Darker cells mean a higher score for this topic on that metric.
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Quick answers
Do all salmon die after spawning?
Most Oncorhynchus (Pacific) are semelparous. Salmo salar can spawn more than once. The postcard of corpses on gravel is a Pacific-weighted image.
Why do forests need salmon?
Isotope studies show marine nitrogen in riparian trees and songbirds. Bears and eagles are the visible vectors; the trees keep the receipt.
What did the Elwha dam removals show?
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.
What is the Alaska exception?
Many Alaska runs are still large and limited-entry managed. That success is not transferable to a heavily dammed Columbia without the same habitat.
The salmon future is a triad of climate, take and attention -- not a product roadmap.
Risk scores here track conservation pressure relative to other types. High resilience types sit in a calmer band; CR/EN types do not.
Conservation risk
Salmon sits in a watch band in this atlas (resilience 50/100). Some Pacific stocks remain productive; many Atlantic and southern-US Chinook runs are endangered or extirpated behind dams.
Teaching snapshot as of September 2026 — not a live IUCN feed.
Safeguards
Listing and enforcement
CITES, ESA, RFMOs and national parks only work when patrols and papers move.
Site protection
A breeding lake, ice type or cavity tree cannot be replaced by a logo.
Prey and forage base
Seals, krill, ungulates, bamboo and sardines are the quiet half of the salmon budget.
Disease and toxin watch
Ebola, KHV, TTX, lead and rodenticides are type-specific ceilings.
English-language science capacity
The field sites in the techDeep lens still train the next census -- they are a safeguard only if funded.
What monitoring automates first
Census and acoustics
Camera traps, radar and moorings already take hours that used to be only notebooks.
Trade-document checks
eBCD and permit databases can flag a loin or a skin faster than a paper file.
Outbreak mapping
Flu and Ebola desks now run on shared dashboards -- still needing a human closer.
Visitor flow
Ticketing and hide cameras can be scheduled; habituation ethics cannot be fully automated.
Structural shifts
Climate as habitat law
Ice, bleach and river heat are now listing factors, not background weather.
From fortress to corridor
National parks plus gene flow -- panda belts, tiger landscapes, wolf packs on roads.
Fame as a take risk
Nemo, Jaws, Koko and Cecil still move capture, fear and donations in the same year.
English science is not the range
The localLens is a reading aid. Range-state languages still hold the living animal.
Outlook
Near term
Expect more listings, more cameras and more conflict paperwork -- not a sudden best-species ending.
Medium term
Sites that keep forage and enforcement will hold; single-lake and single-forest types stay brittle.
Long view
The salmon body plan will remain recognisable. The map of secure versus threatened populations will not.
Keep exploring
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