SOC 2080 Mar.13.docx

27 views2 pages
15 Mar 2012
Department
Course
March, 13 2012
Pesticides and Food: Some Issues
-“safe” levels for only 100 of 250-300 base chemicals
-the breakdown problem: the case of Alar
-combined or “synergistic” effects?
-Synergistic effect is the effect that these pesticides do to the products they are used on
-many consider the organic option [has substantial lower rates of pesticide use]
-what about banned/unregistered pesticides we eat on imports?
-but aren’t those natural toxins much worse?
-Aflotoxins in nuts [essentially mold]
-carcinogens in burned meat
-who else is at risk: farmers and farm workers
-farmers can have higher rates of certain cancers [due to the diff. pesticides they use]
-food outside our boarders, produced by farm workers [heavy use of migrant labour]
-some good news:
-Sweden, Norway, Denmark & prov. Of Ontario have reduced pesticide use between 50-75% in recent
years
The Land Ethic: Aldo Leopold 1887-1948
-the story of Odysseus: What is L.’s message?
-how is land like the slave girls?
-Privilege but not obligation
-what is an ethic? For L. it’s a “differentiation of social from anti-social conduct”
-the single premise of ethics: the individual is a member of community w/interdependent parts
-what would a land ethic do?
-change role of Homo sapiens from conqueror [anthropocentric view] to plain member of a wider
community [ecocentric
-“the problem we face is the extension of the social conscience from people to land”. Land must become
valuable in its own right
-ecological history: wrecked landscapes and ecological succession. [Had no ethics for the land, didn’t
care what happened to it]
-what is wrong w/conservation based on economic self-interest?
-> assuming the “economic” parts of the biotic clock function w/out the non-economic parts. Keystone
species: species that exert some kind of controlling influence. I.e. the sea otter [help regulate their
ecosystem by regulating sea urchins population]
-The Land Pyramid: a succession of biotic layers, each dependent on the one below -> i.e. food chains
-the lower levels numerically greater than higher layers
-land as a “fountain of energy” -> energy flows through circuits of soils, plants, animals -> food chains
conduct energy upwards, followed by decay and return of energy to the soil
-conventional agriculture may derange energy flow and/or deplete storage in the soil
-aquifer depletion via irrigation; continual monocropping; poor cultivation practices->soil loss, soil
salinization
-“land is a community, is a basic concept of ecology, but that land it to be loved and respected is an
Unlock document

This preview shows half of the first page of the document.
Unlock all 2 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.