Contents
EXERCISE 25
Diurnal Changes in Lake Systems
EXERCISE 26
Special Lake Types
EXERCISE 27
Historical Records of Changes in the Productivity of Lakes
EXERCISE 28
Effect of Sewage Outfall on a Stream Ecosystem
EXERCISE 29
Estimates of Whole Lake Metabolism:
Hypolimnetic Oxygen Deficits and Carbon Dioxide Accumulation
ApPENDIX 1
General Chemical Relationships
ApPENDIX 2
Basic Definitions Used in Community Analyses
ApPENDIX 3
Useful Relationships Relative to the Use of Colorimeters and
Spectrophotometers
ApPENDIX 4
Characteristics and Taxonomic Sources of Common Freshwater
Organisms
Index
xiii
325
. . 331
337
345
349
359
365
371
373
387