Martha M. Ellis, Jennifer L. Williams, Peter Lesica, Timothy J. Bell, Paulette Bierzychudek, Marlin Bowles, Elizabeth E. Crone, Daniel F. Doak, Johan Ehrlén, Albertine Ellis-Adam, Kathryn McEachern, Rengaian Ganesan, Penelope Latham, Sheila Luijten, Thomas N. Kaye, Tiffany M. Knight, Eric S. Menges, William F. Morris, Hans den Nijs, Gerard Oostermeijer, Pedro F. Quintana-Ascencio, J. Stephen Shelly, Amanda Stanley, Andrea Thorpe, Tamara Ticktin, Teresa Valverde, and Carl Weekley. 2012. Matrix population models from 20 studies of perennial plant populations. Ecology 93:951.

Data Paper

Ecological Archives E093-083-D1.


Data Files


Martha M. Ellis
Wildlife Biology Program, College of Forestry and Conservation
University of Montana
Missoula, Montana 59812 USA

For co-author's addresses, see Metadata

Data Files

Species_Information.txt – Species data for all studies, including study details, limited life history characteristics, and species descriptions. ASCII text, tab delimited, 20 lines (not including header row), 5 KB.
(md5: 3aaff18b97d15ab45fe2bba8f721d20c)

Population_data.txt – Details on population locations, habitats, and observed population status at study end and revisit. ASCII text, tab delimited, 82 lines (not including header row), 8 KB.
(md5: 73d9b38e52661829d3aea635498922a3)

Transition_Matrices.txt – Annual transition matrices and observed stage structures for each population and year of study. ASCII text, tab delimited, 461 lines (not including header row), 249 KB.
(md5: f0a49ea65b58c92c5675f629f3589517)


Demographic transition matrices are one of the most commonly applied population models for both basic and applied ecological research. The relatively simple framework of these models and simple, easily interpretable summary statistics they produce have prompted the wide use of these models across an exceptionally broad range of taxa. Here, we provide annual transition matrices and observed stage structures/population sizes for 20 perennial plant species which have been the focal species for long-term demographic monitoring. These data were assembled as part of the ‘Testing Matrix Models’ working group through the National Center for Ecological Analysis and Synthesis (NCEAS). In sum, these data represent 82 populations with > 460 total population-years of data. It is our hope that making these data available will help promote and improve our ability to monitor and understand plant population dynamics.

Key words: conservation; Demographic matrix models; ecological forecasting; extinction risk; matrix population models; plant population dynamics; population growth rate.

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