Proposal for Komitas Avenue renovation in Yerevan - the issue with trees replacement in the current plan and the request for better options

[u/Bryozoa]

https://kanachyerevan.am/status/alerts/komitas/

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[u/T-nash]

Most trees in Komidas are infected with bacterial gal and have infestation problems.

How would gradual replacement guarantee bacterial gall won't be transferred to the new trees, something that is transferred both by contact and by air. As well as the infested trees becoming a harbor for pests.

These things cause a weak link in the ecosystem and are a threat to the new ones planted. constantly spraying a tree for pests has never solved the issue, only made it worse.

[u/codesnik → u/T-nash]

tree infections are all species dependent, no?

[u/T-nash → u/codesnik]

Some are universal, some are family/species specific, some more prone than others, some less.

Similar patterns like in the animal world.

[u/Bryozoa → u/T-nash]

Could you please provide a link to the source with this information?

[u/T-nash → u/Bryozoa]

It's my own observations based on my own research. I have not recorded them.

For reference, this is bacterial gal: https://share.google/Iq9pc3bTLojL7E3kB
I'm sure everyone has noticed them, they're very common in Yerevan and mostly in a straight sequence from the lack of pruning tool disinfection.

I haven't identified the exact species of pests, but I can say they're a mite type, or similar to white flies, mainly under leafs, the typical ones that end up with population explosions from the lack of predators.

While these are not the exact books I read, they're the same topic.

Pesticide effect: https://www.letstalkacademy.com/pesticide-application-pest-population-increase/

The effects of diseased trees being a hazard to healthier ones:

https://www.birmingham.ac.uk/research/climate/climate-publications/nature/tree-susceptibility-and-resilience-to-pests-and-disease

https://emtreesurgerytetbury.co.uk/removing-diseased-trees-why-felling-is-sometimes-necessary/

[u/Bryozoa → u/T-nash]

So, no source, just your observations. I see.

[u/T-nash → u/Bryozoa]

I literally linked you to papers backing my points...

[u/yasamoka → u/Bryozoa]

Can you read? Do you want help?

[u/Bryozoa → u/[deleted]]

No. Sakuras are a bad choise for a city. Smaller life span, extremely difficult to maintain properly, and it looks nice one week a year, all the other time it's just a common tree with small canopy giving not much shade.