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Nature Notes

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The Human Ecosystem

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Created: Tuesday, 01 November 2011 00:00
Written by Nadia O’Carroll

We share the planet and our own bodies with an unseen multitude of microscopic organisms.

Plants and animals are in many respects huge ecosystems of diverse microscopic organisms, rather than individuals of one species. This microbiota includes yeast, fungi, bacteria, viruses and protists. In humans the microbiota may compose 1 kg to 2.25 kg of a person’s body weight. The number of human cells in a person’s body are greatly outnumbered (over 10 times) by the alien cells of microbiotic organisms which form vast resident colonies on the surface of internal and external tissue. It is also estimated that between 100 and 200 human genes are actually under the control of resident bacteria.

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Australasian Gannets - Plunge Divers

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Created: Tuesday, 18 October 2011 00:00
Written by Nadia O’Carroll

Sometimes shoals of bait fish can be seen from the shore of the Gold Coast, their presence is often indicated by congregations of seabirds, some of which nosedive dramatically from a great height into the midst of the schooling fish.

Most of these plunge divers are usually Australasian Gannets. These are a handsome white streamlined seabird with an apricot head, long black marked pointed wings and tail, dagger shaped beak and blue eyes. They are regularly seen offshore in SEQ from April to September. They are pelagic birds which breed in colonies in southern Australia and New Zealand. The birds pair for life and return to the same nesting site, they may be quite long lived with lifespans of 30-40 years.

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Ancient Marine Reptiles in Queensland

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Created: Tuesday, 20 September 2011 00:00
Written by Nadia O’Carroll

Queensland is home to the world’s largest marine reptile, the Estuarine or Saltwater Crocodile, also known as the Indo-Pacific Crocodile. Male “Salties” may grow over 6 metres in length and weigh over 1,300 kilograms. Recently an Indo-Pacific crocodile measuring 6.4 metres and weighing 1075 kilograms was captured in the Philippines. It is thought that even larger specimens may exist.

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Fireflies

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Created: Tuesday, 11 October 2011 00:00
Written by Nadia O’Carroll

On spring evenings you may notice small bright lights flashing and flying erratically through the air, these are fireflies. What makes this little insect so spectacular is bioluminescence – the ability to glow. Tamborine Mountain is home to two famous nocturnal, bioluminescent creatures – fireflies and glow-worms.

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Carbohydrates

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Created: Tuesday, 06 September 2011 00:00
Written by Nadia O’Carroll

Carbohydrates are the planets most common organic compounds. They provide energy and structure for both plant and animal life, we commonly call them sugars.

Carbohydrates are organic compounds composed of the elements hydrogen, carbon and oxygen. These elements can be arranged in many structures which give them a variety of biochemical properties and give rise to many forms of carbohydrates.

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More Articles ...

  1. Red Cedar
  2. Chilled Out Lizards
  3. Gondwana
  4. Looking for Glossies
  5. Leeches
  6. Mistaken identity - Cane Toads and Brown Frogs
  7. Ocean waves and Tsunami – a comparison
  8. Liquefaction in Christchurch
  9. Myrtle Rust
  10. The winter nomad – Reindeer / Caribou
  11. Sea stars
  12. Channel-billed Cuckoo
  13. The Southern Oscillation - El Nino and La Nina
  14. Fireworks – hot and cool light
  15. Mountain Giants
  16. Underwater Vision
  17. Mountain Ducks
  18. Locusts
  19. Earthquakes, Australia and New Zealand
  20. Spring Flowers

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Why does attentiveness to nature matter? In a very fundamental sense, we are what we pay attention to. Paying heed to beauty, grace, and everyday miracles promotes a sense of possibility and coherence that runs deeper and truer than the often illusory commercial, social "realities" advanced by mainstream contemporary culture. ... Our attention is precious, and what we choose to focus it on has enormous consequences. What we choose to look at, and to listen to--these choices change the world. As Thich Nhat Hanh has pointed out, we become the bad television programs that we watch. A society that expends its energies tracking the latest doings of the celebrity couple is fundamentally distinct from one that watches for the first arriving spring migrant birds, or takes a weekend to check out insects in a mountain stream, or looks inside flowers to admire the marvelous ingenuities involved in pollination. The former tends to drag culture down to its lowest commonalities; the latter can lift us up in a sense of unity with all life. The Way of Natural History, edited by Thomas Lowe Fleischner and published by Trinity University Press (Texas)