Sufficient conditions for rapid range expansion of a boreal conifer - Nature

), we visited 157 shadow locations first identified on imagery and located in the field with the built-in GNSS of late-model Apple iPhones with positional accuracy in the open landscapes estimated at 3 m. At these 157 locations, 11 shadows were cast by very tall willows . Of the 146 shadows confirmed as trees, 2 were dead and 1 had a recently broken top with green foliage on the ground. We added the length of the broken top to the standing height measured with a laser range-finder.

Returning from the field with individual tree data, R.J.D. displayed digitized shadow points together with field points on GEP, visually matching each field point to the nearest shadow, conditional on relative congruence between shadow size and tree height. This required care in clumps of trees with varying heights .

We made field expeditions to six study areas within the extent of the WV imagery we used for digitizing, three within the ‘simulated population area’ rectangle in Extended Data Fig.

United States Latest News, United States Headlines

Similar News:You can also read news stories similar to this one that we have collected from other news sources.

The Arctic is heating up nearly 4 times faster than the whole planet, study findsScientists previously estimated that the Arctic is heating up about twice as fast as the globe overall, but a new study finds that's a significant underestimate. Loss of sea ice is one of the clearest drivers behind the rapid warming.
Source: KTOOpubmedia - 🏆 439. / 53 Read more »

Even modest climate change may lead to major transitions in boreal forests - NatureThe survival of southern boreal tree saplings decreases in response to even modest warming and reduced rainfall, which,together with species-specific growth responses, could lead to regeneration failure of currently dominant tree species.
Source: Nature - 🏆 64. / 68 Read more »

Pitching prospect’s call-up signals start of a new era in OaklandProspect progress could add excitement to lost Oakland A’s season
Source: OakTribNews - 🏆 597. / 51 Read more »

A’s rookies make promising debuts in extra-inning loss to AngelsThe A’s suffered their second winless homestand of the season at 0-5.
Source: OakTribNews - 🏆 597. / 51 Read more »

The uncertain science of preimplantation genetic testing in Japan - Nature MedicineThe uncertain science of preimplantation genetic testing in Japan. Correspondence from Mayumi Sugiura-Ogasawara & Takeshi Sato, Nagoya City University, Japan
Source: NatureMedicine - 🏆 451. / 53 Read more »