Thursday, April 17, 2008

Reconstructing the Sudden Oak Death epidemic

Biology-blog reports on a study that reconstructs the Sudden Oak Death epidemic in California. The paper is due to be published "early online" later this month in the journal Molecular Ecology.

Wednesday, April 09, 2008

8000-year-old spruce roots

Martin Rundkvist talks about some recent discoveries
New research by Leif Kullman at the University of UmeƄ is just being reported on by the media... no standing trees older than 600 years ... But below ground, the living roots of three trees gave radiocarbon dates at 5,000, 6,000 and 8,000 years BP! The oldest root system thus dates back from the end of the latest glaciation.
Pretty cool stuff. Now here's the interesting question - can someone find something similar in an area that wasn't glaciated? What's the real maximum age for individuals like this?

Update: Reed E. in the comments answers that question (though, sadly, without a reference, so take this with a grain of salt)

While the Norway Spruce is a fine tree, its clonal colonies have nothing on the Quaking Aspen (Populus tremuloides.) There's Pando in Utah, a single clonal colony that is thought to weigh 6,000 tonnes and perhaps as old as 80,000 years.

Posted by: Reed E | April 8, 2008 8:14 PM

Wednesday, April 02, 2008

Tangled Bank #102

Tangled Bank #102 is up at Further Thoughts. Berry Go Round #3 was published a week ago at Greg Laden's blog.