Michael T. Burrows, Robin Harvey, Linda Robb, Elvira S. Poloczanska, Nova Mieszkowska, Pippa Moore, Rebecca Leaper, Stephen J. Hawkins, and Lisandro Benedetti-Cecchi. 2009. Spatial scales of variance in abundance of intertidal species: effects of region, dispersal mode, and trophic level. Ecology 90:1242–1254.

Supplement

R code for simulating 2-D data with known spectral exponents, sampling, and ANOVA estimation of β.
Ecological Archives E090-080-S1.

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Authors
File list (downloads)
Description

Author(s)

Michael T. Burrows, Robin Harvey, Linda Robb, Elvira S. Poloczanska
Ecology Department
Scottish Association for Marine Science
Dunstaffnage Marine Laboratory
Oban PA37 1QA UK
E-mail: mtb@sams.ac.uk

Elvira S. Poloczanska, Nova Mieszkowska, Pippa Moore, Rebecca Leaper
Marine Biological Association of the United Kingdom
The Laboratory
Citadel Hill
Plymouth
PL1 2PB
Devon UK

Stephen J. Hawkins
Bangor University
Bangor
LL57 2UW
Gwynedd UK

Lisandro Benedetti-Cecchi
University of Pisa
Dipartimento di Biologia
Via A. Volta 6
I-56126 Pisa Italy

File list

SynthesiseSpectra2DBetaDetection1000.r  -- r code for generating 2D data and determining variance spectra repeatedly from subsamples (n = 1000)

Description

The SynthesiseSpectra2DBetaDetection1000.r program uses r code to recover spectral exponents from 2D simulated data using repeated hierarchical analysis of variance over a range of nested spatial scales. The method for generating the simulated data using inverse Fourier transforms of 1/f ^β weighted random phases and numbers, and the returned β-values are given in Appendix B.