Community Ecology Quiz review

This town ain't big enough for the both of us

100

What is the term for the maximum population size that an environment can sustain?

Carrying Capacity

200

What is the maximum growth a population could achieve with unlimited resources and ideal conditions?

Biotic Potential and/or Exponential Growth

300

Name one density-dependent factor that can limit population growth.

competition, predation, disease, space, water, food etc.

400

Name one density-independent factor that can limit population growth.

extreme weather events, drought etc.

500

This happens when populations run out of resources and before they level out at the carrying capacity

population overshoot

I will survive

100

What is the term for a species that has a high mortality rate early in life but few survive to adulthood? (r or k)

r-selected species

200

What is a common characteristic of an r-selected species?

Having a lot of offspring and providing little care. Organisms of this strategy are typically smaller and have a shorter lifespan

300

What is a common characteristic of a K-selected species?

Caring for offspring, few offspring per year/lifetime, Lower infant mortality

400

Can eat a variety of foods and are very adaptable to environmental change

generalists

500

Very picky eaters that are very susceptible to habitat loss or change in environmental conditions

specialist species

#codependent #hangry

100

A bee pollinating a flower is an example of what type of symbiotic relationship?

Mutualism

200

Ecosystems will be impacted greatly if you remove what from their food web?

Keystone species

300

An organism in a food web/chain going extinct may result in this.

A trophic cascade

400

Ecosystems that are more likely to rebound from environmental stressors have a lot of what?

biodiversity

500

Cordyceps fungus infect ants and takes over their brains to move to a more suitable environment for fungus growth. This is what symbiotic relationship? 

Parasitism

A moment for math

100

A population growing at 4% will double in how long?

17.5 years

200

In one year a population of 5000 has 100 births, 80 deaths, 15 immigrants and 5 emigrants. What is the percent growth rate for that year?

0.6%

300

In 2000 the population of pandas world wide was 1500. Today it is around 2600. What is the percent change in the population in the past 5 years?

73.3%

400

New York is 468 mi² and has a population of 8.5 million. What is the population density of this state?

18,162.4 individuals/mi²

500

An ecosystem has a primary producer biomass of 26,000 kg/km². What is the biomass of the tertiary consumers?

26 kg/km²

invader or see u later

100

Invasive species are most commonly what type of species?

generalist and r-selected

200

These species are often most vulnerable to endangerment and environmental change because of their adaptations to narrow habitats and food sources

specialist species

300

List 2 factors that could lead to a species becoming endangered

answers will vary

400

Describe one way invasive species can be introduced

answers will vary

500

What is one strategy humans can implement to protect endangered animal populations?

criminalizing activities that decrease numbers, protecting habitats, legislation etc.