Individual-based Integral Projection Model with Allee effect
August 17, 2026
This repository contains an individual-based integral projection model with Allee effect.
The repository includes a Jupyter Notebook that explains the model and the model outputs in addition to a Python file with code necessary to run the model.
Citation Information
| Publication Year | 2026 |
|---|---|
| Title | Individual-based Integral Projection Model with Allee effect |
| DOI | 10.5066/P14BDOPM |
| Authors | James Peirce, Richard A Erickson |
| Product Type | Software Release |
| Record Source | USGS Asset Identifier Service (AIS) |
| USGS Organization | Upper Midwest Environmental Sciences Center |
Related
Combining branching processes and Allee effects into an integral projection model to assess invasion risk Combining branching processes and Allee effects into an integral projection model to assess invasion risk
Invasive species threaten both ecological systems and economies. Successful establishment is governed partly by demographic stochasticity, where random individual-level variation can significantly influence invasion dynamics. A critical factor is the Allee effect, which describes reduced population growth at low densities, potentially serving as a barrier to persistence. Size-dependent...
Authors
James P. Pierce, Cynthia Kolar Tam, Joseph J. Parkos, Grace L. Loppnow, Mark W. Fritts, Alison A. Coulter, Richard A. Erickson
Related
Combining branching processes and Allee effects into an integral projection model to assess invasion risk Combining branching processes and Allee effects into an integral projection model to assess invasion risk
Invasive species threaten both ecological systems and economies. Successful establishment is governed partly by demographic stochasticity, where random individual-level variation can significantly influence invasion dynamics. A critical factor is the Allee effect, which describes reduced population growth at low densities, potentially serving as a barrier to persistence. Size-dependent...
Authors
James P. Pierce, Cynthia Kolar Tam, Joseph J. Parkos, Grace L. Loppnow, Mark W. Fritts, Alison A. Coulter, Richard A. Erickson