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John D. Parker

@johndparker.bsky.social

500 followers 140 following 17 posts

scientist working on plant community response to diversity, global change, herbivory, and biological invasions. Not good at social media.

Videos

Biology 29%

Agriculture 21%

Posts Media Videos Starter Packs

Reposted by Julia Koricheva, John Parker

Florian Schnabel @mixedforests.bsky.social · 11d

🗞️New study in @globalchangebio.bsky.social 🗞️

🌳Diversity in resource use strategies promotes productivity across a global network of tree #diversity experiments?🌲

Read our new study led by Joel Jensen together with #TreeDivNet here:

onlinelibrary.wiley.com/doi/10.1111/...

Diversity in Resource Use Strategies Promotes Productivity in Young Planted Tree Species Mixtures

By analyzing data from over 83,000 trees in 21 experiments across five continents, we found that forests with more species were more productive and had more stable growth. Productivity was driven mai....

onlinelibrary.wiley.com

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Reposted by John Parker, United Nations

IPBES @ipbes.net · 13d

Forests play a vital role in food, livelihoods & biodiversity and hold an intrinsic value of their own!

Let’s protect and restore them for people & planet! 🌍🌱

📹 Watch this video by @fao.org

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Reposted by John Parker

Julia Koricheva @juliakoricheva.bsky.social · Sep 10

Our new #TreeDivNet paper led by Hernán Serrano-León is out in @globalchangebio.bsky.social! Using data from 9 forest diversity experiments across Europe, we showed that tree diversity effects on tree growth responses strengthened during consecutive drought years dx.doi.org/10.1111/gcb....

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Reposted by Marten Winter, John Parker

Universität Konstanz @uni-konstanz.de · Sep 8

Globally spreading naturalized alien plant species are often those that are also expanding within their native regions. This is shown by a cross-national study led by the #UniKonstanz:https://t1p.de/b67xa.de/b67xa" class="hover:underline text-blue-600 dark:text-sky-400" target="_blank" rel="noopener">https://t1p.de/b67xa

Reposted by John Parker

Martin A. Nuñez @martin-nunez.bsky.social · Aug 28

Many people ask how they can support me as a new author

The best way right now: buy the book on Amazon and PLEASE leave a review

Reviews help the algorithm make the book visible to more early-career researchers
To reach ECRs, I need your reviews🙂

figure saying for the results section of a paper, text is 1 star. tables are two starts and figures are the best, 5 starts

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Reposted by Julie L. Lockwood, John Parker, Stephen D. Murphy

Katharine Hayhoe @katharinehayhoe.com · Aug 19

Tree-planting is always good, right? Well, it turns out that a tree planted in the wrong place can actually have a negative impact on the climate. That’s why a research team with scientists from The Nature Conservancy developed maps to help with strategic reforestation for maximum benefit!

New maps help decision-makers factor albedo into tree-planting plans

Albedo can cause large reductions to the climate benefit of tree planting – but new science helps identify locations with greatest climate-cooling potential

www.nature.org

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Reposted by Ana S. L. Rodrigues, Ben Bond‐Lamberty, Pieter A. Zuidema , and 1 more Ana S. L. Rodrigues, Ben Bond‐Lamberty, Pieter A. Zuidema, John Parker

Julia Koricheva @juliakoricheva.bsky.social · Aug 11

Few weeks left to apply for a fully funded PhD studentship in my lab @rhulbiology.bsky.social as part of new EU project Trees4Adapt
🌲🌳 Fieldwork in forest diversity experiments in Finland www.sataforestdiversity.org
📆 Apply by Sept 8th, start date - Jan 2026
👉 www.findaphd.com/phds/project...
🍁🌍🧪

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Reposted by Belinda E. Medlyn, John Parker, Alain Paquette

Nature @nature.com · Mar 19

Nature research paper: Widespread slow growth of acquisitive tree species

https://go.nature.com/43Tc3GY

Widespread slow growth of acquisitive tree species - Nature

Under field conditions, acquisitive tree species generally grow slowly, whereas conservative species show generally higher realized growth, owing to their ability to tolerate unfavourable environmental conditions.

go.nature.com

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Reposted by John Parker

Oded Rechavi @odedrechavi.bsky.social · Apr 1

Who does that? We rented a train JUST for the conference, that will take the participants from Prague to the woods of Bohemia. There'll be talks ON THE TRAIN. In Prague we'll have 5 locations with different atmospheres.
#theconferencetoendallconferences Register now:
woodstock.img.cas.cz

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Reposted by John Parker

Nature @nature.com · Apr 14

Here’s why the US research system is uniquely valuable, and what stands to be lost

https://go.nature.com/42tSfrd

How the United States became a science superpower — and how quickly it could crumble

US global dominance in science was no accident, but a product of a far-seeing partnership between public and private sectors to boost innovation and economic growth.

go.nature.com

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Reposted by John Parker

bcastagneyrol.bsky.social @bcastagneyrol.bsky.social · Jul 22

Happy to share our last study on #forest résistance to #pest insects.
We show that mixed forests are equally résistant to both native and invasive pests, whatever their feeding habits. Preprint available 👇🏻 www.authorea.com/users/948030...

More diverse temperate forests are more resistant against non-native insect herbivores

In general, trees suffer less damage by insect herbivores when growing in forest mixtures than in tree monocultures. Yet, most current knowledge is based on responses of native herbivores to tree dive...

www.authorea.com

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Reposted by Julia Koricheva, John Parker

iDiv Biodiversity Research @idiv-research.bsky.social · Jul 9

🌳 Tree placement matters! A new study shows forests with diverse, non-clustered species boost biomass (+11%), nutrient cycling and decomposition.

🛠️ Line planting = sweet spot between ecology and management. 🔗 www.nature.com/articles/s41...

www.idiv.de/the-right-mi...

The right mix and planting pattern of trees enhance forest productivity and services

By modelling different planting design strategies and species mixtures, researchers offer insights for sustainable forest management, reforestation, and climate change mitigation in a new paper.

www.idiv.de

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Reposted by John Parker

Julia Koricheva @juliakoricheva.bsky.social · Jul 9

Our new OA paper with Juri Felix and @philstevenson.bsky.social is out in @ecol-evol.bsky.social! We explored the role of leaf traits in driving genotypic diversity-mediated associational effects in silver birch #TreeDivNet 🌳🍁🌍🧪https://onlinelibrary.wiley.com/doi/10.1002/ece3.71768

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Reposted by John Parker

Christina Hackmann @christina-hn.bsky.social · Jun 23

Excited to see the next chapter of my PhD published in #PlantBiology:
doi.org/10.1111/plb....
Another piece in the puzzle of tree-water relations and mixed-species forests!

@plantsciencedbg.bsky.social
@enricounigoe.bsky.social

#openaccess #isotopes 🍁

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John D. Parker @johndparker.bsky.social · Jun 20

Coyotes are fairly new to the US east coast. Here's a curious one exploring a mixture plot in the #BiodiversiTREE tree diversity experiment in Edgewater MD (taken by Cathy Fahey). Will be interesting to see how these top predators affect food webs. #treedivnet

Reposted by John Parker

American Scientist @americanscientist.org · Jun 19

Wide-ranging, curiosity-driven research has led to enormous theoretical and practical benefits over the decades, ranging from anti-obesity drugs to the internet.

“Why Are We Funding This?”

Long-standing myths about “silly science” have contributed to the reckless slashing of government-supported research.

www.americanscientist.org

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Reposted by John Parker

Stand Up for Science! @standupforscience.bsky.social · Jun 19

#Resistance tools from bsky.app/profile/whys... when asked “why are we funding this” from uncles & Senators alike.

www.americanscientist.org/article/%E2%...

Shoutout bsky.app/profile/amer... for keeping the lights on while we reclaim #Science from the privatizing dismantlers.

#StandUpForScience

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Reposted by John Parker

Anthony Ricciardi @ecoinvasions.bsky.social · Jun 19

There are myriad examples of prey naivete, enemy release, biotic resistance, mutualisms etc, that demonstrate the importance of evolutionary context in species interactions.

This is why species origins matter. #bioinvasions

DrZP @zarahpattison.bsky.social · Jun 19

Source: The Telegraph
search.app/W7ogq

How red squirrels are fighting back against their grey cousins

Resurgence in predatory pine martens has greater effect on grey squirrels, study finds

search.app

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Reposted by Julia Koricheva, John Parker

Alain Paquette @alainpaquette.bsky.social · Jun 12

📢 The @paqlab.bsky.social is recruiting a PhD (or MSc), and you don't want to miss that - best place ever to do you PhD! 😉 To work in IDENT, a network of experiments of the effects of diversity on forest functioning. Foreign student? It's gotten harder 😞 but we can help.
paqlab.uqam.ca

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Reposted by John Parker

Global Change Biology @globalchangebio.bsky.social · Jun 10

Native Plant Species Are More Resistant Than Invasive Aliens to Escalating Environmental Change Factors

🔗 buff.ly/Qp19wTu

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Reposted by John Parker

Florian Schnabel @mixedforests.bsky.social · Jun 4

Interested in biomass production in diverse planted #forests?🌳🌲

In our new study led by Georgios Skiaderesis, we analyzed the effects of species- and structural diversity on woody biomass production in the #Sardinilla experiment.

#TreeDivNet @uni-freiburg.de

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

Collection of tree discs for dendroecological analyses in the Sardinilla experiment. This is the 1st harvesting campaign in a planted tree diversity experiment. Now we are exited to share the results! Thx to amazing fieldworkers!!!

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Reposted by John Parker

ESA Journals @esajournals.bsky.social · Jun 2

And read Stastny et al.'s study: doi.org/10.1002/fee....

Regional adaptation of integrated pest management to control invasive forest insects

Globalization is increasing the threat of invasive forest insects to ecosystems. Control efforts against the same pest species progressively occur across distant jurisdictions as integrated pest mana...

doi.org

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John D. Parker @johndparker.bsky.social · Jun 2

led by Cathy Fahey, we used #metabolomics in the #BiodiversiTREE experiment to show that chemically mediated plant–enemy interactions promote positive biodiversity effects on young tree growth - Journal of Ecology #treedivnet besjournals.onlinelibrary.wiley.com/doi/10.1111/...

Chemically mediated plant–enemy interactions promote positive biodiversity effects on young tree growth

A large-scale tree diversity experiment reveals that early growth of trees is influenced by phytochemically mediated trophic interactions. Specifically, foliar chemical diversity is higher for trees ...

besjournals.onlinelibrary.wiley.com

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Reposted by Monica G. Turner, John Parker

Michael Battalio @battalio.com · May 31

The President's Budget request as released yesterday will gut scientific research. Why should you care?
1) Science is fundamentally a jobs program. Many 100,000s are employed to do science and work for you, the US taxpayer.

NSF, NASA and NIH budgets per year, inflation adjusted from 2000-2025 along with the proposed cuts. NSF includes research component only. Massive cuts across all sectors, well below support spanning 25 years.

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Reposted by Carl J. Percival, Richard Betts, Jay T. Lennon , and 4 more Carl J. Percival, Richard Betts, Jay T. Lennon, Mya Breitbart, John Parker, Jessica A. Gephart, Julie A. Huber

Joshua Weitz @joshuasweitz.bsky.social · May 31

How bad will it be? Catastrophic.

Proposed cuts to #NSF, #NIH, and #NASA will set the US R&D landscape back 25 yrs+, cause economic and job loss now, and undermine innovations to come.

But, this is the WH's *proposed* budget.

Speak up now before it is too late.

(inflation adjusted $-s below)

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Reposted by Anurag A. Agrawal, Julia Koricheva, John Parker

EvolDir @evoldir.bsky.social · May 29

Apply for a postdoctoral position in Plant Chemical Ecology at the Czech Academy of Science, focusing on phytochemical diversity and plant-insect interactions. Deadline: June 25, 2025. More info: https://www.volflab.com/ #postdoc

VOLF LAB

Laboratory of Evolutionary Ecology has a broad conceptual focus on trying to understand how extant diversity has been driven through ecological interactions over evolutionary time.

www.volflab.com

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Reposted by John Parker

Osbert Sun @osbertsun.bsky.social · May 24

NEW ARTICLE OUT @forestecosyst.bsky.social
📰Https://www.sciencedirect.com/science/article/pii/S2197562025000569

Allometric equations quantify accelerated growth and carbon fixation in trees of northeastern North America

A tree’s basal area (BA) and wood volume scale exponentially with tree diameter in species-specific patterns. Recent observed increases in tree growth…

www.sciencedirect.com

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John D. Parker @johndparker.bsky.social · May 16

"government-supported research from the NSF and other agencies has had a return on investment of 150% to 300% since 1950, meaning for every dollar U.S. taxpayers invested, they got back between $1.50 and $3"
theconversation.com/unprecedente...

Unprecedented cuts to the National Science Foundation endanger research that improves economic growth, national security and your life

The Trump administration has terminated hundreds of federal grants that support engineering, biology, geology, computer science, STEM education and much more.

theconversation.com

Reposted by John Parker

Zack Labe @zacklabe.com · Apr 21

GOOD NEWS - "Thank you to everyone who expressed their strong support for the Regional Climate Center program. Our funding has been restored by NOAA and the Department of Commerce." www.ncei.noaa.gov/regional/reg...

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Reposted by John Parker

Journal of Applied Ecology @jappliedecology.bsky.social · Apr 18

Non-native beetles are promoted in managed forests with low species richness of plants, compared to unmanaged forests 🪲

Across Europe, managed forests showed higher levels of beetle invasions facilitated by non-native plants 🌲🌏 🧪

🔗 doi.org/10.1111/1365...

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