Lake Responses to Reduced Nutrient Loading? An Analysis of Contemporary Long-term Data from 35 Case Studies

Abstract

This synthesis examines 35 long-term (5-35 years, mean: 16 years) lake reoligotrophication studies. It covers lakes ranging from shallow (mean depth <5 m and/or polymictic) to deep (mean depth up to 177 m), oligotrophic to hypertrophic (summer mean total phosphorus concentration from 7.5 to 3500 lg L)1 before loading reduction), subtropical to temperate (latitude: 28-65), and lowland to upland (altitude: 0-481 m). Shallow northtemperate lakes were most abundant.