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Contents contributed and discussions participated by mrs. b.

mrs. b.

SIRS: Coalition Urges Tighter Controls on 'Extreme Genetic Engineering' - 0 views

    • mrs. b.
       
      genetic engineering has existed for 40 years
mrs. b.

A fresh look at Mount St. Helens | Earth | Science News - 0 views

  • Life returns Some researchers feared the area north of the volcano would remain a sterile moonscape for decades. But scientists studying the blast-seared zone north of the peak found vegetation on the landslide within a few years,
  • Nine years after the eruption, plants had returned to just over 10 percent of the hummocky terrain. Twenty years on, vegetation had expanded to cover about two-thirds of the deposit. Today, Frenzen says, about 80 percent of the once sterile area sports vegetation.
  • Some of the first plants to return were lupines, most of which are  perennial plants that add nitrogen to the soil.
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  • Many factors have influenced the rate at which plants repopulated the landslide deposits. For example, plants with seeds carried by wind or by highly mobile creatures like birds moved into the blast zone faster.
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    "Life returns Some researchers feared the area north of the volcano would remain a sterile moonscape for decades. But scientists studying the blast-seared zone north of the peak found vegetation on the landslide within a few years, "
mrs. b.

Succession - 5 views

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