Episodic nutrient transport to Florida coral reefs

  title={Episodic nutrient transport to Florida coral reefs},
  author={James J. Leichter and Hannah Louise Stewart and Steven L. Miller},
  journal={Limnology and Oceanography},
This study documents the changes in nutrient fluxes associated with internal tidal bores arriving on Florida Keys coral reefs and points to biological use of subthermocline nitrate brought onshore by this mechanism. Internal bores on Conch Reef, Florida Keys, are associated with concentrations of 1.0–4.0 µmol L−1 nitrate (NO3− ) and 0.1–0.3 µmol L−1 soluble reactive phosphate (SRP) and onshore flow velocities of 0.1–0.3 m s−1. The arrival of internal bores causes 10–40 fold increases in… 

Figures and Tables from this paper

Nutrient fluxes into an isolated coral reef atoll by tidally driven internal bores

Scott Reef is a remote yet biodiverse coral reef atoll, rising from depths > 1000 m on the edge of the continental shelf of northwestern Australia. An intensive 2‐week field study was conducted to

Particulate nutrient fluxes over a fringing coral reef: relevant scales of phytoplankton production and mechanisms of supply

Seasonal observations of phytoplankton uptake at Ningaloo Reef, Western Australia, reinforce the importance of particulate organic nitrogen (PON) and carbon (POC) in reef nutrient budgets and identify wave action and the dynamics of regional currents as important factors determining plankton supply to the reef.

Nitrogen and oxygen isotopic signatures of subsurface nitrate seaward of the Florida Keys reef tract

Hydrographic and nutrient structure and the nitrogen and oxygen isotopic compositions (d15N and d18O) of the nitrate pool seaward of the Florida Keys reef tract were measured in Summer 2003. Nitrate

Tidal and seasonal forcing of dissolved nutrient fluxes in reef communities

Abstract. Benthic fluxes of dissolved nutrients in reef communities are controlled by oceanographic forcing, including local hydrodynamics and seasonal changes in oceanic nutrient supply. Up to a

Nutrient Mass Flux between Florida Bay and the Florida Keys National Marine Sanctuary

There is a net discharge of water and nutrients through Long Key Channel from Florida Bay to the Florida Keys National Marine Sanctuary (FKNMS). There has been speculation that this water and its

An estimate of diapycnal nutrient fluxes to the euphotic zone in the Florida Straits

A recent hydrographic survey of the Florida Current at 27°N revealed an enhanced upward flux of nutrients along the Florida coast, and the diapycnal nutrient fluxes declined rapidly offshore as a result of decreasing vertical gradients of nutrient concentration.

Biophysical drivers of coral trophic depth zonation

The results show that fine-scale intra-island hydrographic regimes and hydrodynamic connectivity between reef habitats contribute to explaining the context specific nature of coral trophic depth zonation in shallow reef ecosystems.

Nitrogen enrichment, altered stoichiometry, and coral reef decline at Looe Key, Florida Keys, USA: a 3-decade study

Improved management of water quality at the local and regional levels could moderate N inputs and maintain more balanced N:P stoichiometry, thereby reducing the risk of coral bleaching, disease, and mortality under the current level of temperature stress.

Nitrogen and phosphorus uptake rates of different species from a coral reef community after a nutrient pulse

The results support the often proposed, but rarely tested, assumption that turf algae and opportunistic macroalgae primarily benefit from episodic inputs of nutrients to coral reefs.



Pulsed delivery of subthermocline water to Conch Reef (Florida Keys) by internal tidal bores

Internal tidal bores generated by breaking internal waves cause dramatic, high-frequency variation in temperature, salinity, water velocities, and concentration of chlorophyll a on Conch Reef,

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

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

Nutrient thresholds for bottom‐up control of macroalgal blooms on coral reefs in Jamaica and southeast Florida

This study tested the hypothesis that because the phase shift on reefs in Jamaica and southeast Florida involved frondose macroalgae, bottom-up control via nutrient enrichment must be a causal factor, and high seawater DIN : SRP ratios, alkaline phosphatase activity, and tissue C : P and N : P ratios suggested SRP limitation of productivity compared to lower values of these variables on siliciclastic reefs in Florida that suggested DIN limitation.

Upwelling as a source of nutrients for the Great Barrier Reef ecosystems: a solution to Darwin's question?

The Great Barrier Reef shelf ecosystem is examined for nutrient enrichment from within the seasonal thermocline of the adjacent Coral Sea using moored current and temperature recorders and chemical

Eutrophication and coral reefs—some examples in the Great Barrier Reef lagoon

Cross-continental shelf trends in coral δ15N on the Great Barrier reef : further consideration of the reef nutrient paradox

Potential sources of nitrogen for the scleractinian coral Porites lobata in a transect across the central region of the Great Barrier Reef, Australia are investigated, and the response curve of the δ 15 N was found to be curvilinear, yielding a highly significant parabolic relationship with distance from shore.

Macroalgae, nutrients and phase shifts on coral reefs: scientific issues and management consequences for the Great Barrier Reef

  • L. McCook
  • Environmental Science
    Coral Reefs
  • 1999
It is concluded that nutrient overloads can contribute to reef degradation, but that they are unlikely to lead to phase shifts simply by enhancing algal growth rates and hence allowing overgrowth of corals, unless herbivory is unusually or artificially low.

Effects of water velocity on phosphate uptake in coral reef-hat communities

To determine a Stanton number (Stm, a dimensionless number giving the ratio of uptake rate to the rate of advection of the substance past the uptake surface) for a reef-flat community without the

Effects of nutrient loading on mass‐transfer rates to a coral‐reef community

These effects to be caused by decreases in the rate constants for the real surface reactivity, S,.

Resource partitioning by reef corals as determined from stable isotope composition

The pattern of resource partitioning vs depth by corals collected in February 1983 from Jamaica and the Red Sea was determined and data suggest that carbon is translocated at all depths and that deep-water corals draw significantly on allocthonous sources of carbon.