11:216:352 Lecture Notes - Lecture 2: World Population, Nitrogen Fixation, Anthropocene

14 views1 pages
Chapter 1 Web of life
Concept 1 : Events in the natural world are interconnected
Can be direct or indirect
Concept 2: Ecology is the scientific study of interactions between organisms and their
environment
Concept 3: Ecologists evaluate competing hypotheses about natural systems with
observations, experiments, and models.
Ecosystems & biosphere- translational ecology
Ecology is the scientific study of how organisms affect, and are affected by, other
organisms and their environment.
World Human population growth
River dams, water use, fertilizer use
Human domination
Agricultural and urbanization
Climate change
Extinctions and invasive species
Acidification(unintended consequence), nutrient enrichment, and deoxygenation of water
Anthropocene- human age domination
Nitrogen fixation
Haber- Bosch Process
1918 Nobel Prize awarded to Haber for synthesis of NH3
N2(g) + 3H2(g) = 2NH3(G)
Nitrogen increased dramatically over last 150 years(Used for fertilizer)
100lb N lost 86% to environement. Ends up in rivers(25%)
find more resources at oneclass.com
find more resources at oneclass.com
Unlock document

This preview shows half of the first page of the document.
Unlock all 1 pages and 3 million more documents.

Already have an account? Log in

Get OneClass Notes+

Unlimited access to class notes and textbook notes.

YearlyBest Value
75% OFF
$8 USD/m
Monthly
$30 USD/m
You will be charged $96 USD upfront and auto renewed at the end of each cycle. You may cancel anytime under Payment Settings. For more information, see our Terms and Privacy.
Payments are encrypted using 256-bit SSL. Powered by Stripe.