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John L Field

@johnlfield.bsky.social

207 followers 397 following 14 posts

Researching bioenergy, soil carbon & land-based mitigation. NCA5 author, Colorado State U. Natural Resource Ecology Lab alum. he/him

Posts Replies Media

John L Field @johnlfield.bsky.social · 28/03/2026

#NoKings in Las Cruces NM

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John L Field @johnlfield.bsky.social · 25/03/2026

... measurements, including the full excavation of tree root balls for comprehensive estimation of belowground biomass and soil carbon 😍 It was fun to collaborate and help get this study revived and finalized!

Figure showing comparative changes in cottonwood biomass allocation among stem, limbs, leaves and roots over time between the control—no irrigation and low fertilizer inputs, and the high irrigation and high fertilization treatment.

Figure showing average percent soil carbon to a depth of 150 cm in 25 cm increments for 4-year-old (a) cottonwood fertilized, (b) cottonwood unfertilized, (c) sycamore fertilized, (d) sycamore unfertilized, (e) sweetgum fertilized, (f) sweetgum unfertilized, (g) based on Natural Resources Conservation Service soil survey data (https://websoilsurvey.nrcs.usda.gov/app/), and (h) in the adjacent agricultural field. Values are followed by the 95% confidence interval.

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John L Field @johnlfield.bsky.social · 18/10/2025

#NoKings in Las Cruces NM

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John L Field @johnlfield.bsky.social · 19/09/2025

High-level conclusion: the environmental footprint of poplar-derived cellulosic ethanol production is much more sensitive to poplar yield than it is to poplar biomass quality (sugar content). Similar what we concluded previously for switchgrass— doi.org/10.1021/acss...

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John L Field @johnlfield.bsky.social · 02/09/2025

Biologically diverse long-term common gardens can provide unique insights into plant controls on biogeochemical cycling, even if they weren't originally designed for it. We're now sampling 300+ other genotypes at this site, to try to resolve the controls and mechanisms affecting soil C & N cycling.

A researcher from the Center of Bioenergy Innovation sampling roots in between rows of tall black cottonwood trees at a common garden site near Clatskanie, Oregon.

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John L Field @johnlfield.bsky.social · 14/06/2025

Lots of folks out for the #nokings protest in Portland OR today

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John L Field @johnlfield.bsky.social · 25/11/2024

Initiated a new collaboration with professor @theresalaverty.bsky.social last week! Thankfully the weather cooperated (mostly) for an outdoor ceremony and some R&R in northern New Mexico.

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