Zonation of the invertebrate fauna in a
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H. B. N. Hynes
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Article
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1971
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Springer
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English
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Samples of the invertebrate fauna collected at ten points on a mountain stream in Trinidad reveal that the fauna is altitudinally zoned and that the apparent boundary between rhithron and potamon is below 30 m . This is very much lower than has previously been reported in the tropics .