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Crayfish Invasion

Invasive crayfish from the east have been spotted for the 1st time west of the Rockies, in a river in Eastern Oregon and a stream in Corvallis. They were shipped to elementary schools for biology classes and then released where they don’t belong by well meaning children or their teachers. The shipments of live classroom specimens violates state wildlife laws but state authorities have chosen not to aggressively enforce the ban.

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Heritage Trees

Portland’s Heritage Tree program began in 1993 to recognize and preserve trees with special significance to the city by virtue of their size, age, type, or horticulture or history. We follow the selection committee made up of citizens and botanical experts as they assess this year’s nominees, with special concentration on the Zahner family’s southern Catalpa tree.

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Lichen

What could possibly be inspiring about that green stuff covering Oregon’s trees? For some, lichen is a wonderland of mystery and beauty that also teaches us volumes about the quality of the air we breathe.

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Working Dogs for Conservation

It's not easy for a researcher to find a single endangered plant in a huge field full of other flora. For a trained conservation dog, though, sniffing out a Kincaid's lupine is a breeze.

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