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biology;
generalized linear models
Three 20 minutes surveys were conducted in each of 31 × 2 ha belt transects in buloke woodland patches within the Wimmera Plains of western Victoria, Australia.
There are 31 observations on 11 variables.
| miners | The presence (value 1) or absense (value 0) of noisy miners |
| eucs | The number of eucalypts in each 2 hectare transect |
| area | The area (in hectares) of remnant patch of vegeatation in which the transect was located |
| grazed | Whether the area was grazed (value 1) or not (value 0) |
| shrubs | Whether shrubs were present in the transect (value 1) or not (value 0) |
| bulokes | The number of buloke trees in each 2 hectare transect |
| timber | The number of pieces of fallen timber in the transect |
| finelitt | The percentage of fallen litter on the ground (estimated from four 3m diameter quadrats randomly located in each transect) |
| minerab | The number of noisy miners observed in three 20 minute surveys |
| declinerab | The number of declining species (as defined by a particular list) observed during three 20 minutes surveys |
There are no missing values.
From Martine Maron.
Maron, Martine. Threshold effect of eucalypt density on an aggressive avian competitor. Biological Conservation, 136, 100–107.