noun Ecology.
the state of being oligotrophic.

1700–10; oligo- + -trophy

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World English Dictionary
oligotrophic (ˌɒlɪɡəʊˈtrɒfɪk)
Compare eutrophic (of lakes and similar habitats) poor in nutrients and plant life and rich in oxygen
[C20: from oligo- + Greek trophein to nourish + -ic]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
Secchi readings and chlorophyll levels indicated oligotrophy.
Trophic status is generally viewed as a continuum extending from oligotrophy to eutrophy with no interim breakpoints.
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