ISSN:
1600-0633
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
,
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract– Data from the Swedish Electrofishing Register were used to study the effects of lakes on the growth of yearling (0+) brown trout in outlet streams. It was found that growth increased close to lakes. On average, the length of the longest yearlings was 10% greater 0-100 m downstream from lakes as compared with more than 1 km downstream. Growth enhancement was most pronounced downstream from large lakes. This was exemplified with maximum yearling lengths in September in inlet streams (maximum yearlings 50-100 mm) and outlet streams (65-130 mm) of Lake Stora Le (area 200 km2), and inlet streams (50-75 mm) and outlet streams (65-95 mm) of Lake Anten (area 18 km2). It is suggested that this is a combined effect of both increased water temperature and outflow of lake seston. The growth pattern found was not correlated to population abundance or to the abundance of competitors or predators.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1600-0633.1996.tb00043.x
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