Landscape Fragmentation and Ice Storm Damage in Eastern Ontario Forests
- 112 Downloads
With return times between 20 and 100 years, ice storms are a primary disturbance type for temperate forests of eastern North America. Many studies have been conducted at the forest patch and plot scales to examine relations between damage and variables describing site, composition and structure. This paper presents results from a landscape scale study of fragmentation relations with damage in eastern Ontario forests. Data previously collected for two independent and spatially non-overlapping patch level damage studies were used. A Generalized Linear Model (GLM) was used to analyse relations between damage and fragmentation metrics representing patch isolation, edge density, and the relative size and distribution of patches in the landscape. The metrics were applied using spatial extents of 1 × 1 km and 4 × 4 km, following analyses of the variability of numbers of patches and of the lacunarity of forest patterns over a range of extents. The results showed that patch isolation, as measured by the mean Euclidean distance between patches (ENN) was significantly related to damage.
KeywordsDamage Disturbance Fragmentation metrics General linear model Ice storm Lacunarity Landscape extent Temperate forest
Unable to display preview. Download preview PDF.
- Butson C. and King D.J. 2005. Lacunarity analysis to determine optimum extents for sample-based spatial information extraction from high-resolution forest imagery. Int. J. Remote Sens. (in press).Google Scholar
- Charbonneau N.C. 2003. Influence of canopy cover and landscape structure on proportion of alien and shade-intolerant plant species in forest sites. M.Sc. Thesis Department of Biology Carleton University, Ottawa, Ontario, Canada.Google Scholar
- Environment Canada. 1998. The worst ice storm in Canadian history. http://www.msc-smc.ec.gc.ca/media/icestorm98/icestorm98_the_worst_e.cfm.
- Hauer, R.J., Hruska, M.C., Dawson, J.O. 1994Trees and Ice Storms: The Development of Ice Storms – Resistant Urban Tree Populations. Special Publication 94–1Department of Forestry, Univesrity of Illinois at Urbana-ChampaignUrbana IL1261801Google Scholar
- Lautenschlager, R.A., Nielsen, C. 1999Ontario’s forest science efforts following the 1998 ice stormForest. Chronicle75633641Google Scholar
- McGarigal K., Cushman S.A., Neel M.C. and Ene E. 2002. FRAGSTATS: Spatial Pattern Analysis Program for Categorical Maps. Computer software program produced by the authors at the University of Massachusetts, Amherst. Available at the following web site: www.umass.edu/landeco/research/fragstats/fragstats.html.Google Scholar
- Pellikka, P., Seed, E.D., King, D.J. 2000Modelling deciduous forest ice storm damage using aerial CIR imagery and hemispheric photographyCan. J. Remote Sens.26394405Google Scholar
- Smith, K.T., Shortle, W.C. 1998Will Winter Storm Injury Affect Hardwood Quality and Maple Sap Production Ice Storm 1998, Information Sheet #2Northeastern Research Station, USDA Forest ServiceDurham, NH2Google Scholar
- Smith, W.H. 1998Relation to disease and decay, In Irland L.C.: Ice Storm 1998 and the forests of the NortheastJ. Forest963240Google Scholar
- Van Dyke O.R.P.F. Landmark Consulting. 1999. A Literature Review of Ice Storm Impacts on Forests in Eastern North America. SCSS Technical Report #112.Google Scholar
- Wear D.N. and Greis J.G. 2002. The Southern Forest Resource Assessment Summary Report. http://www.srs.fs.fed.us/sustain/report/.