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Comparison of two approaches used to calculate zooplankton mortality
Author(s) -
Polishchuk L. V.,
Ghilarov A. M.
Publication year - 1981
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1981.26.6.1162
Subject(s) - zooplankton , mortality rate , population , environmental science , statistics , distribution (mathematics) , ecology , econometrics , mathematics , demography , biology , sociology , mathematical analysis
Two different approaches were used to determine mortality of Diaphanosoma brachyurum collected in the central part of 59‐ha Glubokoye Lake. The first approach, the traditional one, was based on the difference between birth rate and rate of population change under the assumptions of Paloheimo’s model. The second approach involved detailed observations of size and age distribution dynamics. The mortality estimates from the two methods were nearly identical. This means that the assumptions of the traditional approach really hold in natural populations and, consequently, that this approach gives sufficiently accurate mortality estimates.