Editing Permaculture (section)

=== Edge effect ===

The [[edge effect]] in ecology is the increased diversity that results when two [[habitat]]s meet.{{sfn|Hemenway|2009|pp=45–47, 286}} Permaculturists argue that these places can be highly productive. An example of this is a coast. Where land and sea meet is a rich area that meets a disproportionate percentage of human and animal needs. This idea is reflected in permacultural designs by using spirals in herb gardens, or creating ponds that have wavy undulating shorelines rather than a simple circle or oval (thereby increasing the amount of edge for a given area).<ref name="DeepGreen 2013">{{Cite news |title=10. Edge Effect |work=Deep Green Permaculture |url=https://deepgreenpermaculture.com/permaculture/permaculture-design-principles/10-edge-effect/ |date=3 April 2013 |access-date=19 January 2017}}</ref> On the other hand, in a keyhole bed, edges are minimized to avoid wasting space and effort.{{sfn|Hemenway|2009|pp=45–47, 286}}