... EPA 841-D-9 7-0 02,1997. Barlocher, R. and Kendrick, L., "Leaf conditioning by microorganisms." Oecologia 20: 35 9-3 62, 1975. Banyman, A. A., Population Systems: A General Introduction. ... stream& apos;s flora and fauna in a balanced state. Nature balances stream life by maintaining the number and the types of species present in any one part of the stream. Na- ture structures the stream ... L., "Population synchrony in mayflies: A predator satiation hypoth- esis." Evolution, 36, 81 0-8 21, 1982. Tansley, A. G., "The use and abuse of vegetational concepts and...