Complex sentence: Due to the large number of species in the genus Chrysosporium and their marked similarities, delineation of species and the assignment to taxonomic families can become difficult as a result scientist are continually studying not only new isolates but also those previously described.
Split into simpler sentences: Due to the large number of species in the genus Chrysosporium and their marked similarities, delineation of species and the assignment to taxonomic families can become difficult. As a result of this, scientist are constantly studying not only new isolates but also those previously described.