículas o conexiones con estructuras reproductivas. Encontramos sólo se parecen superficialmente a Celtis taxones comparables Cannabaceae, Ulmaceae, Rhamnaceae, Malvaceae, muchas otras familias. Sin embargo, morfología foliar distintiva ajusta detalle Dobinea (Anacardiaceae), género dos especies arbustos grandes hierbas distribuye Oriente India Tíbet hasta Myanmar China central. Proponemos Dobineaites ameghinoi (E.W. Berry) gen. et comb. nov. para fósiles. Este hallazgo refuerza ya extensos vínculos biogeográficos entre Eoceno Patagonia Asia continental, proporciona primer registro fósil relacionado una rara presencia macrofósil gondwánica Anacardiaceae, familia estaba muy extendida diversificada hemisferio norte ese momento. Anacardiaceae incluye varios patrones comúnmente asociados otros grupos plantas muchos esta pueden permanecer aun mal identificados.

Процитировано

3
Osmoxylon‐like fossils from early Eocene South America: West Gondwana–Malesia connections in Araliaceae DOI Creative Commons
Peter Wilf

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

Опубликована: Май 19, 2025

Abstract Premise Araliaceae comprise a moderately diverse, predominantly tropical angiosperm family with limited fossil record. Gondwanan history of is hypothesized in the literature, but no fossils have previously been reported from former supercontinent. Methods I describe large (to macrophyll size), palmately compound‐lobed leaf and an isolated umbellate infructescence early Eocene (52 Ma), late‐Gondwanan paleorainforest flora at Laguna del Hunco Argentine Patagonia. Results The are assigned to Caffapanax canessae gen. et sp. nov. (Araliaceae). Comparable living species belong five genera that primarily distributed Malesia South China. most similar genus Osmoxylon , which centered east includes numerous threatened species. Davidsaralia christophae (Araliaceae) also comparable . Conclusions leaves infructescence, potentially representing same source taxon, oldest araliaceous macrofossils provide direct evidence family. new their enrich well‐established biogeographic climatic affinities assemblage imperiled Indo‐Pacific, everwet rainforests. likely represent shrubs or small trees, adding rich record understory vegetation recovered Hunco.

Язык: Английский

Процитировано

0
Biogeographic affiliation and centers of richness as predictors of elevational range‐size patterns for Malesian flora DOI Creative Commons
Melissa Whitman, Sabrina E. Russo

Ecography, Год журнала: 2024, Номер 2024(5)

Опубликована: Фев. 14, 2024

Our goal was to interrogate the idea that “mountain passes are higher in tropics” by investigating ecological and biogeographic drivers of elevational range‐sizes patterns among equatorial flora. We used herbarium records for 60 species‐rich plant families, representing 18 535 species total, estimate distributions over a 4500 m gradient. For each family, we estimated change average with increasing elevation (i.e. Rapoport's rule, abbreviated as ERR) quantified 15 metrics familial richness distribution, evolutionary age, affiliation. visualized covariation across families using phylogenetic principal components analysis (pPCA). then evaluated how family‐level ERR slopes correlated metric individually, well when multivariate techniques reduce dimensionality. hypothesized if long term climate stability millions years promotes habitat specialization, taxa longer‐term tropical affiliations, would expect smaller within lowland forests, greater range‐size expansion towards elevations, expressed positive slope. Conversely, variation growing conditions should promote larger, relatively consistent, at all sections an gradient, neutral results support this corollary because dichotomy observed relation distribution historical positioning. found Sundaland endemism, or restricted had slopes. Families stronger Sahul affiliation, montane centered richness, shallower, neutral, negative slopes, did clades temperate origins. Wallacea broader latitudinal distributions, cosmopolitanism, older age mixed results. conclude relative steepness slope is indicator taxonomic group's tolerance vulnerability contemporary change.

Язык: Английский

Процитировано

0