Table 1 Visual survey results of small mammal encounters in the Habitat Management Unit (HMU) before snake suppression (March 2010–September 2012 and March 2013–August 2013) and after snake suppression (31 May 2015 to 6 August 2015).

From: Invasive brown treesnakes (Boiga irregularis) move short distances and have small activity areas in a high prey environment

 

Survey location

Searcher nights

Searcher distance (km)

Searcher hours

Suncus murinus

Mus musculus

Rattus sp.

CPUE all small mammals

Before snake suppression

Edge

132

116.6

284.8

0

2

10

0.042

Interior

119

116.0

290.5

1

0

0

0.003

       

Total

0.023

After snake suppression

Edge

80

67.0

152.4

53

0

50

0.676

Interior

154

133.7

303.8

17

0

102

0.392

       

Total

0.487

  1. Catch per unit effort (CPUE) is defined as total small mammals encountered/survey-person hrs.
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