I represented the BNZ site at a September 1996 workshop on the relationship of species diversity and productivity at the National Center for Ecological Analysis and Synthesis. The BNZ vegetation data base is very good for vascular plants but not complete or consistent for non-vascular plants which may constitute one half to one third of the autotrophs. References cited Kiladis, George N. and Henery F. Diaz. 1986. All plots have metal conduit posts at 25 m intervals. Data bases representing location, species, condition, and diameter have been prepared.
Height data are available for a central transect subsample.
Intervals between photos varies from twice yearly to every 3 and 4 years, depending on the amount of change in the reference stands. The burned white spruce reference stand is the site of a long-term monitoring project of white spruce seedling surviaval and height growth. In 1993 a grid of metal posts was established at 5 m intervals across the hectare to allow all seedlings to be precisely mapped. In 1996 all seedlings in the upper half of the hectare were identified by tree number on a metal tag on a pin flag placed near the seedling. All seedlings have been mapped annually on a 10 by 10 m subplot basis, and a database has been developed including all seedling coordinate locations, condition, height growth and total height.