It may not be apparent to the casual observer, or even to the novice fly fisherman, but beneath the stark beauty of a tumbling trout stream there lives a complex, thriving community of life. This community of microscopic organisms, aquatic insects, and fishes, is quite intricate. Each form of life, from the tiniest to the largest, is interlinked and dependent upon the other for survival. Scientists call these communities ecosystems, food chains, or food webs. &nb...
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