The effect of flow and morphology on boundary layers in the scleractinians Dichocoenia stokesii (Milne-Edwards and Haime) and Stephanocoenia michilini (Milne-Edwards and Haime).

  title={The effect of flow and morphology on boundary layers in the scleractinians Dichocoenia stokesii (Milne-Edwards and Haime) and Stephanocoenia michilini (Milne-Edwards and Haime).},
  author={D. J. Gardella and Peter J. Edmunds},
  journal={Journal of experimental marine biology and ecology},
  volume={256 2},
  • D. GardellaP. Edmunds
  • Published 31 January 2001
  • Environmental Science
  • Journal of experimental marine biology and ecology

Figures and Tables from this paper

Effects of water flow on growth and energetics of the scleractinian coral Agaricia tenuifolia in Belize

Compared with studies of other species, A. tenuifolia displays an ability to utilize a greater range of habitats and flow speeds, suggesting that it may have specific adaptations that allow it to tolerate very low flow conditions.

Effects of flow and colony morphology on the thermal boundary layer of corals

Temperature microsensor measurements at the surface of illuminated stony corals with uneven surface topography revealed millimetre-scale variations in surface temperature and thermal boundary layer (TBL) that may help understand the patchy nature of coral bleaching within single colonies.

The Small-Scale Flow Field Around Dipsastraea favus Corals

Key biological processes that are related to feeding, growth, and mortality in corals and other benthic organisms, depend on the flow field around them. For example, in the absence of flow, oxygen is

Water flow controls distribution and feeding behavior of two co-occurring coral reef fishes: I. Field measurements

Quantitative behavioral observations suggest that the foraging strategies employed by the two fishes exploit the prevailing hydrodynamic conditions, and A. spinosa, the stronger swimmer of the two, attacks nearly 100% of the time in the water column where it can exploit the higher flux of plankton associated with faster flows, while A. aspera attacks primarily toward the reef surface where currents are likely to be slower and it can exploited more abundant benthic prey.

Intracolony variability in photosynthesis by corals is affected by water flow: role of oxygen flux

The hypothesis that within-colony variation in photosynthesis by corals is related to water flow, and suggests that oxygen flux from the coral may be important, is supported.

Diffusive boundary layers do not limit the photosynthesis of the aquatic macrophyte, Vallisneria americana, at moderate flows and saturating light levels

Hydrodynamic models of mass transport assume that diffusive processes next to the surface limit transport and that there are no biological and chemical processes that control the supply and demand of

Nutrient uptake by seagrass communities and associated organisms: Impact of hydrodynamic regime quantified through field measurements and use of an isotope label

Seagrass communities are composed of numerous organisms that depend on watercolumn nutrients for metabolic processes. The rate at which these organisms remove a nutrient from the water column can be

Localization and Quantification of Carbonic Anhydrase Activity in the Symbiotic Scyphozoan Cassiopea xamachana

Abiotic factors may also influence the distribution of CA and the levels of CA activity in freshly collected symbiotic animals, and the presence and density of zooxanthellae did not always correspond with enzyme activity levels.



Ammonium uptake by coral reefs: Effects of water velocity and surface roughness on mass transfer

To test the hypothesis that ammonium uptake by coral reefs is mass‐transfer limited and to determine the relative effects of water velocity and community roughness on uptake, we measured the rates of

Initial contact, exploration and attachment of barnacle (Balanus amphitrite) cyprids settling in flow

The movement of cyprids in flow appears to be a passive transport process during the initial contact stage of settlement, but an active behavioral response to flow direction and shear stress during later stages of exploration and attachment.

Population Dynamics and Life Histories of Foliaceous Corals

Overall, population cover, size frequencies, and number of colonies were stable over the monitored period from 1977 to 1980, however, individual colonies were in turmoil: of the original 883 colonies, 315 were killed outright and 499 suffered partial colony mortality (injury) at least once during the 3 yr period, so that size was a very poor indicator of age.

In situ measurements of flow effects on primary production and dark respiration in reef corals

Calculations of phototrophic capacity for this species indicate that water motion can enhance the local productivity of the reef and a simple conceptual model of diffusional depletion in the boundary layer over the coral fits the data and accounts for the distribution of zooxanthellae.

Hydromechanical boundary layers over a coral reef

A Chemical Engineering View of Cnidarian Symbioses

Two mathematical models presented explore the relationship of size and shape of contracted and expanded polyps on maximal rates of gas or nutrient exchange: the size/shape spectrum of scleractinian polyps is understandable in terms of how diffusion limits delivery of metabolites to coral and algae.

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