White Bark Pine Communities/Chapters 3 and 4

Conservation Biology

Please define the following terms:

potential niche -

unrealized niche -

subnivian -

cryochrepts -

loess -

physiological niche -

krummholz -

1. Festuca idahoensis is a species you woudl find in a _______________.

2. Pinus ponderosa is found in ______________ habitats.

3. What is the average annual precipitation level in whitebark pine habitats?

4. What is the average annual preciptation level in grassland habitats?

5. Why are alpine soils high in organic carbon underneath P. albicaulis?

6. How is the realized niche determined?

7. Are whitebark pines shade tolerant?

8. High winds can reduce photosynthesis in P. albicaulis?

9. Why are clay contents in soil at high elevations very low?

10. ______ ____________ during this century has resulted in a decrease in the establishment of new whitebark pine communities.