Translator Disclaimer
1 September 2009 Dreissenid Phosphorus Excretion Can Sustain C. glomerata Growth Along a Portion of Lake Ontario shoreline
Author Affiliations +
Abstract

One of the effects of the dreissenid invasion into the Laurentian Great Lakes appears to be a resurgence in the abundance of the nuisance alga Cladophora glomerata which experienced a marked decline following phosphorus abatement in the late 1970s and early 1980s. A subsidy of bioavailable phosphorus excreted by dreissenid mussels could be an important mechanism facilitating the growth of C. glomerata. To assess the importance of phosphorus released by mussels to C. glomerata growth in the nearshore, we conducted a survey of mussel distribution and abundance followed by in situ experiments designed to measure dreissenid phosphorus excretion rates. Average dreissenid mussel abundance in our study area was 3674 individuals/m2, with an average biomass of 52.2 g of shell free dry mass/m2. The mussels excreted bioavailable soluble reactive phosphorus at an average rate of 7.02 µg SRP/g shell free dry mass/hour, contributing about 11 t of soluble reactive phosphorus to our study area over the C. glomerata growing season. Dreissenids appear to be an important source of recycled bioavailable phosphorus to the nearshore, supplying more soluble reactive phosphorus to our study area than local watercourses and WWTPs, and more phosphorus than is required to sustain local C. glomerata growth.

© 2009 Elsevier Inc.
Ted Ozersky, Sairah Y. Malkin, David R. Barton, and Robert E. Hecky "Dreissenid Phosphorus Excretion Can Sustain C. glomerata Growth Along a Portion of Lake Ontario shoreline," Journal of Great Lakes Research 35(3), 321-328, (1 September 2009). https://doi.org/10.1016/j.jglr.2009.05.001
Received: 1 December 2008; Accepted: 1 May 2009; Published: 1 September 2009
JOURNAL ARTICLE
8 PAGES

This article is only available to subscribers.
It is not available for individual sale.
+ SAVE TO MY LIBRARY

SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top