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The oxygen minimum zone (OMZ), sometimes referred to as the shadow zone, is the zone in which oxygen saturation in seawater in the ocean is at its lowest. This zone occurs at depths of about 200 to 1,500 m (700–4,900 ft), depending on local circumstances. OMZs are found worldwide, typically along the western coast of continents, in areas where an interplay of physical and biological processes concurrently lower the oxygen concentration and restrict the water from mixing with surrounding waters, creating a "pool" of water where oxygen concentrations fall from the normal range of 4–6 mg/L to below 2 mg/L.
Sallie Watson "Penny" Chisholm is an American biological oceanographer at the Massachusetts Institute of Technology. She is an expert in the ecology and evolution of ocean microbes. Her research focuses particularly on the most abundant marine phytoplankton, Prochlorococcus, that she discovered in the 1980s with Rob Olson and other collaborators. She has a TED talk about their discovery and importance called "The tiny creature that secretly powers the planet".
Gordon Arthur Riley was an American biological oceanographer most associated with his studies of the dynamics of plankton ecosystems.
Ocean deoxygenation is the reduction of the oxygen content in different parts of the ocean due to human activities. There are two areas where this occurs. Firstly, it occurs in coastal zones where eutrophication has driven some quite rapid declines in oxygen to very low levels. This type of ocean deoxygenation is also called dead zones. Secondly, ocean deoxygenation occurs also in the open ocean. In that part of the ocean, there is nowadays an ongoing reduction in oxygen levels. As a result, the naturally occurring low oxygen areas are now expanding slowly. This expansion is happening as a consequence of human caused climate change. The resulting decrease in oxygen content of the oceans poses a threat to marine life, as well as to people who depend on marine life for nutrition or livelihood. A decrease in ocean oxygen levels affects how productive the ocean is, how nutrients and carbon move around, and how marine habitats function.
Marine chemistry, also known as ocean chemistry or chemical oceanography, is the study of chemical content in marine environments as influenced by plate tectonics and seafloor spreading, turbidity, currents, sediments, pH levels, atmospheric constituents, metamorphic activity, and ecology. Marine life has adapted to the chemistries unique to Earth's oceans, and marine ecosystems are sensitive to changes in ocean chemistry.
Alexandra (Alex) Z. Worden is a microbial ecologist and genome scientist known for her expertise in the ecology and evolution of ocean microbes and their influence on global biogeochemical cycles.
Susana Agustí Requena is a Spanish biological oceanographer who has participated in over 25 oceanographic expeditions in the Arctic, Southern Ocean (Antarctic), Atlantic, Pacific and Indian Oceans. She played a key role in the Malaspina Circumnavigation Expedition. She is professor in Marine Science at King Abdullah University of Science and Technology in Saudi Arabia and an adjunct Professor at the University of Tromsø (Norway).
Gerold Siedler is a German physical oceanographer. He is professor emeritus at the Christian-Albrechts University of Kiel and at the GEOMAR Helmholtz Centre for Ocean Research Kiel.
Lisa A. Levin is a Distinguished Professor of biological oceanography and marine ecology at the Scripps Institution of Oceanography. She holds the Elizabeth Hamman and Morgan Dene Oliver Chair in Marine Biodiversity and Conservation Science. She studies coastal and deep-sea ecosystems and is a Fellow of the American Association for the Advancement of Science.
Claudia Benitez-Nelson is a Latinx American oceanographer whose research focuses on marine geochemistry and biogeochemistry. A Carolina Distinguished Professor, she serves as the Senior Associate Dean for College Initiatives and Interdisciplinary Programs at the University of South Carolina’s College of Arts and Sciences.
Monika Rhein is a physical oceanographer and Professor of Oceanography at University of Bremen. Rhein has led the authorship of over 29 peer reviewed publications, and is an author of over 100 peer reviewed publications. Rhein has broad ranging interests across oceanography, specialising in understanding the water masses in the oceans and their circulation, ocean mixing and the role of oceans in climate. Rhein's expertise has led to her authoring chapters of the "Technical Summary" and "Summary for Policymakers" of the 5th International Panel of Climate Change (IPCC) report and acting as president of the Ocean Science Division of the European Geoscience Union.
Karin Limburg is a professor in the department of Environmental and Forest Biology at SUNY-ESF.
Sarah Fawcett is a South African oceanographer and climatologist. A senior lecturer in the Department of Oceanography at the University of Cape Town, she is particularly interested in the role of oceans in regulating biogeochemical cycles and how their dysregulation contributes to climate change. She was honoured in the World Economic Forum Young Scientists Class of 2020, and a P-Rating from the National Research Foundation, which recognizes that the scientist's work will likely have high impact.
Jean-Pierre Gattuso is a French ocean scientist conducting research globally, from the pole to the tropics and from nearshore to the open ocean. His research addresses the biology of reef-building corals, the biogeochemistry of coastal ecosystems, and the response of marine plants, animals and ecosystems to global environmental change. He is also interested in transdisciplinary research, collaborating with social scientists to address ocean-based solutions to minimize climate change and its impacts. He is currently a CNRS Research Professor at Sorbonne University.
Dr. Anya Waite is a Canadian biological oceanographer working at the Ocean Frontier Institute at Dalhousie University.
Eileen E. Hofmann is a professor and eminent scholar at Old Dominion University who is known for her research linking biological and physical interactions in marine systems. In 2013, Hofmann was elected a fellow of the American Geophysical Union who cited her "for her pioneering work in modeling physical-biological interactions".
Phyllis Jean Stabeno is a physical oceanographer known for her research on the movement of water in polar regions. She has led award-winning research projects in the Arctic and was noted for a distinguished scientific career by the National Oceanic and Atmospheric Administration.
LuAnn Thompson is the Walters Endowed Professor at the University of Washington. She is known for her work in modeling the movement of heat and chemicals via ocean currents.
Elizabeth A. Canuel is a chemical oceanographer known for her work on organic carbon cycling in aquatic environments. She is the Chancellor Professor of Marine Science at the College of William & Mary and is an elected fellow of the Geochemical Society and the European Association of Geochemistry.
Helle Ploug is marine scientist known for her work on particles in seawater. She is a professor at the University of Gothenburg, and was named a fellow of the Association for the Sciences of Limnology and Oceanography in 2017.
References
- ↑ "GEOMAR Women's Executive Board Lecture Series Celebrates Anniversary". Helmholtz Centre for Ocean Research. 2018-11-21. Retrieved 2019-02-10.
- ↑ "Department of Oceanography: Katja Fennel". Dalhousie University . Retrieved 2019-02-10.
- 1 2 "Oceanographer to speak June 20 at library". The Star Democrat . 2018-06-03. Retrieved 2019-02-10.
- ↑ Peddle, Stuart (2018-09-21). "Climate change effects surfacing faster in Gulf of St. Lawrence". The Chronicle Herald. Retrieved 2019-02-10.
- ↑ "Biogeosciences: An interactive open-access journal of the European Geosciences Union". Biogeosciences. Retrieved 2019-02-09.
- ↑ "Renowned keynote speakers at the Baltic Sea Science Congress". Baltic Sea Centre. Stockholm University. 2019-01-25. Retrieved 2019-02-10.
- ↑ "Katja Fennel - Google Scholar Citations". scholar.google.ca. Retrieved 2020-03-08.
