B:
Biological Indicators of Watershed Health: Benthic Macroinvertebrates: Aquatic Worms - This web site includes information on aquatic oligochaetes which are generally found in soft mud bottoms, and in high numbers are considered indicators of very poor water quality. [Environmental Protection Agency (EPA)]

Botany - Major NBII website on botany linking to USGS and non-USGS websites on botanical science, paleobotany, plant functions, species, applied plant science, gardening, collections and organizations, botany for kids and teachers, and references [Department of the Interior, U.S. Geological Survey (USGS), National Biological Information Infrastructure]

D:
Drilling Waste Management Information System - Provides technical and regulatory information on practices for managing drilling muds, cuttings and wastes [Department of Energy (DOE), Argonne National Laboratory (ANL), National Energy Technology Laboratory (NETL)]

S:
Systemic Botany and Mycology Laboratory - Research into the systemics of fungi and vascular plants [Department of Agriculture (USDA), Agriculture Research Service (ARS), Beltsville Agricultural Research Center (BARC), Plant Sciences Institute (PSI)]