land bridges
Natural intercontinental pathways
Land bridges are strips of land connecting two larger landmasses, allowing migration of animals and humans between continents.
The Bering land bridge once linked Asia to North America during ice ages when sea levels dropped.
Figuratively, anything that connects separated regions or groups: The treaty served as a land bridge between former enemies.
Spreading in many directions
- prehistoricBefore documented civilization
- megafaunaSpecies over 44 kilograms
- colonizationForeign territorial takeover
- faunaAnimal life collectively
flora · peopling · Out of Africa · mammoth · mastodon · corridor · pathway · intercontinental
Native to one area
- biodiversityRange of life forms
- gene flowAllele transfer between populations
- zoogeographyStudy of animal distribution
- Wallace LineZoogeographic boundary in Indonesia
Narrow strip connecting landmasses
- BeringiaFormer land connecting continents
- continental shelfSubmerged perimeter of landmass
- glaciationIce sheet spreading process
- sea levelElevation reference point
tectonic · formation · strait · peninsula · erosion · sediment · submergence · emergence
Random allele frequency change
- population bottleneckDrastic reduction limiting hereditary variety
- insularNarrow in outlook
- endemic speciesLife found nowhere else
- fragmentationBreaking into smaller pieces
Human-made historical objects
- settlementsEstablished communities or agreements
- excavationAct of unearthing
- PaleolithicEarliest archaeological era
- MesolithicMiddle stone era
Neolithic · stratigraphy · carbon dating · fossils · Homo sapiens · stone tools · hunter-gatherers · encampment
dispersal
Spreading in many directions
- prehistoricBefore documented civilization
- megafaunaSpecies over 44 kilograms
- colonizationForeign territorial takeover
fauna · flora · peopling · Out of Africa · mammoth · mastodon · corridor · pathway · intercontinental · route
endemic
Native to one area
- biodiversityRange of life forms
- gene flowAllele transfer between populations
- zoogeographyStudy of animal distribution
isthmus
Narrow strip connecting landmasses
- BeringiaFormer land connecting continents
- continental shelfSubmerged perimeter of landmass
- glaciationIce sheet spreading process
sea level · tectonic · formation · strait · peninsula · erosion · sediment · submergence · emergence · Ice Age
genetic drift
Random allele frequency change
- population bottleneckDrastic reduction limiting hereditary variety
- insularNarrow in outlook
- endemic speciesLife found nowhere else
artifacts
Human-made historical objects
- settlementsEstablished communities or agreements
- excavationAct of unearthing
- PaleolithicEarliest archaeological era
Mesolithic · Neolithic · stratigraphy · carbon dating · fossils · Homo sapiens · stone tools · hunter-gatherers · encampment · archaeological site
- island ecologyoceanic islands, endemic species, archipelago, archipelagos, atoll
- Island Biogeographyendemic species, colonization, oceanic islands, volcanic islands, atolls
- landscape connectivitywildlife corridors, connectivity, corridors, habitat fragmentation, dispersal
- paleogeographyPangaea, paleogeography, Gondwana, supercontinent, continental drift
- ancient routesriver routes, mountain passes, desert trails
- Messinian Crisis
land, bridge, lands, landscape, bridges, bridging, land bridge, bridgehead