[Taxacom] Taxacom Digest, Vol 128, Issue 5 Biogeography and ecology excerpts

John Grehan calabar.john at gmail.com
Mon Dec 5 13:38:56 CST 2016


But how does one know that ALL of Cuba disappeared completely beneath the
sea (all at the same time) even once?

John Grehan

On Mon, Dec 5, 2016 at 2:23 PM, Antonio López Almirall <cycas at mnhnc.inf.cu>
wrote:

>
>
> Biogeography and ecology excerpts
>
> The ecological factor may be present in the formation of new species, but
> it is only one factor. 51% of the flora is endemic in Cuba. The Group of
> islands that have formed this archipelago has disappeared completely in
> more than one dozen occasions from the Oligocene. This with a minimum of
> germplasm from the now nearby continents.
> the ecological factor can be present in the formation(training) of new
> species(kinds), but one more factor is alone. In Cuba 51 % of the flora is
> endemic. The set of islands that have formed(trained) this Archipelago has
> disappeared completely in more than one dozen of occasions from the
> Oligocene. This with a minimum of germoplasma from the continents now
> nearby.
> The adaptative irradiation is visible in many cases, since it is the
> settling of little areas of limestones for Pinus cubensis, which is typical
> of the ultramapfic rocks
> However, the more interesting happens with the CoEvolution. The island
> came often plants but not its apparent obligatory symbiotic organisms. So
> shoegazing coexisting on the continent with the genus Azteca, in Cuba
> developed species that do not have these ants, which include Cecropia
> peltata, Acacia spp., Cordia alliodora. To the reverse. many generalist
> species as Apis melifera, found in Cuba endemics ideal to produce honey.
>
> Processes vicariants in Cuba are the daily bread. The species of the genus
> Magnolia, scattered by them birds, have differents species isolated between
> if in them different systems mountain. It is high inexplicable: on Pinus
> Cubensis, there are living two groups morphologically and fenologically,
> which makes almost impossible its crossing. However, until the moment not
> have found markers genetic capable of differentiating them.
> Dr. Antonio López Almirall
>


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