mainstem

mainstem englanniksi

1. The principal watercourse of a river that has multiple streams

2. {{quote-journal|en|date=July 9, 2015|author=|title=Diverse Early Life-History Strategies in Migratory Amazonian Catfish: Implications for Conservation and Management|journal=PLOS ONE|url=http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0129697|doi=10.1371/journal.pone.0129697|volume=|issue=|pages=