|SREL Reprint #0265|
A Preliminary Report on the Examination of Small Mammal Census Methods
H. Smith, John B. Gentry and Frank B. Golley
Two tests of the standard minimum grid were carried
out in deciduous forests in South Carolina, USA. Comparison of the ration of captures on the outer
compared to the inner rows of traps over time showed that immigration into the
grid was not significant. Nevertheless,
it was not possible to capture the resident population during the recommended
five day period. On the first grid
more than one-half of the individuals and two of four species were collected
after day five; on the second grid about 19% were taken after day nine.
Comparison of the ratio of total captures over available traps for each
grid line (called probability of capture) permitted calculation of the boundary
area of the grid and, therefore, the total area trapped.
SREL Reprint #0265
Smith, M.H., J.B. Gentry, and F.B. Golley. 1969. A
preliminary report on the examination of small mammal census
methods. In Energy Flow Through Small Mammal Populations.
Proceedings of IBP Meeting on Secondary Productivity in
Small Mammal Populations, edited by K. Petrusewicz and L. Ryszkowski. p. 25-29. Oxford, England.