Moth dynamics in subarctic birch forest

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Birch forest images

This is what the birch forest looks like during and after an outbreak by defoliating moth. Less severe outbreaks cause defoliation and perhaps some growth reduction, while persistent outbreaks can cause forest death over large areas.

O. brumata outbreak	O. brumata outbreak	O. brumata outbreak	O. brumata outbreak
O. brumata outbreak	O. brumata outbreak	Budburst	Budburst
Budburst	Budburst	Defoliation	Defoliation
Dead forest	Dead forest	Dead forest	Mid summer
Mid summer	Mid summer	Mid summer	Mid summer
Mid summer	Green understory	Green understory	Green understory
Green understory	Green understory	Green understory	Defoliation
Defoliation	Defoliation	Defoliation	Defoliated dwarfshrub
Defoliated dwarfshrub

 

All images are courtesy of the staff and students of the birch moth project. Please use and distribute only with appropriate reference to www.birchmoth.com

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© 2008 Jane Uhd Jepsen
Original design by Andreas Viklund