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Study finds urban warming increases scale insect populations and reduces tree health

A study published this past March revealed that urban warming increases the abundance of some tree pests, while decreasing tree health.

North Carolina State University researchers Adam Dale and Steven Frank tested the hypothesis that warm temperatures stimulates the reproduction of herbivorous pests such as armored scale insects (Melanaspis tenebricosa), while also increasing water stress and decreasing tree health. They studied several populations of red maple (Acer rubrum) trees in the city of Raleigh, NC.

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