Treehaven, situated between Rhinelander and Tomahawk, WI, is one of two relocatable sites located in NEON’s Great Lakes Domain. The Treehaven property spans 1400 acres and is owned and operated by the University of Wisconsin-Stevens Point (UWSP), College of Natural Resources. UWSP uses the property and conference center for summer field techniques courses but welcomes other educators, researchers, and the public to use and enjoy their forests, trails, and facility.
From the mid 1800’s until about 1930, the land was heavily harvested and burned with extensive cutovers and destructive wildfires. Farming was attempted on the cutover land and the open areas were subsequently grazed and mowed until the mid1950s.
In the 1950’s the property came under new ownership and a detailed management plan was developed calling for reforestation, sustainable timber harvest, and timber stand improvements. The new owners undertook extensive reforestation, planting nearly140000 trees, and gave the property its current name, Treehaven. In 1979, 850 acres were donated to the University of Wisconsin-Stevens Point, and the university has since expanded to 1400 acres through additional purchases and donations. Since acquiring the land in 1979, UWSP students and staff have used the site to study forest vegetation, fire history ,watersheds, and soils, In addition, forest improvement practices (timber harvest, thinning, and planting) have occurred on nearly 500 acres.
Most of the forests on the property are second growth forests which naturally regenerated after extensive fires and grazing were excluded from the site; however, there are a few, isolated, large diameter trees that pre-date the period of heavy timber harvest. Lowland areas consist of black spruce/tamarack and non-forested acid bog environments, along with a mix of sedge, shrub, hardwood and cedar wetlands. Upland sites are primarily composed of aspen, white birch, and red maple, with a lesser area of mixed red pine, white pine, white spruce, and balsam fir. Red pines planted under the 1956 management plan are prominent along roads throughout the property. A minor component of northern hardwoods and hemlock hardwoods are also present in smaller area, especially on the western edge of the property. Management activities in the proximity of NEON’s tower currently are geared to the promotion of sugar maple.
Treehaven’s climate is typical of northern to north-central Wisconsin. It is a humid continental climate with warm summers and no dry season. The warm season lasts from approximately mid-May to mid-September with the warmest temperatures typically in July (average high 79 F). The cold season lasts from November to March with the coldest temperatures typically in January (average low 4 F). The annual average temperature is 41.6 F, and temperatures rarely drop below -17 F or above 87 F.
Average rainfall is 31.49 inches and snowfall is average snowfall is approximately 62 inches per year. Wind speeds are typically calm to moderate, rarely exceeding 20 mph.
Daylight hours vary significantly throughout the course of the year with the longest day in June having 15:42 hours of daylight and the shortest day in December having 8:41 hours of daylight.
Site Specific Topics
The Treehaven tower location and surrounding tower plots are approximately 1 mile due south of the Steigerwaldt tower and its surrounding plots. Because the sites are managed differently, the close proximity of the towers could help isolate the effect of management practices on carbon cycling dynamics.