Mary Heskel

@maryheskel.bsky.social

870 followers 120 following 15 posts

plant ecophysiologist, SLAC professor, studies plants and carbon across scales.

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Environmental science 45%

Agriculture 17%

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Mary Heskel @maryheskel.bsky.social · Nov 11

Hi all, I'll try to check in more often. Always looking for:

1) paid job/research opportunities to share with undergrads
2) cool ecophys/ecology stuff
3) connections for research & collaboration

I'm also reachable by my professional email, which is on my webpage: maryheskel.com

Plant Ecophysiology @ Macalester College – Studying leaves to landscapes in a changing world

maryheskel.com

Mary Heskel @maryheskel.bsky.social · 18h

I will see what I can do! I live in Saint Paul...but not sure you need proof of address for a card. This will be a hot commodity!

Mary Heskel @maryheskel.bsky.social · 12d

This is on a federal website. I shared with students so they are aware how dumb and middle-school bully inspired our current leaders are.

Mary Heskel @maryheskel.bsky.social · 12d

The USDA's shutdown messages are increasingly unhinged. I discovered this looking up lecture materials & the banner blamed the "Radical Left Democrats". Today's is much worse.
Other agencies have a simple, uncharged heading.

Reposted by Mary Heskel

Owen Atkin @owenatkin.bsky.social · 25d

An important paper - just out in @natureportfolio.nature.com documenting a decline in net C uptake by Australian rainforests. Eventually the same will occur in other rainforests - a reminder that we need to get to net zero ASAP. @biologyanu.bsky.social

www.nature.com/articles/s41...

Aboveground biomass in Australian tropical forests now a net carbon source - Nature

A transition from carbon sink to source for the aboveground woody biomass of moist tropical Australian forests has occurred, driven by increasingly extreme climate anomalies.

www.nature.com

Reposted by Mary Heskel

Eric Holthaus @ericholthaus.com · Oct 4

Looks like Minneapolis hit 90°F today, October 4th — the latest 90-degree day in city history.

Reposted by Mary Heskel

Christopher Krieg 🌿 @ckrieg.bsky.social · Sep 22

🚨 1 Week Left to Apply! 🚨
The Krieg Lab is hiring a Research Professional in Plant Ecophysiology & Evolution.

📅 Deadline: October 1, 2025
📧 Sending materials (Cover Letter, CV, References) to: kriegc[at]wfu.edu

Mary Heskel @maryheskel.bsky.social · Sep 10

Great post-bacc opportunity to work with @stotra.bsky.social and do field work in Kenya!

Stotra Chakrabarti, PhD @stotra.bsky.social · Sep 9

I am recruiting 1-2 postbacs for our NSF-funded Tsavo Simba Research Project, investigating fission-fusion! The position is for recent undergrads who have not yet started grad school. Come be a part of our team and help us track/monitor 🦁🌍🛰️📸🧪 Job ad⬇️

careers-macalester.icims.com/jobs/2221/po...

Reposted by Mary Heskel

Stotra Chakrabarti, PhD @stotra.bsky.social · Sep 9

Reposted by Jens‐Christian Svenning, Brian J. Enquist, Mary Heskel

GBIF Morpho 🦋 @gbifmorpho.bsky.social · Sep 9

High tree diversity exposed to unprecedented macroclimatic conditions even under minimal an…... by @bjenquist.bsky.social @jcsvenning.bsky.social published in Proceedings of the National Academy of Sciences using @gbif.org mediated data:

#CiteTheDOI: ✅

https://doi.org/10.1073/pnas.2420059122

High tree diversity exposed to unprecedented macroclimatic conditions even under minimal anthropogenic climate change | PNAS

Tree species worldwide face increasing exposure to unprecedented macroclimatic conditions due to anthropogenic climate change, which may trigger bi...

www.pnas.org

Mary Heskel @maryheskel.bsky.social · Aug 18

If you are interested in visiting my class and sharing a low-stakes 'invited talk', let me know! If you have a student who might be interested, please have them contact me - here or via my academic email (mheskel@macalester.edu).
Thanks!

Mary Heskel @maryheskel.bsky.social · Aug 18

Hi All!
I'm back from sabbatical and teaching Plant Ecophys again - a class near and dear to my heart! In the past, I've welcomed grad students and post-docs to share their research with students and their stories about how they got into the field.....

Mary Heskel @maryheskel.bsky.social · Jul 2

Also a statistics position is open at Macalester as well, also linked here. www.macalester.edu/provost/posi...

Mary Heskel @maryheskel.bsky.social · Jul 1

🧬 🧪 🧬 Tenure-track position in Molecular Genetics at @macalestercollege.bsky.social 🧬 🧪 🧬

Applications due Sept 15!

Please share and feel free to reach out to me via email or DM about working at Macalester/living in MN/etc!

careers.insidehighered.com/job/3365525/...

Biology - Assistant Professor - Molecular Genetics - Saint Paul, Minnesota job with Macalester College | 3365525

The Biology Department at Macalester College invites applications for a full-time tenure-track position at the level of Assistant Professor in the ...

careers.insidehighered.com

Mary Heskel @maryheskel.bsky.social · Jun 3

Make some into ice cream??

Reposted by Mary Heskel

Karolina Heyduk @kheyduk.bsky.social · May 13

The PLANTS program (funded by NSF) at @botsocamerica.bsky.social was a cornerstone of the conference each year, bringing together new-to-science scholars with more experienced mentors. It helped provide community, support, and connection to new scientists.

The grant was terminated last week.

Reposted by Mary Heskel

Rich Phillips @richphillipslab.bsky.social · May 6

This took a minute but excited to share it now link.springer.com/10.1007/s004... Trees get N by resorbing from foliage & foraging in soil - but are the two coordinated? We tested hypotheses about relationships between resorption & root production for 12 spp in mature forests & 9 spp in a garden.

Assessing carbon and nitrogen economics in temperate forests through the relationship between foliar nutrient resorption and root production - Oecologia

Plants both respond to and influence their immediate soil environment, which can yield divergent predictions regarding plant economics and trait coordination. Tree species with high foliar nitrogen (N...

link.springer.com

Mary Heskel @maryheskel.bsky.social · May 5

I have an advisee who is switching over from econ to environmental science/ecology who is awesome and would be a great summer researcher! He would love to get field experience and is open to all kinds of opportunities. Thanks!

Reposted by Mary Heskel, Tiziana A. Gelmi‐Candusso

Colin Carlson @colincarlson.bsky.social · May 3

There’s some inaccurate NSF information spreading and causing extra panic. New increments on existing awards are paused. But: to the best of my knowledge, drawdown (reimbursement) on existing increments is not paused. ACMS is still accessible. Could change at any moment, though. Please share.

Reposted by Mary Heskel

Stephanie Pau @stephpau.bsky.social · May 1

How does #hyperspectral leaf reflectance vary with functional traits, site, and evolutionary lineage in #grasses? New paper, part of a special issue "Advancing Spectral Biology to Understand Plant Diversity Across Scales", check it out: esajournals.onlinelibrary.wiley.com/doi/10.1002/...

Reposted by Mary Heskel

Victor Galaz @vgalaz.bsky.social · Apr 25

Would it be possible to sue major fossil fuel companies for the resulting climate damage using climate attribution science? This paper says 'yes'.

www.nature.com/articles/s41...

Carbon majors and the scientific case for climate liability - Nature

A transparent and reproducible scientific framework is introduced to formalize how trillions in economic losses are attributable to the extreme heat caused by emissions from fossil fuel companies, whi...

www.nature.com

Reposted by Mary Heskel

Owen Atkin @owenatkin.bsky.social · Apr 22

Great to work with Bruhn et al. on an article on RQ's (i.e. respiratory CO2 efflux:O2 uptake ratio) in plants. Typically we assume the fluxes to be in balance, but in many cases, they are not, with implications for C modeling.
@pplplantarum.bsky.social

onlinelibrary.wiley.com/doi/10.1111/...

Importance of the leaf respiratory quotient

Rates of leaf respiratory CO2-release (RCO2) are important for terrestrial biosphere models that estimate carbon exchange between plants and the atmosphere. Hitherto, models of RCO2 have primarily be...

onlinelibrary.wiley.com

Mary Heskel @maryheskel.bsky.social · Apr 17

@li-corenv.bsky.social - Please share the inspiration and behind the scenes of this 6800 vs 6400 photoshoot. It's giving distracted boyfriend meme.

Reposted by Michael A. Wulder, Ian J. Wright, Rosie A. Fisher , and 3 more Michael A. Wulder, Ian J. Wright, Rosie A. Fisher, Mary Heskel, Melissa Whitman, Rafael Candido‐Ribeiro

Sean Michaletz @seanmichaletz.bsky.social · Mar 13

Fully funded PhD in Plant Ecophysiology at UBC in Vancouver 🍁! Possible topics include leaf physiology, thermal ecology, microclimates, scaling, tree physiology, forest ecology & more. Start Jan/May/Sept 2026. michaletzlab.org
Please share!
#PlantEcoPhys #Ecology #Botany #PhDposition #GradSchool

Reposted by Owen K. Atkin, Mary Heskel

AoB PLANTS @aobp.bsky.social · Feb 21

🌱Exciting Opportunity!

AoB PLANTS is looking for a new Chief Editor as Professor Tom Buckley steps down this summer. This is your chance to lead a top-tier, open-access plant science journal.

✅ Download full job details 👉 https://wp.me/pdRZhH-lJv

Apply by 17 March!

AoB PLANTS is looking for a new Chief Editor as Professor Tom Buckley steps down this summer. This is your chance to lead a top-tier, open-access plant science journal.

Mary Heskel @maryheskel.bsky.social · Feb 12

That is fantastic - they will be my neighbors in Saint Paul :) Congrats!

Mary Heskel @maryheskel.bsky.social · Feb 5

Everything is terrible, but I bought this triangular shaped pasta at Trader Joe’s (“trianguletti”, pictured below), and my partner dubbed it “Sedge-etti”, which is an early contender for best wordplay of 2025.

#SedgesHaveEdges

Reposted by Guido Grosse, Brett J. Baker, Jennifer Pett‐Ridge , and 5 more Guido Grosse, Brett J. Baker, Jennifer Pett‐Ridge, Colin D. Butler, Julie A. Huber, Raphaël Soubeyran, Mary Heskel, Jonathan von Oppen

David Ho @davidho.bsky.social · Feb 5

The most iconic figure in the environmental sciences is the Keeling Curve, the CO₂ record from Mauna Loa, Hawaii.

@noaa.gov had a wonderful site where you could visualize and download these data, and now it's just gone. These data belong to us and we should not let this happen!

$A line graph showing atmospheric CO2 levels at Mauna Loa Observatory from 1955 to 2025. The y-axis represents CO2 mole fraction in parts per million (ppm), ranging from 320 to 420 ppm, while the x-axis is years.$

Mary Heskel @maryheskel.bsky.social · Dec 20

<3 Congrats!!

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