2024 Boreotropical

Boreotropical

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WebJul 1, 2024 · Toxicodendron is estimated to have a Boreotropical origin in the New World in the late Eocene at 37.68 Ma. It then diversified into a subtropical-temperate and a tropical lineage, followed by migrating into eastern Asia via the North Atlantic land bridges in the Oligocene to early Miocene.

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WebMay 17, 2024 · Integrating evidence from molecular, morphological, fossil, and (paleo)environmental data, we find strong support for a Boreotropical origin of the family with contrasting evolutionary trajectories between the temperate subfamily Juglandoideae and the tropical subfamily Engelhardioideae. Juglandoideae rapidly evolved frost … WebMar 15, 2024 · Additionally, the northern boreotropical forests along the potential dispersal route across the Bering land bridge were replaced after the Eocene–Oligocene transition … crossovers 2015 nb

An ancient tropical origin, dispersals via land bridges and ... - Nature

WebJul 1, 2024 · This hypothesis postulates that during climatically warm periods of the Paleogene, the boreotropical flora with many tropical and subtropical elements spanned the mid-latitudes of the Northern Hemisphere and populations could exchange between areas via land bridges, then owing to the climatic deterioration during the late Eocene, … http://www.ccina.org.cn/sys-nd/22086.html WebAug 1, 2024 · This study indicates that the biogeographic history of Urticeae likely resulted from a mixture of boreotropical migration and vicariance followed by many episodes of long-distance dispersal among continents. The presence of both winged and fleshy diaspores among the many species of Urticeae likely promoted the expansion of … crossovers 2k1

Boreotropical migration explains hybridization - JSTOR

WebBoreopricea is an extinct genus of archosauromorph reptile from the Early Triassic of arctic Russia. It is known from a fairly complete skeleton discovered in a borehole on Kolguyev … WebMar 24, 2024 · In contrast, boreotropical descendants including Hypericum that underwent niche evolution demonstrated selective advantages as climates became colder. Our results point toward macroevolutionary trajectories involving the altering fates of closely related clades that adapt to periods of global climate change versus those that do not. crossovers 2011 reviewsWebThe north temperate region was characterized by a warm climate and a rich thermophilic flora before the Eocene, but early diversifications of the temperate biome under global climate change and biome shift remain uncertain. crossover salary in india

"WebFlora boreotropical é o conjunto de plantas que poderão ter constituído uma cintura de vegetação no hemisfério norte durante o Eocénico, há 55.8 ± 0.2 - 33.9 ± 0.1 Ma. Esta seria uma vegetação florestal composta por grandes árvores de crescimento rápido (como as metasequoias), e poderia atingir latitudes de até 80ºN devido ao ... " - Boreotropical

Boreotropical

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WebMya), followed by disruption of this boreotropical vegeta-tion as a result of climate deterioration in the late Eocene and a drastic temperature drop at the Eocene-Oligocene boundary [12, 13]. African-Asian disjunctions have also been explained either by overland dispersal during the Middle Miocene climatic optimum (17–15 Ma [13]) that WebAug 27, 2014 · A boreotropical model was supported as the most likely mode of geodispersal. Diversification rates were significantly higher in the New World than in the Old World. Main conclusions. We present evidence that this group of edible EM mushrooms was ancestrally Palaeotropical from around the Eocene to the late Miocene, reaching …

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WebThese two timings correspond with the two climatic cooling intervals, which suggests that the formation and breakup of the boreotropical floral may have been responsible for the amphi-Pacific disjunct distribution within Pachygoneae. One overland migration event from Asia into Australasia appears to have occurred in the early to late Miocene. WebJun 9, 2024 · boreotropical relict distribution, that may have caused the distribution patterns in extant Sideroxyleae. Sometimes nuclear ribosomal DNA (nrDNA) and organellar DNA data support different topologies of phylogenetic trees (e.g., Smedmark and Eriksson, 2002; Kyndt et al., 2005; Zaldivar-Riveron, 2006). Therefore, it may not be enough to

WebA boreotropical migration route was supported over Indian rafting as the best fitting hypothesis to explain present-day distribution patterns within the family. Early diversification within Annonaceae fits the hypothesis of a museum model of tropical diversification, with an overall steady increase in lineages possibly due to low extinction rates. WebAdjective [ edit] boreotropical ( not comparable ) Relating to the boreotropics. This page was last edited on 25 September 2024, at 14:52. Text is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply.

WebThe global distribution of this clade makes it an excellent group to test hypotheses regarding the processes underlying tropical intercontinental disjunctions. More specifically, it allows us to test whether current distribution patterns resulted from recent transoceanic long-distance dispersal or ancient vicariance after boreotropical migration. WebJun 9, 2024 · boreotropical relict distribution, that may have caused the distribution patterns in extant Sideroxyleae. Sometimes nuclear ribosomal DNA (nrDNA) and …

Web全球气候变冷导致檬果樟属祖先类群所在的北热带植物群（ Boreotropical Flora ）由高纬度向低纬度地区退缩从而形成隔离，之后的进一步全球降温将其分布区域限制在现今亚洲和美洲的热带地区，从而形成热带环太平洋间断分布格局。

WebJan 1, 2024 · Gondwanan vicariance, long-distance dispersal (LDD), and boreotropical migration have been proposed as alternative hypotheses explaining the pantropical distribution pattern of organisms. In this study, the historical biogeography of the pond skater genus Limnogonus was reconstructed to evaluate the impact of biogeographical … build 7997WebSep 1, 2007 · To determine whether the fragmented pantropical distribution of present day Sideroxyleae primarily is the result of long-distance dispersals or represents the remnants of a once continuous distribution in the northern hemisphere, the boreotropical flora, we used phylogenetic analyses of chloroplast and nuclear ribosomal DNA data, Bayesian … crossovers 2021Webboreotropical relict distribution, that may have caused the distribution patterns in extant Sideroxyleae. Sometimes nuclear ribosomal DNA (nrDNA) and organellar DNA data support different topologies of phylogenetic trees (e.g., Smedmark and Eriksson, 2002; Kyndt et al, 2005; Zaldivar-Riveron, 2006). Therefore, it may not be enough to crossovers 2015WebAug 1, 2024 · The earliest divergences in this clade were also dated to the latest Eocene, concomitant with the southward contraction of tropical forests. Recent studies also … build 7962WebMay 28, 2024 · The Boreotropical hypothesis proposes that a widespread Boreotropical flora developed at midlatitudes of the Northern Hemisphere during the early Paleogene … crossovers 2015 nbaWebThe north temperate region was characterized by a warm climate and a rich thermophilic flora before the Eocene, but early diversifications of the temperate … crossovers aimer 歌詞WebMay 12, 2015 · Aim Gondwanan vicariance, boreotropical migration and long-distance dispersal have been posited as alternative hypotheses explaining the tropical distribution patterns and diversifications in many ... crossovers 2014