Taxacom: metapopulation biogeography

[John Grehan]

Nice example from the Missouri Botanical garden recognizing the
significance of the metapopulation concept as applied in panbiogeography.
https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.mobot.org%2FMOBOT%2Fresearch%2FAPweb%2F&data=05%7C01%7Ctaxacom%40lists.ku.edu%7C0905f497332047c9001c08dbe6c71200%7C3c176536afe643f5b96636feabbe3c1a%7C0%7C0%7C638357514900871758%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=97eYFZSn7VZM%2BAo62mAfhYs1kNbtVvp1Gd6%2Bb9iAsPo%3D&reserved=0

In reference to the origins of  Amborellaceae the site states " Assuming
that New Caledonia finally became emergent only some 37 Ma (Grandcolas et
al. 2008; Keppel et al. 2009; Cluzel et al. 2012; de Queiroz 2014; Swenson
et al. 2014, 2015; Grandcolas 2017; Nattier et al. 2017 for references),
proto-Amborella must have been hanging out somewhere else for a very long
time. However, Condamine et al. (2016) suggest that metapopulations of the
clade may have persisted on ephemeral islands in the region (see also Heads
2018a, 2023), while Wallis and Jorge (2018; see also He et al. 2016a)
suggest that New Caledonia may have remained emergent, Giribet and Baker
(2019), emphasizing the old ages of some clades endemic to the island, also
inclining in that direction."

This highlights the significance of a dynamic geography and ecological
dispersal in the persistence of taxa within regions where at one time or
another, all local land may have had a period of submergence. It seems that
after many decades this recognition is starting to sink in - despite
intensive efforts by some to have the discipline suppressed in favor of the
irrational idea of chance dispersal that is never observed and usually
supposed to have happened only once, sometimes over tens of millions of
years.

John Grehan

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https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fhepialidsoftheworld.com.au%2F&data=05%7C01%7Ctaxacom%40lists.ku.edu%7C0905f497332047c9001c08dbe6c71200%7C3c176536afe643f5b96636feabbe3c1a%7C0%7C0%7C638357514900871758%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=3xizqV%2By7RuBvUjJ3hyhRKvypERLoGmwnBjriEaIy0s%3D&reserved=0 (use the 'visit archived web site'
link, then the 'Ghost Moth Research page' link.