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Mark Hodson

@markehodson

Soil scientist, earthworm ecologist, academic at University of York

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18.03.2024
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Latest posts by Mark Hodson @markehodson

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Great to hear "A life without worms" broadcast last week on BBC Radio4 with Alan Davies and Sandra Salazar D’eca from go-grow.org.uk/our-story/

What would happen if #earthworms disappeared? You can find out here www.bbc.co.uk/sounds/play/...

05.03.2026 20:22 πŸ‘ 2 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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Good to chat #earthworms and #flooding with Michael Berenbrink, Kristian Daly, Megan Klaar, Qiuyu Zhu and Ben Pile today as part of our #Leverhulme Trust funded project - Sink or Swim

04.03.2026 17:56 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Tonight's "Worm moon" - so called as it's the first moon of Spring and is supposed to mark the time when earthworms become active again after the colder winter months. The earthworms that we've been sampling obviously haven't read the script!

03.03.2026 19:56 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Earthworms and climate change: Earthworm energetic and population responses to drought frequency and duration at University of York on FindAPhD.com PhD Project - Earthworms and climate change: Earthworm energetic and population responses to drought frequency and duration at University of York, listed on FindAPhD.com

A final #NERC #funded #PhD project to advertise - this one asks the question: How will #earthworms survive as #droughts become increasingly common with a changing climate. Please DM me if interested and circulate to possible candidates. More info. www.findaphd.com/phds/project...

09.11.2025 17:42 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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Farming Futures: comparing regenerative and conventional practices on soil, chemical use, and ecosystems in a changing climate at UK Centre for Ecology and Hydrology - Lancaster on FindAPhD.com PhD Project - Farming Futures: comparing regenerative and conventional practices on soil, chemical use, and ecosystems in a changing climate at UK Centre for Ecology and Hydrology - Lancaster, listed ...

And another #NERC funded #PhD that I'm involved with - this one led out of @UK_CEH and Sam Harrison that involves comparing #regenerative agriculture and #conventional #farming. Details are here:
www.findaphd.com/phds/project...

04.11.2025 19:14 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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ACCE+ DLA Programme: Engineering underground ecosystems for sustainable legume production at University of Sheffield on FindAPhD.com PhD Project - ACCE+ DLA Programme: Engineering underground ecosystems for sustainable legume production at University of Sheffield, listed on FindAPhD.com

Another #PhD project, this one led by Ellie Harrison at Sheffield Uni focussing on #legumes, #rhizobia, horizontal gene transfer and, of course, #earthworms

www.findaphd.com/phds/project...

31.10.2025 11:32 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Is biochar production the answer to biosolid reuse? at University of York on FindAPhD.com PhD Project - Is biochar production the answer to biosolid reuse? at University of York, listed on FindAPhD.com

Does converting #biosolids to #biochar maintain their benefits as a #soil amendment whilst minimising any residual risk due to #contaminants? We are recruiting to a #NERC Ecosolutions #PhD. Please share and DM me for more information if interested. shorturl.at/ldwVW

31.10.2025 09:07 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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Great to see Xiao Xiao at University of York for graduation for her PhD yesterday. You can find her thesis papers on #earthworms #microplastics and #cadmium at
www.sciencedirect.com/science/arti...

and

www.sciencedirect.com/science/arti...

24.07.2025 11:36 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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Teach children in the UK how to help the planet! We would like the UK government to implement climate change and protecting the earth into all school curriculums to ensure that our generation are informed about the choices they make and the impact w...

Kids are growing up with climate change, but aren't learning about it in school! 🀯 Let's demand climate education for every UK child. Sign the petition: you.38degrees.org.uk/petitions/te...

21.07.2025 19:22 πŸ‘ 4 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Congrats to Zheng Fang on his latest PhD paper. This one shows that #microplastics can reduce the toxicity of salinity to #earthworms and that salinity is a more significant environmental challenge to earthworms than microplastics.

authors.elsevier.com/c/1lEy415DSl...

10.06.2025 20:11 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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Job Opportunity at University of Leeds: Research Fellow in Hydrological Modelling Are you an ambitious researcher looking for your next challenge? Do you have an established background in hydrology, hydraulics and climate modelling? Do you want to work in a trans-disciplinary resea...

#postdoc #job opportunity for a #hydrological #modeller working with Dr Megan Klaar, River Basin Processes and Management research group at University of Leeds as part of our #earthworms and #flooding @leverhulme.ac.uk funded project.

Job details are at:
jobs.leeds.ac.uk/Vacancy.aspx...

15.04.2025 11:14 πŸ‘ 2 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0
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Celebratory post-viva beers celebrating with James MacDonald of Queen Mary together with internal Andrew Leitch and supervisors @anneropiquet.bsky.social and Huw Jones. James' biogeochemical adventure continues next month when he starts at Bristol working with Penny Johnes

15.03.2025 12:55 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Jobs - The University of York

#job for a Technician in the Biology dept at the University of York and working with myself at @uoyenvironment.bsky.social on projects to improve nutrient retention, water retention, and carbon sequestration in soils: gathering and analysing data. Apply by 30/3/2025.
jobs.york.ac.uk/vacancy/tech...

07.03.2025 10:22 πŸ‘ 2 πŸ” 5 πŸ’¬ 0 πŸ“Œ 0
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Enhanced plant growth in the presence of earthworms correlates with changes in soil microbiota but not nutrient availability Earthworms enhance plant growth but the precise mechanism by which this occurs is not known. An understanding of the mechanism could potentially suppo…

Latest NERC rejection in. Any thoughts on who might fund research into mechanisms by which #earthworms boost #plant growth as a follow up to this study www.sciencedirect.com/science/arti... and as a means to identify methods to try and reduce fertiliser inputs welcome!

28.01.2025 14:45 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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A good days sampling on the River Swale floodplain with #EcoWild PGR Mahmuda Islam

21.01.2025 20:08 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Cool PhD project combatting soil erosion in Ethiopia with indigenous agricultural plants. Funded by @ukri.org QUARTILES DLA and complementary to a couple new projects with Ethiopian scientists funded by REDAA and GCBC so you will be surrounded by a team.

www.findaphd.com/phds/project...

17.01.2025 15:38 πŸ‘ 6 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0

I do think the answer is to reject papers from people who don't / won't review. But then you'd have to guard against token reviews that aren't useful but are done to meet quotas. That being said some of the reviews I've received of late....

16.01.2025 16:03 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

So just turn down their papers?

16.01.2025 16:01 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Biodegradable microplastics adsorb more Cd than conventional microplastic and biofilms enhance their adsorption Biodegradable polylactic acid (PLA) mulch has been developed to replace conventional polyethylene (PE) mulch in agriculture to reduce plastic pollutio…

First paper of the year out today - 2nd paper from Xiao Xiao's PhD. We show that natural weathering of #microplastics increases potential sorption of Cd to them, that #biofilm development is important in this and that PLA (a biodegradable plastic) is more sorptive than PE.

08.01.2025 11:49 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Job Specification

Job Alert - a 1 year PDRA position as part of our LeverhulmeTrust funded #earthworm project "Sink or Swim" is available working with Dr Michael Berenbrink, University of Liverpool investigating haemoglobin levels in earthworms. Closing date-31st Jan 2025

my.corehr.com/pls/ulivrecr...

07.01.2025 20:40 πŸ‘ 0 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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Still not quite ready for the holidays to end!

05.01.2025 22:37 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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a cartoon of a bunny jumping out of a party hat ALT: a cartoon of a bunny jumping out of a party hat

Congrats to Sammani Ramanayaka of Lancaster Environment Centre for successfully defending her thesis on impacts of #microplastics and plasticisers on soil microbia with myself and @john-quinton.bsky.social examining. In all the excitement I forgot to take a photo so here's a party popper instead!

13.12.2024 17:20 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
On-farm trials at Strategic Cereal Farm North (2022–2028) | AHDB This page features core information about the on-farm research.

Hi Kathy, not much written up yet as the trial is ongoing. You can read more generally about the work that AHDB is doing at the farm here.

ahdb.org.uk/on-farm-tria...

12.12.2024 17:34 πŸ‘ 1 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0
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Couldn't make it to #BES2024 but we had a busy day using all eight hours of daylight (and a final sample supplemented by torch light) sampling with Ben at Church Farm
AHDB / ADAS legume and compost trials to try and boost #earthworm populations. Here's Ben with an earthworm for scale.

11.12.2024 22:33 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Off sampling tomorrow for #earthworms in water logged soils as part of our @LeverhulmeTrust funded earthworms and #flooding project. Mustard tin for scale?

10.12.2024 10:28 πŸ‘ 5 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

too wet at the moment to go and survey again but I'd assume that would be the case as well.

26.11.2024 22:07 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Lake Tadcaster now back - will be interesting to re-survey the #earthworms once the #flooding recedes as part of our @LeverhulmeTrust project on #earthworms, #flooding and #climate change.

26.11.2024 14:35 πŸ‘ 4 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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If it gets too dry do earthworms die? Earthworm energetic and population responses to drought frequency and duration at University of York on FindAPhD.com PhD Project - If it gets too dry do earthworms die? Earthworm energetic and population responses to drought frequency and duration at University of York, listed on FindAPhD.com

Please share with potentially interested students-I am advertising a #PhD studying #earthworms and #drought. Full advert here: www.findaphd.com/phds/project...
There is a webinar at 1400 UK time on Tues 3rd Dec. for interested applicants. Register via this form
docs.google.com/forms/d/e/1F...

26.11.2024 11:15 πŸ‘ 4 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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Congrats to Jianting Feng from @LeedsUniCivil for a good defence on his thesis on metal speciation in sewage sludge on Wednesday. Really enjoyable viva with Jianting and Miller Camargo-Valero. Thesis papers already available link.springer.com/article/10.1...
link.springer.com/article/10.1...

22.11.2024 12:11 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Always happy to collaborate on that sort of thing - easier on the back, harder on the pocket!

09.11.2024 16:10 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0