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Figure 1

From: Evidence for ‘critical slowing down’ in seagrass: a stress gradient experiment at the southern limit of its range

Figure 1

(A,B) Maps of the study area and (C) aerial photo showing the two experimental sites chosen on an elevational gradient next to the islet of Zira within the Parc National du Banc d’Arguin, Mauritania. (D) A schematic representation of the experimental design: three replicate blocks were established at each site, and consisted, each, of one large (9 m2) and nine small die-off (1 m2) treatments as well as one large (9 m2) control. (E) Photo demonstrating the technique used to induce seagrass mortality within plots. (F) The status of the die-off plot at the start of the monitoring program. Dark grey in the maps represents intertidal flats, light grey shows the ocean, and the white depicts the land. Maps were created in Esri ArcMap 10.4 (http://desktop.arcgis.com/en/arcmap/) based on Landsat imagery (NASA, scene of February 1, 2016) provided at no costs by USGS89 at: http://earthexplorer.usgs.gov/. Aerial photograph courtesy Laura Soissons.

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