Salmon in 2010s: Farms and remaining dams
[590] [read-salmon-4-190] In 2010s, the field log for Salmon is headed “Farms and remaining dams.” The figure kept beside that heading is 2010. It is a count or a date from the work, not a rank of the species’ worth. A zoo birthday card does not replace the log. Single-digit returns made an Idaho lake a national ESA exhibit.
After 2011-14, sediment flushed and salmon recolonised reaches above the old dams faster than some models feared -- a rare full-height teardown. Are hatcheries a solution or a delay? They keep harvest numbers up and can dilute wild fitness. The argument is now about proportions, not existence.
Why are Atlantic salmon a different politics? Wild S. salar collapsed in much of Europe and New England. Farmed Atlantic salmon in net pens are a separate industry with sea-louse and escape files. Many Alaska runs are still large and limited-entry managed. That success is not transferable to a heavily dammed Columbia without the same habitat.
Olfactory imprinting on natal water plus celestial and magnetic cues. A ladder that smells wrong is a closed door. Did Boldt (1974) change more than courtrooms? US v. Washington affirmed treaty harvest shares for tribes. Allocation, not biology, became the daily salmon fight in Puget Sound.
Keep 2010s, “Farms and remaining dams,” and 2010 together or the note on Salmon stops being that year’s record.2010s
Figures to keep
- Year of the note
- 2010s
- Figure to keep
- 2010
- Species
- Salmon
- Line in the log
- Farms and remaining dams
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