That's a very interesting take on the whole thing.
What are these "langostas" that you are talking about? Do you know of them by another name by chance?
I agree that 2011 and 2012 summers were quite dry. Have you been in the area this year? We had a VERY wet summer...so many varieties of grasses came up with just as many varieties of "weeds". So far, this winter seems to be going pretty well also. I do know of many wells drying up in the area but I feel that is all the more reason to work on water harvesting methods, spreading the word and showing the results to folks that are skeptical. Do you feel that these things naturally flow in rhythms...dry/"normal"/wet?
various ecological measures regularly enacted by those farmers which had an impact on the entire area which are now ignored
Could you give some examples of these?