Folder Water Chemistry

pdf MTU_LCWC Water Chemistry Poster - 2014

Impact of Nutrient Loading and Eurasian Watermilfoil on Phytoplankton Communities Among Channels of the Les Cheneaux Islands, Lake Huron

Authors: Jade E. Ortiz1 , Amy M. Marcarelli1 , Gary L. Fahnenstiel1 , Rob A. Smith2

Author Affiliation: 1 Michigan Technological University, 2Les Cheneaux Watershed Council

Journal: Unpublished; Cooperative Project between LCWC & MTU; 2014

Abstract: Water quality is a concern in channels of the Les Cheneaux Islands, but little is known about phytoplankton communities, which form the base of the pelagic food web.

This report provides a basis for understanding primary producer responses to nutrient loading and Eurasian watermilfoil (Myriophyllum spicatum) management efforts in the waterways of the Les Cheneaux Islands.

pdf Phosphorus and Phytoplankton Dynamics in the Les Cheneaux Islands

Phosphorus and Phytoplankton Dynamics in the Les Cheneaux Islands during a Rapid Rise in Lake Huron Water Level

Authors: R.A. Smith

Author Affiliation: LCWC

Journal: LCWC Report; April 2016

Abstract: The LCWC studies nutrients in the water, primarily phosphorus, and the density of free-floating algae, phytoplankton, to get an idea of what the season’s weed growth might be like. Rooted aquatic weeds like Eurasian watermilfoil get most of their nutrients from the bottom sediments and algae get their nutrient directly from the water.

From 2013 to the end of 2015 we experienced a 37 inch rise in lake levels. An unprecedented lake rise for a two year period, that resulted in a 30% dilution rate. What effect does that amount of dilution have on the weed growth, phytoplankton growth and availability of nutrients? That is what this paper addresses.

pdf Trophic History of the Les Cheneaux Waters, 2001-2012

Trophic History of Les Cheneaux Waters: 2001-2012

Authors: R. A. Smith

Author Affiliation: LCWC

Journal: LCWC Report; January 13, 2013

Abstract: Factors that contribute to the growth of aquatic plants and affect recreational water quality have been studied by the Les Cheneaux Watershed Council and the Les Cheneaux Islands Association since 2001. During this survey period the recreational water quality has been classified as excellent according to limnology, or water scientist, criteria. The trophic state, or the potential of nutrients to support algal or plankton biomass, has remained essentially the same between 2001 and 2012.