![]() NPS Photo by N. Herbert ![]() Cryptogamic crusts retard erosion by wind and water, help retain soil moisture during dry periods, slow evaporation rates, and enhance seedling establishment. These living crusts are extremely fragile and one footprint can set back development for decades. For more information on Biological Soil Crusts visit this USGS Soilcrust website. |
Last updated: February 24, 2015