University of Minnesota
University of Minnesota
College of Biological Sciences


Experiment 091 - The Effect of Seed Addition on Biodiversity in an Oak Savanna

This experiment was established in an unfenced area of field D in the spring of 1991. There are 10 replicates of each of 5 treatments, making a total of 50 plots. Each plot is 1.5m x 1.5m with 1.0m aisles between the plots. The 50 plots were randomly assigned their treatments. Seeds were added to the plots in June of 1991 according to the following treatments:

A. Complete Control
B. Raked Control
C. Forb Seed Added
D. Grass Seed Added
E. Forb and Grass Seed Added

The number of grass and forb seedlings, in the center square meter, were counted in late July and late August of 1991. Percent cover estimates were done, also in the center square meter, of the established plants alone in late July and then, of the established plants and the seedlings together, in late August. Percent cover estimates will continue to be done on an annual basis. For a list of treatments, see the treatment layouts in file trmte91.

Methods for e091


Dataset IDTitleRange of Years (# years with data)
mpce091Mean percent cover--average of 2 survey groups1993-1993 (1 year)
pce091Plant species percent cover data1991-1998 (5 years)
sdle091Seedling density1992-1992 (1 year)
nohe091Soil nitrate and ammonium1994-1994 (1 year)