Community Interactions: Competition (-/-) exam Flashcards

When two or more organisms vie for the same limited resource, negatively impacting their fitness.

It states that two species with identical niches cannot coexist indefinitely; one will outcompete the other, leading to local extinction.

Competition where the impact on competing organisms is equal, with no clear winner or loser.

Competition where the impact is unequal, with a clear winner and a clear loser.

Both competing organisms experience a decrease in fitness due to the energy and time spent competing.

A species' ecological role, including its interactions, resource utilization, and the conditions it can tolerate.

The exclusion of a species from a particular area or community due to competition.

When species with partial niche overlap coexist by utilizing different resources, reducing competition.

The full theoretical niche a species could occupy without competition.

The smaller portion of the fundamental niche that a species actually occupies due to competition.

The evolution of distinct traits in competing species to minimize competition.

The beak depth variation in Galapagos finches to reduce competition for seeds.

When organisms directly interact and compete for the same resource.

When organisms compete for the same resource without direct interaction.

Competitive exclusion, where the weaker competitor is driven to local extinction.

When species' niches overlap only partially, allowing for resource partitioning.

Both species show diminished growth when competing, compared to when they grow alone.

Paramecium species shifting from their fundamental niche to a realized niche to coexist.

It reduces competition, which is favorable for both competing species.

A decrease in fitness for both competing organisms.

Two species with completely overlapping niches cannot coexist indefinitely.

Competing organisms must spend energy and time, reducing their overall fitness.

Local: species excluded from a specific area. Global: species wiped off the planet.

Resource partitioning, where species utilize different resources.

Weaker competitors may shift to a realized niche or face local extinction.

Character displacement, where species evolve distinct traits to reduce competition.

Paramecium aurelia outcompeting Paramecium caudatum, leading to the latter's local extinction.

Both species show diminished growth compared to when they grow alone.