Gathering & interpreting data

Question 1

The 3 levels of data gathering and processing are:

Answer 1

1. Primary level: gathering data in the field (often done by volunteers)
2. Secondary: Using other people’s data / databases
3. Tertiary: application and use

Question 2

4 ways of Spatial gathering & presentation methodology

Answer 2

1. Administrative border (different regions / gemeentes). Colored if present. Old method no longer used anymore
2. Selected measuring site (spots where regular measurements are taken)
3. UTM
4. RD coordinates

Question 3

What is UTM?

Answer 3

Universal transverse Mercator:

a coordinate system that divides the world into sixty north-south zones, each 6 degrees of longitude wide. Terrible for small scale, useful for large scale. Corrects for presenting earths round surface on a flat surface

Question 4

What are RD coordinates?

Answer 4

Rijksdriehoekscoördinaten:

mostly used in NL. A network of about 5600 points in the Netherlands. Grind cells of 5x5 km

Question 5

Occupancy

Answer 5

• Dots based on how many
• Finer scale better for smaller area / smaller animal
• By taking account the number of 1x1 cells within a 5x5 cell

Question 6

Spatial scale and rarity

Answer 6

% Squares occupied (see image)
- Fewer = bigger difference in rarity
- Geographical range (just NL vs all EU)
- Rabinowitz classes of rarity

Question 7

Rabinowitz classes of rarity

Question 8

Mapping and monitoring

Answer 8

Are about space and time

Monitoring is on different sites tracking what happens over time

mapping is about understanding what exists

Question 9

(9) Red List methodology (IUCN)

Answer 9

1. extinct
2. Extinct in the wild
3. Critically endangered
4. Endangered
5. Vulnerable
6. Near threatened
7. Least concern
8. Data deficient
9. Not evaluated (invasive species)

Question 10

Critically endangered

Answer 10

CR:
vvr: very very rare
and
ttt: very strong negative trend

Question 11

Endangered

Answer 11

EN
vvr: very very rare
and
tt: strong negative trend

OR

vr: very rare
and
ttt: Very strong negative trend

OR
vr: very rare
and
tt: strong negative trend

Question 12

Vulnerable

Answer 12

vu
vvr: very very rare
and
t: Negative trend

OR
rare and very strong negative trend
OR
rare and strong negative trend
OR
rare and negative trend
OR
very rare and strong negative trend

Question 13

Near threatened

Answer 13

NT
vvr: very very rare
and
stable or positive trend
OR
common and very strong negative trend
OR
common and strong negative trend