K. L. Griffin

Growth increases but regeneration declines in response to warming and drying at Arctic treeline in white spruce (Picea glauca)

This study shows that warming and drying at an Arctic treeline site increased tree growth in mature trees but reduced sapling regeneration, suggesting potential limits to treeline advancement.

Vertical gradients in photosynthetic physiology diverge at the latitudinal range extremes of white spruce

The paper measures photosynthetic gradients in white spruce at latitudinal extremes, finding reduced vertical variation at high latitudes and lower carbon balance, suggesting constraints on northern treeline expansion.

Variation in white spruce needle respiration at the species range limits: a potential impediment to northern expansion

This study compares white spruce needle respiration at the northern and southern range limits, finding higher respiration at the northern limit, which may restrict tree survival and northern expansion.

High Leaf Respiration Rates May Limit the Success of White Spruce Saplings growing in The Kampfzone at the Arctic Treeline

This study examines leaf respiration rates in white spruce saplings and trees at the Arctic treeline, finding higher respiration in saplings and temperature sensitivity differences that may limit their survival.

Is the radial growth of irrigated urban trees more strongly correlated to light and temperature than water?

This study monitors irrigated urban trees to determine if radial growth is more influenced by light and temperature than water, finding growth driven by interactions between temperature, soil moisture, and vapor pressure deficit.