temps (durée) (1) stratification (1) sédiment (1) phytoplancton (1) limnologie (1) éboulement (1) lac (1) histoire de l'écologie (1) documentation (1) matière organique (1) profession (1) Documentation (1) Observations (1) Observations (1) Origin (1) Watersheds (1) Water chemistry (1) Water (1) Values (1) Time (1) Phytoplankton (1) Limnology (1) Limnologists (1) Landslides (1) Lakes (1) Lake sediments (1) Investigations (1) Documentation (1) Climatic changes (1) Carbon--Isotopes (1)