Unit 2 : The Living World : Biodiversity : Review

An event, such as storm, fire, flood, drought, overgrazing or human activity, that changes a community and alters resource availability.

• Natural Disruptions
• Episodic Time Scale
• Periodic Time Scale
• Anthropogenic Distruption

How close in numbers each species in an environment is

• Species Evenness
• Species Richness
• Biodiversity
• Biomass

A system formed by the interaction of a community of organisms with their physical environment (abiotic and biotic factors)

• Ecosystem
• Habitat
• Niche
• Climate

The number of different species in an area

• Species Biodiversity
• Genetic Biodiversity
• Habitat Biodiversity
• Species Evenness

The range of genetic material (DNA) present in a gene pool or population of a species.

• Genetic Biodiversity
• Species Biodiversity
• Habitat Biodiversity
• Relationship Biodiversity

The number of different species in a community

• Species Richness (aka: Species Biodiversity
• Species Evenness
• Taxa
• Biomass

the different kinds of habitats in a given unit area

• Habitat Biodiversity
• Genetic Biodiversity
• Species Biodiversity
• Relationship Biodiversity

an environmental disturbance (natural disaster/human caused habitat destruction) that drastically reduces population size & kills organisms regardless of their genes

• Population Bottleneck
• Gene Flow
• Founder Effect
• Mutation

Species with a narrow ecological niche. They may be able to live in only one type of habitat, tolerate only a narrow range of climatic and other environmental conditions, or use only one type or a few types of food.

• Specialists
• Generalists
• Endemics
• Invasives

Species with a broad ecological niche. They can live in many different places, eat a variety of foods, and tolerate a wide range of environmental conditions.

• Generalists
• Specialists
• Endemics
• Endangered