SREL Reprint #0265




A Preliminary Report on the Examination of Small Mammal Census Methods

Michael 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.

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