EE34 state of biodiversity

Question 1

CBD?

Answer 1

convention of biodiversity in 2002

Question 2

LPI?

Answer 2

living planet index
combo of time series (more than 10,000) and more than 2000 vertebrate species

LPI 2010 report-= decline in biodiversity

Question 3

LPI 2010 report results

Answer 3

Biodiveristy varies amongst regions
temperate = +29%
tropical= -70%

Incomewise
high=little change
medium=decline
low= 1 has become 0.6-0.2

vertebrate pops down by 30% since 1970

Question 4

Georgina mace

Answer 4

key in developing criteria for listing species in IUCN redlist. Emphasis on actual DATA not previous expert nominations

Question 5

Russel Lande

Answer 5

worked with georgina mace and was specialist for stochastic populations

Question 6

what is the IUCN red list?

Answer 6

most comprehensive information source on the global conservation status of animal, fungi and plant species and their links to livelihoods

Question 7

categories of IUCN red list

Answer 7

Extinct                     EX
Extinct in the wild   EW
Critically endangered CR
Endangered                EN
vulnerable                   VU
Near threatened          NT
Least concern             LC
 Data deficient             DD
Not evaluated               NE

Question 8

does least concern mean the population isn’t at risk of population crash?

Answer 8

NO. ie passenger pigeon demonstrates large populations can still go extinct

Question 9

what are the 5 criteria?

Answer 9

1) population reduction
2) geographic range (extent of occurence or area of occupancy)
3) small population size AND decline
4) very small/restricted population
5) quantative analysis (PVA)

Question 10

PVA?

Answer 10

population variability analysis

Question 11

what has PVA already been done on?

Answer 11

birds,mammals and amphibians
-full analysis to use numbers to put into multiple categories A-D
can be used to plot density of threatened species and see if those with high level of threat are in similar areas (they are not)

Question 12

what is population reduction based on?

Answer 12

quantitive values (cut off points)

Question 13

does area of occupancy show true range?

Answer 13

no, often underestimates

Question 14

what percentage of birds mammals and amphibians are threatened with extinction?

Answer 14

11% birds
25% mammals
33% amphibians

Question 15

how many species are critically endangered?

Answer 15

3900 ish

Question 16

what are the pros of the red list?

Answer 16

less data required
easy to understand
quick
practical
overprotective rather than under
can be converted to probabilities

Practical was meant to show red list= repeatable and robust

Question 17

what are the cons of the red list?

Answer 17

makes assumptions
not accurate
requires SOME data
species focus- (doesn’t account for large variation between species ie demes)
thresholds- just above/below are put in different categories

Question 18

RLI?

Answer 18

red list index
if groups have been assessed MULTIPLE TIMES
calculate % species up and % down then express as a RLI (steepness of slope shows rate of change)
this enables you to see overall decline or increase

Question 19

what does the RLI enable you to do?

Answer 19

see overall decline or increase

Question 20

what is there a current huge lack of info for?

Answer 20

insects

tropical plants

Question 21

did we reach 2010 target “to significantly reduce the rate of biodiversity loss by 2010”?

Answer 21

No.
rate of decline is STEADY at best
pressures are worsening
conservation attempts are increasing though

Question 22

why is a sampled red list useful?

Answer 22

if you pick a species from a represented taxa to get info tyou can produce a helpful representative measure on a species we know little about

Question 23

how do you produce something for the sample red list?

Answer 23

apply red list criteria to a representative sample of species
sample proportionally to biodiversity
choose species at random