BIOL 2650

Homework 1: 17 points

Fall 2007

Go to the webpage for the Millennium Ecosystem Assessment, click on Ecosystems and Human Well-Being, General Synthesis.  Read pages 1-24, Summary for Decision Makers, and answer the following questions.  http://www.millenniumassessment.org/en/Synthesis.aspx  Answers must be typed and turned in by 9/17.

(1)1. Rephrase and summarize Finding # 1.

(2) 2. Give two examples of changes to ecosystems, and two examples of loss of biodiversity that are from the data supporting Finding #1.

(1) 3. From figure 3, which two biomes currently show the greatest % conversion (loss) of natural area?

(2) 4. From figure 3, which additional biomes are projected to show conversion% of 67% (2/3) or more by year 2050?

(4.5) 5. According to Finding # 2, gains in human well-being and economic development have been achieved at what cost? List the 3 general categories. For each, describe an example of the relationship between the use/misuse of a particular resource and human well-being.

(2) 6. Explain what is meant by "non-linear" changes in ecosystems. Describe an example.

(2) 7. Which of the 4 MA scenarios of the future do you think is most likely? Support your answer.

(2.5) 8. In order to reverse ecosystem degradation, what are the 5 indirect drivers that need to be addressed?