Latitudinal diversity gradient as you move from the polar regions towards the Equator,
you will see biodiversity or species richness increase (more species in tropics than in the
temperate, and more in the temperate than in the polar regions)
September 28, 2016
Ecologists want to know why there are concentrations of species in certain regions and
not in others
Fundamental processes climatic factors (joint conditions of temperature and
precipitation delineate major biomes)
Ecosystem (Tansley) all of the components of an ecological system, biotic and abiotic,
that influence the flow of energy and elements.
Integration of ecology with other disciplines such as geochemistry, hydrology, and
September 26, 2016
Organization of biological systems
Biosphere (Earth system)
Many ecosystems (Landscape ecology)
Ecosystems energy and nutrient movement
Communities biodiversity of populations of different species
Populations demography (human popu
October 7, 2016
Diversity of life in all its forms at all levels of organizations
o Genetic, species, ecosystem levels
Species are being discovered and going extinct all the time, but we dont know the
specific rates of either uncertainty ab
Incoming radiation from the sun is largest (more direct) at the equator and smallest at
high latitudes at the poles because of the tilt of the earth
Radiation is emitted back to space outgoing radiation peaks at the equator and is
lowest at high latitude
Less energy available at each subsequent trophic level because of law of
Most of the energy in the pool is channeled through the decomposer system rather than
the grazer system
Detrital matter (i.e. wood) and fecal excretion from grazer sy
Lowest values of albedo are in the open ocean (dark regions)
Highest values of albedo are in the polar regions where there is a lot of snow and ice
Top of the clouds are brighter and reflect light
Outgoing longwave radiation is measuring the amount of ra
Introduced species (be specific)
o European earthworms a lot of soil was imported from Europe by settlers both
unintentionally and intentionally to grow plants in the US
Earthworms have an effect on certain soil formation and fertility and thus
November 18, 2016
Warm air is transferred to the poles and cold air is transferred equatorward
Impacts of Climate Change
We have the best understanding of global-scale processes; our ability to predict regional
processes is worse
Out of all of the clima
270.103 Introduction to Global Environmental Change
Homework 1. Assigned Wed. 11-Sept, Due Fri. 20-Sept
Policy on group work:
Do your own work. If you get stuck, its ok to consult with your peers or the TAs
IGEC Fall 2013 Homework Assignment #3
Assigned: 1 Nov 2013 (Friday)
Due: 8 Nov 2013 (Monday)
*Please turn in the homework ON PAPER, in class, Monday Nov 8 (no emailed
homework will be accepted). Use extra pap
2pm Friday December 13.
Same format as mid-term exam (but ~twice as long): 8-10
short answer and ~30 multiple choice questions.
Exam will cover the whole course, with each weight to first
and second half.
As for mid-term exams focus on material
IGEC Fall 2013
Homework Assignment #4
Assigned: 22 Nov 2013 (Friday)
Due: 4 Dec 2013 (Wednesday)
*Please turn in the homework ON PAPER, in class, Wednesday Dec 4. Late
homework will be docked at a rate of
E&PS Undergrad Party
Tuesday Oct 1, 5:30-6:30pm
Current majors and minors:
meet your fellow E&PS students
Prospective E&PS students:
find out what its all about
2nd floor common area, Olin Hall,
5:30-6:30pm - free food!
A simple view of the carbon c
Earth during the PETM event, ~55 million years ago
Eocene Thermal Maximum
McInerney and Wing, 2011, Ann. Rev. Earth Planet. Sci.
Marine Carbonate Isotope Records of ClimaNc VariaNon, 70 Ma to present
Lecture 12: Where are the fossil fuel carbon emissions going?
Reading: Chapter 8
Key concepts / facts / vocab etc.:
Only about half of the C we put into the atmosphere stays in the atmosphere
Growth of b
Todays topics: Sedimentary Rocks. Long term carbon cycle review.
Rela<onship to plate tectonics. Lessons from Venus.
CO2 as an acid driving chemical weathering
Urey reac<on and re
Systems diagrams, and a closer look at Daisyworld
How old is the Earth?
How could we possibly go about answering this ques;on?
Further reading: The Age of the Earth by G. Brent Da
Homework 1 is available on Blackboard
It is due next Friday, September 20 (hand in during class; no
electronic versions accepted; OK to use extra paper).
Policy on group work:
Do your own work. If you get
Whats inside the Earth?
Reading: All of Chapter 7, Circula>on of the Solid Earth (covers next two lectures)
Key points / topics / vocabulary:
Seismology: The dierence between P-
waves and S-
waves, and what th
The atmospheric circulation system
Why does the air move?
Are the movements of the winds random across the surface of
the Earth, or do they follow regular patterns?
What implications do these circulatory systems have for global climate?