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James Guest

@james-guest.bsky.social
226 followers 247 following 13 posts

Reader in Coral Reef Ecology at Newcastle University. PI of The Coralassist Lab. Favorite activity: swimming over a healthy coral reef!

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James Guest @james-guest.bsky.social · 21/02/2026
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James Guest @james-guest.bsky.social · 31/08/2025
Hilarious, this is spot on: www.theguardian.com/lifeandstyle...
theguardian.com
No moaning about the teachers and definitely no nudes! How to survive the school WhatsApp group
With the new school year starting next week, parents’ WhatsApp groups are pinging back into action. Here are the rules you must follow to avoid disaster
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James Guest @james-guest.bsky.social · 09/08/2025
www.theguardian.com/commentisfre...
theguardian.com
Tuition fees are rising again and nobody is happy – it’s time to actually fix our broken university sector | Zoe Williams
The figures simply don’t add up for higher education in England and Wales. Yet delusional politicians from all parties seem intent on avoiding the issue, says Guardian columnist Zoe Williams
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James Guest @james-guest.bsky.social · 07/08/2025
At last...Wordle in 1 today 😎
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James Guest @james-guest.bsky.social · 07/07/2025
New Coral Reef article alert ftom the Coralassist Lab! rdcu.be/evbqK showing the dramatic effects of grazing pressure on early coral survivorship. @newcastleuni.bsky.social @erc.europa.eu
rdcu.be
Grazing deterrents improve survival of outplanted juvenile corals
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James Guest @james-guest.bsky.social · 02/06/2025
There are many lies told by politicians when it comes to immigration in the UK, but none is bigger than the claim that it’s all too easy: www.theguardian.com/commentisfre...
theguardian.com
I got British citizenship via the five-year route. Labour’s new 10-year rule will cause untold pain | Nesrine Malik
Starmer claims to want integration. Yet denying people safety, belonging and the right to vote for a decade amounts to the exact opposite, says Guardian columnist Nesrine Malik
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James Guest @james-guest.bsky.social · 31/05/2025
wildshores.blogspot.com/2025/05/cora...
wildshores.blogspot.com
Coral spawning muted in 2025 after mass coral bleaching in 2024
Once a year, on the fourth month, around four days after the fourth full moon of the year, our corals release eggs and sperm all at the same...
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James Guest @james-guest.bsky.social · 19/05/2025
My island of strangers: a poem | Michael Rosen
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James Guest @james-guest.bsky.social · 05/05/2025
UK wins £500m in science grants from EU Horizon scheme after Brexit lockout
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James Guest @james-guest.bsky.social · 17/04/2025
This blog really resonated with me describing the unseen work behind the papers that we publish: www.springernature.com/gp/researche...
springernature.com
Behind the results: Nature Portfolio authors speak about the unseen efforts underlying their research | For Researchers | Springer Nature_________
Read about the unseen work behind ground-breaking research as Nature Portfolio authors share their experiences. Gain insights into the scientific
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PLOS Climate @plosclimate.org · 18/03/2025
Explore some of the wide-ranging research on climate and coral reefs published in our journal 👇 latitude.plos.org/2025/03/cora...
latitude.plos.org
Coral reef research in PLOS Climate - Latitude
Coral reefs are among our planet’s most complex and biodiverse ecosystems and play vital roles in social-ecological systems, but they are also…
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PLOS Climate @plosclimate.org · 07/03/2025
New on the Latitude blog: a round-up of some of the wide-ranging and interdisciplinary research and commentary on climate and coral reefs published in PLOS Climate. latitude.plos.org/2025/03/cora...
latitude.plos.org
Coral reef research in PLOS Climate - Latitude
Coral reefs are among our planet’s most complex and biodiverse ecosystems and play vital roles in social-ecological systems, but they are also…
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James Robinson @james-robinson.bsky.social · 15/02/2025
**2 weeks** left to apply - come join me and @lec-reefs.bsky.social at Lancaster University.
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James Guest @james-guest.bsky.social · 01/02/2025
New paper alert! Congrats to Ruben de la Torre Cerro on publishing the first chapter of his PhD on how moonlight-darkness cycles affect spawning timing in an Acropora coral: link.springer.com/article/10.1...
link.springer.com
Evaluating the role of moonlight-darkness dynamics as proximate spawning cues in an Acropora coral - Coral Reefs
For sessile broadcast spawning marine invertebrates, such as corals, successful sexual reproduction depends on conspecifics spawning synchronously. The precise monthly, lunar, and diel timing and the ...
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UBC Oceans @ubcoceans.bsky.social · 09/01/2025
RESEARCH: Higher spatial resolution is not always better: evaluating satellite-sensed #sea surface temperature products for a west Pacific #coral reef system. Coauthored by @simondonner.bsky.social r . www.nature.com/articles/s41... via @natureportfolio.bsky.social
nature.com
Higher spatial resolution is not always better: evaluating satellite-sensed sea surface temperature products for a west Pacific coral reef system - Scientific Reports
Scientific Reports - Higher spatial resolution is not always better: evaluating satellite-sensed sea surface temperature products for a west Pacific coral reef system
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Simon Donner @simondonner.bsky.social · 09/01/2025
Attention coral reef scientists...
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Simon Donner @simondonner.bsky.social · 08/01/2025
OK, I'm biased... but I'm a big fan of this new paper by @liamlachs.bsky.social, which emerged from his visit to UBC. The message: don't just grab the highest resolution data. You need to evaluate what is suitable for your specific location and research question. www.nature.com/articles/s41...
nature.com
Higher spatial resolution is not always better: evaluating satellite-sensed sea surface temperature products for a west Pacific coral reef system - Scientific Reports
Scientific Reports - Higher spatial resolution is not always better: evaluating satellite-sensed sea surface temperature products for a west Pacific coral reef system
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Ana Palacio @anapalacio.bsky.social · 16/11/2024
🪸The Coral Reef Feed hopes to build a Bluesky community of scientists, students, managers, enthusiasts, communicators, artists, etc. that care about coral reefs and climate change bsky.app/profile/did:...
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Dr Tom Harris @drtomharris.bsky.social · 17/12/2024
Corals need to be close to their partners to reproduce, just a few meters. This has implications for bleaching event recovery which can leave individuals stranded, hampering reef re-population. Story: www.uq.edu.au/news/article... #coralreef #globalwarming #oceanhealth #biodiversity
uq.edu.au
Corals depend on near neighbours to reproduce
A new study reveals corals must be within only a few metres of each other to successfully reproduce, leaving them vulnerable in a warming world.
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Liam Lachs @liamlachs.bsky.social · 14/10/2024
Paper was led by Adriana Humanes, Liam Lachs & James Guest Part of the fruitful Coralassist Lab - PICRC collaboration, with support from the Horniman Museum, Uni. Of Exeter, Derby Uni. & Uni. Victoria Funded by ERC, with support from UKRI / NERC (9/9)
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Liam Lachs @liamlachs.bsky.social · 14/10/2024
Our study shows selective breeding is feasible, yet potential heat tolerance gains are modest compared to expected future warming. R&D is needed to optimise breeding interventions and maximise positive impacts. Ultimately, reefs still depend on rapid reductions in greenhouse gas emissions. (8/9)
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Liam Lachs @liamlachs.bsky.social · 14/10/2024
Offspring bred for short-stress tolerance did not show evidence of enhanced tolerance to the long-term stress that more closely emulates marine heatwaves. To maximise coral fitness in the face of climate change, care will be needed when selecting which traits to breed for. (7/9)
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Liam Lachs @liamlachs.bsky.social · 14/10/2024
Nature vs. Nurture: The heritability of heat tolerance traits was ~0.2-0.3. This means these traits have a substantial genetic basis but are also heavily influenced by other non-genetic factors. (6/9)
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Liam Lachs @liamlachs.bsky.social · 14/10/2024
Offspring whose parents had high (rather than low) heat tolerance showed an enhanced ability to withstand the type of heat stress for which they were bred. They can withstand the heat stress for a longer duration before the onset of bleaching and mortality. (5/9)
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Liam Lachs @liamlachs.bsky.social · 14/10/2024
Then offspring were reared in an ocean nursery until they reached reproductive maturity themselves at 3-4 years old. At this stage, the offspring were exposed to the same heat stress tests that were used years before to select their parents. (4/9)
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Liam Lachs @liamlachs.bsky.social · 14/10/2024
Selective breeding was conducted for the bleaching survival response of wild corals to both: - a short-term ~1-week +3.5 °C heat stress - long-term ~1-month +2.5 °C heat stress (3/9)
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Liam Lachs @liamlachs.bsky.social · 14/10/2024
Marine heatwaves are triggering mass coral bleaching & mortality events. Whether corals can adapt fast enough remains uncertain, leading to calls for assisted evolution. Since 2017, the Coralassist Lab & PICRC Palau have been testing whether selective breeding is a feasible option. (2/9)
Photo credit: Rob van Woesik
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Liam Lachs @liamlachs.bsky.social · 14/10/2024
📢New Paper Alert📢 Selective breeding enhances tolerance of corals to marine heatwaves Take-home messages: - Breeding corals for heat tolerance is feasible - R&D is now needed to optimise outcomes - Not a silver bullet solution - We still need rapid climate action bit.ly/4h0Tc0P (1/9)
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Liam Lachs @liamlachs.bsky.social · 18/11/2024
Thanks to Amanda Bates for her thoughts on how the recent paper from my PhD at the Coralassist Lab (on the variability of coral heat tolerance among reefs) contributes to thermal biology and conservation more broadly. doi.org/10.1016/j.tr...
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Liam Lachs @liamlachs.bsky.social · 29/11/2024
Thanks to all the other supportive groups & institutions helping fuel ideas in our field: PICRC AIMS, @newcastleuni.bsky.social Coralassist Lab, University of Queensland, @ubcoceans.bsky.social, Southern Cross Uni (12/12)
credit: Liam Lachs
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Liam Lachs @liamlachs.bsky.social · 29/11/2024
Thanks for supporting this work: @ukri.org NERC, ONEPlanet DTP, ERC Research, Mitacs Canada, @rgsibg.bsky.social @icrs.bsky.social IDEAWILD & wonderful coauthors: YM Bozec, J Bythell, @simondonner.bsky.social, H East, AJ Edwards, Y Golbuu, M Gouezo, J Guest, A Humanes, C Riginos & P Mumby (11/12)
credit: Liam Lachs
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Liam Lachs @liamlachs.bsky.social · 29/11/2024
📢New Paper Alert📢 on corals and climate change in Science Adaptation via natural selection could determine whether Acropora corals persist under expected levels of global warming Hyperlinks & explainer thread below ⬇️ (1/12)
credit: Liam Lachs
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Liam Lachs @liamlachs.bsky.social · 08/12/2024
Wednesday in Tulum: James Guest at 11.30am on a 5- year selective breeding trial & myself at 12.00pm on natural adaptation and importance of which trait we choose for breeding
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Liam Lachs @liamlachs.bsky.social · 08/12/2024
Can we selectively breed Acropora corals for heat tolerance? Two upcoming Coralassist Lab talks on adaptation & breeding @coralconsortium.bsky.social #ReefFutures Feasibility & lessons learned from Pacific context building on our 2 new papers: doi.org/10.1126/scie... rdcu.be/d2RhM
doi.org
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Liam Lachs @liamlachs.bsky.social · 13/12/2024
Delighted to see our paper out in Science Magazine today. And congrats for the amazing picture James Guest! www.science.org/doi/10.1126/...
science.org
In Science Journals
Highlights from the Science family of journals
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