Thrust Areas Ecosystem Water Institute Classification Level
Water, Land Use and Ecosystems Water and Climate Water and Society Water Resources Sustainability Springs Wetlands Watersheds Aquifers Lakes Coastal Zone  Water Institute Classification 1  Water Institute Classification 2  Water Institute Classification 3  Water Institute Classification 4

Assessment and validation of wetland biogeochemical indicators.
Goals and Objectives
Biogeochemical processes in the soil and water column drive key ecosystem functions associated with wetland values (e.g. water quality improvement through denitrification, long-term nutrient storage in the organic matter, etc.). Process level measurements reflect the functionality of a wetland and potential impairment due to impacts; however, these measurements are often tedious and costly. Instead, it is possible to develop a relative measure of process rates and potential by evaluating components of biogeochemical cycles that are either end products or sources of material for a given process. In the case of many processes within the carbon (C), nitrogen (N), phosphorus (P) or sulfur (S) cycles, microbial communities mediate the rate and extent of these reactions in soil and the water column. As a result, biogeochemical indicators associated with these processes often respond rapidly to perturbations and are spatially restricted to the impact zone. These indicators will persist over moderate time scales and in the absence of standing water.
Available Outputs

Title: EPA Report Chapter 18: Methods for Evaluating Wetland Condition - Biogeochemical Indicators
Authors: Reddy, K.R., M.W. Clark
Project Lead
Clark, Mark W
Project Participants
Clark, Mark
Additional Participants
Konda Ramesh Reddy
Level 1: WI Affiliated Faculty Project
Water, Land Use and Ecosystems
Grant Award Dates
8/1/2002 to 12/31/2004