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.
June 2015 figures from PayScale.com reveal that the median salary for pediatricians who have 5 years of experience or less is $132,000. For those with 5 to 10 years of experience, it is roughly $145,000. Those with 10 to 20 years earn $150,000 and those with more than 20 years of experience earn about $163,000.