Influence of Hydrologic Loading Rate on Phosphorus Retention and Ecosystem Productivity in Created Wetlands

Four 2- to 3-ha constructed freshwater riparian wetlands in Lake County, Illinois, were subjected to two hydrologic regimes of pumped river water to simulate nonpoint source pollution. The experimental wetlands at the Des Plaines River Wetland Demonstration Project were designed to develop and test...

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Bibliographic Details
Main Authors: Mitsch, William J, Cronk, Julie K
Format: Report
Language:English
Subjects:
BANKS(WATERWAYS)
CONSTRUCTION
DEMONSTRATIONS
DYNAMICS
Ecology
ECOSYSTEMS
FLOOD CONTROL
FLOW
FRESH WATER
HABITATS
HYDROLOGY
Hydrology, Limnology and Potamology
ILLINOIS
LPN-WRP-RE-6
MANAGEMENT
METABOLISM
METHODOLOGY
PHOSPHORUS
POLLUTION
PRODUCTIVITY
PUMPING
RESOURCE MANAGEMENT
RETENTION(GENERAL)
RIVERS
SHORT RANGE(TIME)
SOURCES
TEST AND EVALUATION
WATER
Water Pollution and Control
WATER QUALITY
WETLANDS
WILDLIFE
WUWRP32761
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Summary:Four 2- to 3-ha constructed freshwater riparian wetlands in Lake County, Illinois, were subjected to two hydrologic regimes of pumped river water to simulate nonpoint source pollution. The experimental wetlands at the Des Plaines River Wetland Demonstration Project were designed to develop and test wetland design principles, construction methods, and management programs needed to create and maintain wetlands for the purposes of water quality management, flood control, and fish and wildlife habitat. High-flow wetlands (HFW) with short retention times received 34 to 38 cm of river water per week, and low-flow wetlands (LFW) with high retention times received 10 to 15 cm per week. This report summarizes research results for phosphorus dynamics and retention, macrophyte development, periphyton productivity, and overall water column metabolism through 1992. All of these functions were hypothesized to be related to hydrologic conditions.