The Anoxic Factor, a Quantitative Measure of Anoxia and Fish Species Richness in Central Ontario Lakes

Modeling the effect of development on internal phosphorus load in nutrient‐poor lakes

“…Only because they have not been subjected to large amounts of external loading are their sediments very low in releasable P forms and hence sustain low RRs. Once loading increases, especially that of highly available P from anthropogenic sources, sediment P will also increase and be released for extended periods and areas during the summer and possibly under ice, since winter anoxia is widespread in these lakes as well [Nürnberg, 1995b]. Because these lakes are so low in P content right now, even small increases in concentration may drastically alter algae distribution and abundance and ultimately adversely affect the food chain including zooplankton and fish, leading to a perceptible decrease in water quality.…”

Newman Lake restoration: A case study Part III. Hypolimnetic oxygenation

“…Typical meso-to eutrophic temperate zone lakes, with periods of summer hypolimnetic DO depletion, display AF values from about 30 to 70 days (Nürnberg 1995a(Nürnberg , 1995b. Of particular significance is the fact that AF has been shown to correlate well with independent measures of internal phosphorus load for a wide range of lakes (Nürnberg 1995a, 1998, Nürnberg and LaZerte 2001.…”

“…This turbid transition layer from open water to sediments is somewhat analogous to benthic nepheloid layers described in marine literature. Within a few years of (Nürnberg 1995a and1995b). All years for which sufficient data are available are included.…”

Full Issue PDF, Volume 41, Issue 6

“…Water quality strongly influences fish assemblages in lakes (Nürnberg 1995;Jeppesen et al 2000;Drake and Pereira 2002), and fish-based measures have been useful for understanding the effects of eutrophication (Larkin and Northcote 1969;Lee et al 1991;Launois et al 2011). Watershed/water quality effects on fish communities are frequently significant even when physical habitat effects are not (Jennings et al 1999;Mehner et al 2005;Søndergaard and Jeppesen 2007).…”