Detection of Passive Integrated Transponder (PIT) tags on piscivorous bird colonies in the Columbia River Basin, 1998 and 1999
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In 1998 and 1999, we modified 400-kHz passive integrated transponder (PIT) tag equipment previously used in water to detect PIT-tag codes on land from fish captured by piscivorous birds in the Columbia River Basin. Three detection techniques were used: an automated flat-plate antenna dragged over the surface of bird colonies with a four-wheel-drive vehicle, a pole-mounted antenna passed over smaller nesting areas by hand, and manual or visual sifting. Contract no. W68SBV806ZZ741
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NOAA
创建时间：
2023-05-19
