Coral reef Flashcards

1
Q

what’s a coast

A

productive ecosystem/habitat

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2
Q

main coast settings

A

estuaries, coral reef, lagoons, salt marshes, mangroves

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3
Q

what are coral reefs made of

A

carbonate secreting organisms, from loose to cemented shells

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4
Q

where’s the living part

A

thin layer at surface

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5
Q

can it resist waves

A

yes

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6
Q

what group to corals belong to

A

phylium cnidaria

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7
Q

what’s the animal in the coral

A

polyp

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8
Q

where is it found

A

exoskeleton

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9
Q

what’s exoskeleton called

A

corallite

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10
Q

what’s the exoskeleton made of

A

polyp

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11
Q

what producers are corals

A

primary producers

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12
Q

what relationship do corals have with algae

A

mutualistic relationship

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13
Q

what is it for

A

photosynthesis

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14
Q

what’s the algae called

A

zooxanthellae

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15
Q

what does coral/algae provide

A

coral provides protection/nutrients, algae provides oxyegn/sugar

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16
Q

solitary/colonial coral

A

solitary (one polyp), colonial (multiple)

17
Q

where do corals thrive

A

warmer waters than 20C, nutrient poor

18
Q

where don’t they thrive

A

brackish/fresh water, high turbidity currents

19
Q

where are corals found geographically

A

either side of equator

20
Q

types of coral

A

brain/encrusting/branching

21
Q

algal ridge

A

windward size, lots of waves, no corals

22
Q

buttress zone

A

reef slope down from algal ridge

23
Q

reef face

A

down from buttress zone, less colonial corals

24
Q

reef terrace

A

lots of corals, landward from algal ridge

25
coral growth
up towards light
26
3 reef stages occur due to
rising/falling sea levels
27
fringing reef
first stage, limestone shorelines
28
barrier reef
sea levels rise and corals grow up, lagoon grows and cuts off fringing free from shore
29
atoll
last stage, land falls and rings form around lagoon