One row per distinct obs.life_stage value, with the Darwin Core label
(dwc_lifeStage) and the NERC S11 concept URI where one is exact, plus
life_stage_parent for a substage S11 does not carve (furcilia F1 ->
furcilia). Two values are recorded as not life stages — euphausiid
damaged and ichthyo invert — and carry neither a label nor a parent;
dwc_occurrence() sends those to occurrenceRemarks, never to lifeStage.
Value
A tibble, all columns character.