21. Many of the barriers to top-down trophic cascades also promote stability. 22. These include primary productivity ( production of trophic interactions. 23. One aspect of trophic levels is called tritrophic interaction. 24. Properly managed multi-trophic aquaculture accelerates growth without detrimental side-effects. 25. Currently, ecological networks that integrate non-trophic interactions are being built. 26. They are, in turn, central prey items for higher trophic levels. 27. Humans are also at the top of the trophic pyramid, particularly newborns. 28. Example : Assume 500 units of energy are produced by trophic level 1. 29. Large predator fish with higher trophic levels have been depleted in wild fisheries. 30. This augmented community matrix provided a probabilistic trophic network.
