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Effects of deposit-feeding bivalve (Macomona liliana) density on intertidal sediment stability

Abstract
Effects of macrofaunal feeding and bioturbation on intertidal sediment stability (u*crit) were investigated by manipulating density (0-3 x ambient) of the facultative deposit-feeding wedge shell (Macomona liliana) on the Tuapiro sandflat in Tauranga Harbour, New Zealand. Sediment stability increased up to 200% with decreasing M. liliana density and this was correlated with greater sediment microalgal biomass and mucilage content. The change in stability occurred despite homogeneity of grain size amongst experimental treatments, highlighting the importance of macrofaunal-microbial relationships in determining estuarine sediment erodibility.
Type
Journal Article
Type of thesis
Series
Citation
Lelieveld, S.D., Pilditch, C.A., & Green, M.O. (2004). Effects of deposit-feeding bivalve (Macomona liliana) density on intertidal sediment stability. New Zealand Journal of Marine and Freshwater Research. 38(1), 115-128.
Date
2004-03-01
Publisher
The Royal Society of New Zealand
Degree
Supervisors
Rights
The final, definitive version of this article has been published in the Journal, New Zealand Journal of Marine and Freshwater Research, 38(1), (2004), (c) Royal Society of New Zealand at the Royal Society of New Zealand Journals Online webpages.