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cff-version: "1.2.0"
message: If you use this software, please cite our article in the
Journal of Open Source Software.
authors:
- family-names: Rojas-Mayoral
given-names: Evaristo
orcid: "https://orcid.org/0000-0001-6812-9562"
- family-names: Rojas-Mayoral
given-names: Braulio
orcid: "https://orcid.org/0000-0003-2358-2843"
- family-names: Méndez-Sánchez
given-names: Federico A.
orcid: "https://orcid.org/0000-0002-3467-0008"
contact:
- family-names: Rojas-Mayoral
given-names: Evaristo
orcid: "https://orcid.org/0000-0001-6812-9562"
title: "NERD: Numerical Estimation of Rodenticide Density"
version: 1.0.0
date-released: 2025-02-28
url: "https://github.com/IslasGECI/nerd"
doi: 10.5281/zenodo.14947594
license:
- agpl-3.0-only
repository-code: https://github.com/IslasGECI/nerd
type: software
preferred-citation:
authors:
- family-names: Rojas-Mayoral
given-names: Evaristo
orcid: "https://orcid.org/0000-0001-6812-9562"
- family-names: Rojas-Mayoral
given-names: Braulio
orcid: "https://orcid.org/0000-0003-2358-2843"
- family-names: Méndez-Sánchez
given-names: Federico A.
orcid: "https://orcid.org/0000-0002-3467-0008"
date-published: 2025-03-03
doi: 10.21105/joss.06736
issn: 2475-9066
issue: 107
journal: Journal of Open Source Software
publisher:
name: Open Journals
start: 6736
title: "NERD: Numerical Estimation of Rodenticide Density"
type: article
url: "https://joss.theoj.org/papers/10.21105/joss.06736"
volume: 10
abstract: '
Invasive rodents are present on approximately 90% of islands worldwide, posing a serious threat to endemic and native island species and making rodent eradication central to island conservation.
Aerial broadcast is the preferred method for dispersing rodenticide bait.
Therefore, accurate bait density maps must be generated in real-time to maximize the efficiency of rodent eradication campaigns utilizing aerial dispersal methods.
Traditionally, conservationists have relied on ground-level bait dispersion maps generated with Geographic Information Systems (GIS).
However, this approach is time-consuming and based on untested assumptions.
To improve the accuracy and efficiency of aerial operations, we developed NERD (Numerical Estimation of Rodenticide Density), an algorithm that performs highly precise calculations and provides immediate results.
At its core, NERD is a probability density function that describes bait density on the ground as a function of the aperture diameter of the rodenticide bucket and helicopter speed.
We have confirmed the effectiveness of the model by successfully utilizing it in two island rodent eradication campaigns: mice eradication on San Benito Oeste (400 ha) in the Mexican Pacific and ship rat eradication on Cayo Centro (539 ha) of Banco Chinchorro in the Mexican Caribbean.
Notably, the Cayo Centro campaign is the largest rodent eradication ever conducted on a wet tropical island to date.
We have proved the efficiency of NERD and its potential to notably reduce the overall cost of large-scale rodent eradication campaigns.
'