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Christopher Dick

@chrisdick.bsky.social
493 followers 171 following 52 posts

Prof of Ecology and Evolutionary Biology at University of Michigan, plant curator at MICH, Director of E.S. George Reserve, research on trees, tropical forests; from the Allegheny Front in Pennsylvania

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Reposted by Christopher Dick
Rebekah Rogers @evolscientist.bsky.social · 16/09/2026
USDA approves blight resistant chestnut trees. www.newyorkupstate.com/outdoors/202...
newyorkupstate.com
USDA approves genetically modified American chestnut tree developed at SUNY ESF
Decision marks first time a genetically modified tree designed for forest restoration clears regulatory hurdle.
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Carl Zimmer @carlzimmer.com · 01/09/2026
UNC-Chapel Hill, Duke to combine herbaria, creating the third-largest university plant collection in the United States ncbg.unc.edu/2026/08/31/u...
ncbg.unc.edu
UNC-Chapel Hill, Duke to combine herbaria, creating the third-largest university plant collection in the United States - North Carolina Botanical Garden
The combined herbaria will create an unmatched archive for studying plant diversity in the southeastern United States (Chapel Hill, N.C.— Aug. 31, 2026) UNC-Chapel Hill and Duke University will unite....
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Christopher Dick @chrisdick.bsky.social · 31/08/2026
Phil Fearnside studied with John Vandermeer and Dan Janzen at #UMich for his 1978 PhD — all three are still very active #UMichEEB
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Christopher Dick @chrisdick.bsky.social · 27/08/2026
excellent post by Rebecca Arends on Ann Arbor's deer and the need to minimally monitor population size and impacts #A2council
rebeccaforannarbor.com
Ann Arbor Should Start Measuring Deer Impacts Again
For several years, Ann Arbor has effectively had no active deer-management program.
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Rhett Ayers Butler @rhettayersbutler.bsky.social · 24/08/2026
Dan Janzen is one of the most influential tropical ecologists of his generation. But there's more to his story than a solitary scientist working a remote Costa Rican dry forest. news.mongabay.com/2026/08/dani...
news.mongabay.com
Daniel Janzen and the long work of bringing back a forest
In northwestern Costa Rica, the forest did not return all at once. First the cattle were removed. Then the fires had to be stopped. Introduced grasses made the old ranchlands burn too easily. Fence li...
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Christopher Dick @chrisdick.bsky.social · 30/07/2026
Any forest ecology types out there have experience with "Swedish Tree Grippers"? Seriously considering acquiring some for canopy work but they are costly.
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Gina Baucom @gbaucom.bsky.social · 06/07/2026
A giant in plant biology. Truly grateful for his research and influence.
obituaries.nationalcremation.com
James Hamrick Obituary - Marietta, GA
Celebrate the life of James Hamrick, leave a kind word or memory and get funeral service information care of National Cremation Services - Atlanta.
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Christopher Dick @chrisdick.bsky.social · 12/06/2026
My favorite photo of #MICH and #UMichEEB grad student @dmedellinz.bsky.social She's holding a leaf from a Colombian species of Gustavia (Lecythidaceae). lsa.umich.edu/herbarium/ne...
lsa.umich.edu
Herbarium Spotlight: Tracing the Evolutionary Journey of the Brazil Nut Family | U-M LSA University of Michigan Herbarium
A recent paper by U-M researchers uncovers how these iconic tropical trees spread across South America, diversified through time, and adapted to new environments and elevations.
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The Morton Arboretum @mortonarboretum.bsky.social · 05/05/2026
A landmark study following 15+ years of collaboration by researchers at the Arboretum, @duke-university.bsky.social, @harvard.edu, and partners in Mexico published this week on @pnas.org. It reveals what made the mountains of Mexico and Central America a hotspot for oak biodiversity: arb.eco/4tVWclh
A tree with a broad canopy of green leaves stretches out over a rocky slope under a clear blue sky. In the background, there are rolling hills covered with dense vegetation.
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Rebekah Modrak @rebekahmodrak.bsky.social · 03/05/2026
Open letter for UMich profs + students to protest President Grasso's cowardly reproach of Dr. Peterson's Spring Commencement speech acknowledging those—women, Jewish students, Black students, pro-Palestinian student activists—who "refused to accept the enclosures and orthodoxies of their time."
docs.google.com
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ForestPlots @forestplots.bsky.social · 24/04/2026
El levantamiento andino y la biogeografía histórica de la familia de la nuez de Brasil. Lecythidaceae se diversificó durante el Mioceno. La mayoría de especies conservaron nichos en la selva de tierras bajas, pero varios linajes se desplazaron hacia los andes. onlinelibrary.wiley.com/doi/10.1111/...
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Thais Vasconcelos @tvasconcelos.bsky.social · 16/04/2026
Postdoc opportunity in plant systematics + phylogenomics 🌿 my lab at the University of Michigan is recruiting for a Research Fellow working on species delimitation in neotropical myrtles. Full details + apply here (deadline April 30) careers.umich.edu/job_detail/2...
careers.umich.edu
Research Fellow - Vasconcelos Lab | U-M Careers
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Christopher Dick @chrisdick.bsky.social · 15/04/2026
Great new paper on the biogeography of the Brazil nut family #Lecythidaceae led by #UMichEEB PhD student Diana Medellín-Zabala. onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
Assembling the Neotropical Tree Flora: Andean Uplift and the Historical Biogeography of the Brazil Nut Family (Lecythidaceae)
Aim The assembly of tropical tree floras is complex, involving many lineage-specific histories; however, focusing on the biogeographic history of diverse clades can reveal general patterns. We inves...
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Katrin Heer @katrinheer.bsky.social · 19/02/2026
Postdoctoral position in Forest Genetics at @uni-freiburg.de with a focus on local adaptation and/or stress reaction of trees. The position combines research and teaching (4 SWS), and offers the opportunity to develop an independent research profile (4+ years).
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Christopher Dick @chrisdick.bsky.social · 22/01/2026
Looking forward to @andrewlhipp.bsky.social Andrew Hipp's Friday talk on "the nature of oak species" at the UM Herbarium. It's open to the public lsa.umich.edu/herbarium/ne...
lsa.umich.edu
All Events | U-M LSA University of Michigan Herbarium
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Christopher Dick @chrisdick.bsky.social · 18/01/2026
Just got a #blinkcamera clip of #bobcats in a territorial standoff at my cottage. Worth listening to the audio. #AlleghenyFront #Pennsylvania
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Lee Dyer @gusanero.bsky.social · 15/01/2026
This is a nice (but grim) summary of the Chambers et al. paper that I was fortunate to work on.... Predicting the fate of tropical forests under intensifying heat www.nature.com/articles/d41...
nature.com
Predicting the fate of tropical forests under intensifying heat
Intense droughts have caused water stress and elevated mortality for trees in the Amazon, foreshadowing the future of tropical forests as the climate changes.
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Christopher Dick @chrisdick.bsky.social · 07/11/2025
Thursday lab at the Mud Lake bog -- an exciting finale for a semester of field botany and marking the 60th anniversary of the "Woody Plants" class at @UMich @UMSEAS and #UMichEEB
students in hip waders on a quaking bog
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Lizzie Wade @lizziewade.bsky.social · 02/11/2025
My little blog is growing up 🥹 It's now The Antiquarian, a weekly newsletter exploring what we know about the past, how we learn it, and why it matters. theantiquarian.email/archive/welc...
theantiquarian.email
Welcome to The Antiquarian
Because the past matters more than ever
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Christopher Dick @chrisdick.bsky.social · 30/10/2025
Pleased to be hosting my earliest mentor in tropical field botany Michael Nee who will be speaking at the #MICH Herbarium tomorrow (Halloween, Friday, noon-1, Oct 31) on the "Origin of Pumpkins and Squashes". Members of the public are welcome
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ForestPlots @forestplots.bsky.social · 28/10/2025
Many congratulations to Adriane Esquivel, Rebecca Morgan and to all our colleagues supporting Amazon forest monitoring with RAINFOR and ForestPlots.net! Our analysis of 30 years of Amazon forest change is highlighted on the cover of @natplants.nature.com. www.nature.com/articles/s41...
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Matt Friedman @friedmanlab.bsky.social · 18/10/2025
Great pair of articles in this morning's Ann Arbor News highlighting the outstanding new leadership of the U-M Museum of Zoology and U-M Herbarium: Alison Davis Rabosky (left) and Thais Vasconcelos (right). 🍄🌿🌺🐚🪲🐟🐸🐍🐦🐿️
Alison Davis Rabosky, Director of the University of Michigan Museum of Zoology, poses in the museum’s Herpetology archives at the University of Michigan’s Research Museums Center.Thais Vasconcelos, Director of the University of Michigan Herbarium, poses at the University of Michigan’s Research Museums Center.
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Brian J. Enquist @bjenquist.bsky.social · 15/10/2025
Amazonian hyperdominance exceeds expectations of neutral theory 🧪🌐🌾 besjournals.onlinelibrary.wiley.com/doi/abs/10.1...
besjournals.onlinelibrary.wiley.com
Amazonian hyperdominance exceeds expectations of neutral theory
Our work demonstrates Amazon-wide hyperdominance necessitating deterministic explanation by first comparing data to the global dispersal neutral model, then establishing this to be a conservative tes....
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Stephen A. Smith @blackrim.bsky.social · 15/10/2025
fun paper with a lot of great folks @tomacarruthers.bsky.social @willweaver.bsky.social @phylieu.bsky.social @jamesbpease.bsky.social @gbradburd.bsky.social and more nph.onlinelibrary.wiley.com/doi/10.1111/...
nph.onlinelibrary.wiley.com
Longevity in plants impacts phylogenetic and population dynamics
Phylogenies of long-lived plants often exhibit short molecular branch lengths and high levels of gene-tree conflict. However, the biological mechanisms underlying these patterns remain unclear. We e.....
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Christopher Dick @chrisdick.bsky.social · 14/10/2025
We are hiring a full time plant mounter to join our U-M herbarium team. The person will mount specimens from around the world and train students in the plant mounting process. Cool botanical job! careers.umich.edu/job_detail/2...
careers.umich.edu
PLANT MOUNTER II | U-M Careers
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Christopher Dick @chrisdick.bsky.social · 11/10/2025
Michigan's #UMMZ Reptiles and Amphibians Collections Manager position is now open. Join a great museums group and help manage the world's second largest herpetology research collection. Please share! careers.umich.edu/job_detail/2...
careers.umich.edu
Res Museum Collection Manager | U-M Careers
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Justin Wolfers @justinwolfers.bsky.social · 20/09/2025
Critical part of the President's new $100,000 charge for H1-B visas: The Administration can also offer a $100,000 discount to any person, company, or industry that it wants. Replacing rules with arbitrary discretion. Want visas? You know who to call and who to flatter.
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Jonathan Myers @jamyersecology.bsky.social · 19/09/2025
Happy to share this commentary on our new paper in @pnas.org, led by William Farhan-Rios, exploring responses of tropical tree communities to climate warming from the Amazon to Andes Mountains 🌴 ⛰️ 🌐 An uphill struggle for tropical forest trees | PNAS www.pnas.org/doi/10.1073/...
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tomomi parins-fukuchi @tomopfuku.bsky.social · 05/09/2025
Excited to share a new paper! "Sorting of ancestral polymorphism and its impact on morphological phylogenetics and macroevolution". Part of some work I've been doing on modelling the evolution of polymorphic traits in fossil echinoderms. academic.oup.com/evolut/advan...
academic.oup.com
Sorting of ancestral polymorphism and its impact on morphological phylogenetics and macroevolution
Abstract. Intraspecific phenotypic variation provides the basic substrate upon which the evolutionary processes that give rise to morphological innovation,
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Emily Josephs @emjo.bsky.social · 21/08/2025
MSU Plant Bio is hiring a new herbarium director! Our herbarium is a wonderful resource on campus and I'm excited to have the opportunity to make it even better by bringing in a new director. Details here: plantbiology.natsci.msu.edu/job-postings...
plantbiology.natsci.msu.edu
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John Fowler (he/him) @jefowlerjr.bsky.social · 09/07/2025
Come join us in Corvallis! Great colleagues, a wonderful location for plant science of all types, with the added benefit of the beautiful surroundings of Oregon!
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Christopher Dick @chrisdick.bsky.social · 09/07/2025
Following the fantastic #ATBC2025 meeting in Oaxaca I visited the Tree of Tule, a Montezuma cypress (Taxodium mucronatum) with the world's stoutest trunk. It's highly buttressed but even after smoothing it is thicker than the largest sequoia with a smoothed diameter of 30.8 feet. #bigtrees
cypress tree with 30 foot diameter trunk
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Christopher Dick @chrisdick.bsky.social · 09/07/2025
Herbarium director position opening at Oregon State University ‪@osu-herbarium.bsky.social‬ Great opportunity for herbarium- and field-trained botanists at any rank. bpp.oregonstate.edu/bpp/about/op...
bpp.oregonstate.edu
Open Positions
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Kali Middleby @kalimiddleby.bsky.social · 26/06/2025
Heading to Oaxaca for #ATBC2025 ? Make sure you stop by our symposium for all things leaf temperature, heat tolerance, and tradeoffs across climate gradients 🌿💧🌡️
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Kelly Andersen @kmander7.bsky.social · 27/06/2025
#NExTropics symposia at #ATBC2025 find out the latest from nutrient addition experiments from across the tropics
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Pierre-Michel Forget @pmforget.bsky.social · 29/06/2025
#ATBC2025 started. More than 1000 participants are in the room.
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Christopher Dick @chrisdick.bsky.social · 29/06/2025
I'll be talking about hyperdominant tropical tree species at #ATBC2025 in #Oaxaca, including some recent work on Eschweilera coriacea, which despite being possibly the most common tropical tree in the world (~5 billion trees in the Amazon basin) can be hard to identify and is poorly studied.
picture of tagged tree of Eschweilera coriacea
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Jeannie Leverich @jeanniel.bsky.social · 01/06/2025
To Whomever vandalized the Peony Garden at the Nichols Arboretum at the University of Michigan in Ann Arbor last night: There is so little beauty in our world right now. You are making the world a more cruel and ugly place. You are not helping. www.instagram.com/reel/DKXFSz5...
instagram.com
Login • Instagram
Welcome back to Instagram. Sign in to check out what your friends, family & interests have been capturing & sharing around the world.
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Jacquelyn Gill @jacquelyngill.bsky.social · 09/05/2025
This is an absolute disaster. If we don't stop this, they will turn NSF into a pawn of the Trump administration. There will be no research on climate, biodiversity, or anything that isn't eugenics or AI or how to more efficiently destroy the planet for profit. This cannot be allowed to happen.
science.org
Exclusive: NSF faces radical shake-up as officials abolish its 37 divisions
Changes seen as a response to presidential directives on what research to fund
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Armando Rosario-Lebrón @rosariolebronentomology.com · 08/05/2025
The legendary USGS Bee Lab is being shut down. The 2026 budget proposal defunds the Ecosystem Mission Area, which supported the lab. If their science helped your work, there’s still time to make your voice heard. Read below. (1/4) 🧪 #pollinators #Pollinators #USGS #Entomology #Hymenoptera 🪲🪳
usgs.gov
USGS Bee Lab at the Eastern Ecological Science Center
The USGS Bee Lab supports research on native bees. As part of that program we and our co-located USFWS partners develop identification tools and keys for native bee species, take public access hi reso...
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Christopher Dick @chrisdick.bsky.social · 07/05/2025
I continue to be awed by the Blanding's turtles at the ES George reserve #ESGR. A U-M grad student first tagged them in 1953. At 95 years old, our oldest marked female shows no sign of aging and reproduces with as much vigor as a 20 yr old! lsa.umich.edu/herbarium/ne...
lsa.umich.edu
The World's Oldest Known Freshwater Turtle Turns 95 | U-M LSA University of Michigan Herbarium
A female Blanding’s turtle, it sets a new record with each year of life. And this turtle doesn’t appear to be slowing down. In fact, she is still producing eggs, and shows no signs of declining with a...
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Christopher Dick @chrisdick.bsky.social · 07/05/2025
Spring newsletter from the U-M Museum of Zoology #UMMZ and Herbarium #MICH (EEB museums) with a story from the ES George Reserve #ESGR on our elderly Blanding's turtles lsa.umich.edu/eeb/alumni-f...
lsa.umich.edu
EEB Museums Newsletters | U-M LSA Ecology and Evolutionary Biology (EEB)
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Rowan J. Schley @rschley.bsky.social · 05/05/2025
🌳⚠️Out now in Systematic Biology⚠️🌳 We find rampant reticulation in Inga, the blindingly rapid Amazonian tree radiation! ⚡ BONUS: We also find introgression and selection on genes underlying chemical defences, helping Ingas resist relentless insect herbivory 🐛☠️🌳 academic.oup.com/sysbio/advan...
academic.oup.com
Rampant Reticulation in a Rapid Radiation of Tropical Trees -Insights from Inga (Fabaceae)
Abstract. Evolutionary radiations underlie much of the species diversity of life on Earth, particularly within the world’s most species-rich tree flora – t
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Dennis B. Hooper @dennisbhooper.bsky.social · 27/04/2025
Fully on board with dems running for office promising to reinstate fired federal employees and jail this administration’s various criminals, but let’s go ahead and add “we will seize by eminent domain any national parkland sold to developers”
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Myriam Heuertz @mheuertz.bsky.social · 17/04/2025
The tropical timber tree angelique, Dicorynia guianensis, is locally adapted to the east-west rainfall gradient in French Guiana! Congrats to Julien Bonnier for publishing this PhD chapter in Molecular Ecology! doi.org/10.1111/mec....
doi.org
Wet Season Environments Drive Local Adaptation in the Timber Tree Dicorynia guianensis in French Guiana
The vast tropical rainforests of the Guiana Shield in Northern South America play a vital role in maintaining the region's ecological balance and economy. Increasing pressure from selective logging, ...
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taenia @taenia.bsky.social · 06/04/2025
To do: 1. Sleep 2. Eat 3. Scream at marsh 4. Repeat
A male Red-winged Blackbird perched on dry reeds and calling. His posture is hunched and his feathers are fluffed up.

This is a black bird with a thin, black bill and dark eyes. He has a large patch of bright red feathers on his shoulder, bordered by bright yellow.
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Richard Conniff @richardconniff.bsky.social · 07/04/2025
Measles is our most infectious disease, can pass to others even 2 hours after a victim passes through a room, and kills 1 to 3 people per 1000--mostly young, unvaccinated children. Please get your children vaccinated.
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Miriam Posner @miriamposner.com · 06/04/2025
In light of the recent visa withdrawals, here is a PDF with advice for international students at UCLA. I’m so sorry to have to share this. drive.google.com/file/d/1x8_z...
GOING ABOUT DAILY LIFE: The buddy system and knowing your rights
1. In every moment you can, be with a buddy. If you do not have a roommate, consider staying with someone. During the day, walk with a buddy when leaving your room.
2. Consider emailing professors to request remote/hybrid or other accommodations.
They are allowed to do so under Academic Senate rules.
3. If ICE comes to your door, do not open the door. You do not have to open your door, and you do not have to speak with them. Do not say anything. If you are alone, call someone to help you stay calm and stay silent. If they force their way in, do not resist, instead say "I do not consent to your entry."
4. You have the right to ask to see a judicially signed warrant. Unless ICE/DHS has a judicially signed warrant to search or arrest, one can refuse ICE entry. This judicial warrant must be signed by a judge; it is different from an administrative warrant which ICE often presents/has when making immigration-related arrests.
5. If you are detained, don't say anything to ICE. Don't sign anything.
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Rowan J. Schley @rschley.bsky.social · 01/04/2025
Check out our new paper led by the amazing @benkuhnhaeuser.bsky.social in @science.org, exploring how the extraordinary diversity of Asian rattan palms was assembled 🌴
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ForestPlots @forestplots.bsky.social · 31/03/2025
INPA procura candidato(a) para pós-doutorado no Projeto “Integrando a hidrologia do solo e características hidráulicas para entender os riscos de mortalidade às secas das árvores gigantes” com o projeto “GIGANTE” (www.caryinstitute.org/science/rese...). @treeco-db.bsky.social @evangora.bsky.social
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