Koalas: Koalas in Noosa, QLD, Australia

In romunov/AED: Package Accompanying 'Mixed Effects Models and Extensions in Ecology with R'

Description

Presence or absence of koalas in Noosa in Queensland, Australia

Usage

data("Koalas")

Details

Data based on a survey which tried to determine koala (Phascolarctos cinereus) presence or absence at 300 locations in Noosa (QLD, Australia) as part of a broader study investigating the role of landscape change on koala distributions across eastern Australia (see McAlpine et al., 2006, Rhodes et al., 2006). Some 100 sites were chosen based on stratified random sampling. Within each site, three subsites were located 100 meters apart. Presence or absence of koalas was recorded for each subsite using standardized searches of koala fecal pellets (see Phillips and Callaghan, 2000).

Koalas prefer tree species in descending order which were classified as primary, secondary and supplementary according to Australian Koala Foundation (unpublished data). Percentage of primary, secondary and supplementary tree species was recorded for each subsite, as well as the habitat classified in highly suitable, suitable, marginal and unsuitable. Location of paved roads were also mapped in GIS. See page 469 of the book for some additional information and maps.

Each row represents subsite entry:

• pprim_ssite Percentage of trees in each subsite that are primary tree species

• psec_ssite Percentage of trees in each subsite that are secondary tree species

• phss_1km, phss_2.5km. phss_5km Percentage of landscape within 1, 2.5 and 5 km, respectively, of each subsite that is highly suitable and suitable habitat

• pm_1km, pm_2.5km, pm_5km Percentage of landscape within 1, 2.5 and 5 km, respectively, of each site that is marginal habitat

• pdens_1km, pdens_2.5km, pdens_5km Density (number of patches/100 ha) of habitat patches, consisting of highly suitable, suitable and marginal habitat, in landscape within 1, 2.5 and 5 km, respectively, of each subsite

• edens_1km, edens_2.5km, edens_5km Density (m/ha) of habitat patch edges, consisting of highly suitable, suitable and marginal habitat, in the landscape within 1, 2.5 and 5 km, respectively, of each subsite

• rdens_1km, rdens_2.5km, rdens_5km Density (m/ha) of paved roads within 1, 2.5 and 5 km, respectively, of each subsite

References

McAlpine CA, Rhodes JR, Callaghan JG, Bower ME, Lunney D, Mitchell DL, Pullar DV, Possingham HP. 2006. The importance of forest area and configuration relative t olocal habitat factors for conserving forest mammals: a case study of koalas in Queensland, Australia. Biological conservation 132: 153-165.

Rhodes JR, Wiegand T, McAlpine CA, Callaghan J, Lunney D, Bowen M, Possingham HP. 2006. Modeling species' distributions to improve conservation in semiurban landscapes: koala case study. Conservation biology 20: 449-459.

Phillips S and Callaghan J. 2000. Tree species preferences of koalas (Phascolarctos cinereus) in the Campbelltown area south-west of Sydney, New South Wales. wildlife research 27: 509-516.

Zuur et al. 2009. Mixed effects models and extensions in ecology with R. Springer. ISBN: 978-0-387-87457-9.

romunov/AED documentation built on May 13, 2021, 5:12 p.m.