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Midterm

TEST 5 study notes.docx

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Department
Geography
Course Code
GEOG 1400
Professor
Taly Drezner

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Physical Geography 1400 Study notes
Coral Reefs stay within the equator
Kelp stay near colder water
Species range is limited by a number of environmental factors
Exp. Temperature and salinity
Includes all biotic (living) and abiotic (nonliving)
Niche Concept
The specific area where an organism inhabits
The role or function of an organism or species in an ecosystem
The interrelationship of a species with all the biotic and abiotic factors
affecting it
Potential ranges- (including invasive species)
Environments where a species could live
Zebra mussels in the 5 great lakes an invasive specie
Asian long-horned beetle
Actual Range: (where the species actually live)
Areas of natural occurrence
Barriers may restrict spread of habitat areas
Dandelions can live anywhere
Endemic:
Restricted to a geographical area
Taxon:(Taxa, plural)
Groups of organisms that area related to each other
Distjunct distributions:
Animals that are scattered all around the world in different places (cant
beside by side)
Fairly recent common ancestors (alligators, Crocodiles)
May have been continuous in the past but discontinuous now.
Dispersal:
Movement or spread of seed to new location
Pregnant female or mating pair can start new life
Vicarine:
Population split by outside forces
Splitting continents from shifting plate tectonics (extinctions may have
caused)
Rising mountains
Climate change
Rising and falling sea levels
Evolutionary relicts:
Once widespread and now out competed
Magnolias today (threated to be extinct)
Glacial Relicts:

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Description
Physical Geography 1400 Study notes  Coral Reefs stay within the equator  Kelp stay near colder water Species range is limited by a number of environmental factors  Exp. Temperature and salinity  Includes all biotic (living) and abiotic (nonliving) Niche Concept  The specific area where an organism inhabits  The role or function of an organism or species in an ecosystem  The interrelationship of a species with all the biotic and abiotic factors affecting it Potential ranges- (including invasive species)  Environments where a species could live  Zebra mussels in the 5 great lakes an invasive specie  Asian long-horned beetle Actual Range: (where the species actually live)  Areas of natural occurrence  Barriers may restrict spread of habitat areas  Dandelions can live anywhere Endemic:  Restricted to a geographical area Taxon:(Taxa, plural)  Groups of organisms that area related to each other Distjunct distributions:  Animals that are scattered all around the world in different places (cant beside by side)  Fairly recent common ancestors (alligators, Crocodiles)  May have been continuous in the past but discontinuous now. Dispersal:  Movement or spread of seed to new location  Pregnant female or mating pair can start new life Vicarine:  Population split by outside forces  Splitting continents from shifting plate tectonics (extinctions may have caused)  Rising mountains  Climate change  Rising and falling sea levels Evolutionary relicts:  Once widespread and now out competed  Magnolias today (threated to be extinct) Glacial Relicts:  Plants or animals widespread during ice ages now scattered in far north and on mountains Alfred Russel Walace and father of modern of biogeography  Zoologist created the evolution theory with Charles Darwin  Studied animals Bali and Lombok is separated by less than 100km of water Bali has South East Asian mammals Lombok has fewer mammals more of an Australian origin Wallace Line: The hypothetical boundary between the Oriental and Australasian zoogeographical regions, which runs between the Indonesian islands of Bali and Lombok Webers Line:  Australia’s continental shelf Adaptation and convergence  General principles: (genetic diversity)  Variability in all populations  Individuals express genetic traits  Interact with environments
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