Estuaries

, Volume 17, Issue 2, pp 345–360

Nutrient and metal accumulation in a freshwater tidal marsh

  • Humaira Khan
  • Grace S. Brush
Article

DOI: 10.2307/1352668

Cite this article as:
Khan, H. & Brush, G.S. Estuaries (1994) 17: 345. doi:10.2307/1352668

Abstract

Stratigraphic records from sediment cores collected in a freshwater tidal marsh and in the estuary upstream and downstream from the marsh were used to determine the accumulation of nutrients and trace metals over long time periods. Analysis of pollen and seeds show that the high marsh has formed only within the past 100 yr, following increased sedimentation rates in the area. Variations in nutrient and trace metal accumulations over several decades show that pollutants from agricultural runoff and wastewater discharge are stored to a greater extent in high-marsh than in low-marsh sediments. Greater accumulation rates in the high marsh are probably related to its greater sedimentary organic carbon concentration.

Copyright information

© Estuarine Research Federation 1994

Authors and Affiliations

  • Humaira Khan
    • 1
  • Grace S. Brush
    • 1
  1. 1.Department of Geography and Environmental EngineeringThe Johns Hopkins UniversityBaltimore