scholarly journals Autonomous Observation of Seasonal Carbonate Chemistry Dynamics in the Mid‐Atlantic Bight

2020 ◽  
Vol 125 (11) ◽  
Author(s):  
Elizabeth K. Wright‐Fairbanks ◽  
Travis N. Miles ◽  
Wei‐Jun Cai ◽  
Baoshan Chen ◽  
Grace K. Saba
Keyword(s):  
Carbonate Chemistry ◽  
Chemistry Dynamics

scholarly journals Controls on pH in surface waters of northwestern European shelf seas

2014 ◽  
Vol 11 (1) ◽  
pp. 943-974 ◽  
Author(s):  
V. M. C. Rérolle ◽  
M. Ribas-Ribas ◽  
V. Kitidis ◽  
I. Brown ◽  
D. C. E. Bakker ◽  
...  
Keyword(s):  
Biological Activity ◽  
Surface Water ◽  
Irish Sea ◽  
Carbonate Chemistry ◽  
Ph Distribution ◽  
European Shelf ◽  
Shelf Seas ◽  
Water Ph ◽  
The Impact ◽  
Chemistry Dynamics

Abstract. We present here a high resolution surface water pH dataset obtained in the Northwest European shelf seas in summer 2011. This is the first time that pH has been measured at such a high spatial resolution (10 measurements h–1) in this region. The aim of our paper is to investigate the carbonate chemistry dynamics of the surface water using pH and ancillary data. The main processes controlling the pH distribution along the ship's transect, and their relative importance, were determined using a statistical approach. The study highlights the impact of biological activity, temperature and riverine inputs on the carbonate chemistry dynamics of the shelf seas surface water. For this summer cruise, the biological activity formed the main control of the pH distribution along the cruise transect. Variations in chlorophyll and nutrients explained 29% of the pH variance along the full transect and as much as 68% in the northern part of the transect. In contrast, the temperature distribution explained ca. 50% of the pH variation in the Skagerrak region. Riverine inputs were evidenced by high dissolved organic carbon (DOC) levels in the Strait of Moyle (northern Irish Sea) and the southern North Sea with consequent remineralisation processes and a reduction in pH. The DOC distribution described 15% of the pH variance along the full transect. This study highlights the high spatial variability of the surface water pH in shelf seawaters where a range of processes simultaneously impacts the carbonate chemistry.

scholarly journals Carbonate System Parameters of an Algal-dominated Reef along West Maui

2018 ◽  
Author(s):  
Nancy G. Prouty ◽  
Kimberly K. Yates ◽  
Nathan Smiley ◽  
Chris Gallagher ◽  
Olivia Cheriton ◽  
...  
Keyword(s):  
Coral Reef ◽  
Reef Flat ◽  
Sampling Period ◽  
Total Alkalinity ◽  
Carbonate Chemistry ◽  
Diurnal Variability ◽  
Carbon Chemistry ◽  
Sources Of Pollution ◽  
Seawater Ph ◽  
Chemistry Dynamics

Abstract. Constraining coral reef metabolism and carbon chemistry dynamics are fundamental for understanding and predicting reef vulnerability to rising coastal CO2 concentrations and decreasing seawater pH. However, few studies exist along reefs occupying densely inhabited shorelines with known input from land-based sources of pollution. The shallow coral reefs off Kahekili, West Maui, are exposed to nutrient-enriched, low-pH submarine groundwater discharge (SGD) and are particularly vulnerable to the compounding stressors from land-based sources of pollution and lower seawater pH. To constrain the carbonate chemistry system, nutrients and carbonate chemistry were measured along the Kahekili reef flat every 4 h over a 6-d sampling period in March 2016. Abiotic process – primarily SGD fluxes – controlled the carbonate chemistry adjacent to the primary SGD vent site, with nutrient-laden freshwater decreasing pH levels and favoring undersaturated aragonite saturation (Ωarag) conditions. In contrast, diurnal variability in the carbonate chemistry at other sites along the reef flat was driven by reef community metabolism. Superimposed on the diurnal signal was a transition during the second sampling period to a surplus of total alkalinity (TA) and dissolved inorganic carbon (DIC) compared to ocean end-member TA and DIC measurements. A shift from net community production and calcification to net respiration and carbonate dissolution was identified. This transition occurred during a period of increased SGD-driven nutrient loading, lower wave height, and reduced current speeds. This detailed study of carbon chemistry dynamics highlights the need to incorporate local effects of nearshore oceanographic processes into predictions of coral reef vulnerability and resilience.

Carbonate Chemistry Dynamics of Surface Waters in the Northern Gulf of Mexico

2010 ◽  
Vol 16 (3) ◽  
pp. 337-351 ◽  
Author(s):  
Nina Keul ◽  
John W. Morse ◽  
Rik Wanninkhof ◽  
Dwight K. Gledhill ◽  
Thomas S. Bianchi
Keyword(s):  
Gulf Of Mexico ◽  
Surface Waters ◽  
Carbonate Chemistry ◽  
Northern Gulf Of Mexico ◽  
Chemistry Dynamics

Carbonate chemistry dynamics in Bering Strait and the Chukchi Sea

2002 ◽  
Vol 55 (1-2) ◽  
pp. 77-94 ◽  
Author(s):  
I.I Pipko ◽  
I.P Semiletov ◽  
P.Ya Tishchenko ◽  
S.P Pugach ◽  
J.P Christensen
Keyword(s):  
Chukchi Sea ◽  
Bering Strait ◽  
Carbonate Chemistry ◽  
Chemistry Dynamics

Carbonate chemistry dynamics and biological processes along a river–sea gradient (Gulf of Trieste, northern Adriatic Sea)

2016 ◽  
Vol 155 ◽  
pp. 35-49 ◽  
Author(s):  
Gianmarco Ingrosso ◽  
Michele Giani ◽  
Tamara Cibic ◽  
Ana Karuza ◽  
Martina Kralj ◽  
...  
Keyword(s):  
Adriatic Sea ◽  
Biological Processes ◽  
Carbonate Chemistry ◽  
Northern Adriatic Sea ◽  
Northern Adriatic ◽  
Gulf Of Trieste ◽  
Chemistry Dynamics

scholarly journals Seasonal Carbonate Chemistry Dynamics on Southeast Florida Coral Reefs: Localized Acidification Hotspots From Navigational Inlets

2019 ◽  
Vol 6 ◽  
Author(s):  
Ian C. Enochs ◽  
Derek P. Manzello ◽  
Paul R. Jones ◽  
S. Jack Stamates ◽  
Thomas P. Carsey
Keyword(s):  
Coral Reefs ◽  
Carbonate Chemistry ◽  
Chemistry Dynamics

scholarly journals Carbonate system parameters of an algal-dominated reef along West Maui

2018 ◽  
Vol 15 (8) ◽  
pp. 2467-2480 ◽  
Author(s):  
Nancy G. Prouty ◽  
Kimberly K. Yates ◽  
Nathan Smiley ◽  
Chris Gallagher ◽  
Olivia Cheriton ◽  
...  
Keyword(s):  
Coral Reef ◽  
Reef Flat ◽  
Sampling Period ◽  
Carbonate Chemistry ◽  
Net Community Production ◽  
Carbon Chemistry ◽  
Sources Of Pollution ◽  
Seawater Ph ◽  
Chemistry Dynamics ◽  
Community Production

Abstract. Constraining coral reef metabolism and carbon chemistry dynamics are fundamental for understanding and predicting reef vulnerability to rising coastal CO2 concentrations and decreasing seawater pH. However, few studies exist along reefs occupying densely inhabited shorelines with known input from land-based sources of pollution. The shallow coral reefs off Kahekili, West Maui, are exposed to nutrient-enriched, low-pH submarine groundwater discharge (SGD) and are particularly vulnerable to the compounding stressors from land-based sources of pollution and lower seawater pH. To constrain the carbonate chemistry system, nutrients and carbonate chemistry were measured along the Kahekili reef flat every 4 h over a 6-day sampling period in March 2016. Abiotic process – primarily SGD fluxes – controlled the carbonate chemistry adjacent to the primary SGD vent site, with nutrient-laden freshwater decreasing pH levels and favoring undersaturated aragonite saturation (Ωarag) conditions. In contrast, diurnal variability in the carbonate chemistry at other sites along the reef flat was driven by reef community metabolism. Superimposed on the diurnal signal was a transition during the second sampling period to a surplus of total alkalinity (TA) and dissolved inorganic carbon (DIC) compared to ocean endmember TA and DIC measurements. A shift from positive net community production and positive net community calcification to negative net community production and negative net community calcification was identified. This transition occurred during a period of increased SGD-driven nutrient loading, lower wave height, and reduced current speeds. This detailed study of carbon chemistry dynamics highlights the need to incorporate local effects of nearshore oceanographic processes into predictions of coral reef vulnerability and resilience.

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