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Eastern Pacific Barrier: Exchange Area? (Part 2)
We have always thought of the barrier as a real present, visible obstacle, which stands vertically and which does not allow us to overcome it, except through possible adaptations. Today, however, we have understood that in reality long distances and very deep waters are equally an insurmountable barrier for marine inhabitants. Man has built railways,…
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Eastern Pacific Barrier: Exchange Area? (Part 1)
“Westward of the shores of America, a wide space of open ocean extends, with not an island as a halting-place for emigrants; here we have a barrier of another kind, and as soon as this is passed we meet in the eastern islands of the Pacific with another and totally distinct fauna”.
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The Barrier Between Atlantic & Pacific: The Speciation Process Of Ophioblennius spp.
We are facing 2 species which, thanks to 7 million years of evolution, could have become independent of each other. But will it really be so? Because we must consider that the biological concept of species is not verifiable under allopatric conditions (species that occupy completely separate areas). If these 2 species find themselves coexisting…
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Mid-Atlantic Ridge: Biodiversity Around Seamounts
These conical shaped underwater mountains are characterised by accelerating currents that enhance the flux of prey organisms flowing over them.
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Mid-Atlantic Ridge: The Rise Of The Azores Archipelago
One of the many MAR’s possible heredities that can be visited nowadays is the Azores archipelago.
Entire.
starts from the Ocean
Entire. 