Shifting N and P limitation along a north-south gradient of mangrove estuaries in South Florida
- 156 Downloads
A multivariate statistical analysis was applied to a 10 year, multiparameter data set in an effort to describe the spatial dependence and inherent variation of water quality patterns in the mangrove estuaries of Ten Thousand Islands – Whitewater Bay area. Principal component analysis (PCA) of 16 water quality parameters collected monthly resulted in five groupings, which explained 72.5% of the variance of the original variables. The “Organic” component (PCI) was composed of alkaline phosphatase activity, total organic nitrogen, and total organic carbon; the “Dissolved Inorganic N” component (PCII) contained NO3−, NO2−, and NH4+; the “Phytoplankton” component (PCIII) was made up of total phosphorus, chlorophyll a, and turbidity; dissolved oxygen and temperature were inversely related (PCIV); and salinity and soluble reactive phosphorus made up PCV. A cluster analysis of the mean and SD of PC scores resulted in the spatial aggregation of the 47 fixed stations into six classes having similar water quality, which we defined as: Mangrove Rivers, Whitewater Bay, Gulf Islands, Coot Bay, Blackwater River, and Inland Waterway. Marked differences in physical, chemical, and biological characteristics among classes were illustrated by this technique. Comparison of medians and variability of parameters among classes allowed large scale generalizations as to underlying differences in water quality in these regions. A strong south to north gradient in estuaries from high N - low P to low N - high P was ascribed to marked differences in landuse, freshwater input, geomorphology, and sedimentary geology along this tract. The ecological significance of this gradient discussed along with potential effects of future restoration plans.
Keywordswater quality nutrient limitation mangrove estuary Ten Thousand Islands Whitewater Bay
Unable to display preview. Download preview PDF.
- Bosence, D. 1989Biogenic carbonate production in Florida BayBulletin of Marine Science44419433Google Scholar
- Boto, K. G., Wellington, J. T. 1988Seasonal variations in concentration and fluxes of dissolved organic and inorganic materials in a tropical, tidally-dominated, mangrove waterwayMarine Ecology Progress Series50151160Google Scholar
- Boyer, J. N., 2005. FY2004 Annual Report of the South Florida Coastal Water Quality Monitoring Network. SFWMD/SERC Cooperative Agreement #C-15397. SERC Tech. Rep. T-265. http://serc.fiu.edu/wqmnetwork/SFWMD-CD/Data/2004CWQMN.pdf.
- Browder, J. A., J. Tashiro, E. Coleman-Duffie, A. Rosenthal & J. D. Wang, 1989. Documenting estuarine impactsof freshwater flow alterations and evaluating proposed remedies. In Kusler, J. A. & S. Daly (eds), Wetlands and River Corridor Management. Proceedings of an International Symposium of the Association of Wetland Managers, pp. 300–312.Google Scholar
- Childers, D. L., J. N. Boyer, S. E. Davis, C. J. Madden, D. T. Rudnick & F. H. Sklar, 2006. Relating precipitation and water management to nutrient concentrations in the oligotrophic “upside-down” estuaries of the Florida Everglades. Limnology and Oceanography 51: 602–616.Google Scholar
- Christian, R. R., Boyer, J. N., Stanley, D. W., Rizzo, W. M. 1991Multi-year distribution patterns of nutrients in the Neuse River Estuary, North CarolinaMarine Ecology Progress Series71259274Google Scholar
- Garcia, H. E., Gordon, L. I 1992Oxygen solubility in seawater: Better fitting equationsLimnology and Oceanography3713071312Google Scholar
- Gleason, P. J., A. D. Cohen, H. K. Brooks, P. Stone, R. Godrick, W. G. Smith & W. Spackman, 1984. The environmental significance of Holocene sediments from the Everglades and saline tidal plain. In Gleason, P. L. (ed.), Environments of South Florida: Present and Past II, Miami Geological Society, pp. 297–351.Google Scholar
- Scholl, D. W. 1963Sedimentation in modern coastal swamps, southwestern FloridaBulletin of the American Association of Petroleum Geologists4715811603Google Scholar
- Smith, V. H. 1990Nitrogen, phosphorus, and nitrogen fixation in lacustrine and estuarine ecosystemsLimnology and Oceanography3518521858Google Scholar
- South Florida Water Management District, 1994. Hydrologic restoration of southern Golden Gate Estates: quarterly subgrant performance report No. 1. SFWMD, Big Cypress Basin Office, Naples, Florida.Google Scholar
- Strickland, J. D. H., Parsons, T. R. 1972A practical handbook of seawater analysisBulletin of the Fisheries Research Board of Canada167107112Google Scholar
- Tabb, D. C., D. L. Dubrow & R. B. Manning, 1962. The Ecology of Northern Florida Bay and Adjacent Estuaries. Technical Series No. 39, Board of Conservation State of Florida, Miami, FL.Google Scholar
- Van Arman, J., 1984. South Florida’s estuaries. In Gleason, P. L. (ed.), Environments of South Florida: Present and Past II, Miami Geological Society, pp. 79–96.Google Scholar