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. 2011 Sep 19;26(2):261–273. doi: 10.1111/j.1747-6593.2011.00285.x

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© 2011 The Authors. Water and Environment Journal © 2011 CIWEM.

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graphic file with name wej0026-0261-f6.jpg — Relationship between population density and pressure combination. Unimpacted/slightly impacted (no/slight pressure), water quality pressures only (W), hydromorphological pressures only (HMC) and a combination of water quality and hydromorphological pressures (W + HMC).