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The influence of hydrologic variations onphosphorus cycling and retention in a swamp stream ecosystem

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Date Issued:
Title: The influence of hydrologic variations onphosphorus cycling and retention in a swamp stream ecosystem.
Name(s): Yarbro, Laura A.
Harbor Branch Oceanographic Institute
Type of Resource: text
Genre: Article
Date Issued: 1983
Publisher: Ann Arbor Science
Place of Publication: Ann Arbor, MI
Physical Form: pdf
Extent: 24 p.
Language(s): English
Identifier: FA00007431 (IID)
Note(s): The fluxes and retension of filterable reactive phosphorus (FRP), filterable unreactive phosphorus (FUP), and particulate phosphorus (PP) in a floodplain swamp in eastern North Carolina varied in response to the seasonality of inundation and yearly variations in runoff from the upstream watershed. High runoff and floodplain inundation typically occurred during the cool season when decomposition rates were low. During the flooded period, the floodplain forest floor had a high absorption capacity for runoff-derived FRP that was both temperature and water FRP concentration dependent. The FUP, on the other hand, was released from the forest floor in approximate proportion to the volume of floodwaters. During the warm season, when decomposition rates were faster and standing water concentrations of phosphorus were relatively high, little or no runoff occurred; thus there was no significant loss of phosphorus from the ecosystem. Loss of FUP from the ecosystem and imports of PP were correlated with yearly variations in runoff. The PP exports remained constant during the 2 years of the study; this resulted in large net retention during the year of high runoff. Overall, 30 to 56% of total phosphorus inputs were retained by the swamp ecosystem during the 2 years of study
Florida Atlantic University. Harbor Branch Oceanographic Institute contribution 222
This manuscript is an author version with the final publication available and may be cited as: Yarbro, L. A. (1983). The influence of hydrologic variations on phosphorus cycling and retention in a swamp stream ecosystem. In T. D. Fontaine, & S. M. Bartell (Eds.), Dynamics of lotic ecosystems (pp. 223-245). Ann Arbor, MI: Ann Arbor Science.
Subject(s): Swamp ecology
Phosphorus cycle (Biogeochemistry)
Wetland hydrology
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Host Institution: FAU