Thyrotropin-releasing hormone (TRH) 

Tripeptide

Stimulates secretion of TSH by thyrotropes

TLS Online TPP Program

#Id: 2197

#Unit 10. Ecological Principles

Characteristics of early and late seral stages

TLS Online TPP Program

#Id: 2198

#Unit 10. Ecological Principles

Character                         early stage         late stage 

Root to shoot ratio                    high             low

Number of seed                         many            few

Seed size                                     small            large

Biotic potential                           high             low

Productivity per biomass           high             low

NPP                                              high             low

P/R ratio                                        >1               =1

Nutrient cycling                       open             closed

Importance of detrivores          less              more

Stratification                               No               Yes 

Regeneration ability                 more              less

Resistance ability                        less              more

TLS Online TPP Program

#Id: 2199

#Unit 10. Ecological Principles

Restoration ecology is the full or partial repair or replacement of biological habitats and/or their populations that have been degraded or destroyed.

TLS Online TPP Program

#Id: 2200

#Unit 10. Ecological Principles

Complete restoration - Conservationists attempt to return a habitat to its condition prior to the disturbance.

TLS Online TPP Program

#Id: 2201

#Unit 10. Ecological Principles

Rehabilitation - Approach aims to return the habitat to something similar to, but a little less than, full restoration

TLS Online TPP Program

#Id: 2202

#Unit 10. Ecological Principles

Ecosystem replacement - replaces the original community with a different one