Production and Nutritive Value of Aspen Understory, Black Hills

Abstract

Production of and nutrient concentrations in understory vegetation was measured in aspen stands representing three different seral stages in the Black Hills. There was little variation in concentrations of nutritive elements in the same plant species among stands. Differences in species composition and shrub, forb, grass, and total production caused some variation in total available nutrients. Production of aspen understory, while variable (676-1226 kg/ha), was one of the higher producing types in the area. Digestible dry matter, fiber, lignin, and calcium were at acceptable levels for white-tailed deer growth. Protein and phosphorus concentrations may be considered marginal, but variation in concentrations among plant species, the large number of plant species available, and the selective feeding habits of deer may preclude nutrient deficiencies in their diet. The value each of the seral stages has to livestock and wildlife is discussed and management suggested.