Biofouling

Project biofouling. Where algae on a submerged surface is worth harvesting, where it is worth recruiting, and where it is worth suppressing.
← coastal ecosystem health design stage

Consequence, rather than fouling pressure, decides whether a surface is suppressed or released to recruit. That is the same axis as remediate versus harvest. One idea, two settings, and this project runs along it.

The resource end · start here

IMTA siting interactive tool open it →

What it answers

Nitrogen is highest at the cages. So is copper, from the nets. They fall off at different rates, so a band sits between them.

What moves it

Norway, Chile, two species, the net coating. Going non-biocidal opens the closest 190 m and doubles sellable yield.

Trophic column interactive tool
Check whether the crop is clean
station by station · isotopes place each level · every value modelled
What decides a sale
Metals travel up a food web at different rates, and the crop carries what the site gives it.
29 claims checked · a verdict on each

Evidence base

Lorica map interactive map
Read modelled fouling pressure by cell
a few minutes · drag the chart to move time
Lorica interactive calculator
Sort surfaces into suppress or recruit
10 minutes · all 66 coefficients are editable
The briefing 14-slide deck
5 minutes · arrow keys or click · every slide has a URL
Depth study interactive study
Compare three ways to show depth
2 minutes · one question, three answers

Written material · in the repo

Evidence ledger 29 claims A verdict on every load-bearing claim. projects/biofouling.evidence.md
Design document ~9,900 words Hard versus soft accumulators, and chitosan. projects/biofouling/DESIGN.md
Demo region ~2,000 words Why this coast, with station coordinates. projects/biofouling/DEMO_REGION.md
Design review ~2,300 words Twelve ranked findings, by named reader. projects/biofouling/HCD_REVIEW.md
README one page projects/biofouling/README.md

These five live in the repo while the internal document viewer is being reconfigured.

Data files · raw JSON

Project registry raw JSON 14 inputs and 6 outputs, provenance on each. Carries the declared conflict of interest. Context file raw JSON Sources, stakeholders and threats, hand-seeded. Asset registry raw JSON Nine modelled surfaces the calculator loads.

Versions

Every cut is kept: 33 map, 9 briefing, 6 trophic, 5 siting, 4 calculator, 3 depth. Two are worth knowing: map v0.4, tide without flow, and Lorica v0.1, which keeps the uncorrected Washington claim as the record of a correction.