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#1
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Age of trees
Hi,
I'm not sure if this is the place to ask, but I was led to believe that there existed trees that were so old, unique species had evolved on them. Is this true? C. |
#2
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Age of trees
(coaster) writes:
I'm not sure if this is the place to ask, but I was led to believe that there existed trees that were so old, unique species had evolved on them. Is this true? Not individual trees, but species of trees sometimes associate with other plants and animals. For instance, there is a species of acacia that had developed a commensal relationship with a species of ant. The tree feeds the ants with nectar, and the ants defend the tree from all other insect invaders. The association between mistletoe and oak is well known. Almost every species of tree has parasites and pathogens that are specific to that species. -- http://home.teleport.com/~larryc |
#3
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Age of trees
Larry Caldwell wrote:
(coaster) writes: I'm not sure if this is the place to ask, but I was led to believe that there existed trees that were so old, unique species had evolved on them. Is this true? Not individual trees, but species of trees sometimes associate with other plants and animals. For instance, there is a species of acacia that had developed a commensal relationship with a species of ant. The tree feeds the ants with nectar, and the ants defend the tree from all other insect invaders. The association between mistletoe and oak is well known. Almost every species of tree has parasites and pathogens that are specific to that species. If you count epiphytes (ferns, mosses, lichens, etc) old Bigleaf Maples in the Hoh rainforest have upwards of 200 species living on them. When you include insects, the canopy is full of them. In tropical rainforests, invertebrates in the canopy account for some of the highest species counts anywhere on the planet. They didn't evolve that way because the particular tree was old, they evolved because the habitat was available. |
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