Anonymous ID: 637e0d Jan. 20, 2019, 11:29 a.m. No.4836508   🗄️.is 🔗kun

>>4836298

>sharp population decline

Many, if not most of the seasonal water sources of shallow ponds, playa, and playette's were "dug out" to form short lived ponds for livestock across the public lands of the intermountain west. This contributed to the crash of waterfowl populations in the nesting grounds of the Canadian arctic in the '70's but was not correlated to the "de-watering" of the seasonal impoundments.

Because the majority of the areas in question had not had an ecological site inventory or soil survey, the fact that the seasonal impoundments were the result of a shallow clay (argillic) layer. When the "dug outs" were created, it violated the impermeable clay layer and resulted in extremely short duration and extent of ponding.

This is a reversible man made catastrophe that has effected wildlife, hydrologic cycles, migratory birds and insects.