coral Flashcards
1
Q
how many species rely on coral?
A
128
2
Q
name of the photosynthetic symbionts?
A
zooxanthellae
3
Q
reefs in asia contribute to what proportion of fish catches? and feeds how many?
A
1/4
1 billion
4
Q
how much tourism money does the great barrier reef generate?
A
3 billion
5
Q
climate change stats?
A
- sea temp risen by 0.75
- sea level rise of 17cm
- ph of ocean reduced by 0.1
- carbonate ions reduced by 30 umol kg-1
- co2 now at 380 ppm used to be 300ppm
6
Q
future prediction of stats?
A
global temp to rise by 2oc
co2 to reach 500ppm
7
Q
what does coral bleaching lead to?
A
high mortality
depressed colony growth
reduced reproduction among survivors
8
Q
drop in growth rate of great barrier reef over 16 years?
A
20%
9
Q
citations for coral?
A
mumby 2007
pandolfi 2011
