Statistical data

1. Select area

2. Select year

Disturbance (Prince Edward Island)
	2021	2019	2018	2017	2016	2015	2014	2013	2012	2011	2010	2009	2008	2007	2006	2005	2004	2003	2002	2001	1999	1998	1997	1995	1994	1993	1992	1991	1990
Insects ^{Footnote 1}
Area defoliated by insects and containing beetle-killed trees (hectares)		19	17	27	27	75	75	96	85	30					1,450	1,110	320								38,704	42,843	35,010	150
Balsam fir sawfly
Forest tent caterpillar															300	735	20
Gypsy moth		2	2	2				1	5
Jack pine budworm
Mountain pine beetle
Spruce beetle		5	5	10	10	50	50	60	50						300	175	150
Spruce budworm																									38,600	42,800	35,000	130
Western spruce budworm
Other insects		12	10	15	17	25	25	35	30	30					850	200	150								104	43	10	20
Fires ^{Footnote 2}
Area burned (hectares)	0	14	7	7	33	3	3	81	12	6	5	3	4	19	51	50	15	12	132	29	77	77	107	36	22	87	43	119	102
Number of fires	1	3	8	4	8	5	4	11	8	4	4	8	6	9	36	13	20	14	29	46	34	27	34	29	43	29	27	48	38

Footnotes

Footnote 1

Insects

Source: National Forestry Database. Forest insects – Forest insects, Table 4 Area of moderate to severe defoliation (including beetle-killed trees) by insects. (accessed June 21, 2022).

Notes:

Forest area disturbed by defoliators (e.g., budworms, Lymantria dispar) includes only areas with tree mortality or moderate to severe defoliation. Defoliation does not always result in mortality. Several factors, including defoliation severity, duration, and frequency, or presence of other stressors (e.g., drought), can affect the level of mortality.
Forest area disturbed by bark beetles (e.g., mountain pine beetle, spruce beetle) is derived from aerial surveys that map trees that are dead or dying from successful beetle attack.
Summing the areas affected by more than one insect to create a grand total can result in an overestimate if more than one insect species occurs in the same stand in the same year. For example, in a mixedwood forest, spruce budworm may defoliate balsam fir in the same stand where forest tent caterpillar is defoliating the aspen trees.

Footnote 2

Fires

Sources:

National Forestry Database. Forest fires, Table 3.1.1, Number of fires by cause class. (accessed June 21, 2022).
National Forestry Database. Forest fires, Table 3.2.1, Area burned by cause class. (accessed June 21, 2022).

Note:

The National Forestry Database sources the latest year’s fire data from the Canadian Interagency Forest Fire Centre and all years prior from the Canadian Wildland Fire Information System.