oligotrophic

/OW0 L IH0 G AH0 T R OW1 F IH0 K/
adjective
  1. 1

    (of a diet) deficient in nutrition (providing little nourishment)

  2. 2

    (of a wetland) deficient in plant nutrients, such as nitrogen or phosphorus.

    โ€œ1969 July, Fred W. Rabe and Robert C. Wissmar, โ€œSome Effects of Antimycin in an Oligotrophic Lakeโ€ in The Progressive Fish-Culturist, volume XXXI, โ„– 3, page 163โ€

Source: https://en.wiktionary.org/wiki/oligotrophic