(a, top row) Four examples of landscape configurations
comprising dense tree cover habitats (green) and matrix (cream). From left
to right: creek edge, straight edge, peninsula edge and small forest patch.
(a, bottom row) EI maps that correspond to above landscape
configurations. The EI value at the central point (cross) is given for each
configuration. The central point is always located on an edge and its
distance to nearest edge is always zero. Nonetheless, EI increases in
absolute value as the central point is increasingly surrounded by a
different type of habitat. (b, top row) Four examples of
peninsula edges between matrix (cream, TC=0%) and habitats of varying tree
density (shades of green). From left to right: 25%, 50%, 75% and 100%.
(b, bottom row) EI maps that correspond to above landscape
contrasts. The EI value at the central point (cross) is given for each
configuration. The central point is always located on an edge and its
distance to nearest edge is always zero. EI increases as the edge contrast
increases.