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Flashcards in Selecting Species To Save Deck (48)
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1

What does the Telipogon ampliflorus orchid do

Pumps out pheromones to attract insects with sex - barrow thermal range

2

What is the criteria for selecting species for consecration

Instrumental use
Intrinsic value
Ecological value
Uniqueness
Level of threat

3

What are the extinction threat categories from the IUCN red list

Extinct (EX)
Extinct in the wild (EW)
Critically endangered (CR)
Endangered (EN)
Vulnerable (VU)
Near threatened (NT)
Least concern (LC)


Data deficient (DD) and Not evaluated (NE)

4

How do the IUCN provide their red list

What is the likelihood of a species becoming extinct in the near future, given current knowledge about population trends, range and recent, current or projected threats

5

What does the IUCN stand for

International Union for Conservation of Nature

6

What does extinct mean

When there is not doubt that the last individual has died

7

Example of a species that was thought to be extinct but reducscovwrwd

lzarus species
Largest bee in the world in Indonesia (magachile Pluto)

8

What does extinct in the wild mean

When it is known only to survive in captivity or as naturalised population well outside the past range

9

Example of critically endangered species

Mountain gorilla
Franklin’s bumblebee

10

Example of endangered species

Tasmanian devil
Giant panda

11

Example of vulnerable species

African elephant
Rosalia longicorn beetle

12

What does IUCN data allow us to measure

The trend of threatened species and if it continues

13

What are the extinction criteria for critically endangered animals

>80% decline over last 10 years.
>10km2 occupancy
>25% decline expected over 3 years
<50 mature individuals
50% extinct in last 10 years

14

What are the extinction criteria for endangered animals

50% decline
>500km2
>20% decline over 5 years
>250 immature indicualas
20% in 20 years extinct

15

What are the extinction criteria for vulnerable animals

20% decline
<2000km2
0% decline expected in 10 years
<1000 individuals
10% probability of extinction in 100 years

16

How to measure extinction threat

Observed/expected/historical decline in numbers.
Geographical area occupied.
Number of populations.
Number of living and breeding individuals.
Known threats and their trajectory.

17

Problem with measuring extinction threat

Data is often highly incomplete

18

What does IUCN say about limited data

We shouldn’t allow it to be an excuse for inaction

19

What are different data sources

Observed
Estimated
Projected
Inferred
Suspected

20

Example of an animal to consider assessments at different scale

Red squirrel is endangered in England. Vulnerable in Britain and least concern worldwide

21

What are some pros of species based conservation

Species more discrete entitles than ecosystems.
Convenient for monitoring.
Public interest in species.

22

Cons of species based conservation

Little known about most species.
Causes taxonomic bias (vertebrates and higher plants)

23

Why is there taxonomic bias

Because we rely on public interest and volunteers to do the research there’s taxonomic bias as individuals can’t be bothered to go through the processes if they don’t care about the animals

24

What is the criteria for selecting areas for consecration

Size of the area
Intactness
Site condition
Level of threat
Habitat rarity
Fragility / vulnerable to change
Biodiversity

25

Example of size of the area having an impact

No. Of reptiles and amphibians on a W. Indian island increase with island size

26

Example of intactness having an impact

In the Amazonian region

27

Example of rarity having an impact

Costa Rica has suffered disproportionate loss of tropical dry forest which is a great ecosystem for humans and animals. McDonald’s used to be spruced

28

Where are global threat hotspots

In South America
In Madagascar
In Asia e.g Indonesia

29

Example of fragility of the system to change having an affect

The Gran Sabana ecosystem is highly vulnerable to disturbance e.g soil compaction. But has lots of biodiversity. Thin soils can be blown away as well - lots of threat.

30

What are the measures of biodiversity of the area

Richness hotspots
Endemicity hotspots
Threat hotspots
Complementarity area