Copy of `USGS - Glossary of Avian Terms`

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USGS - Glossary of Avian Terms Category: Agriculture and Industry > Glossary of Avian Terms Date & country: 30/06/2013, USA Words: 203

Trophic level
the position in the food chain determined by the number of energy-transfer steps to that level (Ricklefs 1979:881).

Trophic structure
organization of the community based on feeding relationships of populations (Ricklefs 1979:881).

Winter Bird Population Study
(U.S.)