Save NCAR from being dismantled today! The Trump Administration has vowed to dissolve the center that provides critical extreme weather and climate data for our nation.

The Trump Administration's plan to dismantle the @ncar-ucar.bsky.social is senseless & dangerous.

It would weaken weather forecasting, climate research, & the science that keeps people safe.

We urge that this plan be abandoned.

Call Congress to #SaveNCAR today. buff.ly/7ka1BQA

NCAR’s Mesa Lab is literally a science castle dedicated to understanding our planet in an open and collaborative way, and leading the world in that effort. We cannot let this happen.

At #AGU25? Let’s link up and chat!

My poster is this afternoon (see photo).

Tomorrow are sessions I helped organize: Quantifying rates and coupling of biogeochemical cycles in terrestrial ecosystems (oral 10:30-12:00; poster 14:15-17:45)

Repeatable, continuous and real‐time estimates of coupled nitrogenase activity and carbon exchange at the whole‐plant scale Symbiotic nitrogen fixation (SNF) by higher plants and their bacterial symbionts is a globally important input of nitrogen. Our understanding of the mechanisms that control SNF and the time-scales...

We applied a novel method that we previously developed to measure N fixation in individual plants over the course of several weeks after inducing a drastic change in soil N supply. This method makes non-destructive measurements at the whole-symbiosis scale. doi.org/10.1111/2041...

Time lags in up-regulation varied by symbiotic type, with N fixation starting earlier in rhizobia symbioses but increasing faster once it started in actinorhizal symbioses.

Time lags in down-regulation varied by growing temperature and biome of origin.

Time lags are possibly long enough to hinder the competitive benefit of facultative N fixation and clearly long enough to cause high losses of plant-available N from forests with a relatively high abundance of N-fixing trees.

Time lags in the regulation of symbiotic nitrogen fixation Theory has shown that time lags in the regulation of symbiotic nitrogen (N) fixation (SNF) can be important to the competitive dynamics and ecosystem consequences of N-fixing trees, but measurements...

New paper out in @newphyt.bsky.social! We quantified the time lags in the regulation of symbiotic #nitrogen fixation. With Kevin Griffin and Duncan Menge. doi.org/10.1111/nph....