Data for: Red foxes enhance long-term tree growth near the Arctic treeline ...

• Main Authors: Lang, Jessica, Roth, James, Tardif, Jacques, Markham, John
• Format: Dataset
• Language: English
• Published: Dryad 2021
• Subjects: FOS Biological sciences; Boreal forests; Dendroecology; ecosystem engineer; Picea glauca; tree rings; Vulpes vulpes; Arctic; Canada; Churchill; Subarctic
• Online Access: https://dx.doi.org/10.5061/dryad.34tmpg4mq; https://datadryad.org/stash/dataset/doi:10.5061/dryad.34tmpg4mq

Recent climate warming is expected to increase tree growth and productivity, substantially altering ecological function and boundaries in northern ecosystems. Temperature and precipitation largely determine the range and growth of trees in any biome, yet variations in microsite conditions can also influence tree growth on a finer scale. By altering essential resources and habitat conditions, terrestrial organisms could modify Subarctic tree growth. Red foxes (Vulpes vulpes) are found in most terrestrial ecosystems and are considered ecosystem engineers by enriching soil nutrients and plant composition through denning. Added soil nutrients from prey remains, feces, and urine could benefit tree growth in Subarctic regions by alleviating soil nutrient limitations. We examined growth in white spruce (Picea glauca) trees growing on eight red fox dens and paired control sites near Churchill, Manitoba, Canada, at the Arctic treeline. Radial growth was 55% higher for trees on dens than on control sites between 1897 ...