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Crayfish Invasion; Lichen; Heritage Trees; Conservation Dogs

Crayfish Invasion; Lichen; Heritage Trees; Working Dogs for Conservation

02/17/2011 | Rating TV-G

Oregon Field Guide

Crayfish Invasion; Lichen; Heritage Trees; Conservation Dogs

Season 22 Episode 2210 | 29m 15sVideo has Closed Captions

Crayfish Invasion; Lichen; Heritage Trees; Working Dogs for Conservation

Crayfish Invasion - Eastern crayfish invade Oregon rivers through a surprise route. Lichen - Lichen can teach us volumes about the quality of the air we breathe. Heritage Trees - Portland's Heritage Tree program recognizes and preserves trees with special significance. Working Dogs for Conservation - A conservation dog uses his amazing sense of smell to help a researcher find rare plants.

02/17/2011 | Rating TV-G

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Oregon Field Guide is a local public television program presented by OPB

Oregon Field Guide

Crayfish Invasion; Lichen; Heritage Trees; Conservation Dogs

Season 22 Episode 2210 | 29m 15sVideo has Closed Captions

Crayfish Invasion - Eastern crayfish invade Oregon rivers through a surprise route. Lichen - Lichen can teach us volumes about the quality of the air we breathe. Heritage Trees - Portland's Heritage Tree program recognizes and preserves trees with special significance. Working Dogs for Conservation - A conservation dog uses his amazing sense of smell to help a researcher find rare plants.

02/17/2011 | Rating TV-G

Problems playing video?   | Closed Captioning Feedback

Report a Problem

Before you submit an error, please consult our Video Help page.

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