Date of Award
Spring 1986
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Biological Sciences
Program/Concentration
Biology
Committee Director
Frank P. Day, Jr.
Committee Member
Gerald Levy
Committee Member
James F. Matta
Call Number for Print
Special Collections LD4331.B46 M43
Abstract
Budgets and models of organic matter dynamics were developed for one mesic and three seasonally flooded plant communities in the Dismal Swamp. Components included aboveground parts, belowground parts, litter and soil organic matter (SOM).
Net primary- production was significantly greater on them flooded sites. Comparisons show that the Dismal Swamp is highly productive despite relatively low nutrient inputs.
Budget calculations showed that over 65% of the total input to SOM comes from roots. Leaves contributed about 70% of the aboveground inputs.
The model predicted that species composition, aboveground biomass and turnover rates on the cedar site will become quite similar to the maple-gum site. SOM decreased on the cedar and maple-gum sites but increased on the cypress site, converging at about 24,000 g m-2 .
Results showed that roots are the most dynamic and sensitive components of the system. The Dismal Swamp may be structurally and functionally more homogeneous by the next century.
Rights
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ISBN
10.25777/5exa-2891
Recommended Citation
Megonigal, J. P.. "Organic Matter Budgets and Models for Four Plant Communities in the Great Dismal Swamp" (1986). Master of Science (MS), Thesis, Biological Sciences, Old Dominion University, https://digitalcommons.odu.edu/biology_etds/378