About: http://webisa.webdatacommons.org/338400745

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	The exact reason for the decline remains unknown, though experts have named some likely culprits, including climate change, parasites, disease, predators and nutrition.
http://www.w3.org/ns/prov#wasQuotedFrom	phys.org