Gnangara Groundwater System (pitfall traps)
Basic information
Sample name: Gnangara Groundwater System (pitfall traps)

Reference: B. A. Wilson, L. E. Valentine, A. Reaveley, J. Isaac, and K. M. Wolfe. 2012. Terrestrial mammals of the Gnangara Groundwater System, Western Australia: history, status, and the possible impacts of a drying climate. Australian Mammalogy 34:202-216 [ER 988]
Country: Australia
State: Western Australia

Coordinate: 31° 33' S, 115° 38' E
Basis of coordinate: based on nearby landmark
Geography comments: "40 sites in the major areas of continuous remnant bush land in the northern and eastern areas of the GGS" (coordinate based on Yanchep, which is close to most of the sites)
Climate and habitat
Habitat: Mediterranean woodland
Substrate: ground surface
Habitat comments: "Banksia woodland, coastal scrub, jarrah forest, tuart forest and Melaleuca wet or dampland"
Life forms: rodents, other small mammals
Sites: 40
Sampling methods: no design, drift fences, pitfall traps
Sample size: 105
Years: 2007, 2008
Nets or traps: 400
Sampling comments: "Each site contained one pitfall trap array, consisting of 10 pitfall traps arranged in a Y shape with three pitfall traps along each radiating arm and a central pit. Pitfall traps were placed at ~7-m intervals and were connected with 30-cm-high aluminium fly-wire drift fence... Traps were opened for 1220 nights in total for the three trapping periods"; pitfall traps were apparently not baited and a trap night total is not given
Sample: 1477
Contributor: John Alroy
Enterer: John Alroy
Created: 2015-03-04 10:03:21
Modified: 2015-03-04 10:03:21
Abundance distribution
4 species
2 singletons
total count 105
standardised richness: not computable
Fisher's α: 0.824
geometric series k: 0.2351
Hurlbert's PIE: 0.3950
Shannon's H: 0.6617
Good's u: 0.9810