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Pau Colom

@paucolom.bsky.social
298 followers 533 following 13 posts

Postdoc Researcher at @creaf.cat 🌳 Insects & global change 🦋🌍 #Phenology #PopulationTrends #CommunityStability #EcologicalNetworks #InsectMigration #UrbanEcology

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Reposted by Pau Colom
Catalan Butterfly Monitoring Scheme @catalanbms.org · 24/09/2026
Can conservation policies halt bird and butterfly declines in Europe? 🦋🐦 📉 Declines projected under all scenarios tested to 2050 🌾 Intensive land use remains a major pressure 🌍 Deeper changes in land management and stronger climate action needed 📄 doi.org/10.1038/s41559-026-03139-6
doi.org
Predicted decline in common bird and butterfly species even under conservation policy scenarios in Europe - Nature Ecology & Evolution
Projections for 265 common bird and 144 common butterfly species across Europe under multiple sustainability scenarios, including those of existing conservation objectives, find no scenario in which t...
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Pau Colom @paucolom.bsky.social · 24/09/2026
Impressive work linking heat tolerance and evolutionary history in tropical insects. It raises a key question: how much can behaviour and cool microhabitats compensate when physiological responses to warming are limited?
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Catalan Butterfly Monitoring Scheme @catalanbms.org · 21/07/2026
🦋 The BiBio Group is taking part in an international project to reintroduce the Black-veined White (Aporia crataegi) to southern England, where it disappeared in 1925 📊 Long-term data from the Catalan Butterfly Monitoring Scheme helped identify healthy Pyrenean populations that will act as donors
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Pau Colom @paucolom.bsky.social · 15/07/2026
Can’t wait for this!
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Pau Colom @paucolom.bsky.social · 23/06/2026
One of Europe’s most threatened butterflies, and clearly also in serious decline in the Mediterranean region...
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Catalan Butterfly Monitoring Scheme @catalanbms.org · 23/06/2026
🦋📉 14 butterflies disappearing from the Mediterranean landscape #6 Marsh Fritillary (Euphydryas aurinia) A univoltine species associated with open habitats within forest mosaics, such as woodland clearings and edges with honeysuckle. 🔗 More information: catalanbms.org/en/especies/nymeau/
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Catalan Butterfly Monitoring Scheme @catalanbms.org · 19/06/2026
No és una plaga. No és una invasió. És un dels fenòmens naturals més espectaculars, i aquest any l'estem vivint en primera persona a les Illes Balears 🦋✨
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Catalan Butterfly Monitoring Scheme @catalanbms.org · 17/06/2026
🦋📉 14 butterflies disappearing from Mediterranean landscapes #5 Wood White (Leptidea sinapis) A low-dispersal species with 2–3 generations per year. It is associated with woodland clearings and scrublands with legumes, up to 2,000 m altitude. 🔗 More information: catalanbms.org/en/especies/pielsi/
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Catalan Butterfly Monitoring Scheme @catalanbms.org · 09/06/2026
These days, you may have seen many Painted Ladies (Vanessa cardui) 👀🦋 But did you know they make an extraordinary journey of more than 10,000 km between Africa and Europe, across successive generations? 🌍 🔗 Download the poster here: catalanbms.org/en/recursos/
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Catalan Butterfly Monitoring Scheme @catalanbms.org · 08/06/2026
🦋📉 14 butterflies disappearing from the Mediterranean landscape #4 Western marbled white (Melanargia occitanica) It has one spring generation. It is typical of grasslands and open scrublands, mainly in lowland areas and up to 1,000m elevation. 🔗 More information: catalanbms.org/en/species/satmoc/
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Catalan Butterfly Monitoring Scheme @catalanbms.org · 02/06/2026
🦋 El Catalan Butterfly Monitoring Scheme (CBMS) és un projecte de ciència ciutadana i seguiment de papallones a Catalunya, Andorra i Illes Balears. 🙋 Vols ser voluntari/a? 🌐 Tota la informació a la web del projecte: catalanbms.org 📣 Ajuda'ns a difondre el projecte perquè arribi a més gent!
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Catalan Butterfly Monitoring Scheme @catalanbms.org · 28/05/2026
🦋📉 14 butterflies disappearing from the Mediterranean landscape #3 Black-eyed Blue (Glaucopsyche melanops) It has a single spring generation and inhabits open scrublands, grasslands and dry orchards, from low elevations up to around 1,000 m. 🔗 More information: catalanbms.org/en/especies/lycgme/
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Catalan Butterfly Monitoring Scheme @catalanbms.org · 27/05/2026
🦋 Ara que comencen a volar les espècies del gènere Melitaea, és bon moment per afinar l’ull. A Catalunya en tenim 8 espècies. Alguns petits caràcters morfològics poden ajudar molt a distingir-les. Compartim aquesta fitxa per ajudar-vos a identificar-les millor! Quines trobeu més difícils?
Damer puntejat (Melitaea cinxia); Autor: Joan Elias Camprubi. 26 de maig de 2019Damer de la valeriana (Melitaea diamina); Autor: David Vilassís. 10 de juliol de 2019Damer de la centàurea (Melitaea phoebe); Autor: Toni Arrizabalaga Blanch. 07 de maig de 2010
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Catalan Butterfly Monitoring Scheme @catalanbms.org · 19/05/2026
🦋📉 14 butterflies disappearing from the Mediterranean landscape #2 Dingy Skipper (Erynnis tages) It has a first spring generation and a second summer generation. It inhabits grasslands and other open habitats, from sea level to high mountains 🔗 More information: www.catalanbms.org/en/especies/...
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Catalan Butterfly Monitoring Scheme @catalanbms.org · 12/05/2026
🦋📉 14 butterflies disappearing from the Mediterranean landscape #1 Southern Gatekeeper (Pyronia cecilia) It flies during summer and has a single generation per year. It is typical of dry, open habitats in lowland Mediterranean areas. 🔗 More information: www.catalanbms.org/en/especies/satpce/
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Catalan Butterfly Monitoring Scheme @catalanbms.org · 12/05/2026
🦋📉 14 papallones que estan desapareixent del paisatge mediterrani #1 Saltabardisses de solell (Pyronia cecilia) Vola durant l’estiu i té una sola generació anual. És pròpia d’ambients oberts i xeròfils de les zones baixes mediterrànies. 🔗 Més informació: www.catalanbms.org/ca/especies/satpce/
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Pau Colom @paucolom.bsky.social · 22/04/2026
Always happy to do outreach on butterfly monitoring and conservation 🦋 Why do we count butterflies—and how do we do it? Spreading the word in Mallorca!
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Catalan Butterfly Monitoring Scheme @catalanbms.org · 01/04/2026
🦋 New general results section on the CBMS website! 📊📉 Explore how butterflies are changing in Catalonia: local and regional trends, cumulative changes in abundance, and multi-species indicators... 🌐👉 www.catalanbms.org/ca/resultats...
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Catalan Butterfly Monitoring Scheme @catalanbms.org · 01/04/2026
🦋 Nova secció de resultats generals al web del CBMS! 📊 📉 Hi pots explorar les tendències de les papallones a diferents escales (local i regional), els canvis acumulats d’abundància al llarg del temps i diversos indicadors multiespecífics... 🌐👉 www.catalanbms.org/ca/resultats...
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Catalan Butterfly Monitoring Scheme @catalanbms.org · 31/03/2026
🏔️🐄 Long-term grazing shapes butterfly diversity in the Pyrenees ⚖️ Butterfly diversity peaks under moderate grazing 📉 Overgrazing or grassland abandonment → butterfly decline 🌿🦋 More plants → more butterflies (particularly specialists) 📄 Check out the paper: l1nq.com/uhj9m4t
Boxplots showing the effects of the grazing legacy regime on butterfly abundance (a), butterfly richness (c) and plant richness (e), with and without the weighted IUCN data transformation. The regimes are ordered from left to right, showing a decrease in the effects of herbivores in the long-term. EN (Encroached) – dominated by shrub communities resulting from long-term grazing abandonment; MO (Mosaic) – a mix of grassland and scattered shrubs reflecting short-term grazing abandonment; PR (Grazed grassland) – grasslands with no shrub structures, indicative of actively grazed systems; and OG (Overgrazed) – intensively grazed grasslands.Apollo (Parnassius apollo). Author: José Manuel Sesma Moranas. July 12, 2009 – Sabiñánigo.
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Catalan Butterfly Monitoring Scheme @catalanbms.org · 31/03/2026
🏔️🐄 La pastura a llarg termini determina la diversitat de papallones als Pirineus ⚖️ La diversitat és màxima amb una gestió moderada 📉 Sobreepastura o abandonament → menys papallones 🌿🦋 Més plantes → més papallones 🔗 Notícia (cat): sl1nk.com/h3ezhle 📄 Article (eng): l1nq.com/uhj9m4t
Boxplots que mostren els efectes del règim de pastura a llarg termini sobre l’abundància de papallones (a), la riquesa de papallones (c) i la riquesa de plantes (e), amb i sense la transformació ponderada segons dades de la IUCN. Els règims s’ordenen d’esquerra a dreta mostrant una disminució dels efectes dels herbívors a llarg termini. EN (Encroached) – dominat per comunitats arbustives resultat de l’abandonament de la pastura a llarg termini; MO (Mosaic) – combinació de prat i arbusts dispersos que reflecteix un abandonament recent de la pastura; PR (Grazed grassland) – prats sense estructura arbustiva, indicatius de sistemes activament pasturats; i OG (Overgrazed) – prats sotmesos a una pastura intensiva.Apol·lo (Parnassius apollo). Autor: José Manuel Sesma Moranas. 12 de juliol de 2009 - Sabiñánigo.
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Butterfly Conservation Europe @europebutterfly.bsky.social · 26/03/2026
A fitting tribute to a great man. He did so much to help us understand and conserve butterflies. He leaves us with some crucial knowledge to face the future
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Catalan Butterfly Monitoring Scheme @catalanbms.org · 28/03/2026
Towards a global butterfly index! 🦋🌍 Despite data gaps in many regions, butterflies are among the best candidates to build a global indicator for insects Long-term monitoring —like CBMS— is key 👉📄 Check out the scientific article: conbio.onlinelibrary.wiley.com/doi/10.1111/...
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Catalan Butterfly Monitoring Scheme @catalanbms.org · 28/03/2026
Cap a un índex global de papallones! 🦋🌍 Tot i els buits de dades a moltes regions, les papallones són un dels millors candidats per construir un indicador global pels insectes El seguiment a llarg termini —com el CBMS— és clau 🔗 Notícia (cat): l1nq.com/A1UsG 📄 Article (eng): l1nq.com/ylK12
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Benjamin Wildermuth @bmwildermuth.bsky.social · 02/12/2025
New study on arthropod declines @natecoevo.nature.com 🪲 In two time series @jena-experiment.bsky.social & @bexplo.bsky.social we show how community (dis)assembly underpins local biomass declines. It mostly boils down to species loss, with identity losing relevance. www.nature.com/articles/s41...
nature.com
Arthropod species loss underpins biomass declines - Nature Ecology & Evolution
Insects are declining in many regions. Here the authors show that arthropod biomass losses in Jena Experiment and Biodiversity Exploratories time series are driven more by species loss than by species...
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Catalan Butterfly Monitoring Scheme @catalanbms.org · 26/03/2026
Did you know we also record butterfly–flower interactions? 🦋🌸 Three decades of observations show how species loss limits the capacity of communities to reorganize their interactions in response to environmental change. 📄Read the scientific article: l1nq.com/L5wls
Mediterranean skipper (Gegenes nostrodamus). Picture of Jordi Corbera.Southern scarce swallowtail (Iphiclides podalirius). Picture of Jordi Corbera.False ilex hairstreak (Satyrium esculi). Picture of Jordi Corbera.High brown fritillary (Fabriciana adippe). Picture of Jordi Corbera.
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Catalan Butterfly Monitoring Scheme @catalanbms.org · 26/03/2026
Sabies que també comptam interaccions papallona-flor? 🦋🌸 Tres dècades d'observacions mostren com la pèrdua d’espècies limita la capacitat de les comunitats per reorganitzar les seves interaccions davant els canvis ambientals. 🔗Notícia (cat): l1nq.com/KBoEF 📄Article científic (eng): l1nq.com/L5wls
Sageta negra (Gegenes nostrodamus). Foto de Jordi Corbera.Papallona zebrada aranesa (Iphiclides podalirius). Foto de Jordi Corbera.Marroneta del roure (Satyrium ilicis). Foto de Jordi Corbera.Argentada de punts vermells (Fabriciana adippe). Foto de Jordi Corbera.
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uBMS @ubms.creaf.cat · 25/03/2026
Un estudi recent liderat per @paucolom.bsky.social i amb participació de @ylndmc.bsky.social del @creaf.cat constata, entre altres coses, que la urbanització intensifica els impactes del #canviclimàtic en les poblacions de #papallones 🧵👇
Diversos gràfics de l'estudi amb la presència d'una papallona zebrada i una llimonera.
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Catalan Butterfly Monitoring Scheme @catalanbms.org · 24/03/2026
Les confons sovint? Tenim la solució 🦋 Hem recopilat en un sol document totes les fitxes d'identificació publicades als 17 números de la revista Cynthia des del 2001. Més de 100 especies incloses! 👉 Descarrega el dossier complet: www.catalanbms.org/ca/recursos/
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Federico Riva @rivaecology.bsky.social · 23/03/2026
We’re missing a global indicator to track insects. By analyzing thousands of butterfly populations, we highlight both promising signals and key challenges—showing why these taxa are strong candidates for building a Global Index to support conservation. conbio.onlinelibrary.wiley.com/doi/10.1111/...
conbio.onlinelibrary.wiley.com
Addressing Gaps in Butterfly Population Monitoring to Catalyze Global Insect Conservation
The conservation community sorely lacks a global indicator of change in insect populations. Given widespread insect declines, addressing this gap is key for conservation and policy targets. We sugges...
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Pau Colom @paucolom.bsky.social · 20/03/2026
New study on temporal interaction turnover using a unique dataset 🦋🪷 Communities adapt to climate fluctuations through rewiring. But over the long term, as species are lost, rewiring declines—reducing the capacity of communities to buffer environmental change onlinelibrary.wiley.com/doi/epdf/10....
onlinelibrary.wiley.com
Three Decades of Butterfly–Plant Interaction Turnover Explained by Climate and Species Loss
Long-term biodiversity loss reshapes interaction dynamics inpollination networks. Communities become increasingly dominated bygeneralist species that are more capable of rewiring interactions thanspe...
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Pau Colom @paucolom.bsky.social · 20/03/2026
New study on temporal interaction turnover using a unique dataset 🦋🪷 Communities adapt to climate fluctuations through rewiring. But over the long term, as species are lost, rewiring declines—reducing the capacity of communities to buffer environmental change onlinelibrary.wiley.com/doi/epdf/10....
onlinelibrary.wiley.com
Three Decades of Butterfly–Plant Interaction Turnover Explained by Climate and Species Loss
Long-term biodiversity loss reshapes interaction dynamics inpollination networks. Communities become increasingly dominated bygeneralist species that are more capable of rewiring interactions thanspe...
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Germán Orizaola @gorizaola.bsky.social · 20/03/2026
Do you want life in your garden? Stop constantly mowing it. www.theguardian.com/environment/...
theguardian.com
Stop mowing the lawn – and five more ways to save Britain’s ‘charming’ and ‘polite’ gatekeeper butterflies
Conservation can be hard work. But not when it comes to helping these little orange and brown beauties
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martinswarren.bsky.social @martinswarren.bsky.social · 18/03/2026
Nice summary of long distance insect migration in the Guardian today with fancy graphics www.theguardian.com/environment/...
theguardian.com
Butterflies crossing oceans, moths navigating by the stars: unravelling the mysteries of insect migrations
Trillions of insects embark, largely unnoticed, on epic journeys every year across mountain ranges, deserts and seas, and it is only now, as their numbers suffer huge declines, that scientists are tra...
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Climática @climatica.coop · 15/03/2026
De 0,2 ºC por década a 0,35 ºC: el ritmo de calentamiento global casi se ha duplicado desde 2015 f.mtr.cool/uyaxjkfekp
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Brian J. Enquist @bjenquist.bsky.social · 04/03/2026
Looks like a fundamental study and approach ... Limited thermal tolerance in tropical insects and its genomic signature. Insects at high elevations utilize plasticity to cope with rising temperatures, whereas lowland species have limited plastic abilities. www.nature.com/articles/s41... 🧪🌐
nature.com
Limited thermal tolerance in tropical insects and its genomic signature - Nature
A survey of tropical insect populations and thermal tolerance limits indicates that species from lowland areas have low capacity to survive increased temperatures, and that thermal tolerance is limite...
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Pau Colom @paucolom.bsky.social · 26/02/2026
This February I’ve been sharing results from our new study on temporal interaction turnover and its links to climate change and species loss. Presented at @ecoflor.bsky.social 🌼 and the CBMS meeting 🦋 And the month ends with great news: the paper has been accepted in Ecology Letters! 🎉
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Emilie Ellis @e-ellis1.bsky.social · 25/02/2026
New paper out today (my final PhD chapter)! Increasing impervious surfaces strongly reduces cavity-nesting bee and wasp communities, and flower patches alone showed no detectable impact. @aer-ese-bes.bsky.social #openaccess besjournals.onlinelibrary.wiley.com/doi/10.1002/...
besjournals.onlinelibrary.wiley.com
Effects of flower patch additions and urbanisation on cavity‐nesting bees and wasps
Urbanisation can negatively affect cavity-nesting bees and wasps, yet common conservation interventions such as flower patches and artificial nests lack strong empirical support. In a 2-year experime...
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Reto Schmucki @retoschmucki.bsky.social · 03/02/2026
We just released the latest update of the European Grassland Butterfly Indicator. doi.org/10.5281/zeno... With nearly 50% decline since 1991 and the decline not reversing, this is again an urgent call for actions for bending the curve, restore habitat and protect biodiversity
doi.org
EU Grassland Butterfly Index 1991-2024 Technical report
Executive Summary Butterflies have been systematically monitored in Europe for several decades using standard protocols that are now adopted in over 30 countries. Butterflies are ideal biological indi...
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Charlotte Wright @charlottewright.bsky.social · 24/02/2026
Now online! In this review, we cover four major topics on butterflies and moths: their evolutionary history and diversification dynamics, genomics, global diversity patterns, and conservation 🦋🌏 (1/8) @natrevbiodiv.nature.com www.nature.com/articles/s44...
nature.com
Evolution, genomics and conservation of butterflies and moths - Nature Reviews Biodiversity
Butterflies and moths are key indicators of functioning and healthy ecosystems around the world. This Review describes the evolutionary history of the order Lepidoptera and tracks shifts in researcher...
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La Conversa (The Conversation en català) @laconversa.theconversation.com · 24/02/2026
Davant l’augment de les temperatures, conservar microclimes favorables pot marcar la diferència entre l’extinció local i la persistència d’una espècie. Hi ha grans solucions als mons petits que també ens beneficien els humans. ✍️ @jdiazcalafat.bsky.social, @uib.cat @culturacientifica.uib.cat
theconversation.com
Com l'ombra d'un arbre pot canviar-li la vida a un insecte (i als humans)
Davant l’augment de les temperatures, conservar microclimes favorables pot marcar la diferència entre l’extinció local i la persistència d’una espècie. Hi ha grans solucions als mons petits que també ...
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Pau Colom @paucolom.bsky.social · 17/02/2026
New paper on global change impacts on insects, out in GEB🦋🌍 Climate change and urbanisation act synergistically: butterfly declines are stronger under warming in urban environments. Species traits help explain heterogeneous responses. onlinelibrary.wiley.com/doi/10.1111/... @ylndmc.bsky.social
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Ferran Sayol @ferransayol.bsky.social · 25/09/2025
🚨PhD offer 👩‍🎓: Fascinated by island biodiversity, palaeoecology & human impacts on ecosystems? 🌴🦜🌍 Join @creaf.cat to explore how island life changed over the last 11,700 years. Deadline: 27 Oct 2025 Selection: ~November Starting: ~January 2026 Supervision: @sandranogue.bsky.social & me More info👇
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Pau Colom @paucolom.bsky.social · 15/09/2025
🤓👌
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iBartomeus @ibartomeus.bsky.social · 18/08/2025
Five 3-year Postdoc positions open at @ebdonana.bsky.social. I am happy to sponsor and mentor good candidates working in my field, but note that these are quite independent positions aimed at helping stabilize new researchers in the system. www.dropbox.com/scl/fi/4nqkq...
dropbox.com
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Nick Haddad @nickhaddad.bsky.social · 04/08/2025
More bad news for butterflies. Our new paper led by Wendy Leuenberger shows common species are declining even more rapidly than rare ones. @ZipkinLab Three decades of declines restructure butterfly communities in the Midwestern United States | PNAS www.pnas.org/doi/10.1073/pnas.2501340122
pnas.org
Three decades of declines restructure butterfly communities in the Midwestern United States | PNAS
Insects are declining worldwide. These declines have been documented across taxonomic groups and are worrisome given ecosystem services provided by...
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Butterfly Conservation Europe @europebutterfly.bsky.social · 29/07/2025
A full report of our latest European Grassland Index has just been published. It gives individual species trends as well as the overall decline of 50% since 1991-2023. Another update will be coming soon to include 2024 (which was not a good year for many butterflies) doi.org/10.5281/zeno...
doi.org
EU Grassland Butterfly Index 1991-2023 Technical report
Executive Summary Butterflies have been systematically monitored in Europe for several decades using standard protocols that are now adopted in over 30 countries. Butterflies are ideal biological indi...
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Iberian Group of Urban Ecology @igue-aeet.bsky.social · 29/05/2025
🌆 Urban Ecology goes beyond the themed sessions! All week, check out additional presentations in: 📍 Seminarios 1 & 7, Auditorio, Balconada, and Cova dos Libros Hear @paucolom.bsky.social or @pauguzman.bsky.social ‪talking about butterflies 🦋 and @hernandezaguero.com on nature-based solutions 🌿🔧
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