What is the term for the maximum population size that an environment can sustain?
Carrying Capacity
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
A bee pollinating a flower is an example of what type of symbiotic relationship?
Mutualism
A population growing at 4% will double in how long?
17.5 years
Invasive species are most commonly what type of species?
generalist and r-selected
What is the maximum growth a population could achieve with unlimited resources and ideal conditions?
Biotic Potential and/or Exponential Growth
What is a common characteristic of an r-selected species?
Ecosystems will be impacted greatly if you remove what from their food web?
Keystone species
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%
These species are often most vulnerable to endangerment and environmental change because of their adaptations to narrow habitats and food sources
specialist species
Name one density-dependent factor that can limit population growth.
competition, predation, disease, space, water, food etc.
What is a common characteristic of a K-selected species?
Caring for offspring, few offspring per year/lifetime, Lower infant mortality
An organism in a food web/chain going extinct may result in this.
A trophic cascade
73.3%
answers will vary
Name one density-independent factor that can limit population growth.
extreme weather events, drought etc.
Can eat a variety of foods and are very adaptable to environmental change
generalists
Ecosystems that are more likely to rebound from environmental stressors have a lot of what?
biodiversity
18,162.4 individuals/mi2
Describe one way invasive species can be introduced
answers will vary
This happens when populations run out of resources and before they level out at the carrying capacity
population overshoot
Very picky eaters that are very susceptible to habitat loss or change in environmental conditions
specialist species
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
An ecosystem has a primary producer biomass of 26,000 kg/km2. What is the biomass of the tertiary consumers?
26 kg/km2
What is one strategy humans can implement to protect endangered animal populations?
criminalizing activities that decrease numbers, protecting habitats, legislation etc.