Definition: Deriving energy from light sources. In practice, taxa containing plastids and photosynthetic pigments, but with no evidence for consumption of organic particles or prey, are considered to be photoautotrophic. (Barton, AD, Finkel, ZV, Ward, BA, Johns, DG, Follows, MJ. 2013. On the roles of cell size and trophic strategy in North Atlantic diatom and dinoflagellate communities. Limnol. Oceanogr., 58(1), 2013, 254–266. doi:10.4319/lo.2013.58.1.0254)
Definition: A habitat that is in or on a body of water (as in estuaries) containing medium concentrations of dissolved salts and other total dissolved solids (typically 0.5 to 35 grams dissolved salts per litre).