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Highlights from the March editions of ESA journals
Date:3/19/2009

ronments. They recommend caution and case-by-case assessments of best management practices for different forest types.

McIver J., A. Youngblood, S. L. Stephens. (2009) The National Fire and Fire Surrogate Study: ecological consequences of fuel reduction methods in seasonally dry forests. Ecological Applications 19:283-284. Full feature: pages 283-358. doi: 10.1890/07-1785.1


2. Including environmental data improves effectiveness of invasive species range predictions
Ecological Applications

Predicting the future spread of invasive species presents a challenge to ecologists that has until recently only been addressed by comparing species climate tolerance with established climate maps to predict susceptible areas. A new study finds, however, that when land-use and habitat data are incorporated, models predict that species may also be likely to colonize areas with unfavorable climates.

Ins Ibez of the University of Michigan and her colleagues examined not only historical and current climatic data, but also historical environmental information from both the native and invaded ranges of three New England invasive plants: Japanese barberry, bittersweet and winged euonymus (or burning bush). The models took into account human development, disturbances and agricultural land use; habitat measures of local ground cover, such as forest type and wetlands type, were also included.

The researchers found that although climate plays a large role in predicting invasive species distribution, the inclusion of land use and habitat data improve the explanatory power of their models. In some instances, the combination of an unfavorable climate with a suitable landscape cover increased the probability of species establishment. On the other hand, some areas with favorable climates became less so when their unfavorable habitat data were included.

Most importantly, the researchers write, th
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Contact: Christine Buckley
christine@esa.org
202-833-8773
Ecological Society of America
Source:Eurekalert

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