Robert J. Hijmans

The ”geosphere ” package (Version 1.2-4) (2010)

Robert J. Hijmans

This vignette describes the R package ’geosphere’. The package implements spherical trigonometry functions for geographic applications. Many of the functions have applications in navigation, but...

Research Article (2008)

John Wieczorek, Qinghua Guo, Robert J. Hijmans

The point-radius method for georeferencing locality descriptions and

The influence of spatial errors in species occurrence data on distribution models (2008)

Graham, Catherine H., Elith, Jane, Hijmans, Robert J., Guisan, Antoine, Townsend Peterson, A., Loiselle, Bett A., ...

1. Species distribution modelling is used increasingly in both applied and theoretical research to predict how species are distributed and to understand attributes of species’ environmental...

The influence of spatial errors in species occurrence data on distribution models (2008)

Graham, Catherine H., Elith, Jane, Hijmans, Robert J., Guisan, Antoine, Townsend Peterson, A., Loiselle, Bett A., ...

1. Species distribution modelling is used increasingly in both applied and theoretical research to predict how species are distributed and to understand attributes of species’ environmental...

The influence of spatial errors in species occurrence data on distribution models (2008)

Graham, Catherine H., Elith, Jane, Hijmans, Robert J., Guisan, Antoine, Townsend Peterson, A., Loiselle, Bett A., ...

1. Species distribution modelling is used increasingly in both applied and theoretical research to predict how species are distributed and to understand attributes of species’ environmental...

Novel methods improve prediction of species' distributions from occurrence data (2006)

Elith, Jane, Graham, Catherine H., Anderson, Robert P., Dudik, Miroslav, Ferrier, Simon, Guisan, Antoine, ...

Prediction of species' distributions is central to diverse applications in ecology, evolution and conservation science. There is increasing electronic access to vast sets of occurrence records in...

Novel methods improve prediction of species' distributions from occurrence data (2006)

Elith, Jane, Graham, Catherine H., Anderson, Robert P., Dudik, Miroslav, Ferrier, Simon, Guisan, Antoine, ...

Prediction of species' distributions is central to diverse applications in ecology, evolution and conservation science. There is increasing electronic access to vast sets of occurrence records in...

Novel methods improve prediction of species' distributions from occurrence data (2006)

Elith, Jane, Graham, Catherine H., Anderson, Robert P., Dudik, Miroslav, Ferrier, Simon, Guisan, Antoine, ...

Prediction of species' distributions is central to diverse applications in ecology, evolution and conservation science. There is increasing electronic access to vast sets of occurrence records in...

occurrence (2006)

Jane Elith, Catherine H. Graham, Robert P. Anderson, Miroslav Dudík, Simon Ferrier, Antoine Guisan, ...

methods improve prediction of species ’ distributions from

Novel methods improve prediction of species' distributions from occurrence data (2006)

Elith, Jane, Graham, Catherine H., Anderson, Robert P., Dudík, Miroslav, Ferrier, Simon, Guisan, Antoine, ...

Prediction of species' distributions is central to diverse applications in ecology, evolution and conservation science. There is increasing electronic access to vast sets of occurrence records in...

Novel methods improve prediction of species' distributions from occurrence data (2006)

Elith, Jane, Graham, Catherine H., Anderson, Robert P., Dudík, Miroslav, Ferrier, Simon, Guisan, Antoine, ...

Prediction of species' distributions is central to diverse applications in ecology, evolution and conservation science. There is increasing electronic access to vast sets of occurrence records in...

Mapping More of Terrestrial Biodiversity for Global Conservation Assessment (2004)

SIMON FERRIER, GEORGE V. N. POWELL, KAREN S. RICHARDSON, GLENN MANION, JAKE M. OVERTON, THOMAS F. ALLNUTT, ...

Global conservation assessments require information on the distribution of biodiversity across the planet. Yet this information is often mapped at a very coarse spatial resolution relative to the...

BioGeomancer: Automated Georeferencing to Map the World's Biodiversity Data

Guralnick, Robert P, Wieczorek, John, Beaman, Reed, Hijmans, Robert J

The BioGeomancer Project provides a toolkit to georeference data and specimens collected for natural history collections, a crucial task if the potential of these specimens is to be fully realized.

BioGeomancer: Automated Georeferencing to Map the World's Biodiversity Data

Guralnick, Robert P, Wieczorek, John, Beaman, Reed, Hijmans, Robert J

The BioGeomancer Project provides a toolkit to georeference data and specimens collected for natural history collections, a crucial task if the potential of these specimens is to be fully realized.

Locating Pleistocene Refugia: Comparing Phylogeographic and Ecological Niche Model Predictions

Waltari, Eric, Hijmans, Robert J., Peterson, A. Townsend, Nyári, Árpád S., Perkins, Susan L., Guralnick, Robert P.

Ecological niche models (ENMs) provide a means of characterizing the spatial distribution of suitable conditions for species, and have recently been applied to the challenge of locating potential...

Ecophysiological constraints shape autumn migratory response to climate change in the North American field sparrow

Monahan, William B, Hijmans, Robert J

Our ability to accurately forecast species' geographical responses to climate change requires knowledge of the proximate and ultimate drivers of their distribution. Here, we consider the...

Spectral Signature Generalization and Expansion Can Improve the Accuracy of Satellite Image Classification

Laborte, Alice G., Maunahan, Aileen A., Hijmans, Robert J.

Conventional supervised classification of satellite images uses a single multi-band image and coincident ground observations to construct spectral signatures of land cover classes. We compared this...