LEC 14 - IAN STERLING POLAR COMM Flashcards
what is the arctic? what is antarctica?
the arctic is the ocean, antarctica is the landmass
how is the endemism in the arctic compared to antarctica
low; high
what are the key species in the food chain?
arctic cod in arctic; krill in antarctica
what are the coat colours like in the arctic vs antarctica? why?
white vs brown/black. antarctica does not need camo bc there is no land predators
what is a polyna? are they transient? are they present in both arctic and antarctica?
large openings in the ice where communities are found - the main ones last year round. they are present in both the arctic and antarctica
what is antarctic convergence?
areas of cold water which mix w warm water, forming a strong current that is great for mixing (high productivity)
who are the main violators of antarctica?
leopard seals
what is predator swamping?
when there are so many members of a pop that realistically a predator can go crazy and not even make a dent in the pop #s
what are crabeater seals adapted to eat?
krill LOL
