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  • PANGAEA  (4)
  • American Geophysical Union  (3)
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Keywords
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Years
  • 1
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    Seawater carbonate chemistry and growth of Atlantic surfclam (Spisula solidissima) in laboratory experiments (2022)
    PANGAEA
    Details
    Publication Date: 2024-03-15
    Description: A dynamic energy budget (DEB) model integrating pCO2 was used to describe ocean acidification (OA) effects on Atlantic surfclam, Spisula solidissima, bioenergetics. Effects of elevated pCO2 on ingestion and somatic maintenance costs were simulated, validated, and adapted in the DEB model based upon growth and biological rates acquired during a 12-week laboratory experiment. Temperature and pCO2 were projected for the next 100 years following the intergovernmental panel on climate change representative concentration pathways scenarios (2.6, 6.0, and 8.5) and used as forcing variables to project surfclam growth and reproduction. End-of-century water warming and acidification conditions resulted in simulated faster growth for young surfclams and more energy allocated to reproduction until the beginning of the 22nd century when a reduction in maximum shell length and energy allocated to reproduction was observed for the RCP 8.5 scenario.
    Keywords: Alkalinity, total; Animalia; Aragonite saturation state; Benthic animals; Benthos; Bicarbonate ion; Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Containers and aquaria (20-1000 L or 〈 1 m**2); Experiment day; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Height; Laboratory experiment; Length; Mollusca; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; Replicate; Salinity; Shell, dry mass; Single species; Species, unique identification; Species, unique identification (Semantic URI); Species, unique identification (URI); Spisula solidissima; Temperate; Temperature, water; Tissue, dry mass; Type; Width
    Type: Dataset
    Format: text/tab-separated-values, 15872 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Seawater carbonate chemistry and the metabolic response of thecosome pteropods from the North Atlantic and North Pacific oceans (2016)
    PANGAEA
    Details
    Publication Date: 2024-03-15
    Description: As anthropogenic activities directly and indirectly increase carbon dioxide (CO2) and decrease oxygen (O2) concentrations in the ocean system, it becomes important to understand how different populations of marine animals will respond. Water that is naturally low in pH, with a high concentration of carbon dioxide (hypercapnia) and a low concentration of oxygen, occurs at shallow depths (200–500 m) in the North Pacific Ocean, whereas similar conditions are absent throughout the upper water column in the North Atlantic. This contrasting hydrography provides a natural experiment to explore whether differences in environment cause populations of cosmopolitan pelagic calcifiers, specifically the aragonitic-shelled pteropods, to have a different physiological response when exposed to hypercapnia and low O2. Using closed-chamber end-point respiration experiments, eight species of pteropods from the two ocean basins were exposed to high CO2 (  800 µatm) while six species were also exposed to moderately low O2 (48 % saturated, or  130 µmol/kg) and a combined treatment of low O2/high CO2. None of the species tested showed a change in metabolic rate in response to high CO2 alone. Of those species tested for an effect of O2, only Limacina retroversa from the Atlantic showed a response to the combined treatment, resulting in a reduction in metabolic rate. Our results suggest that pteropods have mechanisms for coping with short-term CO2 exposure and that there can be interactive effects between stressors on the physiology of these open ocean organisms that correlate with natural exposure to low O2 and high CO2. These are considerations that should be taken into account in projections of organismal sensitivity to future ocean conditions.
    Keywords: Alkalinity, total; Animalia; Aragonite saturation state; Bicarbonate ion; Bottles or small containers/Aquaria (〈20 L); Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Cavolinia inflexa; Clio pyramidata; Cuvierina atlantica; Cuvierina pacifica; Diacria trispinosa; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Laboratory experiment; Limacina helicina; Limacina retroversa; Mass, standard error; Mollusca; North Atlantic; North Pacific; OA-ICC; Ocean Acidification International Coordination Centre; Open ocean; Oxygen; Oxygen consumption, per mass; Oxygen consumption, standard error; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; Replicates; Respiration; Salinity; Single species; Species, unique identification; Species, unique identification (Semantic URI); Species, unique identification (URI); Styliola subula; Temperate; Temperature, water; Treatment; Type; Wet mass; Zooplankton
    Type: Dataset
    Format: text/tab-separated-values, 800 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    Inorganic carbon outwelling from mangroves and saltmarshes drives coastal acidification (2024)
    PANGAEA
    Details
    Publication Date: 2024-05-22
    Description: Concentrations of alkalinity (TA) and dissolved inorganic carbon (DIC) in porewater as well as in surface water measured during timeseries (fixed location) and spatial surveys (fixed time period) were compiled from 38 mangrove- and 8 saltmarsh-dominated creeks and estuaries. We used data from creeks that were predominantly surrounded by mangrove or saltmarsh vegetation and with minimal confounding factors such as mixed vegetation or large catchments. These creeks were located in either pristine or anthropologically impacted estuaries or coastal areas. Anthropologically impacted areas were defined as areas that were affected by nearby urban or agricultural activities, potentially delivering pollutants, e.g., sewage or fertilizers, to creeks. We also included pristine mangrove- and saltmarsh dominated estuaries. When available, environmental parameters were also recorded, i.e., season, salinity, temperature, pH, dissolved oxygen (DO), water level, porewater tracer radon (222Rn), partial pressure of carbon dioxide (pCO2), dissolved organic carbon (DOC), particulate organic carbon (POC), nitrate and nitrite (NOx), ammonium (NH4), total nitrogen (TN), phosphate (PO4), and total phosphorus (TP). Methods used to determine parameters are explained in each corresponding reference.
    Keywords: According to source references; Alkalinity; Alkalinity, total; Alkalinity, total/Carbon, inorganic, dissolved ratio; Ammonium; Australia; Australia_M29; Australia_M30; Australia_M31; Australia_M32; Australia_M33; Australia_M34; Australia_M35; Australia_M36; Australia_M37; Australia_M38; blue carbon; Boron hydroxide; Brazil; Brazil_M18; Brazil_M19; Brazil_M20; Brazil_M21; CA_USA_S02; Carbon, inorganic, dissolved; Carbon, organic, dissolved; Carbon, organic, particulate; Carbon dioxide, partial pressure; China; China_M03; China_S06; China_S07; China_S08; Condition; Country; DATE/TIME; Date/Time local; Dissolved inorganic carbon; Ecosystem; Ecuador; Ecuador_M22; Event label; French_Guiana_M17; French Guiana; GA_USA_S04; Identification; India; India_M04; India_M05; India_M06; India_M07; India_M08; India_M09; Japan; Japan_M02; Kenya; Kenya_M23; Kenya_M24; LATITUDE; LONGITUDE; MA_USA_S01; Madagascar; Madagascar_M28; mangroves; Nitrogen, total; Nitrogen oxide; Oxygen, dissolved; Palau; Palau_M15; Palau_M16; Papua_New_Guinea_M25; Papua New Guinea; pH; Philippines; Philippines_M10; Phosphate; Phosphorus, total; Radon-222; Reference/source; Salinity; saltmarshes; Sample type; SC_USA_S03; Season; Site; Spain; Spain_S05; Tanzania; Tanzania_M26; Tanzania_M27; Temperature, water; Thailand; Thailand_M14; USA; USA_M01; Vietnam; Vietnam_M11; Vietnam_M12; Vietnam_M13; Water level; Water sample; WS
    Type: Dataset
    Format: text/tab-separated-values, 67107 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    Inorganic carbon outwelling from mangroves and saltmarshes drives coastal acidification (2022)
    PANGAEA
    Details
    Publication Date: 2024-05-22
    Description: Concentrations of alkalinity (TA) and dissolved inorganic carbon (DIC) in porewater as well as in surface water measured during timeseries (fixed location) and spatial surveys (fixed time period) were compiled from 38 mangrove- and 8 saltmarsh-dominated creeks and estuaries. We used data from creeks that were predominantly surrounded by mangrove or saltmarsh vegetation and with minimal confounding factors such as mixed vegetation or large catchments. These creeks were located in either pristine or anthropologically impacted estuaries or coastal areas. Anthropologically impacted areas were defined as areas that were affected by nearby urban or agricultural activities, potentially delivering pollutants, e.g., sewage or fertilizers, to creeks. We also included pristine mangrove- and saltmarsh dominated estuaries. When available, environmental parameters were also recorded, i.e., season, salinity, temperature, pH, dissolved oxygen (DO), water level, porewater tracer radon (222Rn), partial pressure of carbon dioxide (pCO2), dissolved organic carbon (DOC), particulate organic carbon (POC), nitrate and nitrite (NOx), ammonium (NH4), total nitrogen (TN), phosphate (PO4), and total phosphorus (TP). Methods used to determine parameters are explained in each corresponding reference.
    Keywords: Alkalinity; Alkalinity, total; Alkalinity, total/Carbon, inorganic, dissolved ratio; Ammonium; Australia; Australia_M29; Australia_M30; Australia_M31; Australia_M32; Australia_M33; Australia_M34; Australia_M35; Australia_M36; Australia_M37; Australia_M38; blue carbon; Boron hydroxide; Brazil; Brazil_M18; Brazil_M19; Brazil_M20; Brazil_M21; CA_USA_S02; Carbon, inorganic, dissolved; Carbon, organic, dissolved; Carbon, organic, particulate; Carbon dioxide, partial pressure; China; China_M03; China_S06; China_S07; China_S08; Condition; Country; DATE/TIME; Date/Time local; Dissolved inorganic carbon; Ecosystem; Ecuador; Ecuador_M22; Event label; French_Guiana_M17; French Guiana; GA_USA_S04; Identification; India; India_M04; India_M05; India_M06; India_M07; India_M08; India_M09; Japan; Japan_M02; Kenya; Kenya_M23; Kenya_M24; LATITUDE; LONGITUDE; MA_USA_S01; Madagascar; Madagascar_M28; mangroves; Nitrogen, total; Nitrogen oxide; Oxygen, dissolved; Palau; Palau_M15; Palau_M16; Papua_New_Guinea_M25; Papua New Guinea; pH; Philippines; Philippines_M10; Phosphate; Phosphorus, total; Radon-222; Reference/source; Salinity; saltmarshes; Sample type; SC_USA_S03; Season; Site; Spain; Spain_S05; Tanzania; Tanzania_M26; Tanzania_M27; Temperature, water; Thailand; Thailand_M14; USA; USA_M01; Vietnam; Vietnam_M11; Vietnam_M12; Vietnam_M13; Water level; Water sample; WS
    Type: Dataset
    Format: text/tab-separated-values, 67107 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 5
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    Particle triggered reactions as an important mechanism of alkalinity and inorganic carbon removal in river plumes (2021)
    American Geophysical Union
    Details
    Publication Date: 2022-10-20
    Description: Author Posting. © American Geophysical Union, 2021. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 48(11), (2021): e2021GL093178, https://doi.org/10.1029/2021GL093178.
    Description: The effects of heterogeneous reactions between river-borne particles and the carbonate system were studied in the plumes of the Mississippi and Brazos rivers. Measurements within these plumes revealed significant removal of dissolved inorganic carbon (DIC) and total alkalinity (TA). After accounting for all known DIC and TA sinks and sources, heterogeneous reactions (i.e., heterogeneous CaCO3 precipitation and cation exchange between adsorbed and dissolved ions) were found to be responsible for a significant fraction of DIC and TA removal, exceeding 10% and 90%, respectively, in the Mississippi and Brazos plume waters. This finding was corroborated by laboratory experiments, in which the seeding of seawater with the riverine particles induced the removal of the DIC and TA. The combined results demonstrate that heterogeneous reactions may represent an important controlling mechanism of the seawater carbonate system in particle-rich coastal areas and may significantly impact the coastal carbon cycle.
    Description: This research was funded by the National Science Foundation (NSF) and the Bi-National Science Foundation U.S-Israel award number OCE-BSF 1635388.
    Description: 2021-11-20
    Keywords: Calcium carbonate ; Carbon cycle ; Carbonate chemistry ; Heterogeneous reactions ; Mississippi ; River mouths
    Repository Name: Woods Hole Open Access Server
    Type: Article
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    PAPER (OA)
  • 6
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    Effects of typhoons on surface seawater pCO(2) and air-sea CO2 fluxes in the Northern South China Sea (2020)
    American Geophysical Union
    Details
    Publication Date: 2022-05-26
    Description: Author Posting. © American Geophysical Union, 2020. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 125(8), (2020): e2020JC016258, doi:10.1029/2020JC016258.
    Description: This study assessed the effects of typhoons on sea surface pCO2 and CO2 flux in the northern South China Sea (SCS). During the passage of three major typhoons from May to August 2013, sea surface pCO2, surface seawater temperature (SST), and other meteorological parameters were continuously measured on a moored buoy. Surface water in the region was a source of CO2 to the atmosphere with large variations ranging from hours to months. SST was the primary factor controlling the variation of surface pCO2 through most of the time period. Typhoons are seen to impact surface pCO2 in three steps: first by cooling, thus decreasing surface pCO2, and then by causing vertical mixing that brings up deep, high‐CO2 water, and lastly triggering net uptake of CO2 due to the nutrients brought up in this deep water. The typhoons of this study primarily impacted air‐sea CO2 flux via increasing wind speeds. The mean CO2 flux during a typhoon ranged from 3.6 to 5.4 times the pretyphoon mean flux. The magnitude of the CO2 flux during typhoons was strongly inversely correlated with the typhoon center distance. The effect of typhoons accounted for 22% of the total CO2 flux in the study period, during which typhoons occurred only 9% of the time. It was estimated that typhoons enhanced annual CO2 efflux by 23–56% in the northern SCS during the last decade. As such, tropical cyclones may play a large and increasingly important role in controlling CO2 fluxes in a warmer and stormier ocean of the future.
    Description: This study was supported by the Marine Public Welfare Project of China (Grant 200905012), the Scientific Research Fund of the Second Institute of Oceanography of China (Grant JT1502), the Global Change and Air‐Sea Interaction project of China (Grant GASI‐03‐01‐02‐02), and the National Natural Sciences Foundation of China (Grant 91128212).
    Description: 2021-02-03
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Location Call Number Limitation Availability
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    PAPER (OA)
  • 7
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    Submarine groundwater discharge in the northern Bohai Sea, China: Implications for coastal carbon budgets and buffering capacity (2022)
    American Geophysical Union
    Details
    Publication Date: 2023-01-20
    Description: Author Posting. © American Geophysical Union, 2022. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Biogeosciences 127(8), (2022): e2022JG006810, https://doi.org/10.1029/2022jg006810.
    Description: Submarine groundwater discharge (SGD) has been widely recognized as an important source of dissolved nutrients in coastal waters and affects nutrient biogeochemistry. In contrast, little information is available on SGD impacts on coastal carbon budgets. Here, we assessed the SGD and associated carbon (dissolved inorganic carbon [DIC] and total alkalinity [TA]) fluxes in Liaodong Bay (the largest bay of the Bohai Sea, China) and discussed their border implications for coastal DIC budget and buffering capacity. Based on 223Ra and 228Ra mass balance models, the SGD flux was estimated to be (0.92–1.43) × 109 m3 d−1. SGD was the largest contributor of DIC, accounting for 55%–77% of the total DIC sources. The low ratio (〈1) of SGD-derived TA to DIC fluxes and negative correlation between radium isotopes and pH in seawater implied that SGD would potentially reduce seawater pH in Liaodong Bay. Combining the groundwater carbon data in Liaodong Bay with literature data, we found that the SGD-derived DIC flux off China was 4–9 times greater than those from rivers. By analyzing the TA/DIC ratios in groundwater along the Chinese coast and related carbon fluxes, SGD was thought to partially reduce the CO2 buffer capacity in receiving seawater. These results obtained at the bay scale and national scale suggest that SGD is a significant component of carbon budget and may play a critical role in modulating coastal buffering capacity and atmospheric CO2 sequestration.
    Description: his research was supported by National Natural Science Foundation of China (Grant Nos. 42130703, 42007170) and the Science, Technology and Innovation Commission of Shenzhen (Grant No. 20200925174525002.
    Description: 2023-01-20
    Keywords: Submarine groundwater discharge ; Radium isotopes ; Dissolved inorganic carbon ; Total alkalinity ; Carbon budgets ; Buffering capacity
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Location Call Number Limitation Availability
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    PAPER (OA)
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