The implication is that the excess phosphorus from the sewage treatment and perhaps agricultural runoff is causing the problem. I didn't see the paper address s

The implication is that the excess phosphorus from the sewage treatment and perhaps agricultural runoff is causing the problem. I didn't see the paper address specifically if that fjord had anoxic periods before humans changed the inputs. This fjord has a basin with a smallish, shallow mouth. The water tends to flow through in the surface layer and leave the deeper water in place. The paper is available: http://download.springer.com/static/pdf/338/art%253A10.1007%252Fs13280-014-0524-9.pdf?auth66=1424742129_640fd21c7658163020eb3d2c739d0791&ext=.pdf http://download.springer.com/static/pdf/338/art%253A10.1007%...