Water column and sediment nitrogen and phosphorus distribution patterns in the Florida Keys, USA

@article{Szmant2005WaterCA,
  title={Water column and sediment nitrogen and phosphorus distribution patterns in the Florida Keys, USA},
  author={Alina M. Szmant and Andrew Forrester},
  journal={Coral Reefs},
  year={2005},
  volume={15},
  pages={21-41}
}
Measurements of the distribution patterns of nutrients (ammonium, nitrate, orthophosphate, total N and total P) and chlorophyll concentrations were conducted under an interdisciplinary program known as SEAKEYS, initiated because of concern that anthropogenic nutrients may be impacting Florida coral reefs. Samples were collected along transects that extended from passes or canals to 0.5 km offshore of the outermost reefs. Seven of the transects were either in the Biscayne National Park (BNP) and… Expand
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References

SHOWING 1-10 OF 100 REFERENCES
Nutrient inputs from the watershed and coastal eutrophication in the Florida keys
Widespread use of septic tanks in the Florida Keys increase the nutrient concentrations of limestone groundwaters that discharge into shallow nearshore waters, resulting in coastal eutrophication.Expand
Experimental evidence for nutrient limitation of seagrass growth in a tropical estuary with restricted circulation
TLDR
Tissue nutrient content and nitrogen fixation assays suggest that phosphorus availability limits seagrass growth in unenriched conditions, but that nitrogen becomes limiting with the addition of bird excrement. Expand
Process Influencing Water Column Nutrient Characteristics and Phosphorus Limitation of Phytoplankton Biomass in Florida Bay, FL, USA:Inferences from Spatial Distributions
Abstract The concentrations of nutrients, dissolved and particulate organic matter, salinity and chlorophyll-α in the water column were measured over the period of June 1989 to August 1990 at aExpand
Eutrophication and trophic state classification of seagrass communities in the Florida Keys
Seagrass communities in the Florida Keys are receiving increased nutrient loadings from a variety of land-based human activities that are accelerating coastal eutrophication, We assessedExpand
Relationships between porewater nutrients and seagrasses in a subtropical carbonate environment
TLDR
The hypothesis that sediment porewaters are the most important source of nutrients for seagrass growth is supported in this subtropical carbonate environment, as the availability of phosphorus in the porewater limits the development, and controls the species composition, of seagRass beds. Expand
Phosphorus and nitrogen in coral reef sediments
The occurrence of P and N in the sediments has been investigated on Davies Reef in the central region of the Great Barrier Reef Complex. Concentrations of inorganic P and N in the water were typicalExpand
Interstitial water and sediment chemistry of two cores from Florida Bay
ABSTRACT The interstitial water and sediment chemistry of cores from two different environments in Florida Bay, mangrove swamp and submerged mud bank, have been analyzed. The interstitial waterExpand
Evidence for phosphorus limitation in carbonate sediments of the seagrass
TLDR
The finding of high root biomass relative to leaf biomass in these seagrass beds corroborates this evidence by depicting a method of plant adaptation that increases nutrient absorptive root surface area and establishes the likelihood that plant acquisition of phosphorus was limited. Expand
Dissolved nutrient fluxes from the nearshore sediments of Bowling Green Bay, central Great Barrier Reef Lagoon (Australia)
The fluxes of dissolved inorganic N, P, and Si from the nearshore sediments of the Great Barrier Reef Lagoon are significantly lower than those reported from sediments in temperate regions at similarExpand
Nutrient couplings between on-site sewage disposal systems, groundwaters, and nearshore surface waters of the Florida Keys
We performed a one-year study to determine the effects of on-site sewage disposal systems (OSDS, septic tanks) on the nutrient relations of limestone groundwaters and nearshore surface waters of theExpand
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