• NotEasyBeingGreen@slrpnk.net
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    2 days ago

    I was surprised to learn this summer that birch trees can have short lifespans. Paper birch might only live like 30 to 40 years when grown as a crop.

    • save_the_humans@leminal.space
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      2 days ago

      I learned this summer bristlecone pines are among the longest lived life forms on earth. The oldest known non-clonal tree in the world is a bristlecone pine, named Methuselah, in California over 4800 years old. Its exact location is a closely guarded secret since the last oldest tree, also a bristlecone pine, was accidentally cut down.

        • ayyy@sh.itjust.works
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          2 days ago

          It’s on protected land. Also maybe I’m just lucky or something but the location isn’t thaaaaat secret if you pass the vibe check and get to know some people. I’ve talked to two different forestry workers who have seen the tree, and I’m just an ordinary outdoorsy dude who talks to people.

    • Thorry@feddit.org
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      2 days ago

      Yeah I was surprised to learn as well that a lot of trees grown for lumber only live for 15-30 years depending on the species. At some point it just won’t grow as fast anymore and it’s better to cut it down and replace it with a new tree that can grow fast again. Some might take longer, but that increases the price a lot, so the demand for those is shorter.

      The average lifespan of trees is also relatively short in relation to their maximum age. A tree takes up a lot of room, not just in terms of size, but also in terms of access to the sunlight and nutrients. So the big trees we see are the survivors, for each of those probably at least 100 smaller trees didn’t make it. Trees can also easily die due to disease, infestations or other mishaps. Some trees like elm could live a very long life, but depending on the region usually don’t make it past 100 because the chance they get a disease or fungus that kills them within that time.

    • Seleni@lemmy.world
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      2 days ago

      Even when not grown as a crop, alders, willows, and birches tend to have a more ‘human’ lifespan, around a century or so.

      Then on the other end of the spectrum, there are trees like yews, sequoias, and bristlecone pines, which live for millennia.