Log in
Biology
1
answer
0
watching
124
views

What do ecological descriptions of communities – species richness,relative abundance, species diversity – tell us about interactionsbetween species? Relative stability or health of the communitythrough time?

Watch
1
answer
0
watching
124
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Beverley Smith
Beverley SmithLv2
29 Sep 2019

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share

Related textbook solutions

Molecular Cell Biology
8 Edition,
Lodish
ISBN: 9781464183393
Biology: Science for Life with Physiology
6 Edition,
Belk
ISBN: 9780134555430
Biology
2nd Edition, 2013
Openstax
ISBN: 9781947172517
Concepts of Biology
OER Edition,
Openstax
ISBN: 9781938168116
Essentials of Biology
5 Edition,
Mader
ISBN: 9781259660269

Related questions

1. What is a “lognormal” distribution? Have you heard this kind of a distribution under a different name?

Lognormal distribution is a distribution of relative abundances of species by plotting the abundance of species as a frequency distribution in which each abundance interval is twice the preceding one (1, 2, 4, 8).

-It is a statistical expectation

-Product of many random environmental variables acting on the population of species

2. Why would a species survey with a greater sample size show a more complete lognormal distribution than a survey with a smaller sample size?

3. What two factors are considered in a quantitative diversity index? How do these factors differ from each other?

4. Explain how environmental heterogeneity can generate both aquatic and terrestrial plant diversity.

5. Consider the intensity of some disturbance in a community along a gradient (low… medium… high intensity). Use a “Goldilocks and the Three Bears” analogy to explain how species diversity can be shaped by disturbance along such a gradient.

1. What is your null (H0) hypothesis?

2. What is your alternate (HA) hypothesis?

3. Calculate the CCj for these two sites (Remember: one number for both sites, not one CCj for each site!).

4. What does this CCj value tell you?

5. What is the H value for:

a. the meadow: b. the forest:

6. Which site has a greater species richness how do you know?

7. Which site has a greater species diversity and how do you know?

8. Did you “Reject” or “Fail to Reject” your null hypothesis and why?

9. Please attach a SW table for each of the two sites.

  1. Children today are sometimes characterized as nature-deficient.What do you think this means? How can this be addressed?
  2. How do the physical, cultural, and educational barriersseparating children from nature differ in rural, suburban, andurban communities?
  3. Locate an article or website about sustainability andsustainable communities. Provide a brief summary of the effortsbeing made by a particular community, why the efforts wereundertaken, and the expected results.
  4. Choose an endangered animal or plant species and list what isbeing done to protect that species. List a web address thatexplains efforts to protect this species. Be sure to tell whetherthis species is valued for its instrumental or its intrinsicvalue.
  5. Do you think food aid is a good policy for the United States toadopt in regards to foreign countries? Consider the economic,ecological, and social impacts and address these in youranswer.
  6. Find out some information about faith-based initiatives in theUnited States or overseas. How has the work of these groups lead toan ethic that reforms the culture or redeems creation?

Weekly leaderboard

Home
Homework Help 3,900,000
Biology 460,000
Start filling in the gaps now
Log in