Now showing items 11-20 of 5601
Salinity and the global water cycle
(Oceanography Society, 2008-03)
(Ecological Society of America, 2009-10)
By definition, ecological systems at a stable equilibrium eventually return to the equilibrium point following a small perturbation. In the short term, however, perturbations can grow. Equilibria that exhibit transient ...
Coastal Ocean Processes program : advancing interdisciplinary research and technology development
(Oceanography Society, 2008-12)
The seasonal nitrogen cycle in Wilkinson Basin, Gulf of Maine, as estimated by 1-D biological model optimization
The objective of this study was to fit a simple ecosystem model to climatological nitrogen cycle data in the Gulf of Maine, in order to calibrate the biological model for use in future 3-D modelling studies. First ...
Culture dependent and independent analyses of 16S rRNA and ATP citrate lyase genes : a comparison of microbial communities from different black smoker chimneys on the Mid-Atlantic Ridge
The bacterial and archaeal communities of three deep-sea hydrothermal vent systems located on the Mid-Atlantic Ridge (MAR; Rainbow, Logatchev and Broken Spur) were investigated using an integrated culture-dependent and ...
New cytochrome P450 1B1, 1C2 and 1D1 genes in the killifish Fundulus heteroclitus : Basal expression and response of five killifish CYP1s to the AHR agonist PCB126
Knowledge of the complement of cytochrome P450 (CYP) genes is essential to understanding detoxification and bioactivation mechanisms for organic contaminants.We cloned three new CYP1 genes, CYP1B1, CYP1C2 and CYP1D1, ...
Biogeochemical responses to late-winter storms in the Sargasso Sea, III—Estimates of export production using 234Th:238U disequilibria and sediment traps
Direct measurements of new production and carbon export in the subtropical North Atlantic Ocean appear to be too low when compared to geochemical based estimates. It has been hypothesized that episodic inputs of new ...
Dual isotope analyses indicate efficient processing of atmospheric nitrate by forested watersheds in the northeastern U.S.
Nitrogen from atmospheric deposition serves as the dominant source of new nitrogen to forested ecosystems in the northeastern U.S.. By combining isotopic data obtained using the denitrifier method, with chemistry and ...
Numerical study of circulation on the inner Amazon Shelf
We studied the circulation on the coastal domain of the Amazon Shelf by applying the hydrodynamic module of the Estuarine and Coastal Ocean Model and Sediment Transport - ECOMSED. The first barotropic experiment aimed ...
Identification of possible source markers in marine dissolved organic matter using ultrahigh resolution mass spectrometry
Marine dissolved organic matter (DOM) is one of the most heterogeneous and largest pools of reactive carbon on earth, rivaling in mass the carbon in atmospheric carbon dioxide. Nevertheless, the molecular-level composition ...