Forestry Hanover Seminar Series: Inga Parker La Puma, Forest Landscape Ecology Lab, UW-Madison

Date: February 4, 2014
Location: 225 Natural Resources Bldg.

Forestry Hanover Seminar Series:

Landscape disturbance in the modern forest: Modeling the role of human influences on forest ecosystems

Presented by Inga Parker La Puma
Forest Landscape Ecology Lab
University of Wisconsin-Madison

4 p.m. (Refreshments at 3:50 p.m.)

In the Pinelands of New Jersey, the interactions between human altered land, wildfire suppression and forest succession led to an area of hardwood dominated forest composition adjacent to altered land.  We used this area of wildfire suppression and forest succession in a forest landscape disturbance model (LANDIS-II).   Adding the potential maximum land-use change build-out model along with climate change increased future forest composition change from pine to oak dominated forest across the landscape.  Fire frequency did not increase in the model due to extensive forest fragmentation.

We also modeled the harvest of branches for biomass with LANDIS-II and included a soil component.  Different recommended levels of branch retention on harvest sites could affect long term forest carbon and nitrogen stocks, but they could also vary across environmental gradients.  Scenarios with higher branch biomass removed show lower carbon and nitrogen stocks after several harvest rotations in Aspen/Birch and Northern Hardwood sites compared to bole-only harvest.  Landscape level forest ecosystem models may be critical in our understanding of biomass availability, soil fertility and site versus landscape level carbon accounting over the long term.