Retention patches protect some habitat while creating new forest edges
WHAT THE EVIDENCE SAYS
Researchers used approximately 105,000 simulated managed-landscape configurations to examine aggregated retention under fixed harvested-area assumptions. The simulations found that placing 20 percent of harvested stands into retention could increase the area influenced by forest edges by roughly four to 30 percent per harvested area, depending on the chosen edge-distance definition.
WHY IT MATTERS / OUR READ
Keeping live forest inside a working landscape has value, but a stand-level retention percentage is not a landscape design. Patch shapes, connected cores and exposure of neighboring stands can materially change which ecological conditions remain.
CAVEATS / UNCERTAINTY
These are geometric model outcomes, not measured wildlife, carbon or forest-growth responses. Edge-effect distances and harvesting assumptions determine the estimates; no universal prescription follows from this calculation.
SOURCE
Landscape Ecology · forest retention and edge-modeling study
View original evidence ↗
A landscape model quantifies why the geometry of retained forest matters as well as the retained percentage.
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