EPA Science Inventory

Examining seasonally pulsed detrital transport in the coastal Everglades using a sediment tracing technique

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Citation:

Koch, G. R., S. E. HAGERTHEY, E. Gaiser, AND D. L. Childers. Examining seasonally pulsed detrital transport in the coastal Everglades using a sediment tracing technique. WETLANDS. The Society of Wetland Scientists, McLean, VA, (2013).

Description:

The Comprehensive Everglades Restoration includes plans to restore freshwater delivery to Taylor Slough, a shallow drainage basin in the Southern Everglades, ultimately resulting in increased freshwater flow to the downstream Taylor River estuary. The effect of altered hydrologic regime on the transport dynamics of flocculent, estuarine detritus is not well understood. We utilized a paramagnetic sediment tracer to examine detrital transport in three Taylor River pond/creek pairs during early wet versus late wet transition season estuarine flow conditions. Flux of floc tracer was greatest in the downstream direction during all observations, and was most pronounced during the early wet season, coincident with shallower water depth and faster discharge from northern Taylor River. Floc tracer was more likely to move upriver during the late wet/dry season. Tracer dynamics were also surprisingly site-dependent, with the southernmost pond site showing contrasting results than the two more northern sites, which may highlight the importance of channel geomorphology in regulating hydrologic and sediment transport conditions. Our results indicate that floc transport velocity in Taylor River was approximately 1.74 to 1.78m/day.

Purpose/Objective:

article

Record Details:

Record Type: DOCUMENT (JOURNAL/PEER REVIEWED JOURNAL)
Start Date: 10/01/2012
Completion Date: 10/01/2012
Record Last Revised: 03/11/2014
Record Created: 11/06/2012
Record Released: 11/06/2012
OMB Category: Other
Record ID: 247418

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL CENTER FOR ENVIRONMENTAL ASSESSMENT

WASHINGTON DC

IMMEDIATE OFFICE