Lecture 31

These flashcards cover key concepts related to ecology, competition, and population dynamics as discussed in the lecture notes.

Metapopulation

A set of spatially isolated populations connected by dispersal, where source populations send out more migrants than they receive while sink populations receive more than they send.

Source Population

A population that sends out more migrants than it receives.

Sink Population

A population that receives more migrants than it sends out.

Extinction Rate (e)

The rate at which patches in a metapopulation go extinct.

Colonization Rate (c)

The rate at which new individuals colonize a patch in a metapopulation.

Exploitation Competition

Indirect competition where two species compete by depleting a shared resource.

Interference Competition

Direct competition where two species compete for access to a shared resource.

Apparent Competition

A situation where one species is negatively affected in the presence of a second species due to interactions with a third species.

Fundamental Niche

The theoretically possible set of resources that can be occupied by a species.

Realized Niche

The set of resources that is actually occupied by a species in practice.

Niche Partitioning

A process where no two species can occupy the exact same niche at the same time and space.