There are three basic types of freshwater ecosystems: 1  Lentic: slow moving water, including pools, ponds, and lakes. 2  Lotic: faster moving water, for example streams and rivers. 3  Wetlands: areas where the soil is saturated or inundated for at least part of the time.
Pediatricians earn an average hourly wage of $95.10. Pediatricians earn an average salary of $197,800 per year.
As of 2015, the Bureau of Labor Statistics shows that the average annual salary of a pediatrician is $170,530, which equates to about $81.98 per hour. Pediatricians who specialize in a certain field of practice make an average of $184,410 per year.