1. Lichens and atmospheric pollution
ISTITUTO “S. G. BOSCO”
Viadana (MN) - ITALY
Lichens and atmospheric pollution
4th meeting in Somonino - Poland
11 – 17 October 2009
THE RESULTS OF OUR MONITORING

2. We decided to monitor these areas:
1. Viadana (the parking area near our school + public garden in the centre of the town)
2. Garda Lake (Sirmione and neighbourhood)
3. Green Oasis (private area 10 km far from Viadana and its neighbourhood - Cavallara)
We rejected other areas where lichens don‘t grow for many reasons.
One of these reasons is the poplar cultivation. These plants are particularly diffused in our area but they are often strongly treated with fungicides and parasites poisons. We found a real Lichen-desert not in the city centre but in the poplar wood near the river Po and its tributaries.

3. 1st STATION Parking area near our school 19 th March 2009 directions …
Let’s go!
1st STATION
Parking area near our school

4. Car Park near our school
Viadana
Car Park near our school

5. Viadana (1st STATION) Car Park near our school
No presence of fruticose lichens
Average total frequency (crustose and foliose forms) 22

6. Viadana centre 44° 55’ 41,9”N 10° 31’ 13,9”E 44° 55’ 36,9”N

7. WE WORKED IN THE MAIN SQUARE
Observation and identification of the species of lichens by using a simplified systematic key.

8. … AND IN THE GARDEN
Filling-in of forms
for the collection of data.

9. Viadana (2nd STATION) No presence of fruticose lichens
Central Square and Park
No presence of fruticose lichens
Average total frequency (for crustose and foliose forms) 21

10. Let’s go Sirmione 26/05/2009 Directions …. Classe 1A - ITIS
The class took part in an excursion to Sirmione, a lovely resort on Lake Garda with a traffic-free town centre.
45° 29’ 12,9” N
10° 36’ 36,9” E
Directions ….
Let’s go

11. 1st STATION (CAR PARK) Trees in Sirmione car park. Tilia n.3 Tilia n.42 3 1 L A KE 4 5
Tilia n.5
Tilia n.2
45° 29’ 09,9” N
10° 36’ 34,9” E

12. TREE N.2

13. TREE N.3

14. SIRMIONE (1st STATION) Car Park No presence of fruticose lichens
Average total frequency (for crustose and foliose forms) 39

15. (northern part of Sirmione)
2nd STATION
(northern part of Sirmione)
45° 29’ 53,9” N
10° 36’ 15,9” E
Olive tree: not suitable for our work
45° 29’ 53,9” N
10° 36’ 18,9” E

16. 3rd STATION Thermal bath park

18. 45° 29’ 42,0” N
10° 36’ 18,9” E

19. OUR CONCLUSIONS 3rd AREA 1st STATION
We decided these areas:
green Oasi
A private green oasis very close to Viadana
N.1
(95 cm)
18 April – We chose and took pictures of 3 trees (Quercus farnia) in a private wood of Quercus
44° 59’ 01,9” N
10° 38’ 24,9”E
44° 59’ 00,9” N
10° 38’ 24,00”E
N.2
(88 cm)
N.3
(77 cm)

20. CAVALLARA (1st STATION)
No presence of fruticose lichens
Average total frequency (for crustose and foliose forms) 27

21. 2nd STATION 44° 59’ 15,00” N 10° 38’ 36,9” E TILIA N.7 - 8 - 9
1st STATION
44° 59’ 15,00” N
10° 38’ 36,9” E
CAVALLARA, 10/06/09
2nd STATION
TILIA N

22. CAVALLARA (2nd STATION)
No presence of fruticose lichens
Average total frequency (for crustose and foliose forms) 25