Figure 2
From: Individual diet variability shapes the architecture of Antarctic benthic food webs
Benthic food web structure in Tethys Bay (Terra Nova Bay, Ross Sea). Top: before sea-ice breakup; bottom: after sea-ice breakup. Each node represents one ITU in the ITU-webs and one species (or a basal resource) in population-webs and taxonomic-webs. Each arrow points from a resource to its consumer, thickness being proportional to linkage strength. Each node is positioned with respect to its δ13C value and Trophic Level (TL). Basal resources are shown in green. Superscript asterisks (*) indicate significant differences between before and after sea-ice breakup, one, two and three asterisks indicating p < 0.05, p < 0.01 and p < 0.001 respectively. Superscript letters (a,b,c) indicate differences between food web types. For statistical tests, see “Materials and methods” section. The food web graphs were developed using Cytoscape software. For the list of species, refer to Table S1.
