Landscape connectivity is defined as a
threshold phenomenon, in which the landscape initially becomes fragmented abruptly over a very small range of habitat loss (Gardner et al.
6, indicate that whatever internal structure may be responsible, the scattering sets in as a
threshold phenomenon, which occurs at about the same time as the onset of plastic yielding and heating.
Analysis of six years of data on 356,222 men shows that the heart disease-blood cholesterol relationship is not a "
threshold phenomenon." Instead, the risk of heart disease rises with increasing cholesterol.