VIDEO CONTENT FOR BIO 209 SPRING 2020
This is the page where we will post all of our mini-lecture videos and our recorded live sessions. We will also post good material from colleagues around the world that is relevant (and better produced/edited). Please take advantage of whatever resources work for you. If you find good additional material please shoot us an email and we'll post it.
Post Spring break Q&A sessions:
Monday: https://duke.zoom.us/rec/share/_5ZuIq_Q9k1JGongxmCOS74hTsf0aaa8h3BMrvQMxRwSXWe-FVpxbolTrnNHMgCI
Tuesday:
Disease Ecology
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Duke BIO 209 Recordings
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Lectures from the Web
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Community Ecology
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Duke BIO 209 Recordings
Physical and mental health first (4 min) https://duke.zoom.us/rec/share/3M5QFInr2XFJc6vO01zNRqgLQILrT6a8gyNLrPtemEr7lUkkGHalEaIFAMdjRUhB?startTime=1585605333000 Stability (10 min) https://duke.zoom.us/rec/share/yvVcDZbT5zhITdbC7V3GAocwRqDHT6a8hCkarPFbzxnZE5c5n2hqQ2owNEJWsuu9?startTime=1585612089000 Alternative Stable states (7 min) https://duke.zoom.us/rec/share/zO1QAZX6y2NLXK_s5HHFZIAqJIndT6a803BI8qYEmH0aJwSDs6j1IVexLRCUWy4?startTime=1585616506000 Top-down vs bottom-up control/ Keystone species (12 min) https://duke.zoom.us/rec/share/uZVkHrDO11JOH4Ho4RmEUYd7N6jfeaa80HcZrPEOzh0GLYllLC6nqG6QtZ-AVchU?startTime=1585628309000 [Errata: I said Robert May when I should have said Robert Paine!] Behavioral cascades (7 min) https://duke.zoom.us/rec/share/3tJ2dYHX0nhOXLfQ8GfuQaAsXYTFX6a823BPq6ZcxEgM2m4PIjjNlltEMwbWXzGK?startTime=1585632011000 Food web connectance: how and why (19 min) https://duke.zoom.us/rec/share/7s15LbWp20hLAavV82D6ZukvAK_dT6a8hCVIqPFczEuz9TDn3mUuZhfdFwdd8l9N?startTime=1585638094000 |
Lectures from the Web
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Ecosystem Ecology
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Duke BIO 209 Recordings
I. Introduction to Ecosystems (6:40)
II. Getting energy into the biosphere - Photosynthesis from leaf to planet
III. The 2nd Law of Thermodynamics - Energy Dissipation in Ecosystems
Errata: In part II I flubbed the explanation of why we measure [O2] in aquatic systems and [CO2] in terrestrial ecosystems. It is because small changes in O2 are hard to measure in the atmosphere against the high background (O2 is 20% of atmosphere) while CO2 is highly soluble so is often quite high in water relative to O2 (which is not very soluble). Our ability to detect each gas, and the sensors developed to do so differs between aquatic and terrestrial habitats. The metrics can be converted a respiratory quotient (which is the ratio of the production of CO2 and the consumption of O2 during respiration (RQ = ΔCO2/-ΔO2))
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Lectures from the Web
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Carbon & Nutrient Cycling
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Duke BIO 209 Recordings (click to link - if they don't work - sign in to Sakai and try the links again)
Intro to Decomposition (7:11)
Human Impacts on Global Nitrogen Cycle (my version --> more professional one to the right)
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Lectures from the Web
Algal Blooms Explained (with whole lake experiments!)
Human Impacts on the Global N Cycle
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Climate Change
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Duke BIO 209 Recordings
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Lectures from the Web
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