John L Field
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johnlfield.bsky.social
John L Field
@johnlfield.bsky.social
Researching bioenergy, soil carbon & land-based mitigation. NCA5 author, Colorado State U. Natural Resource Ecology Lab alum. he/him
Pinned
New in @globalchangebio.bsky.social- "Which Plant Traits Increase Soil C Sequestration? Empirical Evidence From a Long-Term Poplar Genetic Diversity Trial". We sampled soils & roots from 24 black cottonwood genotypes in a 13-y.o. Center for Bioenergy Innovation common garden.
doi.org/10.1111/gcb....
Which Plant Traits Increase Soil Carbon Sequestration? Empirical Evidence From a Long‐Term Poplar Genetic Diversity Trial
This study measured soil carbon concentrations and stocks in a 13-year-old poplar common garden study, exploring the degree to which soil carbon storage is affected by biological diversity or attribu...
doi.org
Reposted by John L Field
This is what democracy looks like. #NoKings
October 18, 2025 at 11:22 PM
#NoKings in Las Cruces NM
October 18, 2025 at 6:24 PM
Reposted by John L Field
I don’t know who needs to hear this but the CDC is being eviscerated right now. America is not going to have any kind of outbreak response capacity after tonight. Americans’ health data is no longer secure. Say goodbye to federal public health in any capacity. It’s a disaster. We won’t recover.
October 11, 2025 at 3:05 AM
Reposted by John L Field
We could get rid of half of the radiative forcing of climate caused by aviation if we could get airlines to stop making contrails, mostly by flying a few thousand feet higher or lower.

New open-access paper from a climate physics perspective.

agupubs.onlinelibrary.wiley.com/doi/10.1029/...
A Stylized Study of the Climate Response to Longwave and Shortwave Forcing at the Altitude of Aviation‐Induced Cirrus
For the same magnitude of LW and SW forcing at the altitude of aviation-induced cirrus, climate sensitivity is larger when the forcing is imposed at high latitudes For the same change in concentr...
agupubs.onlinelibrary.wiley.com
October 11, 2025 at 1:09 PM
Reposted by John L Field
📢📢📢 The application window is now open for YCNCC's Fall 2025 Postdoctoral Fellowship call. Details and application via the below link. We will start reviewing applications after 12/1. Please share widely!! naturalcarboncapture.yale.edu/opportunitie...
October 6, 2025 at 7:00 PM
Reposted by John L Field
Excellent, well-informed new podcast! Like a ship entering a storm, we’re now entering the overshoot - a world above 1.5 degrees C #globalwarming. This requires a whole new mindset,
explored by Laurie Laybourn.
Overshoot Episode 1: Uncharted Territory

If the world didn’t win, has it lost?

We meet the underdog diplomats who helped the world set the 1.5°C goal, and the champion sailors who can help us set a course for navigating what comes next

Listen to episode one now: open.spotify.com/episode/1bJl...
PART 1: Uncharted Territory
open.spotify.com
October 6, 2025 at 11:22 AM
Reposted by John L Field
Jane Goodall, ethologist and conservationist, has died. She was 91
October 1, 2025 at 6:02 PM
Reposted by John L Field
Reminder: two more days to apply for this opportunity!
Do you like acoustic data, community ecology, and desert oases? Apply for a PhD in my lab to investigate the role of ephemeral water sources (i.e., playa lakes and tinajas) in structuring desert bat (and maybe bird) communities. Visit lavertylab.org/join-the-lab for more. Applications due October 1
September 30, 2025 at 2:35 AM
Reposted by John L Field
Yessss new paper is OUT! Scott Ferrenberg led this effort to tease apart "nurse plant" effects in the Chihuahuan Desert.

Spoiler alert: don't underestimate the power of a little shade in arid systems

@scottferrenberg.bsky.social

rdcu.be/eH1O8
Quantifying potential abiotic drivers of the ‘nurse plant effect’ in two dominant shrub species of the northern Chihuahuan Desert
rdcu.be
September 24, 2025 at 6:47 PM
New paper out in Biofpr: "Environmental metrics of ethanol production improve with increased biomass yield and carbohydrate content in Populus trichocarpa"
scijournals.onlinelibrary.wiley.com/doi/10.1002/...
Environmental metrics of ethanol production improve with increased biomass yield and carbohydrate content in Populus trichocarpa
When selecting economically and environmentally advantageous genotypes for domestication in a biofuel supply chain, variability of cell-wall composition within a feedstock population and its impact o....
scijournals.onlinelibrary.wiley.com
September 19, 2025 at 6:33 PM
Reposted by John L Field
You still have 5 days to apply for this awesome postdoc opportunity in the Environmental Data Science Innovation & Impact Lab at the University of Colorado-Boulder! This could be your backyard!
September 10, 2025 at 8:44 PM
Reposted by John L Field
New in @globalchangebio.bsky.social- "Which Plant Traits Increase Soil C Sequestration? Empirical Evidence From a Long-Term Poplar Genetic Diversity Trial". We sampled soils & roots from 24 black cottonwood genotypes in a 13-y.o. Center for Bioenergy Innovation common garden.
doi.org/10.1111/gcb....
Which Plant Traits Increase Soil Carbon Sequestration? Empirical Evidence From a Long‐Term Poplar Genetic Diversity Trial
This study measured soil carbon concentrations and stocks in a 13-year-old poplar common garden study, exploring the degree to which soil carbon storage is affected by biological diversity or attribu...
doi.org
September 2, 2025 at 2:42 PM
Reposted by John L Field
The Department of Biology at Colorado State University is hiring an Assistant Professor in the area of plant-microbe interactions! Please spread the word!

jobs.colostate.edu/postings/165...
Assistant Professor Plant-Microbe Interactions
We seek a creative, collaborative, and visionary plant biologist to establish an internationally recognized research program at the forefront of plant-microbe interactions aimed at understanding how t...
jobs.colostate.edu
September 8, 2025 at 3:45 PM
Reposted by John L Field
Do you like acoustic data, community ecology, and desert oases? Apply for a PhD in my lab to investigate the role of ephemeral water sources (i.e., playa lakes and tinajas) in structuring desert bat (and maybe bird) communities. Visit lavertylab.org/join-the-lab for more. Applications due October 1
September 5, 2025 at 5:41 PM
Reposted by John L Field
Which Plant Traits Increase Soil Carbon Sequestration? Empirical Evidence From a Long‐Term Poplar Genetic Diversity Trial

🔗 buff.ly/Esj0c1H
@johnlfield.bsky.social
September 6, 2025 at 11:25 PM
New in @globalchangebio.bsky.social- "Which Plant Traits Increase Soil C Sequestration? Empirical Evidence From a Long-Term Poplar Genetic Diversity Trial". We sampled soils & roots from 24 black cottonwood genotypes in a 13-y.o. Center for Bioenergy Innovation common garden.
doi.org/10.1111/gcb....
Which Plant Traits Increase Soil Carbon Sequestration? Empirical Evidence From a Long‐Term Poplar Genetic Diversity Trial
This study measured soil carbon concentrations and stocks in a 13-year-old poplar common garden study, exploring the degree to which soil carbon storage is affected by biological diversity or attribu...
doi.org
September 2, 2025 at 2:42 PM
Reposted by John L Field
This will end the Hispanic-serving institution (HSI) program (schools with >25% Latino undergrads). For reference, current flagships that are HSIs include Arizona and Arizona State, 5 UCs (Irvine, Riverside, Merced, Santa Barbara, Santa Cruz), Rutgers, U New Mexico & NM State, UT Austin & UT El Paso
Trump Aims to End Millions in Grants to Colleges With High Hispanic Populations

By Danielle Douglas-Gabriel

Gift link! wapo.st/4oTVanO (Yes, WaPo will ask for an email address.)
August 23, 2025 at 5:32 PM
Reposted by John L Field
The 2025-26 Eco-Evo job list is out. Good luck to those applying!

docs.google.com/spreadsheets...
ecoevojobs.net 2025-26
docs.google.com
August 19, 2025 at 7:19 AM
Reposted by John L Field
Enjoying the cool weather in Baltimore this week for #ESA2025. Come hear about the long-distance movements of lesser long-nosed bats that my colleagues and I have been documenting this Thursday at 8:45am (COS 128 - Behavior: Migration and Movement 1). Please don't be afraid to say hi!
August 10, 2025 at 4:25 PM
Reposted by John L Field
Also if you're at #ESA2025 and interested in bats (maybe birds too), bioacoustics, arid landscapes, and thinking of a PhD, please say hello. I plan to recruit 1-2 grad students. Spring or fall 2026 start with a focus on desert waters or renewable energy. lavertylab.org

Happy to meet up!
The Laverty Lab
A conservation science and wildlife ecology lab at NMSU
lavertylab.org
August 10, 2025 at 4:44 PM
Reposted by John L Field
NASA is making plans to shut down two Earth observing satellites that provide key data to climate scientists and farmers, despite lawmakers telling them it’s illegal to do it. Story by @astrokimcartier.bsky.social

eos.org/research-and...
NASA Planning for Unauthorized Shutdown of Carbon Monitoring Satellites - Eos
Despite warnings that their actions are illegal, Duffy and other senior NASA officials have continued to secretly direct NASA employees to draw up plans to end at least two major satellites missions s...
eos.org
August 5, 2025 at 6:40 PM
Reposted by John L Field
The EPA cited my paper in their argument against the endangerment finding today. However, their point is completely backwards: my paper actually supports the EPA's 2009 range of 1.8C to 4C warming by 2100. www.nature.com/artic...
July 29, 2025 at 9:03 PM
Reposted by John L Field
Out today in Parasites & Vectors, Angelo Andrianiaina led a paper in which we described the seasonal diversity and effect of climate on ectoparasites on two species of Madagascar fruit bat, Eidolon dupreanum and Rousettus madagascariensis doi.org/10.1186/s130... 🧪🦇
Diversity and seasonality of ectoparasite burden on two species of Madagascar fruit bat, Eidolon dupreanum and Rousettus madagascariensis - Parasites & Vectors
Background Bats are important reservoir hosts for a variety of pathogens, some of which are transmitted by ectoparasite vectors including mites, fleas, lice, ticks, and bat flies (families Nycteribiid...
link.springer.com
July 29, 2025 at 12:04 AM
Reposted by John L Field
Hey US weather folks...this is a big deal. Go follow @nws.noaa.gov

cc @faineg.bsky.social
The NWS is doing a test run of using Bluesky.

www.weather.gov/media/notifi...
July 23, 2025 at 1:03 PM
Reposted by John L Field
Excited to share our new global estimate of nitrogen fixation out now in Nature! This work sets a new gold standard for understanding how much nitrogen is fixed in the terrestrial biosphere. Huge thanks so Carla Reis Ely for leading this incredible work! urldefense.proofpoint.com/v2/url?u=htt...
Global terrestrial nitrogen fixation and its modification by agriculture - Nature
Biological nitrogen fixation may impose stronger constraints on the carbon sink in natural terrestrial biomes and represent a larger source of agricultural nitrogen than is generally considered in ana...
urldefense.proofpoint.com
July 17, 2025 at 12:24 PM