3.2 K-Selected and r-Selected species

Do K selected species live in disturbed environments?

False

Is competition for resources in R-selected species habitats relatively high?

False

What do r selected species do to sustain species?

Produce large # of offspring

Explain why most Invasive species are r selected species?

They have high reproductive potential and grow and mature quickly.

Do R selected species live in disturbed environments?

True

Is competition for resources in K selected species habitats relatively high?

True

Explain why K-selected species are typically more adversely affected by invasive species than r selected species?

Typically specialists that have a low population growth rate. Invasive species are generalists that quickly reproduce and take over a habitat. R selected species are minimally affected by invasive species because they can easily switch to a different resource to avoid competition

What are examples of r selected species?

algae, bacteria, frogs, most insects, and many fish

Where do k selected species tend to be near?

carry capacity

Do r selected species tend to be generalist or specialist?

generalist

Where do k selected species typically develop?

inside their mothers where safe and born large

Are R selected species regular or irregular?

irregular

What happens to r selected species due to the lack of parental care?

many offspring die at young age

What happens after birth for k selected species?

mature slowly and cared for and protected by 1 or both parents

What is biotic potential?

maximum reproduction rate of a population in ideal conditions

What are carry capacity examples?

most mammals, elephants, whales, and humans, birds of prey, large and long lived plants

What do r selected species tend to be?

opportunistic

What does opportunistic mean?

reproduce when conditions are favorable

Do k selected species tend to be generalist or specialist?

specialist

r-selected species

species with a capacity for a high rate of population growth Tend to have short life spans and produce many usually small offspring and them little to no parental care

What should classifying species should be thought as?

spectrum

K-selected species

tend to reproduce later in life, have few offspring and have long life spans

What is the result of having a high reproductive potential for r selected species?

they are able to colonize areas easily and may outcompete native specialist species