Harper BIO101 Biodiversity Latest 2020 MAY

BIO101 Biology Survey

Biodiversity

The following videos are linked in Blackboard.  As you watch the videos, answer the questions for each section.

A.  “Biodiversity”TedEd Talk with Kim Preshoff: Watch this video for an introduction to biodiversity.

B.  Bozeman Science “Biodiversity and Humans”

1.  Define biodiversity.

2.  What three varieties of biodiversity exist?

3.  Who is the father of biodiversity?

What are the five human impacts he described?

4.  What is the 6th impact that has been added since the 1980’s?

5.  What does extinction mean?  How does this affect biodiversity?

C.  California Institute of Science “Ecosystem Services”

1.  What are three ecosystem services?

2.  List several examples of direct ecosystem services.

3.  Two examples of indirect services are mangroves and the NYC water system.  Describe the indirect services of each described in the video.

4.  Ethical and aesthetic services orvalue provided by biodiversity is very difficult to put a price on.  Value comes from what we leave for the future.  What are three things that affect what we leave for the future that we can’t repair?

5.  How can we prevent this loss?

D.  “Human Activities that Threaten Biodiversity”

1.  What was the estimated population in 2014?

    What is the projected population by 2050?

2.  What is carrying capacity?

3.  Thomas Malthus said the planet would check human population growth through _________________.

4.  Why haven’t we hit the Malthusian carrying capacity limit for humans?

5.  The wealthiest 6% of the population use _______of the available resources on the planet.

6.  How do human population growth and resource utilization affect biodiversity

7.  What is species richness?      

8.  How are species richness and population growth linked?

9.  There are seven major human mediated causes of biodiversity loss.  The four local causes are land use changes, pollution, resource exploitation, and introduction of exotic species (covered in the next video).

B.  List 4 examples of pollution and explain how they affect biodiversity.

C.  Give two examples of resource exploitation and explain how they affect biodiversity.

E.  “Introduced Species and Biodiversity”

1.  What is an introduced or exotic species?

2.  How is this different from a native species?

3.  Give one example of an accidentally introduced species discussed in the video.

4.  How much money is spent on the impacts of introduced species?

5.  What is a cryptogenic species? 

6.  Why are baseline collections important when studying changes in biodiversity?

7.  Are all introduced species harmful?  Yes   No

Give two examples of introduced species that have been helpful to humans.

8.  What two natural controls do many introduced species possess that give them a competitive advantage over native species?

9.  What is an invasive species?

10.  All invasive speciesare introduced.  Not all introduced species are invasive.

11.  Invasive species are ultimately organisms that cause a decrease in ecosystem function.

12.  Who is the ultimate invasive species?