Premium
Simultaneous patterns of temperature, oxygen, zooplankton and fish distribution in Lake Kinneret, Israel
Author(s) -
KALIKHMAN I.,
WALLINE P.,
GOPHEN M.
Publication year - 1992
Publication title -
freshwater biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 156
eISSN - 1365-2427
pISSN - 0046-5070
DOI - 10.1111/j.1365-2427.1992.tb00592.x
Subject(s) - zooplankton , transect , predation , fish <actinopterygii> , environmental science , fishery , abundance (ecology) , population density , oceanography , population , population dynamics of fisheries , ecology , biology , geology , demography , sociology
SUMMARY 1. Temperature, oxygen concentration and zooplankton density were measured simultaneously on 25 December 1990 at twenty‐six stations during an acoustic survey of the fish population of Lake Kinneret, Israel. Data from a preliminary acoustic survey were used to establish the optimal distance between transects (4km). 2. The distribution of temperature and oxygen concentration (and their gradients), and zooplankton and fish densities were compared using three‐dimensional plots and correlation analysis. Both fish and zooplankton were concentrated in frontal zones where temperature and oxygen gradients were highest. 3. In the south‐eastern part of the lake, where fish abundance was highest, a minimum of zooplankton density was observed, suggesting that predation by fish reduced zooplankton concentrations.