profundal |
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navigate by keyword : zonation lakes ponds educational zone levels labeled diagram outline description biology geology littoral limnetic photic benthic aphotic profundal depth level ecology ecosystem division classification water marine areas sections oligotrophic identification concept vector illustration scheme freshwater study limnology separation nearshore environment nature offshore pelagipelagic axis biological habitat lentic lotic shore |
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Zonation in lakes and ponds as educational freshwater levels outline diagram. Educational labeled scheme with photic, aphotic or littoral, limnetic zones as water depth measurement vector illustration |
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