Biodiversity, Species Interactions, and Population Control: Chapter 5

Why care about sea otters?

ethics

tourism dollars

keystone species

What is interspecific competition?

competition between individuals of DIFFERENT species

What is intraspecific competition?

Competition between individuals of the SAME species

What are ways that organisms reduce competition? 

hunting at night instead of day 

stratification 

marking territories 

diurnal

What does the competitive exclusion principle?

no two species can have the exact same niche

What are some ways species evolve to share resources? 

resource partitioning

using only parts of resource 

using at different times 

using in different ways 

What is predation?

is when one species feeds on another

What is the fastest animal?

Peregrine falcon; fly 238 mph

How can prey avoid capture?

speed = run, swim, fly

protections = shells, bark, thorns

Camouflage

Poison = chemical warfare

Warning coloration

Mimicry

Deceptive looks

Deceptive behavior

How can predators capture prey?

speed = walking, swimming, flying 

pursuit and ambush

Camouflage 

chemical warfare

cooperation 

prey tend to be old, sick, disabled, etc.  

What is coevolution?

the simultaneous evolution of two species