There are several examples where habitat alteration is believed to be responsible for an increased frequency of hybridization.



However, civilization can also have the opposite effect, for example when you build a giant city right where two or more types ecosystems merge. San Antonio, Texas, Saltillo MX, and Monterey MX are three examples. These cities are so large and impassable that they can (obviously) restrict corridors of natural gene flow.
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Herp Conservation Unlimited

Conservation through captive propagation

Mexicana Group Directory

Photography by Joseph E. Forks

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• Hybreds ? - peters, Mon May 10 19:55:14 2010
• RE: Hybreds ? - Bluerosy, Mon May 10 20:08:55 2010
• RE: Hybreds ? - a153fish, Mon May 10 20:26:31 2010
• RE: Hybreds ? - Bluerosy, Mon May 10 20:43:31 2010
• i did not know that - a153fish, Mon May 10 21:07:32 2010
• RE: i did not know that - jlassiter, Mon May 10 21:24:30 2010
• RE: i did not know that - Joe Forks, Mon May 10 21:25:52 2010
• RE: i did not know that - jlassiter, Mon May 10 21:29:36 2010
• RE: i did not know that - jlassiter, Mon May 10 21:31:17 2010
• I have not posted that photo yet.... - Joe Forks, Mon May 10 21:35:19 2010
• RE: I have not posted that photo yet.... - jlassiter, Mon May 10 21:38:18 2010
• oh I know which one you mean.... - Joe Forks, Mon May 10 21:39:10 2010
• RE: oh I know which one you mean.... - jlassiter, Mon May 10 21:40:51 2010
• UANL 5018 - Joe Forks, Mon May 10 21:42:41 2010
• RE: i did not know that - lirepman76, Tue May 11 05:10:59 2010
• RE: i did not know that - Joe Forks, Tue May 11 08:13:59 2010
• RE: Hybreds ? - peters, Mon May 10 21:15:34 2010
• RE: Hybreds ? - FR, Tue May 11 11:19:28 2010
• RE: Hybreds ? - peters, Tue May 11 13:38:12 2010
• RE: Hybreds ? - Tony D, Tue May 11 15:39:52 2010
• RE: Hybreds ? - ChrisErica, Tue May 11 05:46:27 2010
• RE: Hybreds ? - Joe Forks, Mon May 10 20:55:30 2010
• RE: Hybreds ? - peters, Mon May 10 22:18:42 2010
• Western Zoological Supply - Bluerosy, Mon May 10 23:00:43 2010
• RE: Western Zoological Supply - peters, Mon May 10 23:43:30 2010
• RE: Western Zoological Supply - Bluerosy, Tue May 11 00:24:40 2010
• Really? - foxturtle, Tue May 11 00:30:02 2010
• RE: Really? - a153fish, Tue May 11 07:21:49 2010
• Those are just corns... - foxturtle, Tue May 11 11:26:26 2010
• I agree - a153fish, Thu May 13 10:28:13 2010
• RE: Really? - FR, Tue May 11 11:30:38 2010
• My Hats off to you FRANK!!!!1 - BobS, Tue May 11 11:57:38 2010
• RE: My Hats off to you FRANK!!!!1 - Shalomjeru, Tue May 11 13:24:52 2010
• RE: My Hats off to you FRANK!!!!1 - Shalomjeru, Tue May 11 13:54:45 2010
• RE: My Hats off to you FRANK!!!!1 - FR, Tue May 11 14:05:01 2010
• RE: My Hats off to you FRANK!!!!1 - Shalomjeru, Tue May 11 21:43:15 2010
• RE: My Hats off to you FRANK!!!!1 - JKruse, Tue May 11 22:11:59 2010
• RE: My Hats off to you FRANK!!!!1 - peters, Wed May 12 01:54:14 2010
• RE: My Hats off to you FRANK!!!!1 - Joe Forks, Wed May 12 07:28:33 2010
• RE: My Hats off to you FRANK!!!!1 - BobS, Tue May 11 14:08:37 2010
• RE: My Hats off to you FRANK!!!!1 - Bluerosy, Tue May 11 14:17:49 2010
• This is true - a153fish, Wed May 12 22:12:08 2010
• RE: Hybreds ? - a153fish, Tue May 11 07:15:25 2010
• RE: Hybreds ? - Joe Forks, Tue May 11 07:59:46 2010
• RE: Hybreds ? - a153fish, Wed May 12 22:02:44 2010
• RE: Hybreds ? - Joe Forks, Thu May 13 10:46:40 2010
• RE: Hybreds ? - a153fish, Thu May 13 15:20:13 2010
• RE: Hybreds ? - Joe Forks, Fri May 14 08:47:45 2010
• That's not my definition - a153fish, Fri May 14 10:32:20 2010
• RE: Hybreds ? - a153fish, Fri May 14 10:46:29 2010
• RE: Hybreds ? - Joe Forks, Fri May 14 11:02:58 2010
• by the way..... - Joe Forks, Fri May 14 11:10:05 2010
• RE: by the way..... - a153fish, Fri May 14 14:04:54 2010
• RE: Hybreds ? - Bluerosy, Tue May 11 11:26:57 2010
• RE: Hybreds ? - a153fish, Wed May 12 21:57:05 2010
• RE: Hybreds ? - varanid, Tue May 11 12:25:40 2010
• RE: Hybreds ? - JKruse, Tue May 11 13:33:01 2010
• RE: Hybreds ? - Joe Forks, Tue May 11 14:29:16 2010
• thanks for that....... - JKruse, Tue May 11 16:07:32 2010
• RE: thanks for that....... - Joe Forks, Tue May 11 18:24:32 2010
• RE: Hybreds ? - FR, Wed May 12 10:36:30 2010
• Awesome...... - JKruse, Wed May 12 11:13:54 2010
• AWESOME...........*ahem*................ - JKruse, Wed May 12 14:56:55 2010
• RE: Awesome...... - FR, Wed May 12 18:38:08 2010