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Growth and development of larval bay scallops (Argopecten irradians) in response to early exposure to high CO₂
(Massachusetts Institute of Technology, 2013)
Coastal and estuarine environments experience large variability and rapid shifts in pCO₂ levels. Elevated pCO², or ocean acidification, often negatively affects early life stages of calcifying marine invertebrates, including ...
Advances in measurements of particle cycling and fluxes in the ocean
(Massachusetts Institute of Technology, 2013)
The sinking flux of particles is an important removal mechanism of carbon from the surface ocean as part of the biological pump and can play a role in cycling of other chemical species. This work dealt with improving methods ...
Deep explosive volcanism on the Gakkel Ridge and seismological constraints on Shallow Recharge at TAG Active Mound
(Massachusetts Institute of Technology, 2013)
Seafloor digital imagery and bathymetric data are used to evaluate the volcanic characteristics of the 85°E segment of the ultraslow spreading Gakkel Ridge (9 mm yr-¹). Imagery reveals that ridges and volcanic cones in the ...
An investigation of the roles of geomagnetic and acoustic cues in whale navigation and orientation
(Massachusetts Institute of Technology, 2013)
Many species of whales migrate annually between high-latitude feeding grounds and low-latitude breeding grounds. Yet, very little is known about how these animals navigate during these migrations. This thesis takes a first ...
Marine microbial intact polar diacylglycerolipids and their application in the study of nutrient stress and bacterial production
(Massachusetts Institute of Technology, 2013)
Intact polar diacylglycerolipids (IP-DAGs) were used to study microbial dynamics in the surface ocean. IP-DAGs from surface ocean seawater were quantified using high performance liquid chromatography-mass spectrometry ...
Microbial production and consumption of marine dissolved organic matter
(Massachusetts Institute of Technology, 2013)
Marine phytoplankton are the principal producers of oceanic dissolved organic matter (DOM), the organic substrate responsible for secondary production by heterotrophic microbes in the sea. Despite the importance of DOM in ...