About: http://webisa.webdatacommons.org/203104563

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Common mergansers are considered keystone predators, acting to control the populations of many inland fish such as perch and bass.
http://www.w3.org/ns/prov#wasQuotedFrom	umich.edu