Romaric Jac

@romaricjac.bsky.social

PhD candidate at Université du Québec | Capelin migrations | Otolith chemistry | Fisheries ecology | Movement behaviour

New research from @romaricjac.bsky.social et al show that deep-water cartilaginous fishes, along with some of their prey species, are expanding their ranges northward into Arctic regions, highlighting how climate change may reshape marine biodiversity and species distributions. plos.io/4sYteQX

Moving north: Warmer waters expand populations of deep-water cartilaginous fishes into Arctic waters

Continental shelf and deep ocean ecosystems are increasingly exposed to anthropogenic pressures including commercial fishing and climate change related environmental stressors. Among the most…

journals.plos.org

Climate-driven shifts aren't just happening at the surface. Using 26 years of data, we show that deep-water sharks and chimaeras are moving northward into Arctic waters🦈 Their prey are moving too, suggesting that the entire deep-sea community is on the move. Read it here👉 doi.org/10.1371/jour...

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Excited to share our first paper on capelin otolith chemistry in the Gulf of St. Lawrence. We reveal stable, region-specific signatures over time, a key first step toward tracking natal origins and migrations. Many exciting questions ahead! Read here 👉 www.sciencedirect.com/science/arti...

Multi-year stability of spatial patterns in capelin otolith-edge chemical fingerprints in the Gulf of St. Lawrence, Canada

In the Gulf of St. Lawrence (GSL, Canada), the population structure and dynamics of capelin (Mallotus villosus), an abundant small pelagic forage fish…

sciencedirect.com

We are hiring: #PhD fellow in Ecosystem-based management and marine connectivity🐋🧪🛰️ Want to work with tracking data from migratory species to identify ecological corridors and help inform biodiversity conservation priorities? Apply by Dec 7th! @bioprotectproject.bsky.social tinyurl.com/ytfmfhfc

PhD Fellow in Ecology/Ecosystem-Based Management (289259) | UiT The Arctic University of Norway

Job title: PhD Fellow in Ecology/Ecosystem-Based Management (289259), Employer: UiT The Arctic University of Norway, Deadline: Sunday, December 7, 2025

jobbnorge.no

Hard to believe it has been over 10 years since I discovered this NEW SPECIES of ghost shark during #AlienShark on @SharkWeek. I named the species the SeaFarer’s Ghost Shark (Chimaera willwatchi) for my hard working friends onboard the fishing vessel Will Watch. 🤩🦈

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I've waited a decade to finally have the chance to work with this ghost #shark 👻🦈 legend. While we were geeking away on this giant beast, we also got word that the first and only Ghost Sharks of the World book finally has a released date. Coming to you January 2026!

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Super eager about leading my first tracking project!! Huge thanks to @saveourseas.bsky.social for funding our #SASF_GhostTrack project!! Can’t wait to see what the data will look like 🦈

Bergen Telemetry Network@bergentelemetry.bsky.social · last yr.

🚨 New project 🚨 @saveourseas.bsky.social is funding our #SOSF_GhostTrack project - we’re tracking ghost sharks, Chimaera monstrosa, around Bergen city! Read more here: www.bergentelemetry.com/post/excitin... @lottesdahlmo.bsky.social #trackingnotslacking