BIOC61H3 Lecture : Lecture 5

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orangeherring876

12 Feb 2011

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We discussed running out of crop space to grow food for the human race. I mentioned the use of human high rise structures (vertical gardening) to furnish food on site and bypass the need to transport food items and eliminate the need for tractors etc. It sounds ridiculous at first but it is not and it has to be entertained to serve human and livestock needs. One has to be aware that we are encroaching of every type of eco system on earth and the most land intense activity is land agriculture. The concept of the ecological footprint should be revisited in your minds. Who remember how that was defined? the biggest part of this equation is agriculture production and. Ecological footprint furnish materials i. e. pulp and paper materials calculated on a per capita basis. Remember the number for the average canadian is over 4. 27 hectares/capita.

Related Questions

The Indian caste system historically linked status and ranking in society with purity in food consumption. Thus, the Brahmins, the highest caste, would consume only the purest of cuisines. Which of the following foods characterized the Brahmin diet?

menudo (tripe, intestines)

pork

vegetarian

beef

In discussing the processing of chicha, the corn beer made by the Quechua of Andean South America, Glenna Dean noted the technology involved in jump starting the breaking down of the starches in the corn. Which of the following ingredients do the Quechua use to start their corn beer?

Which of the following uses of food distinguishes large scale hunter gatherers from small scale hunter gatherers?

Large scale use food surpluses to show differences in social ranking

Large scale share food equally among all members fo the social group

Small scale agriculture allows the accumulation of surpluses

Seasonality of food sources prevents accumulation in both groups

Generalized reciprocity is the way that food is exchanged in many small-scale societies. In this form of exchange, the giver of the food...

expects the immediate return of some food of equivalent value

sells the food for an agreed-upon price

shares food in exchange for increased status and prestige

share food so that the recipient will share food back some time in the future

The development of intensive agriculture was important in human history because it

had significant impact on the environment, but this impact was ery localized and could be controlled.

actually bred greater ecological diversity

was an ecological improvement over fallowing as practiced in horticulture

produced the agrcultural surpluses that were critical to the development of complex societies

1.What is an ecological footprint? What is the greatestcontribution that you make to your footprint? How could you reduceit?

2. Are humans a keystone species? Support your answer.

3. Why does community connectedness matter?

4. Why does community change matter?

5. What kind of environmental features favor pioneer species,what kind favor climax/late succession species? What kinds ofadaptations favor pioneer species, and what kinds favor climaxspecies?

5. What do we mean when we say that landscapes are stable?

6. What would a community ecologist be able to learn from the USCensus?

7. What does evolution have to do with community ecology?

8. What role does disturbance play in ecology? Giveexamples.

9. You will be expected to be able to calculate species richnessand determine evenness and species diversity indices.

10. You will be expected to make a connection between carryingcapacity, population growth, and community succession in NewJersey.

11. What are the factors that can or could influence thecarrying capacity of NJ?

12. Rank the following three factors in terms of their impact onhuman carrying capacity: space availability, food availability,money availability.

13. Why are some invasive species more successful (i.e. havegreater fitness) in their introduced environment compared to theirnative environment?

14. What is global change about and how do our actions affectit? How is NJ going to be affected by global change?

15. Why, if it is summer in the southern hemisphere and winterin the northern hemisphere, do we see an overall increase in globalCO2 concentrations?

16. What is a dead zone and how is it created? What humanactivity (ies) help create a dead zone?

17. How would a fire that burns most of a forest affect theenergy, water, nutrient, and carbon cycles?

18. What are ecosystem services? Give an example of two.

19. Show how the energy and carbon cycles are inter-related.Explain what is happening in your diagram.

20. You need to be able to explain why nitrogen is important andwhy too much nitrogen is bad.

21. Which gas is more important for global warming:CO₂ or methane? Why?

22. What are the major carbon sinks and sources on earth?

23. What evidence do we have that CO2 concentration of theatmosphere has increased in the last 200 years and what evidence dowe have that that increase is due to human activity?

24. What is happening to our oceans in response to the increasein CO2 in the atmosphere. Be complete, there is more than one partto this answer.

25. How do we know that global warming is and will have animpact on populations, communities, and ecosystems?

26. Given what we know about Japanese knotweed, global change,and human activity, explain the interactions and consequences ofJapanese knotweed invasion on our water supply. You need toinclude, the physiology of the plant, the population ecology of theplant, the water cycle (ecosystems), and global change.

27. Regional climate change models predict that this area willget warmer and receive more rainfall. They also predict thatagriculture (i.e. growing plants) will suffer. Explain why. Becomplete in your answer. There are several factors at workhere.

28. Why are sea-levels increasing globally? Give a detailedanswer. What are some likely consequences going to be (other thanlosing land).