Shared Flashcard Set

Details

Ecology Test 2
sections 5-8
14
Biology
Undergraduate 2
03/03/2014

Additional Biology Flashcards

 


 

Cards

Term
Biodiversity
Definition

variety of organisms including their unique attributes

e.g. genetics, adaptations, and species interactions

Term

How many species been indentified?

 

how many have been estimated to exist? 

Definition

2 million

 

10-30 million

Term
Biodiversity _____ towards the equator
Definition
increases
Term

Biodiversity increases towards the equator

 

greater speciation(evolutionary process by which new species arise) and less extinction

Definition
Time since Pertubation
Term

Biodiversity increases towards the equator

 

Productivity( energy-diversity)

Definition
more ENERGY available to share among organisms
Term

Biodiversity increases towards the equator

 

Environmental heterogeneity

Definition
environment provides a greater number of niches(habitats)
Term

Biodiversity increases towards the equator

 

Favorableness

 

Definition
minimal environmental stress
Term

Biodiversity increases towards the equator


Niche Breadth

Definition
niches overlap more or are narrower
Term

Biodiversity increases towards the equator


Greater Tropical land area which increases ______ and reduces extinction

 

Definition
Speciation
Term

Biodiversity increases towards the equator


Richness ______ with latitude away from equator

 

Definition
decreases
Term

Biodiversity increases towards the equator


Speciation

Definition
evolutionary process by which new species arise (extinction is reverse of this)
Term

Biodiversity increases towards the equator


Temperate forest of east asia

Definition
far richer in species than those of europe and North America; greater percentage of tree genera extinct in Europe than E asia and eastern north america--cause by glaciation
Supporting users have an ad free experience!