BIOC63H3 Lecture : BGYC63 Sept20

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blushotter684

15 Oct 2011

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Greek, they had a natural product, used as a form of birthcontrol (plant called silphium) Exchange of goods from where they grew this. The value of it went up so much that it was engraved on coins etc. The heart of love, comes from the shape of the seed of the silphium. First plant to be driven to extinction by the use of people. How dependant we were on it: intrinsic value. Independent of any value to anyone or anything. There is no trade in use of this given organism. They are just there for thier own sake. If god created them, the creatures must have an intrinsic value. Creation is good, so we shouldnt be distroying it. Nature has uses otehr than human gain; nature has more value than just what it can give us. So away from religion, but intrinsic value. Just distribution of natural resources across generations; sustainable way through generations.

Related Questions

Question 292 pts

Which of the below are arguments for the preservation of biodiversity from the perspective of environmental ethics?

SELECT ALL THAT APPLY (You may need to select more than one answer)

Biodiversity must be preserved because of its direct use value

Biodiversity must be preserved because species have intrinsic value

The preservation of biodiversity is proper stewardship of the earth

None of these

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Question 302 pts

Which of the following is a consequence of biological magnification (biomagnification)?

Toxic chemicals in the environment pose greater risk to top-level predators than to primary consumers.

The amount of biomass in the producer level of an ecosystem decreases if the producer turnover time increases.

Populations of top-level predators are generally smaller than populations of primary consumers.

Only a small portion of the energy captured by producers is transferred to consumers.

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Question 312 pts

Which of the below can reduce the quality of habitat fragments for species that typically occur deep in the forest?

SELECT ALL THAT APPLY (You may need to select more than one answer)

Decreased levels of humidity

Increased levels of wind

None of these

The presence of housecats

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Question 322 pts

Hannah et al. (2002) concluded that______________

SELECT ALL THAT APPLY (You may need to select more than one answer)

The Kyoto Protocol is likely to halt the increase in CO2 emissions

Conservationists must become active in the debate over climate change

Shifting ranges of species due to climate change will require international cooperation to conserve

None of these

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Question 332 pts

What does it mean when we say that conservation biology is a normative discipline?

It argues that extinctions are not natural, and should always be prevented

None of these

It's a discipline that is neutral to the question of whether biodiversity should be preserved

It's a discipline that embraces particular values

Will rate when all are answered.

Read the attached case study about Bighorn sheep and hunting, then answer the following questions.

1. Why do we preserve a particular species? Because of its value to the conservation of overall biodiversity, or because of an intrinsic right to exist?

2. Why is it socially or ethically acceptable to hunt certain species but not others? Where and why do we draw the line? What are the pros and cons of culling lions?

3. What are some methods that the Fish and Game Commission could use to moderate the cons?

4. What are the cons of bighorn sheep extinction? Humans hunt wild ungulates and rodents.

5. Why do voters have such a strong aversion to killing lions when hunting other mammals is morally or socially acceptable? Is this concern for charismatic megafauna actually counterproductive to environmental goals / biodiversity conservation? Briefly explain you answer.

Are my answers to the following correct?

True, False, True, C and A,B,D

1. Species accumuation are used to estimate local, or alpha,diversity.

2. The shape of a species accumulation curve depends, in part,on the order in which sampes are processed.

3. Species accumulation curves are not needed when a completecensus is available.

4. Which of the following statements about beta deiversity isFALSE?

a. Beta diversity measures how quickly species compositionchanges across the landscape

b. There are a variety of different ways researchers havemeasured beta diversity

c. Relatively flat, homogeneous habitats tend to have higherbeta diversity

d. Beta diversity changes depending on the scale at which youmeasure it

5. Paul Ehrlich and E.O. Wilson offered a number of reasons toprotect biodiversity. What were they?

a. Earth cannot "survive" antoher mass extinction event

b. People have an aesthetic and moral obligation to protectEarth's species

c. Earth's biodiversity may provide us with important newresources in the future

d. Loss of biodiversity may reduce ecosystem services that wouldbe difficult to replace

False, False, True, True, Sahara dessert, Secular migration andSweetstakes route

6. Immigration rates decline as the size of an islandincrease.

7. Extinction rates decline as the number of species on anisland increases.

8. Extinction rates increase as the size of an islanddecreases.

9. All else being equal, turnover rates are higher on smallislands than on large ones.

10. When we think of islands, we often think of them as landmasses surrounded by water. Ecologists have suggested a muchbroader definition of an island. Which of the following would NOTbe viewed as an island by an ecologist?

a. Mountain top habitats

b. Urban parks

c. Caves

d. Sahara desert

11. Horses originated in North America and then migrates to Asiaand Europe. As they migrates, they evolved over many generationsinto the horse species we see today. This is an example of whichmigration type?

a. Diffusion

b. Jump dispersal

c. Secular migration

12. Horses went extinct in North American and did not returnuntil they were ferried in boats by European settlers (no landmammal can swim on its own across an ocean). From a horse'sperspective, the ocean barrier is best described as...?

a. Corridor

b. Filter

c. Sweepstakes route

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BIOC63H3 Lecture : BGYC63 Sept20

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