Class Notes (891,496)
US (345,552)
UMN (3,581)
EEB (26)
EEB 3408W (19)
Lecture 20

EEB 3408W Lecture 20: ecology lecture 20
Premium

3 Pages
82 Views

Department
Ecology, Evolution, and Behav
Course Code
EEB 3408W
Professor
Cavender- Bares, Jeannine

This preview shows page 1. Sign up to view the full 3 pages of the document.

Loved by over 2.2 million students

Over 90% improved by at least one letter grade.

Leah — University of Toronto

OneClass has been such a huge help in my studies at UofT especially since I am a transfer student. OneClass is the study buddy I never had before and definitely gives me the extra push to get from a B to an A!

Leah — University of Toronto
Saarim — University of Michigan

Balancing social life With academics can be difficult, that is why I'm so glad that OneClass is out there where I can find the top notes for all of my classes. Now I can be the all-star student I want to be.

Saarim — University of Michigan
Jenna — University of Wisconsin

As a college student living on a college budget, I love how easy it is to earn gift cards just by submitting my notes.

Jenna — University of Wisconsin
Anne — University of California

OneClass has allowed me to catch up with my most difficult course! #lifesaver

Anne — University of California
Description
Photosynthesis and the Carbon Cycle - Population & community ecology focus on organism abundance and distribution - Ecosystem ecology focuses on energy and element cycling - Need to know mechanisms and organism responses 1. Species differ in effects on cycling 2. Cycling influences distribution and abundance of organisms Carbon cycle - Plate tectonics and organisms’ chemistries drive C cycle - Plates converge and more rock is exposed to carbonic acid weathering - Carbonic acid is formed from water and CO2 in atmosphere - Then Ca and bicarbonate wash into the ocean & are incorporated in marine organisms, ultimately buried - CO2 sinks = weathering - Marine organisms precipitate CaCO3 and SiO2 - CO2 sources (emissions) = metamorphism - Animal and plant respiration - Sun is ultimate energy source for all ecosystems - Sun energy is used to fix CO2 into reduced C compounds during photosynthesis - Plants, protists and some bacteria do this - Reduced compounds provide energy to the plants, their consumers and detritivores - Photosynthesis is base of productivity of life - When reduced C is consumed, CO2 is respired and returned to the atmosphere - Exposure of rocks to weathering has lowered atmospheric CO2 over last 50 million years - in last 5-7 million years, is has been a limiting factor to plants - Tradeoff between CO2 uptake and water loss - Plants obtain CO2 through pores in leaf (stomata) at a cost of H2O - Stomates open under turgor pressure - C3 is the most common photosynthetic pathway - Takes place i
More Less
Unlock Document
Subscribers Only

Only page 1 are available for preview. Some parts have been intentionally blurred.

Unlock Document
Subscribers Only
You're Reading a Preview

Unlock to view full version

Unlock Document
Subscribers Only

Log In


OR

Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit