Mr tree

[Tony Croft aka hamadryad]

 

some images for a fellow enthusiast

 

 

 

[RobArb]

not the same environment but....

[Pete Hart]

Great photos!!! Love the first one.....looks like a gnarly old tree

[mrtree]

Those interested in lichens and trees should look at some of the work done by Rose, and Coppins & Coppins, on the use of lichens as indicators of ecological continuity. Genera such as Lobaria should be studied and learnt as the genus can be identified by eye. The "ancient tree" speices are also negatively affected by pollution and eutrophication. The other thing of note is that complexity and diversity or lichens and bryhophytes (mosses, liverworts and hornworts) increase with age of trees.

[Luke Quenby]

Great pics. Should be a good thread I hope!

[BenR]

not the same environment but....

 

The lichens in your first picture (xanthoria parietina (yellow) and physica tenella (greeny)) are both indicative of polluted air conditions.

 

All of the others posted are indicators of clean air and are commonly associated with ancient woodlands.

 

I did my dissertation on lichens.. sad act haha:001_rolleyes:

[RobArb]

The lichens in your first picture (xanthoria parietina (yellow) and physica tenella (greeny)) are both indicative of polluted air conditions.

 

All of the others posted are indicators of clean air and are commonly associated with ancient woodlands.

 

I did my dissertation on lichens.. sad act haha:001_rolleyes:

 

 

not sad at all...

 

i can tell you now you are correct

 

the xanthoria and physica where from a sycy in the middle of salford near a busy main road and motorway

 

 

the others where from martin mere wetlands in lancashire near me (its a conservation area)

 

 

i may plan to do lichen research myself for part of my degree/whatever qualification i stop at, so you may be a good person to know:thumbup:

[BenR]

I can send you my dissertation if you are really that interested.

 

Some useful references even if it is completely unrelated to your field of study.

 

My study was "an investigation into lichen communities on Oaks between Reading and Nettlebed in relation to measured pollution levels for NOx and SO2"

[BenR]

a few more for those that are interested..

[BenR]

top is usnea subfloridan (one that looks like tree roots) and parmelia perlata (leafy looking one)

 

3rd is parmelia caperata.

 

4th is Melanelixia fuliginosa