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Postflood Recolonization Pathways of Macroinvertebrates in a Lowland Sonoran Desert Stream
Lawrence J. Gray and Stuart G. Fisher
The American Midland Naturalist
Vol. 106, No. 2 (Oct., 1981), pp. 249-257
Published by: The University of Notre Dame
Stable URL: http://www.jstor.org/stable/2425161
Page Count: 9
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Most macroinvertebrate taxa recolonizing after floods in Sycamore Creek did so via aerial pathways. After frequent winter flooding, most aerial colonists were aquatic adults (Coleoptera and Hemiptera), whereas ovipositing adults (Ephemeroptera and Diptera) dominated after summer flooding. Drift and upstream movements by relatively few taxa contributed most individuals after floods. Upstream movements were greater during high discharge than during low discharge periods. Few taxa and individuals were present in sediments below 10 cm.
The American Midland Naturalist © 1981 The University of Notre Dame