AlphaSDM: Species Distribution Models on 'AlphaEarth' Satellite Embeddings

Fits species distribution models and maps habitat suitability at up to 10 m resolution from occurrence records alone, using the 'AlphaEarth' Foundations satellite embeddings (Brown et al. 2025) <doi:10.48550/arXiv.2507.22291>. The embeddings, 64 values per pixel per year from a geospatial foundation model, replace environmental layers, so none need to be sourced or aligned. Provides tools to format occurrence records, place pseudo-absences, train and evaluate an ensemble of machine learning models, and export habitat-suitability rasters. Sampling, model training and prediction all run on 'Google Earth Engine', which requires a free account for noncommercial use.

Version:	0.2.0
Imports:	jsonlite, reticulate (≥ 1.41), sf, stats, utils
Suggests:	stars, withr, testthat (≥ 3.0.0), knitr, rmarkdown
Published:	2026-10-04
DOI:	10.32614/CRAN.package.AlphaSDM
Author:	James Longo [aut, cre, cph]
Maintainer:	James Longo <james.longo.birds at gmail.com>
BugReports:	https://github.com/James-Longo/AlphaSDM/issues
License:	MIT + file LICENSE
URL:	https://james-longo.github.io/AlphaSDM/, https://github.com/James-Longo/AlphaSDM
NeedsCompilation:	no
SystemRequirements:	Python (>= 3.9) with the 'earthengine-api' module; 'reticulate' installs it automatically when needed.
Language:	en-US
Citation:	AlphaSDM citation info
Materials:	README, NEWS
CRAN checks:	AlphaSDM results

Documentation:

Reference manual:	AlphaSDM.html , AlphaSDM.pdf
Vignettes:	Getting started with AlphaSDM (source)

Downloads:

Package source:	AlphaSDM_0.2.0.tar.gz
Windows binaries:	r-devel: not available, r-release: not available, r-oldrel: AlphaSDM_0.2.0.zip
macOS binaries:	r-release (arm64): AlphaSDM_0.2.0.tgz, r-oldrel (arm64): AlphaSDM_0.2.0.tgz, r-release (x86_64): AlphaSDM_0.2.0.tgz, r-oldrel (x86_64): AlphaSDM_0.2.0.tgz

Linking:

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