Low-density particles as potential nitrogenous foods for benthos

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ID: 294734
1993
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Abstract
The demonstrated bias of both macrobenthos and fluids to mobilize low-density particles leads to their potential importance as nutritional materials in benthic systems.We fractionated sediments from three coastal regions into low-and high-density separates, and examined both their organic geochemical characteristics and effects on ingestion rates of a deposit feeder.The low-density separates were highly enriched in total organic matter relative to the high-density phases.Enzymatically hydrolyzable protein concentrations in low-density separates were as much as 57-fold higher than the corresponding high-density separates, though some samples from Puget Sound and the Mediterranean Sea showed no enrichment at all.Low-density phases without nutritional enrichments were usually composed of woody debris.In spite of the organic richness of the low-density phase, it makes up no more than a minor fraction of either total sedimentary organic matter or its nutritional component.Addition of anomalously high concentrations of low-density materials to sediments caused a depositfeeding spionid polychaete to reduce ingestion rates.
Reference Key
openalex_W2134194712 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Lawrence M. Mayer, Peter A. Jumars, Gary L. Taghon, Stephen A. Macko, Susan Trumbore
Journal journal of marine research
Year 1993
DOI
10.1357/0022240933223738
URL
https://doi.org/10.1357/0022240933223738
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