Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Principal coordinate analysis (PCoA) showing the clustering of communities based on b-diversity. The nodes are shaped according to the types of substances, including layer manure (triangle), layer manure fertilizer (round), and soil (square). The color from light to dark indicates the scale of the farm from small to large, respectively.
