Jen Raynor
@jenraynor.bsky.social
38 followers 47 following 10 posts
Economist working at the intersection of ocean science, policy & data | Asst. Prof @uwmadison.bsky.social | Formerly @noaa.gov | I study who uses the sea, and how
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Reposted by Jen Raynor
unep.org
History made for the ocean: #BBNJ Agreement enters into force, protecting high seas & deep seabed, safeguarding life under water.

“Our ocean is the foundation of our very existence. Today we took an important step forward to save our ocean, & to save our future” - ED @ingerandersen.bsky.social
jenraynor.bsky.social
Isn't it incredible! Enric took this photo in the Galapagos.
jenraynor.bsky.social
Our study points to a promising shift in strategy:
⚓The future of enforcement in protected areas isn’t just more patrols.
🛰️ It’s using satellites + open data to target patrols where they’re needed most.

These tools can make enforcement more efficient, especially for countries with limited capacity.
jenraynor.bsky.social
This is a rare good-news story for ocean conservation, and a proof of concept for monitoring vast ocean protections with open data + AI. These tools are scalable, transparent, and cost-effective, offering a promising model for monitoring ocean activity worldwide.
jenraynor.bsky.social
The results?
📉 96% of these protected areas saw less than one day of apparent fishing effort per year; 80% saw none at all.
📉 Just 1 fishing vessel detection per 20,000 km² on average in protected areas—9x lower than unprotected waters.

Not bad for places many assumed had rampant poaching.
jenraynor.bsky.social
We used two independent tools to detect industrial fishing vessels:
📡 AIS - a tracking system that broadcasts ship locations, but can be turned off or tampered with
🛰️ SAR - satellite radar that detects large vessels, even if they aren’t using AIS
#SatelliteImagery #AIS #copernicus #Sentinel1
jenraynor.bsky.social
Using AI + Earth observation satellites, we analyzed industrial fishing activity in 1380 fully and highly protected MPAs spanning almost 8 million square kilometers around the globe. These are places where industrial fishing is completely banned. Here’s what we did and found 👇
jenraynor.bsky.social
We asked a simple but high-stakes question: Do industrial fishers actually follow the rules in the world’s most strictly protected marine areas?
💡The assumption: Probably not. MPAs are remote, hard to police, and often seen as paper parks.
💡The reality: Little to no illegal activity in most places.
jenraynor.bsky.social
Why do some say marine protected areas are just “paper parks”? And are industrial fishers actually staying out of these no-fishing zones?

New in @science.org: We used AI + satellite radar to find out. doi.org/10.1126/scie...

#ScienceResearch #OceanConservation #OceanTransparency #30x30 #Fisheries
Underwater image of a sea lion hunting salema fish in the Galapagos Marine Reserve.