Limnological Conditions in Ice‐Covered Lakes, Especially as Related to Winter‐Kill of Fish

Greenbank, John

doi:10.2307/1948427

Cited by 167 publications

(133 citation statements)

References 39 publications

(72 reference statements)

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“…On the other hand in May of 1998 and in May of 1999 we probably observed the effects of two «winter fish kills». In ice covered eutrophic shallow lakes heavy fish kills occur as consequence of the decomposition of organic matter accumulated in the bottom which in turn deplete oxygen in the water (Greenbank 1945).…”

Section: Discussionmentioning

confidence: 99%

Limnological aspects of an Apennine shallow lake

Ruggiero

Solimini²,

Carchini

2004

Ann. Limnol. - Int. J. Lim.

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We present the results of a four-years monitoring program of Lake Duchessa, a small shallow subalpine lake situated at 1788 m a.s.l. in central Apennines (Italy). From 1997 to 2000, during snow free periods, we regularly measured conductivity, pH, macrophyte cover and water transparency. Contemporarily, 4 water samples were collected to determine nutrient (NH 3 -N, NO 2 -N, NO 3 -N and PO 4 -P) and phytoplanktonic chlorophyll a concentrations. Taxonomic compositions of aquatic macrophytes, zooplankton and macroinvertebrates were also determined. Inter-and intra-annual variation of water chemistry and phytoplankton biomass were addressed. Lake Duchessa showed some limnological aspects proper to lowland eutrophic situations due to livestock grazing in the watershed pastures and watering in the lake. In particular, nutrient concentration and phytoplankton biomass reached extremely high values, and lake community was relatively poor. However, despite the high nutrient loading, phytoplankton biomass collapsed in August 1997. In the same occasion, lake water became transparent and remained clear until the end of 1999. The occurrence of this clear water phase and its surprising span may be related to the reduction of tench population (due to a natural fish kill observed during the study) and to the extension of Potamogeton pectinatus L. and Myriophyllum spicatum L. cover. Our results support early observations that water transparency (i.e. environmental quality) of eutrophic shallow lakes can be improved also when nutrient loading is not reduced. Many of the Apennine lakes and ponds situated at high altitudes show conditions similar to those of Lake Duchessa. Therefore this study highlights the ecological processes to be considered in a reliable management of these freshwater systems.

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Section: Discussionmentioning

confidence: 99%

Limnological aspects of an Apennine shallow lake

Ruggiero

Solimini²,

Carchini

2004

Ann. Limnol. - Int. J. Lim.

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“…We summarized the data to describe winter severity because colder, longer winters with greater snowfall have led to higher probabilities of winterkill [33,34]. The cumulative number of days when the minimum daily temperature was ≤ 0 o C (facilitating ice formation) over the entire winter period (from fall cooling to spring warming period …”

Section: Study Areamentioning

confidence: 99%

Overwinter Mortality of Sympatric Juvenile Bluegill and Yellow Perch in Mid-Temperate Sandhill lakes, Nebraska, U.S.A

Jolley¹,

Kaemingk

Willis³

et al. 2013

TOFISHSJ

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Substantial mortality can occur in age-0 fish populations during their first year of life, especially in winter; this can potentially influence overall recruitment into the adult population. As such, we compared relative abundances between fall and spring catches of sympatric juvenile bluegill Lepomis macrochirus Rafinesque and yellow perch Perca flavescens (Mitchill) to evaluate the magnitude of overwinter mortality across locations (five lakes for two years) and through time (one lake for six years). In addition, we compared both quantile-quantile and increment plots, based on length-frequency histograms from fall-and spring-caught cohorts from 2004 to 2010, to determine if mortality was sizeselective while accounting for over winter growth. Bluegill relative abundances (as indexed by catch-per-unit-effort) significantly decreased from fall to spring, although size-selective mortality was not detected in 10 instances. Yellow perch relative abundances were similar from fall to spring in five Nebraska Sandhill lakes; however, size-selective mortality was detected, with size-selective over winter mortality of smaller individuals occurring in one of eight instances, whereas greater mortality in larger individuals occurred in two instances. Positive growth occurred in both species but was variable among lakes and appeared to be system-specific. In Nebraska Sandhill lakes, over winter mortality likely differs between these two species in its severity, size-selective effect, and scale (i.e., lake-specific vs. large-scale processes), and is likely influenced by combinations of these (and potentially other) factors.

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“…Changes in ice cover are of critical ecological importance for lakes because of their effect on the underwater light levels (Leppäranta et al, 2003), nutrient recycling (Järvinen et al, 2002) and oxygen conditions (Stewart, 1976;Livingstone, 1993), which influence the production and biodiversity of phytoplankton (Rodhe, 1955;Phillips and Fawley, 2002;Weyhenmeyer et al, 1999), and the occurrence of winter fish kills (Greenbank, 1945; Barica and…”

Section: Relevancementioning

confidence: 99%