Intro to biogeography

Biogeography is the scientific study of _____

Biogeography is the scientific study of spatial patterns of biological diversity.

Biogeographers ask questions relating to:

• Why are ___ as they are?

• What ___ were involved?

• What factors affect ____ and overall ___ of organisms?

Why are organisms distributed as they are? What processes were involved? What factors affect species diversity and overall abundance of organisms?

Thus, studying:

1. Patterns of ___ and abundance, and

2. The ___ affecting these ____

This information can be applied toward predicting ___ and the ____ of organisms to various changes.

Patterns of distribution and abundance, and the processes affecting these patterns. This information can be applied toward predicting future changes and the adaptability of organisms to various changes.

1. Biogeography is very much an ___ and ____ science.

2. What other scientific disciplines is it interrelated with?

3. Biogeography is primarily dependent on ____ data

Biogeography is very much an integrated and synthetic science. Geography and ecology. Biogeography is primarily dependent on observational data.

Scope of Course:

1. Focus on the factors affecting ____ of organisms.

2. In doing so, learn some of the _____

Focus on the factors affecting distribution of organisms. In doing so, learn some of the biogeographical patterns.

The Big Picture:

Factors affecting ____ are a combination of ___ and ____ factors, both ___ and ____.

Factors affecting distribution are a combination of biotic and abiotic factors, both historical and present.

Ecological biogeography:

Primarily deals with ____ patterns in relation to ____ conditions.

(extant = ____)

Primarily deals with current distribution patterns in relation to ecological conditions. (extant = still existing)

Historical biogeography = paleobiogeography

Primarily deals with distribution of _____, including how _____ and _____.

Primarily deals with distribution of past organisms, including how past taxa originated and dispersed.

Vicariance biogeography:

Emphasis is on new _____ previously _____ populations.

Emphasis is on new barriers separating previously connected populations.

Dispersalist biogeography = migrationist biogeography

Emphasis is on species _____ across a “_____”.

Emphasis is on species dispersing across a “barrier”.