Boreotropical origin hypothesis
WebMar 24, 2024 · We hypothesize that most clusioid CPH lineages failed to adapt to temperate regimes during periods of Cenozoic climate change, and went extinct in the Holarctic. In contrast, boreotropical descendants including Hypericum that underwent niche evolution demonstrated selective advantages as climates became colder. Our results point toward ... WebJul 7, 2024 · The Boreotropical hypothesis proposes that a widespread boreotropical flora developed at midlatitudes of the Northern Hemisphere during the early Paleogene and spread around the globe via the Beringia and North Atlantic land bridges and shores of the Tethys Seaway. ... we find robust support for a Boreotropical origin of Juglandaceae …
Boreotropical origin hypothesis
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WebAug 27, 2014 · Molecular dating and ancestral-area reconstruction indicated a Palaeotropical origin of A. sect. Caesareae between the Palaeocene and Eocene. … WebMar 10, 2013 · Post-Boreotropical origin in continental Asia. Accurate calibration with multiple fossils has been suggested as a key factor in age estimation of lineages (Renner, 2005; ... This hypothesis may be corroborated by our study on the Asian origin of Paederia with a recent dispersal from Africa to Madagascar in the late Miocene ...
WebDec 16, 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 … Webtropic of Cancer, most generally invoke an ultimate origin in western Gondwana followed by dispersal from South America into North America; this is postulated to have ... a global perspective and present it as a hypothesis on the "boreotropical flora." McKenna (1972, 1975, 1983), Wolfe (1975), and Tiff-
WebManilkara is a pantropical genus of trees in the Sapotaceae comprising c. 78 species. Its distribution allows for biogeographic investigation and testing of whether rates of diversification differ amongst tropical regions. The age and geographical origin of Manilkara are inferred to determine whether Gondwanan break-up, boreotropical migration ... WebJun 16, 2009 · Our results suggest that the Rubiaceae originated in the Paleotropics and used the boreotropical connection to reach South America. The biogeographic patterns …
WebMar 1, 2024 · This hypothesis postulates that during climatically warm periods of the Paleogene, the boreotropical flora with many tropical and subtropical elements spanned …
WebThe hypothesis of exploitation ecosystems, outlined by Fretwell (1977) and analyzed by Oksanen et al. (1981, see also Oksanen 1988, 1990, T. Oksanen 1990) implies that different hypotheses involving reciprocal interactions apply to different ecosystems. The Caugh-ley-Lawton hypothesis is relevant for relatively unpro- butler county behavioral health oxford ohioWebThe boreotropics hypothesis postulates a preferential tropical biotic interchange between North America and Eurasia during the early Tertiary that was directed by Eocene thermal … cdc high cholesterol factsWebBoreotropical migration explains hybridization ... copy gene AAT, one from an African and one from an American ancestral lineage, indicating that it is of allopolyploid origin. We conclude that Sideroxyleae, including the ancestral lineages of Nesoluma, were part of the boreotropical flora and entered the ... test the phylogenetic hypothesis ... butler county benefitsWebMolecular dating and ancestral area reconstruction suggest a Eurasian origin of Sabiaceae in the late Cretaceous and a boreotropical range expansion during Paleogene. Southward migrations were inferred from continental Eurasia to the Malesian region in Sabia and in the Asian Meliosma, and from Central America to South America in the Neotropical ... butler county benefits websiteWebWe sought to reconstruct the historical biogeography of the amphi-Pacific tropical disjunct plant family Symplocaceae in the context of competing Northern Hemisphere … cdc high community levelsWebOct 1, 2024 · The Boreotropical theory postulates the presence of an extensive frost-free and humid belt reaching the northern mid-latitudes throughout the Northern Hemisphere … butler county bmv hoursWebJun 23, 2008 · Contrasting this hypothesis, an Eocene boreotropical migration scenario (see further) would be an equally possible explanation for the disjunction observed in node 1. The DIVA analysis supports a neotropical origin for the clade containing all other Burmanniaceae lineages. ... A Late Cretaceous origin of myco-heterotrophy thus … cdc high dose flu guidelines