Data from: Can a mate-finding Allee effect be elicited to help eradicate invasive mammals?
Data files
Dec 16, 2025 version files 56.80 MB
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calcresults.py
2.45 KB
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calculation.py
36.73 KB
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Metadata.pdf
45.26 KB
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movie.wmv
26.35 MB
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movieNoDecoy.wmv
30.18 MB
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params.py
2.33 KB
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postSimulation.py
742 B
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README.md
2.90 KB
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ressy.img
67.87 KB
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ressyalldatatraploc5.csv
107.38 KB
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startSimulation.py
3.58 KB
Abstract
The Allee effect is an important ecological process that has implications for extinction of endangered species and for assisting the management of invasive species. Few instances of Allee effects have been quantified in nature due to the adaptive resilience of species and the difficulty in empirically linking ecological mechanisms to population change. We developed an individual-based simulation model to mechanistically explore whether a management intervention could elicit a mate-finding Allee effect to assist the eradication of an invasive mammal. This repository holds the data and Python computer code to run the model. There are also two movies illustrating the individual-based model with and without an elicited Allee effect.
Dataset DOI: 10.5061/dryad.wstqjq30m
Description of the data and file structure
We developed an individual-based simulation model to mechanistically explore whether a management intervention could elicit a mate-finding Allee effect to assist the eradication of an invasive mammal. We used stoats (Mustela erminea) as a test species and generalised the results by examining the sensitivity of Allee effects to a range of biological attributes and management scenarios.
Files and variables
File: Metadata.pdf
Description: File describing contents of this repository
File: postSimulation.py
Description: Script to initiate the processing of results from simulation.
File: ressy.img
Description: Erdas Imagine raster file of Resolution Island at 10-metre resolution projected in epsg:27200.
File: ressyalldatatraploc5.csv
Description: Eastings and northing of traps used in study.
Variables
- sid: Trap id number
- lat: Latitude
- long: Longitude
- easting: Eastings in epsg:27200
- northing: Northings
File: startSimulation.py
Description: Script to set data and results directories, number of iteration, and intiate the simulation.
File: movie.wmv
Description: Video file that demonstrates movement, survival, trapping, reproduction and decoy deployment. The following symbols are used in the video:
- Green squares are traps
- Small blue immobile squares that fade with time are the pheromone decoys
- Small black filled circles are males exhibiting home range movement
- Large black filled circles are males exhibiting mate-searching movement
- Small blue filled circles are non-pregnant females exhibiting home range movement
- Large blue filled circles are non-pregnant females exhibiting mate-searching movement
- Small red filled circles are pregnant females exhibiting home range movement
- Large stationary black or blue filled circles are nests with non-fertilised female kits
- Stationary red squares are nests with non-fertilised female kit
File: movieNoDecoy.wmv
Description: Video files as above, but without deployment of pheromone decoys.
File: calcresults.py
Description: Script with functions to process results (to be placed in a 'pheromone' subdirectory).
File: calculation.py
Description: Script that runs the simulation and writes results to directory (to be placed in a 'pheromone' subdirectory).
File: params.py
Description: Script to set parameters for simulation (to be placed in a 'pheromone' subdirectory).
Code/software
Python 3.7.3 was used on linux with the following packages:
Numpy 1.16.2
Scipy 1.2.1
Numba 0.43.1
RIOS 1.4.8
gdal 2.4.0
matplotlib 3.0.3
prettytable 0.7