Ecological Archives A023-053-A6

Francis J. Burdon, Angus R. McIntosh, Jon S. Harding. 2013. Habitat loss drives threshold response of benthic invertebrate communities to deposited sediment in agricultural streams. Ecological Applications 23:1036–1047. http://dx.doi.org/10.1890/12-1190.1

Appendix F. Relationships of measured variables used for deposited sediment index.

FigF1

Fig. F1. Relationships of selected sediment parameters recorded from 30 streams sampled streams surveyed across the Canterbury Plains, South Island, New Zealand during the austral summer of 2009–2010. (a) Patch and reach % sediment cover were strongly correlated (Spearman's Rank correlation, ρ = 0.94, P < 0.001), as was (b) sediment depth and reach sediment cover (ρ = 0.90, P < 0.001). Likewise, SIS (g/m²) was strongly correlated (c, d) with these two measures repectively (ρ = 0.87, P < 0.001; ρ = 0.87, P < 0.001). SIS: Suspendable inorganic sediment.


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