MBI Videos
Videos by Workshop 6 : Ocean Ecologies and their Physical Habitats in a Changing Climate
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Evolution of phytoplankton cell size in a variable environment
Ariane VerdyThe size of phytoplankton cells determines their competitive ability, sinking rate, and potential to export carbon to the deep ocean. Observations suggest that small phytoplankton species dominate the equatorial and subtropical oceans while larger species are more abundant in subpolar regions. To understand this pattern, we have developed an allometric model for the evolut... -
Climate Connections to Marine Ecosystems - From The Amazon To Antarctica
Patricia YagerNo description available.... -
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Toward a grand unified theory of copepods
Nicholas RecordPelagic copepods are the dominant mesozooplankton in much of the world's oceans. They form a crucial link in the transfer of energy from primary production to upper trophic levels, and they are a significant contributor to vertical carbon flux through migration and fecal pellets. Much effort has gone into studying the effects of climate change on individual species. T... -
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Predicting the behavior of ocean ecology in a changing climate: from simple theory to global climate models
Irina MarinovClimate driven changes to the physical structure of the ocean will modify oceanic temperature, light, and nutrients, essential ingredients for the growth of ocean phytoplankton. In turn, resulting changes in phytoplankton growth and community structure will affect export production, deep ocean carbon storage, and ultimately atmospheric carbon.
The questions I work on a... -
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Brine-biogeochemistry interactions in Sea Ice
Martin VancoppenolleThe polar oceans have already experienced significant ecosystem shifts associated with sea ice retreat. Earth system models suggest that major changes in marine ecosystems and biogeochemistry will keep on going through the 21st century. However, future projections of the polar oceans are subject to some of the largest uncertainties. Among the sources of uncertainty is the ... -
Phytoplankton growth in oligotrophic oceans: Weakly nonlinear theory
Arjen DoelmanIn this talk, we will consider the problem of bifurcating DCMs under nutrient-light co-limitation from a weakly nonlinear point of view. In particular, we will work with the plankton-nutrient model in one spatial dimension introduced in A. Zagaris's talk and investigate the weakly nonlinear stability problem for these bifurcating DCMs.
The most intrigui... -
Phytoplankton growth in oligotrophic oceans: Linear theory
Antonios ZagarisIn this talk, we will present analytic results concerning phytoplankton growth under nutrient-light co-limitation. The model we employ consists of two reaction-advection-diffusion PDEs for the plankton and nutrient concentrations and incorporates self-shading effects.
In the first part of this talk, we will work with a single spatial dimension (depth) and lo... -
Paleo-perspective of the development of sea ice and related biota in the Arctic Ocean
Leonid PolyakThe Arctic environment is experiencing a rapid change due to the ongoing climate warming, with an especially high rate of temperature increase in the Arctic. The core of this change is the cryosphere destruction: an abrupt decrease in sea ice extent and volume, intensified glacier melting, and degradation of the permafrost. These processes profoundly affect the entire Arct... -
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Ocean Dynamics
Emily ShuckburghPart 1 of a two-part introduction to the mathematics of ocean dynamics, transport and mixing.... -
Ocean Transport and Mixing
Emily ShuckburghPart 2 of a two-part introduction to the mathematics of ocean dynamics, transport and mixing.... -
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Intoductions and questions/panel with morning speakers
Alan HastingsPanel discussion with morning speakers David Thomas and Alan Hastings... -
A Glacier Paleoclimate Perspective for the last 10,000 years from the World's Highest Mountains
Lonnie ThompsonNo description available.... -
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Ecological Modeling
Alan HastingsSome underlying issues of modeling in ecology
2 species predator prey dynamics and analysis
Aquatic ecological systems - basic issues
NPZ modeling basics
NPZ "applications" and extensions...
