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European ash is a significant tree commercially, ecologically, and culturally. It is currently
threatened by two invasive species, the fungus that causes ash dieback and
Conifers are commonly planted in North America to provide year-round screening, as windbreaks or as focal trees in the landscape.
Interception of potential invasive species at ports-of-entry is essential for effective biosecurity
and biosurveillance programs. However, taxonomic assessment of the immature stages
Iconic tree species include those native trees that once dominated the typical American city landscape. The American elm and chestnut are the first two that come to mind, and now ash trees are similarly under significant threat of loss.
ManagementEmerald ash borer (Agrilus planipennis) was first discovered in southeastern Michigan in 2002.
Intensively managed landscapes, like those found in many public gardens, attempt to mitigate the impact of significant weather events through irrigation, improving soil characteristics, and mulching.
In August 2008, a dangerous pest, the nonnative, invasive Asian longhorned beetle, was discovered in Worcester County, Massachusetts.
- Many exotic plant pests and pathogens are unknown prior to their establishment, making prevention and management difficult.
North American forests and forest management institutions are experiencing a wide range of significant ecological disturbances and socioeconomic changes, which point to the need for enhanced resilience.
Sunflower is a unique model species for assessing crop responses and adaptation to climate change. We provide an initial assessment of how climate change may influence the abiotic and biotic environment of cultivated sunflower across the world.