Molecular Diagnostics of Diffusive Boundary Layers

1995 ◽  
pp. 161-164
Author(s):  
J. M. C. Rawlings ◽  
T. W. Hartquist
Keyword(s):  
Boundary Layers ◽  
Molecular Diagnostics ◽  
Diffusive Boundary

Molecular Diagnostics of Diffusive Boundary Layers

1997 ◽  
Vol 487 (2) ◽  
pp. 672-688 ◽  
Author(s):  
J. M. C. Rawlings ◽  
T. W. Hartquist
Keyword(s):  
Boundary Layers ◽  
Molecular Diagnostics ◽  
Diffusive Boundary

Molecular diagnostics of diffusive boundary layers

1995 ◽  
Vol 233 (1-2) ◽  
pp. 161-164
Author(s):  
J. M. C. Rawlings ◽  
T. W. Hartquist
Keyword(s):  
Boundary Layers ◽  
Molecular Diagnostics ◽  
Diffusive Boundary

scholarly journals Marine diffusive boundary layers at high latitudes

2004 ◽  
Vol 49 (4) ◽  
pp. 934-939 ◽  
Author(s):  
Jason Roberts ◽  
Andrew McMinn
Keyword(s):  
Boundary Layers ◽  
High Latitudes ◽  
Diffusive Boundary

scholarly journals Diffusive Boundary Layers and Ocean Acidification: Implications for Sea Urchin Settlement and Growth

2020 ◽  
Vol 7 ◽  
Author(s):  
Erin P. Houlihan ◽  
Nadjejda Espinel-Velasco ◽  
Christopher E. Cornwall ◽  
Conrad A. Pilditch ◽  
Miles D. Lamare
Keyword(s):  
Ocean Acidification ◽  
Boundary Layers ◽  
Sea Urchin ◽  
Diffusive Boundary

Double-diffusive boundary layers along vertical free surfaces

1992 ◽  
Vol 35 (5) ◽  
pp. 1003-1025 ◽  
Author(s):  
L.G. Napolitano ◽  
A. Viviani ◽  
R. Savino
Keyword(s):  
Boundary Layers ◽  
Free Surfaces ◽  
Diffusive Boundary ◽  
Double Diffusive

scholarly journals Macroalgae contribute to nested mosaics of pH variability in a subarctic fjord

2015 ◽  
Vol 12 (16) ◽  
pp. 4895-4911 ◽  
Author(s):  
D. Krause-Jensen ◽  
C. M. Duarte ◽  
I. E. Hendriks ◽  
L. Meire ◽  
M. E. Blicher ◽  
...  
Keyword(s):  
Ocean Acidification ◽  
Arctic Ocean ◽  
Boundary Layers ◽  
Total Alkalinity ◽  
The Arctic ◽  
Kelp Forests ◽  
Coastal Habitats ◽  
Saturation State ◽  
The Arctic Ocean ◽  
Diffusive Boundary

Abstract. The Arctic Ocean is considered the most vulnerable ecosystem to ocean acidification, and large-scale assessments of pH and the saturation state for aragonite (Ωarag) have led to the notion that the Arctic Ocean is already close to a corrosive state. In high-latitude coastal waters the regulation of pH and Ωarag is, however, far more complex than offshore because increased biological activity and input of glacial meltwater affect pH. Effects of ocean acidification on calcifiers and non-calcifying phototrophs occupying coastal habitats cannot be derived from extrapolation of current and forecasted offshore conditions, but they require an understanding of the regimes of pH and Ωarag in their coastal habitats. To increase knowledge of the natural variability in pH in the Arctic coastal zone and specifically to test the influence of benthic vegetated habitats, we quantified pH variability in a Greenland fjord in a nested-scale approach. A sensor array logging pH, O2, PAR, temperature and salinity was applied on spatial scales ranging from kilometre scale across the horizontal extension of the fjord; to 100 m scale vertically in the fjord, 10–100 m scale between subtidal habitats with and without kelp forests and between vegetated tidal pools and adjacent vegetated shores; and to centimetre to metre scale within kelp forests and millimetre scale across diffusive boundary layers of macrophyte tissue. In addition, we assessed the temporal variability in pH on diurnal and seasonal scales. Based on pH measurements combined with point samples of total alkalinity, dissolved inorganic carbon and relationships to salinity, we also estimated variability in Ωarag. Results show variability in pH and Ωarag of up to 0.2–0.3 units at several scales, i.e. along the horizontal and vertical extension of the fjord, between seasons and on a diel basis in benthic habitats and within 1 m3 of kelp forest. Vegetated intertidal pools exhibited extreme diel pH variability of > 1.5 units and macrophyte diffusive boundary layers a pH range of up to 0.8 units. Overall, pelagic and benthic metabolism was an important driver of pH and Ωarag producing mosaics of variability from low levels in the dark to peak levels at high irradiance generally appearing favourable for calcification. We suggest that productive coastal environments may form niches of high pH in a future acidified Arctic Ocean.

Sign in / Sign up

Export Citation Format

Share Document