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06-19-2012, 04:05 PM | #16 | |
Marcus Chua
Join Date: Nov 2003
Location: Carlsbad
Age: 49
Posts: 4,079
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Re: Tsunami sent invasive species to US West Coast
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There are a lot of physical barriers that kept most species in their geographic areas. Would there be drift from one area to the other? Sure but the amount was pretty small and the chances slim. Now adays where an invasive species can hop a ride on a ship or airplane we run into a whole different ballgame. Historical drift would usually give the original inhabitants a chance to evolve against the invasive species. Today that is much less likely. Take for example the grass carp from Asia. Since it is a freshwater species the chances it could have made it across the Pacific are slim to none. If it had the odds of a breeding pair making it are even more miniscule. Now take man, we bring them in to eat algae at fish farms and such. They escape, find a system devoid of any natural predators and start multiplying. This is the issue with invasive species all over the world.
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06-19-2012, 05:42 PM | #17 |
Me llamo Mike Candra
Join Date: Sep 2010
Location: el norte... hijueputa
Age: 45
Posts: 1,322
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Re: Tsunami sent invasive species to US West Coast
But it is still a natural process as everything done by a natural species is natural. If humans are part of the next great extinction there will be no one to tell those carb they are inthe wrong place.
Mike
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07-07-2012, 11:16 AM | #18 |
Registered User
Join Date: May 2012
Location: Hemet CA
Age: 36
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Re: Tsunami sent invasive species to US West Coast
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07-07-2012, 11:42 AM | #19 |
Registered User
Join Date: May 2005
Location: Stann Creek, Belize
Age: 68
Posts: 1,939
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Re: Tsunami sent invasive species to US West Coast
Fish and other marine species are believed to have populated the Pacific islands by hitch hiking on debris from the Indo Pacific. Flotsam floating across the Pacific to the west coast of the Americas happens, but less frequently than island hopping through the Pacific island chains.
The open water between the Marquesas, the Hawaiian Islands to the Americas is referred to by ichthyologists as the East Pacific Barrier and this is why many fish species that occur in the indo Pacific, are not in the tropical Americas. It was along journey for them to survive. As KMoose said, it could have been a coconut log or some other flotsam. It happens. |
07-09-2012, 09:29 AM | #20 | |
Matt Head
Join Date: May 2006
Location: Graveyard of the Atlantic
Age: 46
Posts: 2,699
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Re: Tsunami sent invasive species to US West Coast
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