A Quadrat-Sieve System for Sampling Freshwater Mussels Using SCUBA

Donald F. McAlpine; Mary C. Sollows

doi:10.1656/045.021.0108

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Donald F. McAlpine,^1,2,* Mary C. Sollows^1,2,3

¹1New Brunswick Museum, 277 Douglas Avenue, Saint John, NB, Canada E2K 1E5.
²2Department of Biology University of New Brunswick, Saint John, NB, Canada E2L 4L5.
³3Canadian Rivers Institute, c/o University of New Brunswick, Saint John, NB, Canada E2L 4L5.

^*Corresponding author - Donald.mcalpine@nbm-mnb.ca.

Abstract

We describe a simple combined-quadrat-sieve system, suitable for in-river surveys of unionoid populations where SCUBA is required. The apparatus has allowed us to survey and excavate 0.25-m² quadrats with mean search times of <7 min quadrat^-1 over 4-hour dives. We have successfully detected mussels near the minimum size, more often retrieved by sieving at the surface, while minimizing habitat disturbance.

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Donald F. McAlpine and Mary C. Sollows "A Quadrat-Sieve System for Sampling Freshwater Mussels Using SCUBA," Northeastern Naturalist 21(1), (1 March 2014). https://doi.org/10.1656/045.021.0108

Published: 1 March 2014

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