Complex sentence: Mathias Kondolf, fluvial geomorphologist at the University of California, Berkeley describes Rosgen's methods as "pseudo-science" and says they are popular with government agencies across the country because they are simplistic and easy to apply.
Split into simpler sentences: Mathias Kondolf, fluvial geomorphologist at the University of California, Berkeley. Kondolf describes Rosgen's methods as "pseudo-science" and says they are popular with government agencies across the country because they are simplistic and easy to apply.