How are coastal benthos fed?: How are benthos fed?

Citation data:

Limnology and Oceanography Letters, ISSN: 2378-2242, Vol: 2, Issue: 1, Page: 18-28

Publication Year:
2017
Usage 41
Abstract Views 25
Downloads 16
Captures 7
Readers 7
Social Media 14
Tweets 14
Citations 7
Citation Indexes 7
Repository URL:
https://dc.uwm.edu/freshwater_facarticles/1
DOI:
10.1002/lol2.10033; 10.1002/lol2.10033. this article may be used for non-commercial purposes in accordance with wiley terms and conditions for self-archiving
Author(s):
James T. Waples; Harvey A. Bootsma; J. Val Klump
Publisher(s):
Wiley
Tags:
Fresh Water Studies
Most Recent Tweet View All Tweets
article description
Water movement can influence the distribution of benthos, in part, by increasing food delivery; however, the impact of advective transport and turbulent diffusion on organic matter flux to nearshore benthic communities is not well quantified. In this study, we measured the vertical particulate organic carbon (POC) and particulate phosphorus (PP) flux in nearshore Lake Michigan using two naturally occurring daughter/parent radionuclide pairs (234Th/238U and 90Y/90Sr) and compared these fluxes to coincident benthic chamber estimates of respiration and total phosphorus efflux by quagga mussels on the lakebed. We found that advective onshore transport and vertical convective mixing increased POC and PP flux to the nearshore benthos by a factor of ~15 and ~30 over offshore trap-derived estimates of flux. From these results, we hypothesize that high benthos population densities are related to an edge effect created when the dominant mechanism of particle delivery transitions from gravitational settling to convection.