Ecological Archives E095-254-A2

Laura Russo, Jane Memmott, Daniel Montoya, Katriona Shea, Yvonne M. Buckley. 2014. Patterns of introduced species interactions affect multiple aspects of network structure in plant–pollinator communities. Ecology 95:2953–2963. http://dx.doi.org/10.1890/13-2229.1

Appendix B. Results including site-based variations in quantitative model responses.

Below are the same graphics as in the main text, but also including site-based variation (fine lines).  The individual sites vary in size, leading to the jagged shape of the averages.

FigB1

Fig. B1. The impact of simulated species addition on the unweighted (A) and weighted (B) average degree and the unweighted (C) and weighted (D) connectance of the community, across increasing novel species generality. The five models of simulated novel species behavior are represented as follows: additive is a purple line, competitive a blue line, supergeneralist a green line, randomized pollinator matrix a red line, and novel species substitution an orange line. The thick lines represent the average model response across the four sites, while the thin lines exhibit the responses of the individual sites. The large black square (■) represents the properties of the field study community, averaged across all four control sites and the smaller black squares represent the properties of the four control communities. The novel species saturates the interactions available in the smaller of the sites sooner, leading to the jagged appearance of the response.


 

FigB2

Fig. B2. The impact of simulated species addition on the nestedness (A), compartment number (B), modularity (C), and median compartment size (D) of the community, across increasing novel species generality. The five models of simulated novel species behavior are represented as follows: additive is a purple line, competitive a blue line, supergeneralist a green line, randomized pollinator matrix a red line, and novel species substitution an orange line. The thick lines represent the average model response across the four sites, while the thin lines exhibit the responses of the individual sites. The large black square (■) represents the properties of the field study community, averaged across all four control sites and the smaller black squares represent the properties of the four control communities. The novel species saturates the interactions available in the smaller of the sites sooner, leading to the jagged appearance of the response.


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