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The Green Sahara, A Desert In Bloom
Science News, ScienceDaily ^
| September 30, 2008
| Christian-Albrechts-Universitaet zu Kiel
Posted on 10/03/2008 11:55:57 AM PDT by SunkenCiv
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| GGG managers are SunkenCiv, StayAt HomeMother & Ernest_at_the_Beach |
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Just updating the GGG info, not sending a general distribution.
Evolution in Your Face
by Patrick Huyghe
Omni Lake Victoria, Africa's largest lake, is home to more than 300 species of cichlids. These fish, which are popular in aquariums, are deep-bodied and have one nostril, rather than the usual two, on each side of the head. Seismic profiles and cores of the lake taken by a team headed by Thomas C. Johnson of the University of Minnesota, reveal that the lake dried up completely about 12,400 years ago. This means that the rate of speciation of cichlid fishes has been extremely rapid: something on average of one new species every 40 years! 12,400 years ago? Hydrologic cycle came to a screeching whoa for some reason, hmm, what could it have been?
To all -- please ping me to other topics which are appropriate for the GGG list. |
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41
posted on
09/21/2012 5:14:34 PM PDT
by
SunkenCiv
(https://secure.freerepublic.com/donate/)
42
posted on
02/08/2014 11:54:00 AM PST
by
SunkenCiv
(http://www.freerepublic.com/~mestamachine/)
Evolution in Your Face
by Patrick Huyghe
Omni
Lake Victoria, Africa's largest lake, is home to more than 300 species of cichlids. These fish, which are popular in aquariums, are deep-bodied and have one nostril, rather than the usual two, on each side of the head. Seismic profiles and cores of the lake taken by a team headed by Thomas C. Johnson of the University of Minnesota, reveal that the lake dried up completely about 12,400 years ago. This means that the rate of speciation of cichlid fishes has been extremely rapid: something on average of one new species every 40 years!
43
posted on
02/08/2014 11:55:11 AM PST
by
SunkenCiv
(http://www.freerepublic.com/~mestamachine/)
44
posted on
02/08/2014 12:05:18 PM PST
by
SunkenCiv
(http://www.freerepublic.com/~mestamachine/)
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