Drinking water quality is directly dependent on the health of forests growing on the watershed, according to a paper published in the journal Nature Climate Change.
Staff of the University of Natural Resources Colorado (Colorado School of Mines) concluded that the deterioration of water quality in Colorado and Wyoming (USA) due to loss of forest in the state of the epidemic pests.
After an unusually warm winter, more than four million acres (16,000 square kilometers) of pine forests in these states have been destroyed by pests — beetles beetle (Dendroctonus ponderosae). These parasites are resistant to the pine forests of the toxins present in the resin, which is isolated trees to control pests.
The death of the forest, as the authors explain, has led to a change in the groundwater regime. Located close to the surface aquifers, not claimed by root systems of trees can dry out "as unnecessary" — a reference to the well from which no longer take water.
Scientists paid attention to the deterioration of water quality, which has acquired an unpleasant color and odor due to the amount of organic matter that has fallen into aquifers at rotting trees. Organic residues fall into the water with the rains.
Scientists confirmed their findings during field issledovaniyay: selecting a series of samples, they noted the high content of dissolved organic matter in the aquifer in the very areas where forests have died from beetle attack.
Water from these horizons after getting into organics, require more complex and expensive treatment before becoming unfit for consumption.