Assertion: lipid's acid | /r/ObjectUse | used as biomarker
Facets:
value: often
type: TEMPORAL
value: broadly
type: DEGREE
Source sentences:
text: Fatty acids have often been broadly used as biomarkers in trophic transfer studies in aquatic food webs (e.g., [96–98]) and now they are being increasingly used for analysing terrestrial food webs as well .