Assertion: kangaroo rat | /r/HasProperty | characterized as keystone ecosystem engineers
Facets:
value: for their role
type: CAUSE
value: frequently
type: TEMPORAL
Source sentences:
text: Kangaroo rats ( Dipodomys spp.) are frequently characterized as keystone ecosystem engineers for their role in altering soil characteristics, changing habitat structure through grazing and creating expansive burrow networks that are used by many other species ( Hawkins & Nicoletto 1992 ; Fields, Coffin & Gosz 1999 ).