This is considerably simplified, because there can be considerable crossover. A. A more realistic Food Web is shown in Figure 12.4. Note that even this is simplified, because the top predator shown is only the herring, which is of course preyed upon by many other organisms. Below that, enough light is not present for the plant to produce biomass, although the plant can still live. Temperature - Chemical reaction rates are a function of molecular vibration rates and therefore of temperature.
Tropical fish move faster, grow and reproduce faster.
Cold water fish live longer, grow bigger. Endotherms - can often tolerate larger external temperature changes, but much smaller internal temp. Sometimes the reasons are not yet known. S, Na, Mn, Zn, Co, as well as all of the nutrients listed for humans. Thus we can predict that if PO 4 -3 concentrations in deep water increase due to bacterial decay of organic matter by a certain amount, then the nitrate concentration will increase by 16 times that amount, and that carbon dioxide concentrations will increase by 108 times that amount.