 The study found a recent loss of shore pine biomass in southeast Alaska due to competition with sicker spruce and western hemlock, and identified a strong correlation between the decline in shore pine growth and the rise in growing season-dienal minimum air temperature. The authors suggest that warm summer nights, called daytime temperatures, and reduced-dienal temperature ranges are associated with greater cloud cover in southeast Alaska, which could lead to unfavorable tree carbon budgets and or favor infection by foliar pathogens such as dothostroma needle blight. Further field study is necessary to identify the proximal causes of the growth decline, but the authors anticipate continuation of the shore pine growth decline in southeast Alaska. This article was authored by Patrick F. Sullivan, Robin L. Mulvey, Annalise H. Brownlee, and others.