Lichens

Question 1

Lichen

Answer 1

• symbiotic association between a fungus and a photosynthetic organism
• not a unified group, hard to define
• env pollution monitors
• only the fungus is named

Question 2

Soredia

Answer 2

• common reproductive structures of lichens

- small clusters of hyphae with embedded algae or cyanobacteria

Question 3

Lichen pollution study

Answer 3

• defined negative relationship between species diversity and SO2
• common foliose spp more successful in recolinz

Question 4

1970 Hawksworth and Rose

Answer 4

• developed 0-10 scales for lichen communities on tress
• focused on areas close to recording gauges
• used 1300 gauges

Question 5

Effects of pollution of lichens

Answer 5

• decrease in thallus size/fertility
• bleaching/coevolution
• reduction in the # of algal cells/thallus
• degradation of photosynthetic pigments