Archive | Overview Reports

general background and sampling procedures

Relevance of Biodiversity to the Sustainability of Agricultural Systems: 1998 CRIS Report

Sampling of microbes, nematodes and soil insects was conducted in farm-sized plots of various Midwestern agroecosystems. At two locations over three years the following four cropping systems were compared: continuous corn, corn/soybean, corn/soybean/wheat-red clover and rotationally grazed pasture…more Author: Joshua Posner More »

NRI File Glossary, 1998

The NRI data on the biodiversity of soil organisms was collected in 1995, 1996 and 1997. The team developed the following sampling plan: 1) 16 (out of 50) quadrats (0.78 m wide by 3.13 m long) were randomly selected from each of the plots to be monitored; 2) eight times a season in [...] More »

The Relevance of Biodiversity to the Sustainability of Agricultural Systems: A Progress Report

The first objective of this project was to develop efficient sampling methodology to describe a broad spectrum of organisms in a wide range of agricultural systems of the WICST experiment. The second was to develop indices, or find indicator species, that characterize the biodiversity of that broad spectrum of organisms. The taxonomic assessment [...] More »

Narrative on NRI Soil Biodiversity Project - 1996 CRIS Report

In 1996 we completed the second year of field sampling. Analysis of 1995 Arlington data indicates that for several of the soil organisms monitored, taking 3 to 6 samples per plot, and bulking them, will give the lowest standard error for the effort expended. Analysis of sampling date has indicated that [...] More »

Preliminary Report on Developing Sampling Proceedures and Biodiversity Indices Soil Biodiversity Project, 1996

Do cropping systems that vary in complexity have different degrees of biodiversity? Our multidisciplinary team has been working to address this question as it applies to cropping systems common in Wisconsin. Previous studies addressing this issue are of limited value because they focused on a single taxon, had inadequate sampling procedures (i.e., a [...] More »

Relevance of Biodiversity to the Sustainability of Agricultural Systems

Biodiversity is widely considered to be an important measure of ecosystem health, underpinning ecosystem structure, function, and sustainability. Agricultural systems comprise the majority of all terrestrial ecosystems; thus, agriculture may be especially important to maintaining biodiversity. Past research has produced conflicting evidence on whether biodiversity is key to agricultural sustainability, and which agricultural [...] More »

NRI Soil Biodiversity Project Sampling and Data Collection

A protocol for collecting soil microbial biodiversity from the WICST plots including number of samples, schedule of sampling and field procedures. Author: Jon Baldock More »