Biogeo 3-15

Front 1

Beringia

Back 1

Around during the Pleistocene due to glaciation. Land mass connecting Alaska and Siberia (Eastern Europe). It was a corridor for dispersal where animals from Alaska could make it over to Siberia and vice versa.

Front 2

Corridor

Back 2

filter, allows animals to get from place to another

Front 3

Barrier

Back 3

blocks animals from getting from once place to another

Front 4

Relict

Back 4

relict is a population
Relict is talking about the population of species

Front 5

Refuge

Back 5

refuge is a place
and the refuge is where the animals are stuck

Front 6

Endemism

Back 6

where a species is limited and where it is from

Front 7

Allopatric Speciation

Back 7

two species living in same area, overtime a mountain range forms, the population splits into two, the mountain in a barrier and the species become to speciate. (mountains, oceans, deserts) changing species Ex. Squirrels in the Grand Canyon, the barrier is the canyon
Spotted cowry: allopatric speciation, barrier is the Isthmus of Panama

Front 8

Hybrid

Back 8

overtime, after the barrier is gone, the 2 species once separated that have changed over time and these animals mate and a hybrid is born (liger, tigon)

Front 9

Sympatric Speciation

Back 9

1 species speciates even though they live together, continuous population, genetic mutation. 2 species diverge due to genetic defect.

Front 10

Autopolyploid

Back 10

100 tulips in the same flower bed, flowers can self-fertilize, one flower, self-fertilizes itself. Non disjunction event during meiosis
Ex. Tomatoes, fruits

Front 11

Disjunct species

Back 11

species in evolutionary stasis
Sweet gum trees in Asia and N. America
2 populations of same species are separated by a large area or distances are known as disjunct species. TRUE

Front 12

Evolutionary Stasis

Back 12

small change over a long time
Ex. Oak trees and maple trees: species in evolutionary stasis

Front 13

Cryptic

Back 13

species that look identical but are genetically different
Ex. 2 flowers have same morphology but have different genetics,

Front 14

Morphology

Back 14

physical characterstics

Front 15

Great American Interchange

Back 15

The Isthmus of Panama forms North America and South America together
Animals can go freely from North American to South America and vice versa
****More animals from North America go to South America
Mammals in North America outcompete mammals in South America
More extinction of South American of native mammals than in North America
****Primates got to Africa from South America is island hopping
Mammoth Steppe: the Siberian part of Beringia apart from the landmass

Front 16

Mammoth Steppe

Back 16

the Siberian part of Beringia apart from the landmass

Front 17

Mielke

Back 17

in the Pleistocene, Beringia existed. There was a similar land mass between England and Europe

Front 18

SLOSS

Back 18

single large or several small Who contributed to it?
Jared Diamond, Simberloff

Front 19

Where did Lovejoy do his work?

Back 19

amazon

Front 20

How are the mountains in Europe?

Back 20

east to west

Front 21

How are the mountains in North America?

Back 21

north to south

Front 22

Did dinosaur bones give evidence of glaciation?

Back 22

no