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Does the Lack of Reference Ecosystems Limit Our Science? A Case Study in Nonnative Invasive Plants as Forest FuelsAuthor(s): Alison C. Dibble; Catherine A. Rees
Source: Journal of Forestry
Publication Series: Scientific Journal (JRNL)
Station: Northeastern Research Station
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DescriptionIn forest experiments the problem of inadequate controls often arises. True controls might not be required in case studies, comparisons along an environmental gradient, or comparisons of multiple treated and untreated areas. In a recent characterization of fuels in invaded and uninvaded forest conditions for four forest types at 12 locations in Maine, Maryland, Massachusetts, New Jersey, New York, Vermont, and Virginia, high-quality reference stands usually were not available as true controls. We called the uninvaded areas "comparison areas," and applied a modified planar sampling technique to quantify live and dead fuels. No overarching pattern emerged; fuels in fireadapted pitch pine differed from the three other forest types in that stands invaded by black locust had fewer 1- and 10-hour fuels, but more forbs cover and higher basal area. Invasive shrubs increased fuel height and density across most forest types. Invasive grasses in forests present an underrecognized hazard fuel if drought ensues. The comparison stand study design enabled uncovering of significant differences between invaded and uninvaded stands, especially in hardwoods and mixed woods, and fuels in softwoods were less affected by invasive plants.
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CitationDibble, Alison C.; Rees, Catherine A. 2005. Does the Lack of Reference Ecosystems Limit Our Science? A Case Study in Nonnative Invasive Plants as Forest Fuels. Journal of Forestry
Keywordscontrol, reference conditions, wildland urban interface, fire, fuels, invasive plants
- Use of comparison areas rather than controls in a study of fuels in invaded forests of the northeast and mid-Atlantic states
- Deer prefer pine seedlings growing near black locust
- Summary of mortality statistics and forest health monitoring results for the Northeastern United States
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