Dr. Luke Jeffrey
@jeffrethane.bsky.social
ARC DECRA Fellow | Biogeochemist | Senior researcher investigating the role of tree stems and their microbial communities within the global climate cycles. #Treethane #Methane #Wetlands #Carbon #Forests 🌱
(6/8) These systems are dynamic. Under low-oxygen conditions inside bark, some microbes can switch to producing methane or hydrogen — meaning climate change (e.g. flooding, warming) could alter these processes...
January 13, 2026 at 11:53 PM
(6/8) These systems are dynamic. Under low-oxygen conditions inside bark, some microbes can switch to producing methane or hydrogen — meaning climate change (e.g. flooding, warming) could alter these processes...
(4/8) Our lab and field experiments show bark microbes can remove multiple climate-relevant gases from the atmosphere, with particularly strong uptake and affinity for hydrogen.
January 13, 2026 at 11:53 PM
(4/8) Our lab and field experiments show bark microbes can remove multiple climate-relevant gases from the atmosphere, with particularly strong uptake and affinity for hydrogen.
(3/8) These bark microbes aren’t just living there — they’re active. Many use trace gases like #Hydrogen (H₂), #Methane (CH₄), and #CarbonMonoxide (CO) as #Carbon and energy sources.🦠
January 13, 2026 at 11:53 PM
(3/8) These bark microbes aren’t just living there — they’re active. Many use trace gases like #Hydrogen (H₂), #Methane (CH₄), and #CarbonMonoxide (CO) as #Carbon and energy sources.🦠
(2/8) Across 8 common Australian tree species (paperbarks, eucalypts, acacias, mangroves & more), bark contains trillions of microbial cells per m² — distinctly unique from soil or water communities.
January 13, 2026 at 11:53 PM
(2/8) Across 8 common Australian tree species (paperbarks, eucalypts, acacias, mangroves & more), bark contains trillions of microbial cells per m² — distinctly unique from soil or water communities.
(1/8) 🚨Thrilled to share our new research, now published on the cover of @science.org ! 🌳🦠
We discovered that tree #Bark — largely regarded as inert — hosts vast #Microbial communities that actively interact with the atmosphere. 🧵👇 www.science.org/doi/10.1126/...
We discovered that tree #Bark — largely regarded as inert — hosts vast #Microbial communities that actively interact with the atmosphere. 🧵👇 www.science.org/doi/10.1126/...
January 13, 2026 at 11:53 PM
(1/8) 🚨Thrilled to share our new research, now published on the cover of @science.org ! 🌳🦠
We discovered that tree #Bark — largely regarded as inert — hosts vast #Microbial communities that actively interact with the atmosphere. 🧵👇 www.science.org/doi/10.1126/...
We discovered that tree #Bark — largely regarded as inert — hosts vast #Microbial communities that actively interact with the atmosphere. 🧵👇 www.science.org/doi/10.1126/...
New #PrePrint by #PhD @jodittmann.bsky.social open for discussion on @egubg.bsky.social investigating the question: 'Are #GhostForests a substantial source of #Methane from #Reservoirs?' 👻🪵
👇
egusphere.copernicus.org/preprints/20...
👇
egusphere.copernicus.org/preprints/20...
November 19, 2025 at 9:45 PM
New #PrePrint by #PhD @jodittmann.bsky.social open for discussion on @egubg.bsky.social investigating the question: 'Are #GhostForests a substantial source of #Methane from #Reservoirs?' 👻🪵
👇
egusphere.copernicus.org/preprints/20...
👇
egusphere.copernicus.org/preprints/20...
One way to collect 500 mL of #methane ebullition from a #GhostForest in 8 m of standing water…
June 4, 2025 at 11:15 AM
One way to collect 500 mL of #methane ebullition from a #GhostForest in 8 m of standing water…
What a way to start the (sampling) day 👌 with @jodittmann.bsky.social
June 4, 2025 at 11:08 AM
What a way to start the (sampling) day 👌 with @jodittmann.bsky.social
Top winters day back at the Ghost Forest sampling for @jodittmann.bsky.social PhD projects. Plenty of ebullition bubbles down there!!
June 4, 2025 at 11:03 AM
Top winters day back at the Ghost Forest sampling for @jodittmann.bsky.social PhD projects. Plenty of ebullition bubbles down there!!
Our terrestrial #biogeochemistry research team in action yesterday investigating #GHG, #nutrient and #carbon fluxes in tropical wetland forests in the Northern Territory. #treethane
April 3, 2025 at 8:41 PM
Our terrestrial #biogeochemistry research team in action yesterday investigating #GHG, #nutrient and #carbon fluxes in tropical wetland forests in the Northern Territory. #treethane
Tropical fieldwork day 2. Only 102 mm of rain yesterday🙃A few pics between the deluge ⛈️
April 1, 2025 at 7:33 PM
Tropical fieldwork day 2. Only 102 mm of rain yesterday🙃A few pics between the deluge ⛈️
Fieldwork in the tropics - 12 degrees south 🐊⛈️🦟
March 31, 2025 at 8:35 PM
Fieldwork in the tropics - 12 degrees south 🐊⛈️🦟
New Zealand tree appreciation after a recent holiday. Amazing Redwoods, deadwoods, Kauri and Pohutukawa on the north island.
January 30, 2025 at 4:04 AM
New Zealand tree appreciation after a recent holiday. Amazing Redwoods, deadwoods, Kauri and Pohutukawa on the north island.
Recent #Fieldwork rekkie scouting out forested #wetland sites for new #PhD student Scott Cramb to investigate #tree dwelling trace gas #microbial communities and fluxes
November 26, 2024 at 12:05 AM
Recent #Fieldwork rekkie scouting out forested #wetland sites for new #PhD student Scott Cramb to investigate #tree dwelling trace gas #microbial communities and fluxes
Check out our new paper in STOTEN 🚨 #Groundwater discharge and bank overtopping drive large #Carbon exports from Indian #Sundarban #Mangroves 🍃 www.sciencedirect.com/science/arti...
October 13, 2024 at 11:12 PM
Check out our new paper in STOTEN 🚨 #Groundwater discharge and bank overtopping drive large #Carbon exports from Indian #Sundarban #Mangroves 🍃 www.sciencedirect.com/science/arti...
Another top day in the #Rainforest wrapping up a long term study of tree #Methane cycling for @jodittmann.bsky.social #PhD 🙌
September 24, 2024 at 12:41 AM
Another top day in the #Rainforest wrapping up a long term study of tree #Methane cycling for @jodittmann.bsky.social #PhD 🙌
Beautiful day for fieldwork measuring #rainforest #methane fluxes for @jodittmann.bsky.social ‘s #PhD.
May 28, 2024 at 1:38 AM
Beautiful day for fieldwork measuring #rainforest #methane fluxes for @jodittmann.bsky.social ‘s #PhD.