Reposted by Theresa CrimminsBrian J. Enquist @bjenquist.bsky.social · 28/09/2026Please pass along: I’m recruiting PhD students to join our Macroecology Lab. We study physical ecology, macroecology, and biodiversity — spanning scaling, trait-based ecology, theory, comparative biology & ecoinformatics. Several avenues for funding. Please reach out if interested 🧪🌐🌾 294130
Theresa Crimmins @theresacrimmins.bsky.social · 08/07/2026Blueberries are a valuable indicator of climate change response! youtube.com/shorts/fULms... #phenology @usa-npn.bsky.social @npr.org @wbur.orgyoutube.comWhat one Mass. blueberry bush tells scientists about climate changeYouTube video by WBUR 0112
Theresa Crimmins @theresacrimmins.bsky.social · 25/06/2026We had a very early start to spring in the West this year, it sustained, and now we can see that the "end" of spring was reached early to very early across pretty much all L48 states #statusofspring www.usanpn.org/data/maps/sp... @usa-npn.bsky.social #phenology 053
Theresa Crimmins @theresacrimmins.bsky.social · 12/06/2026www.wjhl.com/outdoors-app... #phenology You can report your sightings of firefly activity through #NaturesNotebook! www.naturesnotebook.org @usa-npn.bsky.socialwjhl.comFireflies lighting up region earlier than usual this year(WJHL) – For many across Northeast Tennessee and Southwest Virginia, one of the first signs of summer has already arrived. Residents are reporting fireflies appearing a little earlier than th… 062
Theresa Crimmins @theresacrimmins.bsky.social · 15/05/2026This spring is wreaking havoc on fruit trees in parts of the eastern US #falsespring #phenology www.farmprogress.com/orchard-crop...farmprogress.comPennsylvania grower starts long slog to orchard recoveryAs spring arrives 10 days earlier on average than four decades ago, growers pay the price with total crop losses. 020
Reposted by Theresa CrimminsNatasha Vizcarra @natashavizcarra.bsky.social · 24/04/2026Got #pollen #allergies? You might find relief in less-well-lit rural towns than in brightly lit cities. Read more in my latest story for @snexplores.bsky.social bit.ly/3QZzmKF #lightpollution #phenology #pollenseason Interviews w/ Lin Meng, @theresacrimmins.bsky.social & @jonbennie.bsky.socialbit.lyGot pollen allergies? Light pollution might make them worseLight pollution in North American cities seems to be tricking plants into releasing pollen for longer periods each year. 042
Theresa Crimmins @theresacrimmins.bsky.social · 20/04/2026Had a little piece post on the MIT Press Reader this morning - always happy to talk about #phenology, why it matters, and how changing phenology might affect us all thereader.mitpress.mit.edu/what-the-cra... @mitpress.bsky.socialthereader.mitpress.mit.edu 042
Theresa Crimmins @theresacrimmins.bsky.social · 17/04/2026Incredible efforts to maintain the 1,200 year-long cherry flowering dataset in Japan. Thank you for your efforts, Dr. Yasuyuki Aono! The world will miss you!! #phenology telefonorojo.mx/man-saved-mi...telefonorojo.mxThe Man Who Saved a Millennium of Japanese Climate History — TelefonorojoYasuyuki Aono didn't just study flowers. He spent his life obsessed with a specific biological clock that's been ticking in Kyoto for over 1,200 years. While mo 1114
Theresa Crimmins @theresacrimmins.bsky.social · 16/04/2026The @usa-npn.bsky.social's Late Bloom Index is now live! This map shows where conditions associated with the conclusion of the spring season are being reached early or late. This year, the end of spring is quite early in the SW US; FL is average. www.usanpn.org/data/maps/sp... #phenology 0104
Theresa Crimmins @theresacrimmins.bsky.social · 02/04/2026Really nice article and visuals in @washingtonpost.com this morning showing how spring has arrived early - very early - in much of the lower 48 states www.washingtonpost.com/weather/inte... @usa-npn.bsky.social #phenology @bennollweather.bsky.socialwashingtonpost.comSee where flowers and leaves are emerging early after record-warm MarchAbout 190 million people across the U.S. are experiencing an early start to spring, based on the behavior of lilac and honeysuckle, data shows. 0146
Reposted by Theresa CrimminsHelen Day @lbflyawayhome.bsky.social · 26/03/2026“Find a hedgerow on a bank and examine just one yard of it. Then make a list of all the different plants you can find in that yard. You will be astonished at the variety” (1965) Artist: Ronald Lampitt Writer: Richard Bowood 541880
Theresa Crimmins @theresacrimmins.bsky.social · 24/03/2026With all the recent record-breaking heat in the western states, it's no surprise to see many locations starting spring green-up (L) and flowering (R) 2-4+ weeks early. Early start=early allergies. Subsequent freeze events could do major damage to crops. www.usanpn.org/data/maps/sp... #phenology 072
Theresa Crimmins @theresacrimmins.bsky.social · 11/03/2026Parts of MT reaching leaf-out 30+d early this year. This very early spring is largely occurring in locations where things have been trending earlier over the past 4 decades #phenology www.usanpn.org/data/maps/sp... www.climatecentral.org/climate-matt... @usa-npn.bsky.social @climatecentral.org 13716
Theresa Crimmins @theresacrimmins.bsky.social · 10/03/2026Join our Keynote Speaker, Mark Hineline, for "A Life in Season" on March 18, 3pm PT / 6pm ET! In this @usa-npn.bsky.social Phenology Week webinar, Mark will take you through themes that have shaped his life, including #phenology. www.usanpn.org/news/article... 052
Reposted by Theresa CrimminsMIT Press @mitpress.bsky.social · 07/03/2026Buds and bees may not be out yet, but spring is coming! @theresacrimmins.bsky.social joined @thebrianlehrershow.bsky.social to discuss phenology and what changes in plants and animals will signal the coming season. www.wnyc.org/story/wild-n... @wnyc.orgwnyc.orgWild NYC - Spring is Coming | The Brian Lehrer Show | WNYCBotanist/ecologist Marielle Anzelone and phenologist Theresa Crimmins introduce a new series on local wildlife. 0195
Theresa Crimmins @theresacrimmins.bsky.social · 02/03/2026I'm excited to join @climatecentral.org's Monthly Climate Brief on Thurs, Mar 19. We'll be talking about (surprise!) what is happening this spring and how you can get involved in tracking signs of the season. We'd love to have you join us! #phenology #statusofspring @usa-npn.bsky.social 0206
Theresa Crimmins @theresacrimmins.bsky.social · 26/02/2026Early signs of spring in WY - buds swelling on trees & shrubs. Lots of potential for subsequent freeze events there. www.newslj.com/local-trees-... @usa-npn.bsky.social growing degree day anomaly map clearly shows how much warmer than normal it has been so far this year #phenology #statusofspring 1134
Theresa Crimmins @theresacrimmins.bsky.social · 25/02/2026Do you suffer from cedar fever -- an allergy to mountain cedar (aka Ashe juniper, aka Juniperus ashei)? If so, I'd love to chat. I'm writing a book and want to include a brief bit from the perspective of someone whose life is severely impacted by pollen allergies. DM if interested! #allergies 033
Theresa Crimmins @theresacrimmins.bsky.social · 24/02/2026A great reminder of the differences among astronomical, climatological, and phenological spring: www.bbc.com/weather/arti... #phenology #statusofspringbbc.comWhen does spring start in 2026?As milder air sweeps across the UK it could start to feel positively spring-like in places. But when does spring officially begin? 020
Theresa Crimmins @theresacrimmins.bsky.social · 17/02/2026The @usa-npn.bsky.social team will be celebrating #Pheology Week Mar 16-20 to coincide with the Spring Equinox. Join us for some fun and educational opportunities to celebrate the start of the spring season! www.usanpn.org/news/article... 072
Theresa Crimmins @theresacrimmins.bsky.social · 16/02/2026All that cold the L48 recently experienced really slowed down the onset of spring. But we are starting to see things pick back up, with extra-early activity in the TX panhandle and through parts of AZ, CA, and up the west coast #statusofspring www.usanpn.org/data/maps/sp... @usa-npn.bsky.social 0147
Theresa Crimmins @theresacrimmins.bsky.social · 09/02/2026Predict when cherry trees will flower at locations around the globe and win prizes! Both remote and in-person participation opportunities this year! #phenology #ecologicalforecasting #statistics #statusofspring competition.statistics.gmu.educompetition.statistics.gmu.edu2026 Prediction Competition - International Cherry Blossom Prediction CompetitionWhen will the cherry trees bloom in 2026? We invite contestants to submit their predictions for Washington, D.C. (USA), Kyoto (Japan), Liestal-Weideli (Switzerland), Vancouver, BC (Canada) and New Yor... 030
Reposted by Theresa CrimminsUSA National Phenology Network @usa-npn.bsky.social · 02/02/2026Our maps of heat accumulation provide a more scientific look at how much heat has accumulated so far this year. Our maps show that heat accumulation is ahead of schedule in much of the west, on time in the Midwest and upper Northeast, and behind schedule in the East. 121
Reposted by Theresa CrimminsUSA National Phenology Network @usa-npn.bsky.social · 02/02/2026According to predictions from NOAA's Climate Prediction Center, Phil may be right for parts of the Northern Great Plains - more cool temperatures are on the way! Much of the SW and SE should see above-avg temps in coming weeks and the NW, MW, and NE should see avg temps. 101
Reposted by Theresa CrimminsUSA National Phenology Network @usa-npn.bsky.social · 02/02/2026To watch the progression of spring across the country, check out our spring forecast maps - updated daily! usanpn.org/data/maps/sp...usanpn.orgStatus of Spring | USA National Phenology Network 033
Reposted by Theresa CrimminsUSA National Phenology Network @usa-npn.bsky.social · 02/02/2026Punxsutawney Phil has made his annual prediction of what the next six weeks of weather will bring. According to Phil, more winter is on the way! But what does the science say? #GroundhogDay Keep track of Spring's arrival: usanpn.org/data/maps/sp... 151
Theresa Crimmins @theresacrimmins.bsky.social · 27/01/2026Cedar fever got you feeling crummy? @usa-npn.bsky.social is collecting of Ashe's juniper pollen development and release through the NASA-funded PollenCAST project! Your observations of when junipers release pollen in TX will support real-time forecasts of airborne pollen usanpn.org/nn/campaigns... 041
Theresa Crimmins @theresacrimmins.bsky.social · 21/01/2026And we're off! Spring has started to arrive in the most southern states, and in parts of TX, LA, and MS, it's >two weeks earlier than "normal" (the last 3 full decades). I feel like a broken record, we say this nearly every spring... #phenology @usa-npn.bsky.social usanpn.org/data/maps/sp... 133
Theresa Crimmins @theresacrimmins.bsky.social · 20/01/2026Awesome @usa-npn.bsky.social partners Toby Ault and Carlos Carillo at @cornelluniversity.bsky.social released their long-lead forecast for spring; they are predicting a pretty early start to springtime activity in much of the U.S. six-ecrl-24.s3.amazonaws.com/index.html #phenology 274
Theresa Crimmins @theresacrimmins.bsky.social · 17/01/2026Spring wildflowers are blooming earlier than in the 1800s... and it's the ones that flower earliest in the season that are showing the greatest shifts in their activity. Great work by Ryan Utz, @jmheberling.bsky.social, and crew: www.alleghenyfront.org/early-spring... #phenologyalleghenyfront.orgEarly spring wildflowers are blooming even earlier thanks to climate changeStudy authors used botanical records from over 100 years to explore how native wildflower bloom dates in Pennsylvania have changed due to climate change. 083
Reposted by Theresa CrimminsMIT Press @mitpress.bsky.social · 12/01/2026Writing for NYT, Margaret Roach looks at changing landscapes & weather patterns with new eyes, referring to "Phenology" author Theresa Crimmins' advice to "weave a practice of observing seasonal cycles of plants and animals into your life to contribute to science as well as soothe your soul":nytimes.comNew Rules for the New YearPerhaps the best way to confront the swiftly changing landscape is to swallow hard, and then move forward with a fresh approach. 1133
Theresa Crimmins @theresacrimmins.bsky.social · 12/01/2026Calling #NaturesNotebook participants! We have an opportunity for 18 observers to be interviewed by undergraduate students at UCLA this spring. The observer profiles will be featured on the @usa-npn.bsky.social website and in future newsletters. Interested? docs.google.com/forms/d/e/1F...docs.google.comSign up to be interviewed by science writing students this springWe have an opportunity for 18 Nature's Notebook observers to be interviewed by undergraduate students in a science writing course at UCLA titled "Science Writing for Public Engagement and Community Sc... 042
Theresa Crimmins @theresacrimmins.bsky.social · 01/01/2026Amen! New Rules for the New Year www.nytimes.com/2025/12/31/r... #phenology #climatechange #sustainability #keepingittogethernytimes.comNew Rules for the New Year 010
Theresa Crimmins @theresacrimmins.bsky.social · 18/12/2025December is a time when ‘… of the Year’ pieces appear in all kinds of publications. Nature Plants joined the trend, highlighting the importance of ground-based observations, like the @usa-npn.bsky.social 's plant and animal #phenology reports, in ground-truthing www.nature.com/articles/s41...nature.com… of the Year - Nature PlantsDecember is a time when ‘… of the Year’ pieces appear in all kinds of publications. For this year only, Nature Plants is joining the trend. 030
Theresa Crimmins @theresacrimmins.bsky.social · 01/12/2025Definitely don't miss the virtual gathering of folks involved in tracking #phenology in the U.S. in Jan - it's going to be great! 030
Theresa Crimmins @theresacrimmins.bsky.social · 03/11/2025goodmenproject.com/featured-con... Mt Auburn is a really special place, and their volunteers that track #phenology and other phenomena are really special people!goodmenproject.comCemeteries: How the Dead Protect the WildFrom wildly popular to nearly forgotten, some of our cemeteries play an unexpected role in fostering biodiversity — and may provide climate solutions, too. 052
Theresa Crimmins @theresacrimmins.bsky.social · 24/09/2025www.nbcnews.com/science/clim... #phenologynbcnews.comBright, brief and early: New England's fall foliage may not last longA season that draws millions of tourists and billions of dollars to the Northeast may be briefer and less predictable this year as climate change reshapes the iconic fall landscape. 031
Theresa Crimmins @theresacrimmins.bsky.social · 22/09/2025Amazing interview with Amanda Wanlass, Executive Director of Indiana #Phenology! www.wishtv.com/beo-show/loc...wishtv.comLocal Group Helps Track Seasonal Changes in Plants and AnimalsThe team at Indiana Phenology travels the state, helping small businesses, teachers, and community groups learn how to track important seasonal changes in the environment. 040
Theresa Crimmins @theresacrimmins.bsky.social · 22/09/2025I had such a great time at the Colorado Native Plant Society meeting this past weekend! Made some great friends and enjoyed seeing some glimpses of fall color 🍂#phenology 040
Reposted by Theresa CrimminsUSA National Phenology Network @usa-npn.bsky.social · 15/09/2025Applications now open for our Local Phenology Leader Certification Course, an interactive, online 10-week course on planning and implementing a long-term phenological monitoring program for your organization or community. Course runs Sep 29-Dec 5. Apply by Sep 21. www.usanpn.org/nn/LPLCertif... 033
Theresa Crimmins @theresacrimmins.bsky.social · 14/08/2025The 2024 #BulletinAMS State of the Climate Assessment is out today. @usa-npn.bsky.social contributed data & info about how #phenology is changing in the U.S. The timing of plant and animal activity such as leaf-out is a strong indicator of species and ecosystem response to changing conditions. 0103
Theresa Crimmins @theresacrimmins.bsky.social · 18/07/2025Hooray @lpzoo.org! Congrats on 5 years of #phenology observations on native hibiscus! www.lpzoo.org/phenology-an...lpzoo.orgPhenology and Flowers: Researching the Growing Cycles of Plants | Lincoln Park ZooAn project studying the growing cycles of plants has been going on at Lincoln Park Zoo for five years—and is poised to expand for the next five. 041
Theresa Crimmins @theresacrimmins.bsky.social · 09/07/2025Thank you so much, Michelle Sutton, for the wonderful review of my book, _#Phenology_, in City Trees Magazine! read.dmtmag.com/i/1537178-ju...?read.dmtmag.comCity Trees - July/August 2025City Trees is a premier publication focused on urban + community forestry. In each issue, you’ll learn how to best manage the trees in your community and more! 000
Theresa Crimmins @theresacrimmins.bsky.social · 20/06/2025Now, as always, getting outside is good for you and your mood. Thankful for the opportunity to write for Arizona Daily Sun. #phenology azdailysun.com/opinion/colu...azdailysun.comSpotlight on Climate: Moments in nature can still soothe your climate-weary soulAnd just like that, spring is behind us. The first day of summer will be here this weekend. But around the state, we are lacking some of the classic harbingers 041
Theresa Crimmins @theresacrimmins.bsky.social · 14/06/2025@jeremyclark.bsky.social helped the @usa-npn.bsky.social explore options for generating commercial revenue. It's tough for programs exist to serve the public. I hope our experience can help other programs suddenly struggling with $ loss. agupubs.onlinelibrary.wiley.com/doi/10.1029/...agupubs.onlinelibrary.wiley.com 121
Theresa Crimmins @theresacrimmins.bsky.social · 12/06/2025It's not uncommon for spring to start out early and then slow down, or vice-versa... see where either of those sequences of events occurred in the L48 states this past spring: www.climate.gov/news-feature... #phenology @usa-npn.bsky.social @climate.noaa.govclimate.govFirst blooms of the 2025 spring season were earlier than average across most of the United StatesAccording to a long-term index of flower timing, most U.S. areas saw flowers emerge earlier than average, except for a few, mostly coastal areas. 063
Reposted by Theresa CrimminsTheresa Crimmins @theresacrimmins.bsky.social · 25/10/2024Call for papers! Special issue in new @SpringerNature journal _Discover Life_ : Plant #phenology in an era of rapid global change: new perspectives and frontiers. Co-editing this collection with the fabulous Rob Guralnick and @diji.bsky.social link.springer.com/collections/...link.springer.comPlant phenology in an era of rapid global change: new perspectives and frontiersPhenology is a crucial indicator of plant responses to environmental changes, with multifaceted implications for individual plants, ecological communities, ... 185
Reposted by Theresa CrimminsNatural History Institute @nhi-prescott.bsky.social · 16/05/2025Join us for a talk by Theresa Crimmins on how we can all participate in documenting the timing of seasonal life cycle events—with benefits including mental health and supporting climate change action! @theresacrimmins.bsky.social @usa-npn.bsky.social 061
Theresa Crimmins @theresacrimmins.bsky.social · 16/05/2025Today I got to witness a 5' gopher snake devour a young dove right from the nest - wow! #nature 1110
Reposted by Theresa CrimminsMIT Press @mitpress.bsky.social · 03/05/2025No need to dig for your next read: @empressofdirt.bsky.social provides recommendations from her #garden and #nature bookshelf, including "Phenology" by @theresacrimmins.bsky.social and "The Urban Naturalist" by @schilthuizen.bsky.social:empressofdirt.netWhat I’m Reading: Gardening, Nature, & Life Stories — Empress of DirtIf you’re looking for gardening and nature books that explore how the outdoors shapes our lives (and vice versa), this is a growing list of titles I’m reading, enjoying, and recommending, covering… 1195