AUTHOR=Perdrial Julia , Sullivan Pamela L. , Dere Ashlee , West Nicole TITLE=Editorial: Critical Zone (CZ) Export to Streams as Indicator for CZ Structure and Function JOURNAL=Frontiers in Earth Science VOLUME=8 YEAR=2020 URL=https://www.frontiersin.org/journals/earth-science/articles/10.3389/feart.2020.00037 DOI=10.3389/feart.2020.00037 ISSN=2296-6463