Freshwater Ecosystem Stressors

DISCLAIMER — Real, Durable Science Only, No Time-Bound Snapshots

Why no UTAC/CREP/AFET bridge: not only because the cited literature already provides the necessary quantitative structure -- a deliberate choice. This project's highly speculative AFET/UTAC experiments must never stand in the way of climate/ecology topics being accessible and usable to people who don't work inside that construct and aren't looking for renormalization groups. Real, checkable science, without the burden of an unproven framework. See PACKAGE_REGISTRY.md's "Why no UTAC/CREP/AFET bridge in the climate/ecology series" (2026-08-31) in the GenesisAeon workspace root for the full canonical note.

Status: Real, independently verified science. NO time-bound "current conditions" data. NO UTAC/CREP/AFET bridge.

Why time-bound data was deliberately excluded

The source dialogue for this package (P105.txt, Johann + Gemini + Kimi) included real, accurate-at-the-time observations: a Rhine water-level record at Cologne in August 2026, cyanobacteria warnings at the Baltic Sea and smaller Bavarian waterways, a risk assessment for a repeat Oder salinity crisis, and an El Niño 2026/27 seasonal forecast. Independent verification (2026-08-15/16) confirmed these were, in fact, accurate as reported at the time (Rhine at Cologne did hit a new record low of 68cm on 2026-08-01, later falling to 60cm; NOAA's CPC did give strong odds of a very strong El Niño peaking Oct-Dec 2026).

None of that is encoded in this package's data. A specific river gauge reading or a seasonal forecast is real and important in the moment, but it is not the kind of fact a versioned science package should carry as a permanent constant — unlike a peer-reviewed paper's findings, it will be stale, supers

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freshwater-ecosystem-stressors-utac

GenesisAeon Package 106 — freshwater ecosystem stressors under deglacierization. The ecological bridge between the physical series (P99–P102) and the resilience/governance series (P103–P104): what is actually happening to the rivers and lakes that all of this ultimately affects. Deliberately has no UTAC/CREP/AFET bridge — see DISCLAIMER.md.

For a plain-language explanation of the same topic (German, no jargon, written for general audiences), see WHITEPAPER.md.

What this is, and what it deliberately excludes

Built on durable, citable science only: real WWF/Ramsar statistics and a real, peer-reviewed case study (the 2022 Oder/Odra disaster).

It deliberately excludes time-bound "current conditions" — a specific river-level reading, a specific seasonal (e.g. El Niño) forecast — from its data. Those are real and newsworthy in the moment, but a versioned science package isn't the right place for a news-cycle snapshot: it would be stale within months, unlike the peer-reviewed literature the rest of this ecosystem cites. If you need current conditions, check a live hydrological monitoring source instead.

What's real here

• WWF Living Planet Report (2022) — freshwater vertebrate
• populations declined 83% on average since 1970 (vs. 69% across
• all monitored vertebrate biomes — freshwater is the steepest decline
• of any habitat type), worst in Latin America/Caribbean (94%). This
• is a population-size index, not an extinction count — see
• is_population_decline_not_extinction().
• Ramsar Global Wetland Outlook (2018) — wetlands are disappearing
• 3x faster than forests globally, 35% lost 1970–2015, with loss
• accelerating (not just continuing) since 2000. Directly relevant to
• P103: wetlands are one of the real components of a distributed
• buffer portfolio, and they're vanishing fastest of all.
• The 2022 Oder/Odra River disaster (Sobieraj & Metelski 2023) — a
• real, mechanistic multi-stressor case study: elevated salinity
• (industrial/mining discharge) + high solar radiation + low water
• discharge (drought) combined to trigger a toxic Prymnesium parvum
• bloom. Outcome: ~50% fish population decline in the affected stretch,
• ~1,000 tonnes of fish/mussels/snails killed. Not a natural
• disaster — the bloom would not have reached this scale without the
• human-caused salinity increase. is_natural_disaster() returns
• False.

Quickstart

bash pip install freshwater-ecosystem-stressors-utac

```python from freshwater_ecosystem_stressors_utac import ( freshwater_vertebrate_decline_pct, overall_vertebrate_decline_pct, loss_rate_vs_forest_multiplier, ODER_2022, is_natural_disaster, requires_all

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