trophogenic

trophogenic

[¦träf·ə¦jen·ik]
(ecology)
Originating from nutritional differences rather than resulting from genetic determinants, such as various castes of social insects.
Mentioned in ?
References in periodicals archive ?
Samples were collected at 6 m (MCM1 and MCM7) and 9 m (MCM2 and MCM8) in Lake Fryxell and 13 m (MCM3 and MCM5) and 18 m (MCM4 and MCM6) in Lake WLB to capture the microbiology of distinct vertical physicochemical and biogeochemical layers within the trophogenic zone (region where adequate light exists to support phytoplankton photosynthesis) of the two lakes.
Nevertheless, lakes situated in mountainous regions may well be subject to fluctuating local microclimates and weather conditions, introducing extremes of cloud and precipitation, including snow, that leave habitats as vulnerable to short-term variability in irradiance, nocturnal cooling, mixed depth and light availability, as they do in the trophogenic layers of lakes at higher latitudes.
The uniformly warm, circulating, and fairly turbulent upper layer corresponding to the trophogenic zone forms the epilimnion.