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John Dwyer

@john-m-dwyer.bsky.social
556 followers 352 following 96 posts

Plant ecologist at The University of Queensland. Rainforest lover and co-fur-parent of Rosalind and Barbara.

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Reposted by John Dwyer
José Cerca @naturalselection.bsky.social · 22/09/2026
V happy about this one (@brentcemerson.bsky.social @biodiversitysmns.bsky.social @hernmoral.bsky.social)et al Species have survived on oceanic islands for Mya despite occupying small geographic areas, facing environmental calamities and having low Ne. We discuss this w/ a focus on conservation. 1/2
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Ada Palmer @adapalmer.bsky.social · 18/09/2026
Kākāpō numbers pass 300 for the first time in 75 years. New Zealand’s flightless, nocturnal parrot now totals 325 birds, after a record 90 chicks fledged this season, built on the Department of Conservation’s recovery programme, which started with just 51 birds in 1995. DOC buff.ly/7YIOBd9
doc.govt.nz
Kākāpō population reaches new milestone
The official population of the critically endangered kākāpō has reached a recovery-era high of 325 birds.
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Jesse Lasky @laskyjr.bsky.social · 09/09/2026
awesome bsky.app/profile/newp...
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Bob Muscarella @bobmuscarella.bsky.social · 24/08/2026
Our paper on intraspecific variation of hydraulic traits in Puerto Rican 🇵🇷 trees, led by @smithmartin.bsky.social, is out @nature.com! www.nature.com/articles/s41... Also check out this very nice 'News & Views' by @profchoat.bsky.social & Erick Calderón-Morales: www.nature.com/articles/d41...
nature.com
Species intraspecific variation drives tropical forest drought resistance - Nature
Substantial intraspecific variation, together with species turnover, drives coordinated shifts in drought resistance such as increased embolism resistance and wider stomatal safety margins in drier fo...
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ForestPlots @forestplots.bsky.social · 08/07/2026
Measuring Amazon tree leaf traits, 40 years on. From the same trees collected by Al Gentry in 1983, Riley Fortier and colleagues assess the impacts of climate change on individual-level traits. onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
Individual Trees Respond to 40 Years of Climate Change Through Leaf Functional Trait Acclimation
We measured leaf traits from historic and contemporary herbarium specimens collected from the same individual trees in the southern Peruvian Amazon and compared trait changes to local changes in clim...
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Laura Boeschoten @lauraboeschoten.bsky.social · 30/07/2026
New paper! My current favourite: "Water Limits Radial Tree Growth More Than Light in an Everwet Subtropical Forest" -> with 3500 mm of rain and no distinct dry season, trees in Puerto Rico still grew more under wet conditions. @globalchangebio.bsky.social onlinelibrary.wiley.com/doi/10.1111/...
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Belinda Medlyn @bmedlyn.bsky.social · 22/06/2026
PhD position available: Predicting impacts of extreme heat on Australian forests The world is heating up and forests are starting to show the effects. Like maths? Love trees? Apply your skills to help understand and adapt vegetation to heat extremes! www.westernsydney.edu.au/schools/grs/...
Infra-red image of trees in whole-tree chambers during a heatwave
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ARC Centre of Excellence for Plant Success @coeplantsuccess.bsky.social · 29/06/2026
📢 New publication 'Evidence for a trade-off between growth rate and xylem #embolism resistance in 22 #Eucalyptus species' by Tiantian Pan et al. in @newphyt.bsky.social 🧪 #drought doi.org/10.1111/nph....
doi.org
Evidence for a trade‐off between growth rate and xylem embolism resistance in 22 Eucalyptus species
Examples of cross-sectional images of branchlets at 4× and 40×.
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Functional Ecology @funecology.bsky.social · 23/06/2026
📰Published📰Wood anatomical trait correlations with hydraulic efficiency and safety in an a seasonal wet tropical forest🌳 buff.ly/FF5YuqR 🧪🌍️
buff.ly
Wood anatomical trait correlations with hydraulic efficiency and safety in an a seasonal wet tropical forest
Julia Valentim Tavares, Samuel L. Farrar, Chris M. Smith-Martin, Silvia Bibbo, Kasia Ziemińska, Farah Brenda Solis Petz, María Uriarte, Jess K. Zimmerman, Robert Muscarella This is a plain language…
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Bob Muscarella @bobmuscarella.bsky.social · 19/06/2026
New paper on sampling for vessel traits in wood anatomical studies! A short 🧵... Wood anatomical traits can provide great info on ecophysiology, ecology, and evolution but it takes a lot of painstaking work to quantify them! academic.oup.com/aob/advance-... @juliavtavares.bsky.social
academic.oup.com
How much cross-sectional area is needed to estimate vessel traits in tropical tree branches?
AbstractBackground and Aims. Wood anatomical traits provide key insights to plant physiology, ecology, and evolution but their quantification is time-consu
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Brendan Choat @profchoat.bsky.social · 09/06/2026
PhD Scholarship to work in the beautiful Blue Mountains! Drought and heat stress responses of temperate forest trees growing across a broad environmental gradient Applications close June 30 Must be Australian citizen, permanent resident, or NZ citizen to be eligible. PS2026_034_CS0791892_HIE
Blue Mountains
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Tommaso Jucker @tommaso-jucker.bsky.social · 18/05/2026
New paper out today @currentbiology.bsky.social led by Toby Jackson and Lucy Beese shows the profound impact that liana cutting has on the structural recovery of logged tropical forests 📜 doi.org/10.1016/j.cu...
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Justin S. Mankin @jsmankin.bsky.social · 13/05/2026
Rainfall intensity matters as much as how much rain falls. New in Nature: Corey Lesk and I show that daily-scale concentration of precipitation dries the land over the long-run, an effect as strong as total precipitation is climatological wetting. Paper here: www.nature.com/articles/s41...
nature.com
More concentrated precipitation decreases terrestrial water storage - Nature
Concentration of precipitation in large events decreases land water availability, and this effect will further increase with a future warming climate.
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Alice Rosen @alice-rosen.bsky.social · 11/04/2026
The first paper from my PhD is now out in the world 🌲📖 Modelling forest dynamics using IPMs and repeat lidar doi.org/10.1002/rse2...
Pipeline for integrating lidar data with structured demographic models for ecological inference. (a) Forest populations are surveyed at appropriate time intervals with a lidar scanner to produce high-resolution 3D point clouds. Point clouds are processed into canopy height models (CHMs) and digital terrain models (DTMs). (b) Individual tree segmentation is performed using a CHM-based algorithm (e.g. Dalponte & Coomes, 2016). (c) Relevant environmental variables are derived. For example, TWI is an indicator of soil moisture accumulation (Kopecký et al., 2021) and is calculated from the DTM. Local competition is inferred from the canopy density surrounding each tree, using the CHM. (d) Trees are matched across time points using a crown-matching algorithm (Battison et al., 2024; Olsoy et al., 2024), before measuring changes in size and classifying mortalities. (e) Continuous traits (e.g. height and crown area) are evaluated for their ability to predict survival and growth across the life cycle. (f) Selected traits and environmental parameters are used to model the vital rates using regressions. (g) The integral projection model (IPM) is constructed based on the selected vital rate models and key life history traits (e.g. mean life expectancy, longevity, generation time) are calculated. (h) Finally, IPM outputs are analysed to test ecological hypotheses.
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John Dwyer @john-m-dwyer.bsky.social · 06/04/2026
Sheesh, our place is gonna be worthless in 10 years…but it’ll be cooler than most, store a bunch of carbon and be teeming with critters. www.abc.net.au/news/2026-04...
abc.net.au
How one extra tree too close to your house could cost you thousands
Tree canopy coverage is being boosted in every capital city, but one micro-level analysis has found a link between property prices and the proximity of trees to houses.
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John Dwyer @john-m-dwyer.bsky.social · 03/04/2026
Millennium Park, Childers QLD. ⭐️⭐️⭐️⭐️⭐️ Clean facilities, interesting architecture, and one of Australia’s rarest trees, Alectryon ramiflorus (Isis Tamarind; Sapindaceae).
Park with shady rainforest trees and well designed public toilets.Crown of an Alectryon ramiflorus, a very rare dry rainforest tree species.Trunk with rough bark of an Alectryon ramiflorus, a very rare dry rainforest tree species.
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Maddy Seale @maddyseale.bsky.social · 02/02/2026
Out in @science.org this week. Soils drive convergence in the regulation of vascular tension in land plants. www.science.org/doi/10.1126/... #plantscience #ecophysiology
science.org
Soils drive convergence in the regulation of vascular tension in land plants
Terrestrial vascular plants operate under negative water potential, which results in hydraulic tension in the vascular system. Vascular tension varies with transpiration and soil drying and is regulat...
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Lizzie Wandrag @wandrag.bsky.social · 22/03/2026
New #plantandsoil #ecology #PhDposition available at the #ANU #FennerSchool led by the great Claire Foster. fennerschool.anu.edu.au/research/res...
fennerschool.anu.edu.au
PhD Project: Response of vegetation and soil communities to large herbivore exclusion
We are looking for a PhD candidate to investigate the effects of large herbivores (invasive deer, macropods) on above and belowground ecosystems, including soil properties and microbial communities.
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The Daily Show @thedailyshow.com · 13/03/2026
The guru behind Trump's Iran war is blissing out
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Julian Schrader @julianschrader.bsky.social · 11/03/2026
New paper out in @methodsinecoevol.bsky.social led by @westobymark.bsky.social and others The term ecosystem condition can imply an objective benchmark for what a “good” ecosystem state is. We argue for ecosystem valuation instead: it makes clear that assessing ecosystems involves value judgments.
besjournals.onlinelibrary.wiley.com
Ecosystem valuation: Concept, criteria and terminology
Furlaud et al. (2025) discussed how to measure ‘ecosystem condition’. Here, we argue that the term ‘ecosystem valuation’ should be preferred. ‘Valuation’ signals clearly that a social or political...
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Acid Rain @bearysweet.bsky.social · 10/03/2026
The Titicaca water frog (Telmatobius culeus) - the largest truly aquatic frogs in the world. They're found at 3,920m above sea level, in Lake Titicaca. These frogs are famous for their loose, baggy skin folds, which allow them to absorb oxygen directly from the water. #giantfrog #Titicaca
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People and Nature @peopleandnature.bsky.social · 06/03/2026
🚨 New podcast episode available now! 🌳 We speak to recently published People and Nature author Marilisa Herchet about the mental health benefits of urban green 🏙️ 🎙️ Listen on Soundcloud ➡️ buff.ly/eK1rfVy 🎙️ Listen on Spotify ➡️ buff.ly/3hWpQn7
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Julian Schrader @julianschrader.bsky.social · 09/03/2026
Exciting position at The School of Natural Sciences at Macquarie University. We are looking for an Associate Lecturer in Plant Ecology. A great opportunity to teach, mentor students and contribute to plant ecology research on the Wallumattagal Campus in Sydney.
mq.wd3.myworkdayjobs.com
Associate Lecturer in Plant Ecology
PRIMARY DETAIL - Salary package: $123,435 FTE (Level B.1) plus 17% employer's superannuation contribution and annual leave loading. - Full-time- 35 hours per week, fixed term for 36 months - Based at ...
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Jonathan Tonkin @jdtonkin.bsky.social · 09/03/2026
If you’re interested in modelling community turnover and/or community uniqueness (i.e. LCBD: local contribution to beta diversity), make sure you check it out. Paper: onlinelibrary.wiley.com/doi/abs/10.1...
onlinelibrary.wiley.com
Accounting for the Influence of Community Turnover Along Environmental Gradients on Compositional Uniqueness
Compositional uniqueness is commonly quantified using the Local Contribution to Beta Diversity (LCBD), which is typically regressed against environmental predictors. However, LCBD–environment relatio...
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Ella Cathcart-van Weeren @ecologyella.bsky.social · 09/03/2026
PhD Chap1 done! With an all-star cast, I built a reproductive phenology dataset by integrating flowering and fruiting observations from as many sources as possible. The dataset covers: 255yrs, most Subtropical rainforests in Aus, and 915 species. doi.org/10.1002/ecog...
Spatial distribution of reproductive phenology observations in Australian subtropical rainforest flora for three time periods: (a) 1770–1970, (b) 1971–2000 and (c) 2001–2025. The mapped region spans from 21 to 35°S and 150 to 155°E.
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Joey Politano🏳️‍🌈 @josephpolitano.bsky.social · 05/03/2026
Americans: we live in a fallen state—embroiled by sin, cheating, lying, and evil. You cannot trust anyone, not even those who claim to know you best Canadians: I love my neighbors and my friends!
A picture of PEW poll on global attitude survey, saying the % who rate the morality and ethics of people in their country as good vs bad, where the US has the worst rankings and Canada the best
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Australian Journal of Botany @ausjbotany.bsky.social · 05/03/2026
How do you age a tree that won't give up its rings? 🌳 Brigalow trees don't form annual rings — so researchers used radiocarbon dating to unlock their age. The result? These trees take ~150 years to mature, growing just 1.3 mm per year, informing the need for careful management. 📄 buff.ly/t4ZgpCA
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Peter Gleick @petergleick.bsky.social · 01/03/2026
The hot in the west was hotter than the cold in the east was cold. #climatechange
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Dr. Hilary Rose Dawson @hilaryrosed.bsky.social · 25/02/2026
Graminoids had the best heat tolerance, but plant growth form did not predict response to active warming in a #heatwave experiment led by @scienceanu.bsky.social PhD student Tom Hanley using @tern-aus.bsky.social AMRF infrastructure. doi.org/10.1111/jvs.70109 🧪 #ecology #ecophysiology #wildOz
Photograph of active warming perspex heatwave chambers deployed in an alpine grassland with distant mountain peaks and dramatic clouds.
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pieterarnold.bsky.social @pieterarnold.bsky.social · 27/02/2026
Proud of @biologyanu.bsky.social PhD student Tom Hanley's first paper. Huge effort in the field! @tern-aus.bsky.social AMRF infrastructure enabled us to simulate heatwaves while Tom followed the effect of the heat load on heat tolerance acclimation of photosystems over time doi.org/10.1111/jvs.70109
doi.org
Effective heating chamber design to simulate acute heatwaves and night‐time warming for ecological communities under natural field conditions
Heatwaves are increasing in intensity, duration and frequency. The impacts of such events can be extensive for natural ecosystems, but studying heatwaves in field conditions (in situ) remains chal...
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Mikko Jimenez @mikkojimenez.bsky.social · 21/02/2026
A study I led came out in Nature Cities yesterday! We used radar to study the role that urban landscapes play in migratory bird stopover. Spoiler: birds use cities a lot, and the patterns of their use reflect social processes and the inequities embedded in them. www.nature.com/articles/s44...
nature.com
Migratory bird stopover patterns linked to urbanization and social landscapes - Nature Cities
Urban ecology traditionally focuses on single cities, yet cities play key roles in ecological processes such as migration. Radar analysis across the continental USA reveals that nearly half of stopove...
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Belinda Medlyn @bmedlyn.bsky.social · 18/02/2026
So proud! Our brilliant PhD student Camille Sicangco's new paper just out in @newphyt.bsky.social : Testing stomatal optimisation models at high temperatures nph.onlinelibrary.wiley.com/doi/10.1111/...
nph.onlinelibrary.wiley.com
Weighing the options: a test of alternative stomatal optimisation models at high temperatures
Stomatal optimisation models centre upon a fundamental tradeoff for plants: opening stomata promotes carbon uptake, but closing stomata prevents water loss. However, stomatal opening can occur at hi...
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New Phytologist @newphyt.bsky.social · 28/01/2026
Global variation in the ratio of sapwood to leaf area explained by optimality principles Xu et al. @huiyingxu.bsky.social @lemontree-uofr.bsky.social nph.onlinelibrary.wiley.com/share/QQQWKU...
The sensitivities of the theoretical model to climate and hydraulic traits.
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bronte lee @brontelee.bsky.social · 26/01/2026
don’t even have words for this one
Police are investigating reports that a dog was allegedly driving a ute on a Tasmanian beach over the weekend.
Witnesses said the ute was seen being driven along White Beach at Nubeena about 9:30am Saturday, with a dog in the driver's seat.
"Witnesses reported that a white Mitsubishi Triton was being driven on the beach, with a dog in the driver's seat and a man in the passenger seat," a police spokesperson told Pulse.
Officers later located the vehicle, man and dog at a nearby property, with police confirming multiple reports were made about the incident.
Police are calling for witnesses or footage, including dashcam vision, as investigations continue.
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Hervé Sauquet @hsauquet.bsky.social · 13/01/2026
We've just created an exciting new Phylogenomics Botanist role to join our vibrant team at Botanic Gardens of Sydney and help us build the NSW Plant Tree of Life! Applications close 26 Jan 2026: iworkfor.nsw.gov.au/job/phylogen... #botanicgardens #nswflora #nswptol #phylogenomics
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Belinda Medlyn @bmedlyn.bsky.social · 06/01/2026
theconversation.com/yes-forest-t...
theconversation.com
Yes, forest trees die of old age. But the warming climate is killing them faster
The warming climate is killing Australia’s forest trees at a faster rate. This offers a glimpse of what may lie ahead for forests globally.
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ABC News Bot (unofficial) @abcnewsbot.bsky.social · 06/01/2026
From Tasmania to the Top End, Australia's forest trees are dying at higher rates due to climate change, according to new research.
abc.net.au
As the world warms, more trees are dying in Australian forests
From Tasmania to the Top End, Australia's forest trees are dying at higher rates due to climate change, according to new research.
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Tim Curran @timcurran.bsky.social · 06/01/2026
Pervasive increase in tree mortality across the Australian continent | Nature Plants share.google/RL9wdpMxxGRh...
share.google
Pervasive increase in tree mortality across the Australian continent - Nature Plants
Eight decades of forest plot monitoring show a pervasive increase in tree mortality across Australia’s forest biomes driven by climate change, jeopardizing their role as enduring carbon sinks.
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Joe Atkinson @joe-atkinson.bsky.social · 06/01/2026
✨ PhD opportunity studying drought and heatwave effects on threatened plants ✨🔥 Funded by an ARC DECRA awarded to the amazing Dr Ilaíne Matos and co-supervised by Dr Sami Rifai and me! Limited by the character limit here, so please see the attached flyer for all the details - please share widely!
PhD Opportunity in Plant Ecophysiology – Adelaide University
We are looking for an PhD candidate to join an exciting research project focused on understanding heat and drought combined impacts on threatened plants’ mortality.
Key Objectives:
Describe drought sensitivity in juvenile and mature individuals of threatened plant species.
Disentangle the effects of elevated temperature, soil dryness, and atmospheric water demand on the sensitivity of threatened species to hotter droughts.
Model threatened species’ risk of mortality under current and future hotter droughts.
Eligibility:
Australians and international applicants with a completed Master's degree (GPA > 5.0) and/or a completed 4-year Bachelor with Honours (GPA > 5.0) in Plant Biology or related areas;
Proof of English proficiency (e.g. IELTS score > 6.5 or equivalent qualification), only for applicants who speak English as a second language.
Strong analytical and programming skills in R or  Python.
Genuine interest in studying plants with previous experience in plant ecology and/or physiology.
Effective writing skills; a passion for reading, writing, and continually improving as a communicator.
Ability to drive in Australia is desirable but not essential.
Start Date: April 2026 (negotiable)
Duration: 3.5 years
Benefits: PhD scholarship (tax-exempt stipend of $36,500 AUD p.a. + $3,000 AUD p.a. top up);
Higher stipend rate for Aboriginal and Torres Strait Islander candidates ($ 53,608 p.a.);
Relocation allowances for both domestic and international candidates;
Single Overseas Student Health cover for international applicants.
100% tuition fee waiver.
How to Apply:
Email the following documents to ilaine.matos@adelaide.edu.au before the 15th of February 2026. Women and people underrepresented in research are encouraged to apply. 
1-page cover letter explaining why you are interested in this position and your previous experiences relevant for this opportunity.
Curriculum Vitae in the Adelaide University format.
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Anke Hildebrandt @ankehildebrandt.bsky.social · 16/12/2025
PhD opportunity Back to the roots! Can plants avoid water stress by moving water uptake to deeper soil? Find out in this IMPRS PhD project, coop with @chriswernerlab.bsky.social, @bernhardschuldt.bsky.social and a whole consortium investigating plant hydraulics 👉 More info: shorturl.at/66nBa
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Tim Curran @timcurran.bsky.social · 27/12/2025
This was a nice little Christmas present, with Boyd Wright and Rod Fensham. Vegetation flammability contributes to alternative stable states in arid Australia #flammability #Triodia connectsci.au/wf/article/d...
connectsci.au
Vegetation flammability contributes to alternative stable states in arid Australia
Background. Alternate stable state theory holds that disturbance thresholds can drive transitions between distinct vegetation types that exist under otherw
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John Dwyer @john-m-dwyer.bsky.social · 12/12/2025
What a lovely job.
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John Dwyer @john-m-dwyer.bsky.social · 12/12/2025
I love a normalized rumple index 👇
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Àlex Giménez Romero @agimenezromero.bsky.social · 09/12/2025
New article out in Ecology Letters! Developing a general math model, we show how cross-stage interactions modify the stability predicted by classic unstructured models. 📄 Population Structure Plays a Key Role in Community Stability. @ox.ac.uk @ifisc.uib-csic.es @ceabcsic.bsky.social @csic.es
doi.org
Population Structure Plays a Key Role in Community Stability
Population structure is a widespread yet underappreciated feature of ecological communities. Here, we develop a general theoretical framework integrating life-stage structure into community matrix mo...
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Tommaso Jucker @tommaso-jucker.bsky.social · 09/12/2025
🚨Join the International Dendrometer Network🚨 We're building a community of people using dendrometers to study tree growth, stress, resilience, phenology & more🌳🧪 Join our mailing list for updates, data calls & opportunities: forms.gle/SrdMLcg5BAN9... First meeting is Friday at 10:30CET - join us!
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Yadvinder Malhi @ymalhi.bsky.social · 09/12/2025
Fascinating new paper by @andrewabraham.bsky.social on how salt starvation shapes the abundance of large animals in Africa - the thread below explains the science … 🌐
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Ecological Society of Australia @ecolsocaus.bsky.social · 27/11/2025
Congratulations to the ESA Gold Medal Award winner Dr Suzanne Prober 👏 #ESA2025
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Tommaso Jucker @tommaso-jucker.bsky.social · 26/11/2025
🚨Paper alert🚨 Check out Beibei Zhang's latest work out today @royalsocietypublishing.org where we track the 3D structural recovery of Australia's Great Western Woodlands following wildfires over a chronosequence spanning half a millenia!🌳🛰️🔥🧪 royalsocietypublishing.org/doi/10.1098/...
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ESA Journals @esajournals.bsky.social · 10/11/2025
🆕 in "Ecological Monographs": Static models miss the mark—adding nonlinear, density-based facilitation helps predict coexistence, persistence, and realistic community dynamics 📄Neighbor density-dependent facilitation promotes coexistence and internal oscillation doi.org/10.1002/ecm....
Schematic illustrating how species interactions can depend on neighborhood density and identity.
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Malte Jochum @maltejochum.bsky.social · 28/10/2025
Check this out: the global biomass of mammals since 1850 just out in @natcomms.nature.com www.nature.com/articles/s41... 🌐
nature.com
The global biomass of mammals since 1850 - Nature Communications
Here, the authors estimate mammalian biomass from the 1850’s to today, tracking an increase of over five-fold in human and domesticated mammal biomass and a two-fold decrease in wild mammal biomass. R...
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