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http://esciencenews.com/articles/2011/02/21/new.study.illustrates.shifting.biomes.alaska

14 Comments

http://esciencenews.com/articles/2011/02/21/new.study.illustrates.shifting.biomes.alaska

After reading the article, answer the following questions:

1.  Identify what the present biome is shifting to (what is the new biome?).

2.  Explain how tree ring data is used to chart this shift.

3.  Explain how tree rings show drought or rainy conditions during any given year?

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14 thoughts on “http://esciencenews.com/articles/2011/02/21/new.study.illustrates.shifting.biomes.alaska

  1. The Alaskan tundra is shifting into a boreal forest. If the tree rings are thin due to hot air being blown, they can calculate that. If there is heavy rainfall, the tree rings are thicker due to more water. Water stimulates growth of the tree thickness. If its a dry spell, the ring will be thinner due to lack of water.

  2. 1.) the present biome (tundra) is shifting to evergreen forests, and the deciduous forests in the south are declining.
    2.) tree ring data is used to chart this shift through looking at the different pattern which represent the different climates that a tree has been through.
    3.) tree ring show drought or rainy conditions during any given year because the wider the distance between rings represents the more rainy conditions, and the thinner the distance between rings represents a drought.

  3. 1. The arctic biome is shifting a boreal forest.
    2. Tree ring data shows the shifts in temperature due to their rings.
    3. Tree rings are thinner the less rain there is.

  4. 1. The present biome is shifting into a desert
    2. Tree rings will increase or decrease in size depending on how much water and nutrients the tree got that year.
    3. If a tree gets a rainy year it will grow but if it is a drought the rings will be smaller.

  5. It’s turning into an evergreen forest. While looking at the tree rings you can see what climates the tree rings have been through. If its Ailey then the rings are spaced more apart but if there is a drought the rings are very close together.

  6. 1. The biome in Alaska is changing from tundra to boreal forest
    2. Data is recorded by how thin tree rings are due to hot air blown onto the trees.
    3. Tree rings show drought or rainy conditions by how thin or thick the rings are. The thinner the rings means that there was a drought. The wider the rings means there has been enough rainfall.

  7. 1. Alaskan tundra is shifting to a boreal forest.
    2. The tree ring data shows the changes in temperature.
    3. Tree rings show drought by the size of the rings.

  8. 1. The biome is changing from tundra to forest
    2. tree rings are affected due to hot air blown onto the trees.
    3. Tree rings show drought or rainy conditions by how thin or thick the rings are. The thinner the rings means that there was a drought. The wider the rings means there has been enough rainfall. It’s affected by the climate changes.

  9. 1. The present biome which is Tundra, is shifting to evergreen forests.
    2. Tree ring data is used to chart the shift through looking at the different patterns that represent the different climates that a tree has been through throughout its life.
    3. Tree ring show drought or rainy conditions during any given year because the wider the distance between rings represents the more rainy conditions, and the thinner the distance between rings represents a drought, as explained in the article.

  10. 1. The present biome is tundra and it is shifting into evergreen forests.
    2 the tree rings show what kinds of climates the tree has experienced throughout his life.
    3. The distance between the rings represents the climate conditions, the thinner the distance between the lines means there was a drought, and vice versa.

  11. 1. the tundra is shifting to boreal forest
    2. They look at the tree rings different sizes over the years it had been alive th chart the shift
    3.tree rings show drought by looking at how thin or thick the ring is

  12. 1. The Alaska tundra is changing to boreal forests.
    2. The tree ring data is showing the changes in weather
    3. The size of the rings will show drought

  13. 1: the tundra in Alaska is changing to boreal forest
    2: tree ring data shows changes in weather
    3: ring sizes show drought

  14. 1. The present biome is tundra and it is shifting into evergreen forests.
    2 the tree rings show what kinds of climates the tree has experienced throughout his life.
    3. The distance between the rings represents the climate conditions, the thinner the distance between the lines means there was a drought, and vice versa.

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