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- The lost world of northern dinosaurs | Geophysical Institute
A petrified tree trunk rests on the beach of the upper Colville River Photo by Patrick Druckenmiller, UA Museum of the North Meat-eating theropod dinosaurs left their tracks in mud 90 million to 100 million years ago as they travelled different directions across a spot now exposed by the upper Colville River
- Kannada pocket guide for Common Avenue trees of Karnataka
But geography defines species The team found trees like the Flame of the Forest, Indian laburnum, Pongam, the Indian coral tree widely spread in dry regions of the state, along with the Gulmohar which has adapted to different climates Whereas, in the wetter regions they documented trees like Champaca, varieties of Bauhinias and Bakula pushpa
- Trees for a Cold Climate - Geophysical Institute
Back on the ground, I did a little research on why so few tree types grow naturally in the neighborhood Winter's extreme cold easily eliminates some tree species hardy elsewhere Oak, ash, and elm endure occasional severely cold temperatures in the contiguous forty-eight states because they can produce chemicals that serve as natural antifreeze
- Squirrels and toxic mushrooms; aspens and leaf miners
Caterpillars known as aspen leaf miners have hit almost every tree in the Interior and many throughout Alaska during a recent outbreak, cutting mazes beneath the surfaces of leaves When biologists checked out a sample of 90 aspens last year, 99 percent of the trees had at least some leaf-miner damage
- Greenup hits, so does pollen | Geophysical Institute
Greenup — the great, silent collective explosion of freed tree buds that had been frozen all winter like a clenched fist — happened yesterday in interior Alaska I know this because it’s a phenomenon that’s easy to notice here in Fairbanks, which is locked up in black-and-white for much of the year And because Rick Thoman just told me
- Boreal owls perform by daylight | Geophysical Institute
The late biologist Dave Klein attached the nest box to a black spruce tree north of the University of Alaska Fairbanks ski trails many years ago In search of a mate, the owl sings his haunting little song almost constantly for all hours of darkness now at the spring equinox
- Growing Seasons in Alaska | Geophysical Institute
Many trees and shrubs require a minimum number of hours when the temperature is below about 40 F (5 C) but above freezing before they will come out of dormancy We had an elm tree in the yard in Kansas that had too low a chilling requirement for that climate
- Leaves - Geophysical Institute
An individual tree or shrub, regardless of its species, will exhibit variation in its leaves The small-scale characteristics of leaf structure may differ leaf to leaf, and even the leaf size and shape may vary widely
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