Stats T4 Flashcards
How much kelp forests do Aus support
800km
Biodiversity in kelp forests
85% temperatre fish, 95% of molluscs, 90% of sea stars are unique to kelp
Tas loss of forests
95%
Water temp has risen by
1-2 degrees ince 1950s
kelp covers…
25% of worlds coastlines
How much fo worlds forests have declined over past 50 years
38%
In US, Nortern Calfornia, kelp canopies have delcine more than…
95% in 2014-15 marine heat wave, longest ever recorded on 226 days
By 2100, average loss of … canopy forming seaweeds in Aus
62%
GSR how many psies are endmeic to region
77%
exmaples of endemic species in GSR
Giant Aus cuttle fish, Austrlaian fur seal, Weedy seadragon
How long is the GSR
8100km
Species number in GSR
731 fish spcies, 4100 intervertebrates, 978 seaweed species
How much of Australisn live wihtin 50km of GSR
70% (16 million)
How much of kelp forests in GSR show bleaching symtoms
50%
2011 WA marine heat wave
what temp did coastline reach
2-6 degrees above average
WA 2011 marin heatwaves
forests decline in 2013
43%
South Kalbarri status of kelp forests after marine heat wave WA 2011
100% have been lost in the 100km zone from South of Kalabarri
Climate change increase in temp stat
1 degree increase in global average temp since pre industrial time (1900)
how much of heat and cabron does oceans absorb
Heat: 90% between 1971-2010
Carbon: 30% since pre indisutrial times
area of kelp bleaching in aus
soltitary islands marine park 2002-2011 due to EAC strength
Sea urchins went from 3% of east coast fo Tas to
20% and 40 million urchins since 1978
Southern rock lobster valued at
250 million to fisheries
Stocks of southern rock lobster is less than
10% of natural levels in 2011-12
Northern pacific sea stars account for (biomass)
54% of fish biomass in Port Phillip Bay
until early 1990s, sydney beaches polluted
up to 1 billion litres epr day, untreated sewage
what did sydney sewage dumping do to biodiveristy
disapearance of caryweed during 1980s from Palm Beach to Cronulla
