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TLS Online TPP Program

#Question id: 12576

Estimates of current rates of extinction

#Section 5: Applied Ecology & Evolution
  1. Indicate that we  have reached a  state of  stable equilibrium  in  which  speciation and extinction rates are approximately equal.
  2. Suggest that one-half of all animal and plant species may be gone by the year 2100.
  3. Indicate that rates may be greater than the mass extinctions at the close of the Cretaceous period. 
  4. Indicate that only 1% of all of the species that have ever lived on Earth are still alive.
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TLS Online TPP Program

#Question id: 11357

#Section 1: Ecology

In the Lotka-Volterra population models for predator and prey, what is the consequence of an increased birth rate of prey?
TLS Online TPP Program

#Question id: 12375

#Section 1: Ecology

When lichens grow on bare rock, they may eventually accumulate enough organic material around them to supply the foothold for later rooted vegetation. These early pioneering lichens can be said to do what to the later arrivals?
TLS Online TPP Program

#Question id: 10706

#Section 1: Ecology

Assuming community occupy by 4 species with number 10, 20, 10, 20. What is Shannon weaver index of that community?
TLS Online TPP Program

#Question id: 16890

#Section 3: Mathematics and Quantitative Ecology

A test of H0: μ = 0 versus Ha: μ > 0 is conducted on the same population independently by two different researchers. They both use the same sample size and the same value of α = 0.05. Which of the following will be the same for both researchers?
TLS Online TPP Program

#Question id: 10707

#Section 1: Ecology

Based on the intermediate disturbance hypothesis, a community’s species diversity is increased by