Ludovic Hoarau
@ludovichoarau.bsky.social
PhD Mesophotic Coral Ecosystems
Our article made the cover of @esajournals.bsky.social Ecosphere Naturalist🤩🪸!
We describe a mesophotic animal forest formed by large gorgonians off northwestern coast of Reunion Island. Refuge for biodiversity but vulnerable in need of protection!
esajournals.onlinelibrary.wiley.com/toc/21508925...
We describe a mesophotic animal forest formed by large gorgonians off northwestern coast of Reunion Island. Refuge for biodiversity but vulnerable in need of protection!
esajournals.onlinelibrary.wiley.com/toc/21508925...
Ecosphere: Vol 16, No 9
<em>Ecosphere</em> is an open access journal publishing research in all areas of ecology, spanning multidisciplinary fields, from computer science to social sciences and eco-education.
esajournals.onlinelibrary.wiley.com
September 3, 2025 at 4:53 AM
Our article made the cover of @esajournals.bsky.social Ecosphere Naturalist🤩🪸!
We describe a mesophotic animal forest formed by large gorgonians off northwestern coast of Reunion Island. Refuge for biodiversity but vulnerable in need of protection!
esajournals.onlinelibrary.wiley.com/toc/21508925...
We describe a mesophotic animal forest formed by large gorgonians off northwestern coast of Reunion Island. Refuge for biodiversity but vulnerable in need of protection!
esajournals.onlinelibrary.wiley.com/toc/21508925...
Reposted by Ludovic Hoarau
What is the #BBNJ and why does it matter?
The Biodiversity Beyond National Jurisdiction (BBNJ) Agreement is a landmark global treaty to protect life in the High Seas, the vast ocean areas beyond any one country’s borders. 🧵👇
The Biodiversity Beyond National Jurisdiction (BBNJ) Agreement is a landmark global treaty to protect life in the High Seas, the vast ocean areas beyond any one country’s borders. 🧵👇
August 20, 2025 at 7:00 AM
What is the #BBNJ and why does it matter?
The Biodiversity Beyond National Jurisdiction (BBNJ) Agreement is a landmark global treaty to protect life in the High Seas, the vast ocean areas beyond any one country’s borders. 🧵👇
The Biodiversity Beyond National Jurisdiction (BBNJ) Agreement is a landmark global treaty to protect life in the High Seas, the vast ocean areas beyond any one country’s borders. 🧵👇
Reposted by Ludovic Hoarau
New (OA) paper out today! This one's got crabs 🦀 AND #mesophotic reefs!
We looked at crab communities throughout Hawai‘i and down a 90 m depth gradient. They were more different across depth on one island than they were across the entire ~2,500 km stretch of the archipelago on shallow reefs.
We looked at crab communities throughout Hawai‘i and down a 90 m depth gradient. They were more different across depth on one island than they were across the entire ~2,500 km stretch of the archipelago on shallow reefs.
Cryptobenthic crab assemblages are more distinct across a 90 m depth gradient than 2500 km of shallow marine habitat in the Hawaiian archipelago - Scientific Reports
Scientific Reports - Cryptobenthic crab assemblages are more distinct across a 90 m depth gradient than 2500 km of shallow marine habitat in the Hawaiian archipelago
www.nature.com
July 28, 2025 at 6:17 PM
New (OA) paper out today! This one's got crabs 🦀 AND #mesophotic reefs!
We looked at crab communities throughout Hawai‘i and down a 90 m depth gradient. They were more different across depth on one island than they were across the entire ~2,500 km stretch of the archipelago on shallow reefs.
We looked at crab communities throughout Hawai‘i and down a 90 m depth gradient. They were more different across depth on one island than they were across the entire ~2,500 km stretch of the archipelago on shallow reefs.
Spotted at 65 m off Réunion 🇷🇪 — a potato grouper (Epinephelus tukula), critically endangered locally. #Mesophotic reefs may offer refuge where shallow zones no longer can. Vital ecosystems still understudied, yet key for conservation.
#DeepReefs #Reunion #Grouper
#DeepReefs #Reunion #Grouper
June 10, 2025 at 7:50 AM
Spotted at 65 m off Réunion 🇷🇪 — a potato grouper (Epinephelus tukula), critically endangered locally. #Mesophotic reefs may offer refuge where shallow zones no longer can. Vital ecosystems still understudied, yet key for conservation.
#DeepReefs #Reunion #Grouper
#DeepReefs #Reunion #Grouper
Reposted by Ludovic Hoarau
The graphic shows bleaching thresholds in different events on the Great Barrier Reef. X-axis is NOAA’s Degree Heating Weeks metric. Source: www.cell.com/current-biol...
Emergent properties in the responses of tropical corals to recurrent climate extremes
Hughes et al. quantify the extent of five episodes of coral bleaching on the Great
Barrier Reef caused by anthropogenic heating. Bleaching thresholds vary spatially
and temporally, depending on the ec...
www.cell.com
June 1, 2025 at 1:22 AM
The graphic shows bleaching thresholds in different events on the Great Barrier Reef. X-axis is NOAA’s Degree Heating Weeks metric. Source: www.cell.com/current-biol...
Reposted by Ludovic Hoarau
84% of the world’s coral reefs impacted in the most intense global coral bleaching event ever
ethicalmarketingnews.com
May 23, 2025 at 1:15 PM
84% of the world’s coral reefs impacted in the most intense global coral bleaching event ever
The 2nd paper of my PhD (Chapter 4) is out! #Coral recruitment in #RéunionIsland decreases with depth, showing distinct patterns across shallow (15m), upper (45m) & lower #mesophotic zones (75m) highlighting depth-driven variability of coral demographic processes.
link.springer.com/article/10.1...
link.springer.com/article/10.1...
Coral recruitment in mesophotic coral ecosystems is lower and taxonomically distinct from shallow environments at Reunion Island, southwestern Indian Ocean - Coral Reefs
Coral recruitment is an essential demographic mechanism that underpins the community structure and dynamics of coral reefs and facilitates post-disturbance coral recovery. However, information on cora...
link.springer.com
May 21, 2025 at 6:39 AM
The 2nd paper of my PhD (Chapter 4) is out! #Coral recruitment in #RéunionIsland decreases with depth, showing distinct patterns across shallow (15m), upper (45m) & lower #mesophotic zones (75m) highlighting depth-driven variability of coral demographic processes.
link.springer.com/article/10.1...
link.springer.com/article/10.1...
The 1st paper of my PhD (chap3) published ! We explored spatial variability of shallow and #mesophotic #coral ecosystems MCEs from 15 to 95 m at #ReunionIsland. We found diverse sessile benthic and coral communities: an essential baseline for MCEs #conservation.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Marked spatial heterogeneity of macro-benthic communities along a shallow-mesophotic depth gradient in Reunion Island - Scientific Reports
Scientific Reports - Marked spatial heterogeneity of macro-benthic communities along a shallow-mesophotic depth gradient in Reunion Island
www.nature.com
April 24, 2025 at 7:14 AM
The 1st paper of my PhD (chap3) published ! We explored spatial variability of shallow and #mesophotic #coral ecosystems MCEs from 15 to 95 m at #ReunionIsland. We found diverse sessile benthic and coral communities: an essential baseline for MCEs #conservation.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Ludovic Hoarau
If people still needed a wake up call, this should be it. We need Climate Action Now. Anything less is a failure to uphold our obligations to protect - for now, and into the future - Australia's biological and cultural heritage.
Heat exposure on Western Australian coral reefs is literally off the charts.
24 Degree Heating Weeks now at Ningaloo - the highest ever recorded.
6-8 DHW is lethal for most branching corals.
>20 is catastrophic.
coralreefwatch.noaa.gov/product/vs/m...
24 Degree Heating Weeks now at Ningaloo - the highest ever recorded.
6-8 DHW is lethal for most branching corals.
>20 is catastrophic.
coralreefwatch.noaa.gov/product/vs/m...
March 20, 2025 at 11:26 PM
If people still needed a wake up call, this should be it. We need Climate Action Now. Anything less is a failure to uphold our obligations to protect - for now, and into the future - Australia's biological and cultural heritage.
In case you missed it: 2024 was the world's warmest year since @noaa.gov records began in 1850.
Global surface temperature was 2.32°F (1.29°C) above the 20th-century average. The 10 warmest years since 1850 have all occurred in the past decade.
Global surface temperature was 2.32°F (1.29°C) above the 20th-century average. The 10 warmest years since 1850 have all occurred in the past decade.
January 22, 2025 at 2:48 PM