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Population dynamics and diversity of Synechococcus on the New England shelf
(Massachusetts Institute of Technology, 2014)
Synechococcus is a ubiquitous marine primary producer. Our understanding of the factors that determine its abundance has been limited by available observational tools, which have not been able to resolve population dynamics ...
Productivity, metabolism and physiology of free-living Chemoautotrophic Epsilonproteobacteria
(Massachusetts Institute of Technology, 2016)
Chemoautotrophic ecosystems at deep-sea hydrothermal vents were discovered in 1977, but not until 1995 were free-living autotrophic Epsilonproteobacteria identified as important microbial community members. Because the ...
Functional connectivity of coral reef fishes in a tropical seascape assessed by compound-specific stable isotope analyses
(Massachusetts Institute of Technology, 2011)
The ecological integrity of tropical habitats, including mangroves, seagrass beds and coral reefs, is coming under increasing pressure from human activities. Many coral reef fish species are thought to use mangroves and ...
Life cycle studies of the red tide dinoflagellate species complex Alexandrium tamarense
(Massachusetts Institute of Technology, 2011)
Blooms of toxic species within the algal dinoflagellate species complex Alexandrium tamarense may cause Paralytic Shellfish Poisoning, a significant and growing environmental threat worldwide. However, blooms of closely ...
Phosphorus physiology of the marine cyanobacterium Trichodesmium
(Massachusetts Institute of Technology, 2010)
Primary producers play a critical role in the oceanic food chain and the global cycling of carbon. The marine diazotroph Trichodesmium is a major contributor to both primary production and nitrogen fixation in the tropical ...
Physiological and behavioral responses, and their variability, in squid, Doryteuthis pealeii, embryos and paralarvae reared under chronic ocean acidification
(Massachusetts Institute of Technology, 2019)
Ocean acidification (OA) and related stressors, like warming, are occurring rapidly in coastal systems. There is concern about the impacts these stressors may have on the early development of species that use the nearshore ...
Impacts of developmental exposures to the harmful algal bloom toxin domoic acid on neural development and behavior
(Massachusetts Institute of Technology, 2019)
Harmful algal blooms (HABs) can produce potent neurotoxins that accumulate in seafood and affect human health. One HAB toxin of concern is domoic acid (DomA), a glutamate analog produced by the marine diatom Pseudo-nitzschia ...
Characterizing the ecology of coral reef microorganisms across different scales within the Caribbean
(Massachusetts Institute of Technology, 2020)
Microorganisms sustain the high productivity of coral reefs and support one of the most diverse, valuable, and threatened ecosystems on Earth. Despite the importance of reef microorganisms, there is a lack of understanding ...
The choreography of belonging : toothed whale spatial cohesion and acoustic communication
(Massachusetts Institute of Technology, 2016)
To maintain the benefits of group membership, social animals need mechanisms to stay together and reunite if separated. This thesis explores the acoustic signals that dolphins use to overcome this challenge and mediate ...
Modeling the processes affecting larval haddock (Melanogrammus aeglefinus) survival on Georges Bank
(Massachusetts Institute of Technology, 2011)
The ultimate goal of early life studies of fish over the past century has been to better understand recruitment variability. Recruitment is the single most important natural event controlling year-class strength and biomass ...