Setting the Phosphorus Boundaries for Greek Natural Shallow and Deep Lakes for Water Framework Directive Compliance

Eutrophication caused by nutrient enrichment is a predominant stressor leading to lake degradation and, thus, the set-up of boundaries that support good ecological status, Water Framework Directive’s main target, necessity. Greece one Member States have recorded delays in complying with coherent management goals European legislation. A wide range different statistical approaches has been proposed Best Practice Guide for determining appropriate thresholds. To determine thresholds supporting status natural Greek lakes, phytoplankton dataset gathered from national monitoring programme (2015–2020) was used shallow and deep lakes. The regression analyses were sufficient robust order derive total phosphorus ranged 20 41 ?g/L 15–32 types. Nutrient encompass stressors these lakes are subject to, essential proper design.