The population density of a particular insect species was determined to be 15,000 adults per hectare in the summer of 1996, 21,000 adults per hectare in the summer of 1997, and 29,400 adults per hectare in the summer of 1998. Based on these population estimates, what is your estimate of λ, the annual rate of geometric growth?

#Question id: 11248

#Section 1: Ecology

Which factor could not be considered a factor of environmental resistance?

#Question id: 11249

#Section 1: Ecology

Choose the density-dependent factor that will slow population growth as population size increases.

#Question id: 10688

#Section 1: Ecology

For two species A and B in competition, the carrying capacities, competition coefficients, per capita growth rate and population size are

KA = 1000           KB = 1200    α of B= 1     β of A= .5       rB= .5         r A= .3                

AN= 500                  BN= 200

According to the Lotka-Volterra model, what is growth rate of species A?

#Question id: 10690

#Section 1: Ecology

Which of following interaction shown in following species of Paramecium?

#Question id: 10693

#Section 1: Ecology

The diagram represents competition between species 1 and species 2 according to Lotka-Volterra model of competition

Given the conditions in the diagram, the predicted outcome of competition is

#Question id: 10696

#Section 1: Ecology

In a new area two species A and B was discovered and taking energy from another species X and Y respectively. Following some is life history trait of species.

I- A species is often larger than X

II- Each A species taking energy from many X

III- One Y usually supports populations of B species

IV- Fatality of Y is Mild to severe

Which of the following is correct observation of above species?