About: http://webisa.webdatacommons.org/128690885

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	We define this layer by the depths where both oxygen and sulfide concentrations are less than 1 ??M and, if oxygen is detectable, where there is a lack of a visible vertical gradient.
http://www.w3.org/ns/prov#wasQuotedFrom	scielo.cl