Trees:
Thinking
about 2015 and the NEW YEAR got me thinking about our human ‘three score and
ten’ lifetimes, and comparing that to the lifetime of trees. Then up came a
story on BBC about an oak tree in England that was going to be nominated for
the Tree of the Year Contest. This oak is said to be more than 1,000 years old!
Major Oak
Probably
more than 1,000 years old and weighing in at an estimated 23 tonnes, it has
been said that Major Oak is like "a stately home" in the forest. As ancient tree specialist Jill Butler,of the
Woodland Trust put it, the oak being nominated is "as stunning as many of
our palaces or man-made wonders like Westminster Abbey."
Named
after historian Major Hayman Rooke, who wrote about it in the 18th Century, its
history can be traced back as far as William the Conqueror. Reputedly
used as a hideout by Robin Hood and his merry men, Sherwood Forest's Major Oak
has been picked as England's ‘Tree of the Year’. It will take on 13 trees from
across Europe in what has been dubbed ‘Eurovision for trees’.
Tallest and Oldest
Methuselah
Major Oak is not the only old tree as trees
tend to be long-lived, some reaching several thousand years old. Methuselah, a
bristlecone pine tree in California is thought to be almost 5,000 years old.
The exact location of the gnarled twisted Methuselah is kept secret by the Forest Service for its protection (that might not be it above).
Hyperion
The tallest known tree, a redwood called Hyperion stands 115.6 m (379 ft) high. Because of their longevity and usefulness, trees have always been revered and they play a role in many of the world’s mythologies. The tree is estimated to contain 18,600 cubic feet of wood, and to be roughty 700-800 years old.
The Botany of a Tree
In botany a tree is a perennial plant with
an elongated stem, or trunk, supporting branches and
leaves. Trees include a variety of plant species that have independently
evolved a woody trunk and branches as a way to tower above other plants to
compete for sunlight. Thus Wikipedia tells us that, in a looser sense, the
taller palms,
the tree ferns, bananas and bamboos are
also trees. Most trees are surrounded by a layer of bark which acts as a protective barrier. The bark of some eucalyptus
trees is especially noticeable in warm weather when the trees shed large sheets
of bark.
Trees and CO2
Trees play a significant role in reducing erosion and moderating
the climate. They remove carbon dioxide from the atmosphere and store large
quantities carbon in their tissues. A Nasa study shows
tropical forests absorb 1.5 billion tonnes of CO2 a year.
Rainforests
absorb more than half of CO2 taken up by vegetation globally. In parts of the world, forests are shrinking as trees are
cleared to increase the amount of land available for agriculture. Researchers
now claim findings emphasise the need to protect rainforests from deforestation
to help counteract human greenhouse gas emissions.
Trees and Birds
Trees and forests provide a habitat for many species of animals
and plants. Tropical
rainforests are one of the most biodiverse
habitats in the world.
Here in our Australian gardens we love looking at the various
parrots that come to our bird feeders. A friend, who lives close to a nearby
nature park, has a greater variety of birds visit her bird feeders.
Even in our cleared and cultivated garden we are awakened by the
Kookaburras and Blackbirds every morning, and we love watching the rainbow
Lorikeets and Rosellas eating the seeds we have put out.
A King Parrot |
Currawong |
Now and then a flock
of Cockatoos will come screeching past the house. Right now we have a huge untidy nest in on of
the camellia bushes that belongs to a Currawong family, whose youngster is
making a great deal of noise as it begs its parents for food!
A Family of Kookaburra's (a local photographer) |
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