Ecological Archives E094-098-A1

Laura Tamburello, Fabio Bulleri, Iacopo Bertocci, Elena Maggi, Lisandro Benedetti-Cecchi. 2013. Reddened seascapes: experimentally induced shifts in 1/f spectra of spatial variability in rocky intertidal assemblages. Ecology 94:1102–1111. http://dx.doi.org/10.1890/12-1293.1

Appendix A. Effects of spatial variation in Cystoseira amentacea cover and availability of open space on spectral density and mean percent cover of algal turf.

FigA1

Fig. A1. Treatment effects on the slopes of the relationship between spectral density of percent cover of algal turf and frequency of observation, on a logarithmic scale, in June 2007. Panels show the different experimental treatments; control (C), white noise (WS), red noise (RS) and the simultaneous combination of white noise and red noise (RWS) disturbances); filled and open symbols represent the two replicated transects per treatment.


FigA2

Fig. A2. Treatment effects on the slopes of the relationship between spectral density of percent cover of algal turf and frequency of observation, on a logarithmic scale, in October 2008. Panels show the different experimental treatments (control (C), white noise (WS), red noise (RS) and the simultaneous combination of white noise and red noise (RWS) disturbances); filled and open symbols represent the two replicated transects per treatment.


 

FigA3

Fig. A3. Treatment effects on the slopes of the relationship between spectral density of percent cover of algal turf and frequency of observation, on a logarithmic scale, in July 2010. Panels show the different experimental treatments (control (C), white noise (WS), red noise (RS) and the simultaneous combination of white noise and red noise (RWS) disturbances); filled and open symbols represent the two replicated transects per treatment.


 

FigA4

Fig. A4. Turf cover in transects exposed to red-noise treatment (RS). Each column shows one of the two replicate transects. From top to the bottom, panels illustrate turf cover in June 2007, October 2008, July 2009 and 2010. Black symbols represent turf percent cover, open symbols indicate one of the two states of experimental treatment (clipping/unclipping of canopy fronds, according to synthesized sequences of disturbance) on an arbitrary scale. For year 2009, transect 1 is displayed in Fig. 2.


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