Effects of a cattail marsh on sediment and water quality of the Laguna Atascosa National Wildlife Refuge
Published By US Fish and Wildlife Service, Department of the Interior
Issued about 9 years ago
US
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Summary
Description
The drainage known as the Cayo Atascosa transports irrigation return flow water through a cattail marsh and into Laguna Atascosa Lake located in Laguna Atascosa National Wildlife Refuge in Texas. Sediment and water samples were collected to determine the effectiveness of the marsh as a filter for contaminants. Results demonstrate that although organochlorines and metals are present in low concentrations in the sediment, the Cayo Atascosa acts as a sink for these contaminants. In addition, the cattail Typha spp. marsh behaves as a biofilter for excess nutrients from upstream, thus protecting water quality in the Laguna Atascosa.