In this study, we show that it's not a good idea to wash roots and immediately collect #root exudates: because of the washing-induced root damage, roots are losing a lot of C and exudate profiles are likely not accurate. (1/6)

sciencedirect.com/science/articl…
Letting the roots recover for a few days before collecting exudates gets rid of this artefact, and allows distinguishing between species and re-application of exudates for mechanistic experiments. (2/6)
Using this 'hybrid' root exudate collection method we were able to show that root traits explain root exudate quantity and quality. (3/6)

besjournals.onlinelibrary.wiley.com/doi/full/10.11…
Also, using this method, we showed that root exudates from plants that experienced drought trigger more soil respiration, potentially resulting in an ongoing loss of soil carbon after drought. (4/6)

nph.onlinelibrary.wiley.com/doi/full/10.11…
This is great work done by @angiestraathof @graefox @Howbeer @RoyGoodacre @Ecology_Holly Alex Williams and more, and there's more to come to really get to the bottom of the role of root exudation in ecosystem functioning, especially under #drought!

nph.onlinelibrary.wiley.com/doi/full/10.11…
(5/6)
And also, how we can use this understanding to make food production systems more #sustainable and resilient to #climate change. (6/6)

science.sciencemag.org/content/368/64…
👆thread on all our recent work on #root #exudates and their role in ecosystem functioning!
Funded by the @BBSRC 😊

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More from @frantecol

23 Aug
De capaciteit om toegevoegd #stikstof vast te houden is een belangrijke functie van ecosystemen: het zorgt voor minder verliezen door uitspoeling en denitrificatie.

In dit paper in @JEcology test ik welke eigenschappen #stikstofretentie bepalen. (1/x)

besjournals.onlinelibrary.wiley.com/doi/full/10.11…
Ik wilde specifiek weten of oude ecosystemen meer stikstof kunnen vasthouden dan jonge - dit zou dan komen door meer bodemorganische stof en schimmel-gedomineerde microbiële gemeenschappen in oude ecosystemen. (2/x)
Daarvoor gebruikte ik drie gletsjervoorvelden. Als een gletsjer smelt komt kale rots tevoorschijn, waarop vervolgens bodemvorming en plantengroei begint. Omdat we precies weten wanneer deze gletsjers waar waren, kennen we de leeftijd van de ecosysteempjes in het voorveld. (3/x)
Read 13 tweets
23 Aug
When I was still on holiday, my opus magnum on nitrogen retention came out @JEcology: besjournals.onlinelibrary.wiley.com/doi/full/10.11…

We sampled three glacier forelands to assess how ecosystem N retention is affected by succession, and to determine the plant and microbial controls on N retention. (1/x)
As glaciers melt, they expose barren parent material on which succession starts. Because we know exactly when the front of the glacier was where, we know the age of the ecosystems in front of the glacier. This is a great system to test fundamental ecological questions! (2/x)
You can read about the amazing field work and our main findings here: (3/x)
jecologyblog.com/2021/08/18/gla…
Read 10 tweets
20 Jun
Ik heb een stukje geschreven waarin ik het argument van Staf dat bodems de grootste bron van stikstof zijn weerleg.

Het is een vrij uitgebreid stuk geworden, dus hier de hoofdpunten 👇 (1/x)

foodlog.nl/artikel/sticht…
1. Ja, ecosystemen stapelen stikstof, maar de getallen die Staf noemt zijn ongeloofwaardig hoog. In het stuk vergelijk ik deze cijfers met die uit tientallen onderzoeken. (2/x)
2. Ja, ecosystemen maken stikstof vrij uit de bodem, maar het grootste deel van deze stikstof wordt meteen weer opgenomen. Natuurlijke ecosystemen zijn over het algemeen geen “bron” van stikstof. (3/x)
Read 10 tweets
8 Mar
Women in science, a thread in numbers 👇 (1/x)

This is a talk I gave for our MSc Earth Sciences students today

#InternationalWomensDay
I started by asking them if they regard or treat me differently than they do male teachers or professors. They said they didn't (2/x)
But they probably do! (3/x)
Read 23 tweets
6 Mar
Ja, ik heb Professor in mijn twitter naam. Wil je weten waarom? Lees dan dit stuk, en bekijk even de voorbeelden in het draadje 👇

#ImmodestWoman #IWD2021 #internationalevrouwendag

nature.com/articles/s4156…
Image
Read 5 tweets
27 Jan
I walked a total of 15k today in my various Zoom meetings, in-person meetings, and phone calls! Pretty grey and chilly though.
I can't recommend this enough. It's so easy: install Zoom on your phone, get a headset that is good for walking, and go! It's a real game-changer for my #mentalhealth and physical health.
I start with my video on, just to day hi, then turn it off and put my phone in my pocket. I also got a battery pack in case my phone battery runs out.
Read 4 tweets

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