scholarly journals Atmospheric CO2 evasion, dissolved inorganic carbon production, and net heterotrophy in the York River estuary

2000 ◽  
Vol 45 (8) ◽  
pp. 1707-1717 ◽  
Author(s):  
Peter A. Raymond ◽  
James E. Bauer ◽  
Jonathan J. Cole
Keyword(s):  
Inorganic Carbon ◽  
Dissolved Inorganic Carbon ◽  
River Estuary ◽  
Atmospheric Co2 ◽  
York River ◽  
York River Estuary ◽  
Carbon Production ◽  
Net Heterotrophy

Mud matrix solids fraction and bed erodibility in the York River estuary, USA, and other muddy environments

2011 ◽  
Vol 31 (10) ◽  
pp. S3-S13 ◽  
Author(s):  
Patrick J. Dickhudt ◽  
Carl T. Friedrichs ◽  
Lawrence P. Sanford
Keyword(s):  
River Estuary ◽  
York River ◽  
York River Estuary

Empirical Models Of Stratification Variation In The York River Estuary, Virginia, USA

2013 ◽  
pp. 346-367
Author(s):  
D. Hayward ◽  
L.W. Haas ◽  
J.D. Boon III ◽  
K.L. Webb ◽  
K.D. Friedland
Keyword(s):  
River Estuary ◽  
Empirical Models ◽  
York River ◽  
York River Estuary

scholarly journals Radiocarbon isotopic evidence for assimilation of atmospheric CO<sub>2</sub> by the seagrass <i>Zostera marina</i>

2015 ◽  
Vol 12 (20) ◽  
pp. 6251-6258 ◽  
Author(s):  
K. Watanabe ◽  
T. Kuwae
Keyword(s):  
Carbon Source ◽  
Zostera Marina ◽  
Inorganic Carbon ◽  
Aquatic Vegetation ◽  
Dissolved Inorganic Carbon ◽  
Isotope Analysis ◽  
Co2 Exchange ◽  
Atmospheric Co2 ◽  
Isotopic Signatures ◽  
Seagrass Meadows

Abstract. Submerged aquatic vegetation takes up water-column dissolved inorganic carbon (DIC) as a carbon source across its thin cuticle layer. It is expected that marine macrophytes also use atmospheric CO2 when exposed to air during low tide, although assimilation of atmospheric CO2 has never been quantitatively evaluated. Using the radiocarbon isotopic signatures (Δ14C) of the seagrass Zostera marina, DIC and particulate organic carbon (POC), we show quantitatively that Z. marina takes up and assimilates atmospheric modern CO2 in a shallow coastal ecosystem. The Δ14C values of the seagrass (−40 to −10 ‰) were significantly higher than those of aquatic DIC (−46 to −18 ‰), indicating that the seagrass uses a 14C-rich carbon source (atmospheric CO2, +17 ‰). A carbon-source mixing model indicated that the seagrass assimilated 0–40 % (mean, 17 %) of its inorganic carbon as atmospheric CO2. CO2 exchange between the air and the seagrass might be enhanced by the presence of a very thin film of water over the air-exposed leaves during low tide. Our radiocarbon isotope analysis, showing assimilation of atmospheric modern CO2 as an inorganic carbon source, improves our understanding of the role of seagrass meadows in coastal carbon dynamics.

scholarly journals Dead in the water: The fate of copepod carcasses in the York River estuary, Virginia

2010 ◽  
Vol 55 (5) ◽  
pp. 1821-1834 ◽  
Author(s):  
David T. Elliott ◽  
Courtney K. Harris ◽  
Kam W. Tang
Keyword(s):  
River Estuary ◽  
York River ◽  
York River Estuary
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