Live, Attenuated Vaccines Microorganisms can be attenuated or disabled so that they lose their ability to cause significant disease but retain their capacity for transient growth within an inoculated host.

TLS Online TPP Program

#Id: 3721

#Unit 10. Ecological Principles

Gleason’s individualistic model - Competition does not cause sharp boundaries; different species do not group together due to physical variables.

TLS Online TPP Program

#Id: 3722

#Unit 10. Ecological Principles

TLS Online TPP Program

#Id: 3723

#Unit 10. Ecological Principles

Species richness - which is a count of the number of species.

TLS Online TPP Program

#Id: 3724

#Unit 10. Ecological Principles

One major problem is that this approach does not take species frequency of occurrence or relative abundance into account.

TLS Online TPP Program

#Id: 3725

#Unit 10. Ecological Principles

Berger-Parker index - Dominance indices are weighted toward the abundance of the commonest or dominant species
D_BP = N_max /N

TLS Online TPP Program

#Id: 3726

#Unit 10. Ecological Principles

More diverse communities have a lower value of D BP than less-diverse communities.