Ecology Mastering Biology Questions

How much energy is passed onto the next tropic level?

5-10%

Mark and Recapture: 200 initially marked, 150 recaptures, 50 were marked

600

What human activity has the most direct impact on the global water cycle?

Building city streets and sidewalks

Why does it take 10x more energy to grow a kg of beef than a kf of wheat?

Cattle only integrate 10% of their food into the biomass

What is the most efficient food source to consume?

Fish

Who did a study about metamorphosis over time?

Hanski

What would life tables constructed in ancient Rome be different than those constructed for today's Romans?

The fecundity of todays are lower

Wolves produced effects on all lower tropic levels?

Tropic Cascase

What habitats are the most productive?

Tropical rain forest coral reefs

Net Reproductive rate is 1. What type of survivorship is it?

Type II

What allows for a human population to continue to increase despite decreased fertility rates?

as long as the average fertility is above the replacement rate

What describes the coevolutionary arms race?

consumption driving the evolutionary escalation of species traits

What would urbanization cause in regards to the richness of a habitat?

decrease immigration increase rate of extinction

Removing a keystone species causes:

drastic changes in diversity

How may a conservation biologist apply the theory of island biogeography in a national park?

ensuring large patches of forests are left undisturbed

What is the combination of resources or areas used or condition tolerated in the absence of competitors called?

fundamental niche

What best explains hare and lynx population cycles?

interaction between food availability and predation intensity

What conditions lead to LOW decomposition

lack of O2