Slide 10: Principles: Response curves
Response curves are an integral part of SDM. In essence, a response curve is a plot of species presence data in relation to a changing environmental variable.
Models generally assume that the response curve to environmental variables is Gaussian or bell-shaped, but in reality, the response curve may be variously-shaped. In complex communities, response curves often assume truncated forms, since biotic interactions may reduce the realised niche from its potential.
Model performance is thus underpinned by its capacity to successfully represent this response curve.