The same ecological and evolutionary processes operate in marine and terrestrial environments, and yet ocean life survives in a dramatically different fluid environment. The ocean is, in effect, a 1.3 sextillion liter water bath with muted thermal variation through time and space, limited oxygen, and intense convective and conductive processes. In this talk, I will trace some of the consequences for evolution, physiology, population dynamics, community assembly, and conservation at sea, including striking contrasts and similarities to patterns on land.
Open to public
- Thu, Aug 24, 2017, 12:30 pm
- Thu, Aug 17, 2017, 12:30 pm
Infectious diseases have always been a major health problem throughout the world, imposing strong selective pressure on the human genome. Despite the recent development of vaccines and antibiotics, there are still nearly 15 million deaths every year attributable to the effects of infectious diseases. Although genetic studies of infectious diseases have identified important pathways involved in protective immunity, very little is known about the underlying genetic and evolutionary factors contributing to differences in susceptibility to infectious diseases at the population level.
- Thu, Aug 10, 2017, 12:30 pm
Insect immune defense is not static, and dynamic changes in immunity will not be without ecological and evolutionary consequences. Heterogeneity of environments across space, with an element of continuity across time, can select for environment-dependent plasticity in ecologically relevant traits, including immunity. In bumblebees, a social insect, exposure to infectious diseases fits this scenario.
- Thu, Aug 3, 2017, 12:30 pm
On an annual basis terrestrial ecosystems exchange vast quantities of carbon (C) with the Earth’s atmosphere. This exchange is fueled by the efficient use of soil resources such as water, nitrogen and phosphorus, which are essential for plant growth. Acquisitions of soil resources require C investments belowground that necessarily come at the expense of aboveground growth. What biogeophysical processes control this fundamental tradeoff and what are its implications for the global C cycle?