@guillaumedauphin
Science Advisor - Climate Change Science (Research Scientist👨🔬) 🇫🇷🇪🇺🇨🇦 Atlantic salmon population dynamics & cleaning up historical datasets 🐟 📈 R aficionado 🖥️ Cat parent 🐈🐈⬛ Occasional artist 🎨🖌️ 342 ppm All views are my own
Day 2 of #EDITO workshop starts with summaries from the 4 sessions : first on #Ocean health and specifically on #BlueCarbon - session relates to @emarineboard.bsky.social policy #Science documents on that and coastal resilience www.marineboard.eu/publications... www.marineboard.eu/publications...
Excellent piece by Matz @heatshok.bsky.social and colleagues discussing the dire status of Caribbean reefs, and potential plans and policies that can be implemented if these reefs are to have any chance. Check it out in PNAS!
Was pleased to join @perrybaconjr.bsky.social on @newrepublic.com to talk about the Maduro capture and what it means. newrepublic.substack.com/p/the-us-dep...
No Christmas truce at the bird feeder, this sharpie has been terrorizing the backyard all morning!
Agreed, but tell the journal editors and reviewers too!
We analysed 73,000 articles and found the UK media is divorcing ‘climate change’ from net zero
theconversation.com/we-analysed-...
Kakapo, the world's only flightless parrot, has enjoyed its most productive breeding season since 1977:
While we could understand that the crumbling world order is likely driving these choices, @lindamcquaig.bsky.social conclusion is not wrong. We are trading off a livable planet for a potential quick response to the current geopolitical crisis. That’s not a good deal.
www.thestar.com/opinion/cont...
The obsession with “star scientists” and “attracting top talent” fundamentally misunderstands research and higher education.
Create a healthy environment that is attractive to all manner of scientists. Because that run of the mill, non-transformative, maybe slightly boring research matters, too.
The background show climate stripes representing change in air temperature as measured in Canada1860s to the 2020s (the darker the blue and red, the colder and warmer are the years, respectively) using @edhawkings.org website as an inspiration bit.ly/3KCEykV
It shows a juvenile boxfish which sightings have become more and more common in Nova scotia water among other tropical fish species.
Like every year I did a homemade holidays season cards 🎅🌲❄️.
I figured I would make it on theme with my new assignment and make it related to the impacts of climate change on oceans.
#ShowYourStripes #SciArt #ClimateArt #OceanWarming #ClimateChange
#ClimateData #Watercolor #ScienceCommunication
Authors: T Imlay, G Chaput, G Dauphin, C Breau, L Weir L & colleagues
@DFO 🐟🍁
7/7
It’s not just about how many salmon return: it’s about who returns. Maintaining age and life-history diversity is key to resilience.
6/7
But for populations already struggling, shrinking body size and simpler age structures could make recovery even tougher.
5/7
Across all sites, we identified 171 distinct life histories, an incredible range of strategies showing how adaptable salmon can be.
4/7
Other rivers show the opposite: bigger, older fish and more repeat spawners returning. These populations may be better buffered against climate and ecosystem shifts.
3/7
Some rivers show salmon getting smaller and younger, with fewer life-history types. That loss of diversity can make populations less resilient to environmental change.
2/7
New paper out 🐟📏📉📈!
We explored 50 years of data from 14 Atlantic salmon populations across Eastern Canada to see how body size, age, and life-history diversity have been changing.
bit.ly/3KAvUDt
@icesmarine.bsky.social
🧵👇
1/7
Bottom line: BCEs offer valuable ecosystem services and may help buffer coastal acidification in specific contexts, but the mechanisms, magnitudes, and management implications require deeper investigation. This synthesis provides a roadmap for that work.
8/8
The report calls for synthesis efforts, improved modelling, comparative field programs, and cross-disciplinary collaboration to advance shared understanding of the OA–blue carbon nexus.
7/8
Key knowledge gaps include:
• quantifying lateral DIC and alkalinity export
• integrating carbon and alkalinity budgets
• resolving the fate of exported organic carbon
• understanding BCE responses under future climate scenarios
• methodological alignment across OA and BC research communities
6/8
Climate-driven changes—warming, sea-level rise, deoxygenation, salinity shifts—pose significant risks to BCE function. Their impacts on carbon export, alkalinity flux, and buffering capacity remain poorly quantified and a major research priority.
5/8
Management strategies (conservation, restoration, creation, enhancement) show uneven evidence for acidification mitigation. Conservation consistently provides the strongest potential benefits. Restoration and enhancement may help locally but remain highly context-dependent.
4/8
The report highlights that BCEs are unlikely to mitigate ocean acidification at global scales, but can influence local coastal chemistry (sometimes positively, sometimes not) depending on DIC to total alkalinity ratios, carbon fate, and physical transport processes.
3/8
Blue carbon ecosystems (BCE) store and cycle carbon in ways that can locally influence coastal pH. Their capacity to buffer acidification depends on carbon export, alkalinity production, and ecosystem health. These dynamics vary widely among sites and ecosystem types.
2/8
New report out 🌊🌿🌡️:
a Canada–USA synthesis examining how coastal blue carbon ecosystems interact with ocean acidification. It reviews biogeochemical processes, management strategies, knowledge gaps, and future research priorities.
DOI: bit.ly/4oyxZ0M
🧵👇
1/8
Of the 99 needs, 43 require collaboration beyond DFO Science i.e., across sectors and departments.
This collective effort will help build a more climate-resilient DFO and support sustainable oceans, fisheries, and coastal communities across Canada.
#DFO #ClimateChange
8/8
Actionable science only matters if it reaches decision-makers.
Needs include improved data accessibility, decision-support tools, synthesis reports, and stronger science-policy interfaces.
Collaboration with Indigenous and intergovernmental partners is key.
7/8