Fig. 4: Illustration of niche models (GAM3 and GAM4) of two filamentous cyanobacteria.

a Effects surface for water temperature and pre-week PAR on growth of Planktothrix. b Summed effects surface for total N and ammonia on growth of Planktothrix. c Summed effects surface for water temperature and pre-week PAR on growth of Pseudanabaena. d Partial effects of total P and wind speed on growth of Pseudanabaena. In in a, b, and c, the contour colors and lines indicate the predicted logarithms of cell densities (log10(1 + N), cells L−1) in the two genera (from low to high represented by green to bright orange); gray dots represent the absences of the corresponding genus and purple dots represent the presences. In d lines are smoothed effect of total P (top) and wind speed (down) on growth of Pseudanabaena, dots are partial residuals of model GAM4.