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Marta Vallvé

@martavallve.bsky.social
145 followers 232 following 35 posts

Studying ecological transitions

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Eva Anduiza @evaanduiza.bsky.social · 17/04/2026
I think @dec-gr.bsky.social is pretty happy with you being part of the team, Marta. You have been the best possible PhD student. Congratulations!!! 👏😊
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Marta Vallvé @martavallve.bsky.social · 25/03/2026
María, thank you! It has been so nice and fun to share not only the working space with you but so much more! ♥️
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Marta Vallvé @martavallve.bsky.social · 25/03/2026
Thank you so much, Rubén! I'm looking forward to seeing your amazing work presented in your defence very soon! ♥️
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Marta Vallvé @martavallve.bsky.social · 25/03/2026
Having officially finished my PhD, I can say that one of the best things of this journey was being part of the @dec-gr.bsky.social. Thank you so much for everything!
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Marta Vallvé @martavallve.bsky.social · 16/03/2026
Aquest divendres a les 11h defenso la meva tesi doctoral a la UAB: www.uab.cat/ca/escola-do...
uab.cat
Presentació de tesi
Tesi
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Eva Anduiza @evaanduiza.bsky.social · 16/02/2026
It has been great to navigate this paper with amazing @gefjonoff.bsky.social . Started expecting angry right-wing men to feel threatened by feminism and found out more than one surprise 👇
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Martín Lallana @martinlallanas.bsky.social · 23/01/2026
Algunas reflexiones sobre la fotovoltaica en tejados. A finales de 2025, la fotovoltaica conectada a red en el estado español generó 50 TWh y el autoconsumo 10 TWh. Algunos estudios recientes estiman el potencial de generación en tejados. Veamos los resultados y algunas conclusiones políticas ⤵️
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Javier Gil @javigil.bsky.social · 14/01/2026
La brecha de renta entre caseros e inquilinos es brutal. El mercado del alquiler está destrozando nuestra sociedad: redistribuye renta de quienes menos tienen hacia quienes más riqueza concentran, cada vez en mayor medida. El alquiler es una fábrica de desigualdad.
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Climática @climatica.coop · 14/01/2026
🌡️ Los últimos 11 años han sido los 11 más cálidos desde que existen registros Por primera vez, la temperatura media global ha superado los +1,5 ºC en promedio durante tres años consecutivos respecto al periodo preindustrial. ✍️ @edurobayna.bsky.social
f.mtr.cool
Los últimos once años han sido los once años más calurosos a nivel global - Climática, el medio especializado en clima y biodiversidad
El promedio del trienio 2023-2025 supera los 1,5 ºC de calentamiento global, consolidando una tendencia inequívoca impulsada por la acción humana.
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Reposted by Marta Vallvé
Environmental Politics @environmentalpol.bsky.social · 08/01/2026
New article! The losers of ecological transitions: rural and urban support for green policies in Spain, by Marta Vallvé @martavallve.bsky.social & Eva Anduiza @evaanduiza.bsky.social doi.org/10.1080/0964...
Green policies can be contentious, with opposition often highlighting rural-urban divides. In this article we measure and analyse the perceptions of harm associated with several green policies (renewables, motor fuel taxes, car restrictions, conservation restrictions, and pesticide and antibiotics bans). We conceptualize these perceptions of harm as an individual dimension of the environmental justice paradigm, closely related to support for green policies and its characteristic rural-urban gap. Using survey data from Spain, our findings reveal that perceptions of harm, together with postmaterialist values and environmental prioritization, are associated with support for green policies. However, only differences in perceptions of harm account for the rural-urban gap, which is modest in size and remains partly unexplained. Our findings suggest that rural dwellers are not less supportive of green policies because they have weaker postmaterialist values or prioritize the environment less, but because they feel they are the losers of ecological transitions.
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Urban Studies Foundation @urbanstudiesfoundation.org · 07/01/2026
⏰ Reminder: Urban Urgencies funding call now open There’s still time to apply for the Urban Urgencies grant from the Urban Studies Foundation — supporting rapid, collaborative research on pressing urban challenges worldwide. 🗓️ Deadline: 23 March 2026 (23:59 UTC). 🔗 ow.ly/FUIn50XGtgz
USF flyer with USF logo for the Call for Applications "Urban Urgencies" Grant on a picture via Flickr by Hanif Omar, and the quote "The Urban Studies Foundation is launching a major new grant to support rapid-response collaborative research on the world’s most pressing urban challenges."USF flyer with USF logo for the Call for Applications "Urban Urgencies" Grant on a picture via Flickr by Hanif Omar, and the quote "The Urban Studies Foundation is launching a major new grant to support rapid-response collaborative research on the world’s most pressing urban challenges."
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Pedro Manuel Bellón @pedromaaa.bsky.social · 07/01/2026
Y aquí por @elpais.com 📰 bsky.app/profile/dec-...
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Marta Vallvé @martavallve.bsky.social · 30/12/2025
Departing from this, I propose to identify the social and natural aspects of the rift, their interrelation, and their link to capital accumulation to understand the material roots of any particular socio-ecological conflict.
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Marta Vallvé @martavallve.bsky.social · 30/12/2025
Those separations in the social terrain create the setting for the disruption of natural cycles, generating ecological conflicts. So, bingo! This view connected social contradictions with natural degradation and could be useful to study the link between social conflicts and ecological issues.
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Marta Vallvé @martavallve.bsky.social · 30/12/2025
Therefore, I could see that when Marx talks about a rift in social metabolism, he is referring to a separation in the social terrain. A separation between production and consumption, between labour products and human needs, between humans and their conditions of reproduction.
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Marta Vallvé @martavallve.bsky.social · 30/12/2025
After analysing all Marx's passages on metabolism, I realised that he doesn't use the term "social metabolism" as a synonym for the metabolic interaction between humans and nature, but to refer to the internal metabolism in society, by which the products of labour reach human needs (circulation).
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Marta Vallvé @martavallve.bsky.social · 30/12/2025
What was common between Foster and that literature on ecological distribution conflicts was their understanding of social metabolism as flows of energy and materials. Foster (and many others) attribute this definition to Marx, but I couldn't find the passage where Marx said that.
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Marta Vallvé @martavallve.bsky.social · 30/12/2025
Being a fan of J. B. Foster, I thought using a metabolic rift approach to analyse the material bases of socio-ecological conflicts would be pertinent. As a Marxist approach, it is inherently historical and links social contradictions and ecological degradation to capital accumulation.
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Marta Vallvé @martavallve.bsky.social · 30/12/2025
I thought it was a great idea to use a metabolic approach to study socio-ecological conflicts, but I also thought: sure, more mining will generate more conflicts around mining, but I would like to be able to say something more. Why does mining increase? Why is this mining conflictive?
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Marta Vallvé @martavallve.bsky.social · 30/12/2025
Then, I came across this literature on ecological distribution conflicts that studies how increases or changes in social metabolism (defined as flows of energy and materials) generate social conflicts around ecological issues (e.g. the more mining, the more social conflicts around mining).
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Marta Vallvé @martavallve.bsky.social · 30/12/2025
I had also learned that ecological problems appear when this metabolic interaction between humans and their environments enters into contradiction with natural cycles (e.g., displacing the nutrients of the soil or disrupting the hydric cycle by taking too much water fast). That is a metabolic rift.
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Marta Vallvé @martavallve.bsky.social · 30/12/2025
I had learned from Marxist ecology literature that, just as organisms or cells, societies have a metabolism with their environments, without which they cannot live. They take raw materials and energy, transform nature, and leave waste in the process of producing goods to cover human needs.
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Marta Vallvé @martavallve.bsky.social · 30/12/2025
In my thesis, I analyse social conflicts and divides around green policies, but before doing a case study, I wanted to reflect on the theoretical approach and research strategy to analyse those conflicts and divides. This article is the outcome of this reflection.
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Marta Vallvé @martavallve.bsky.social · 30/12/2025
New publication! I wrote a conceptual paper reflecting on how to study the material roots of socio-ecological conflicts using a metabolic rift approach. This is the story of how this paper came to be 🧵 doi.org/10.1177/0486...
doi.org
The Materiality of Socio-Ecological Conflicts: A Revised Interpretation of Marx’s Theory of Metabolic Rift - Marta Vallvé, 2025
In the context of ecological crisis and ecological transitions, socio-ecological conflicts are increasing. While their material causes are often attributed to s...
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Ecologistas en Acción @ecologistasenaccion.org · 29/12/2025
Ecologistas en Acción publicamos 'Cuando el lobby fósil rebaja la ciencia: desregulación y captura corporativa en el giro climático de la UE hacia 2040', un informe que analiza la evolución de la normativa climática europea y el impacto de las leyes ómnibus aprobadas durante 2025.
ecologistasenaccion.org
Ecologistas en Acción presenta un estudio sobre la política climática europea en 2025 • Ecologistas en Acción
El informe ‘Cuando el lobby fósil rebaja la ciencia: desregulación y captura corporativa en el giro climático de la UE hacia 2040’ analiza la evolución de la normativa climática europea y el impacto d...
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Educación Forestal @eforestal.forestry.es · 28/12/2025
🌳 Descubre el SIOSE de Alta Resolución: un nuevo estándar de información del suelo en 🇪🇸. Basado en la integración de datos LiDAR y satélite, ofrece una precisión máxima alineada con los estándares europeos 🇪🇺EAGLE. 🛰️🗺️ Consulta el artículo completo aquí: edu.forestry.es/2025/12/sios... #Forestal 🍁
edu.forestry.es
SIOSE alta resolución - terreno forestal
Aquí encontrarás artículos de temática forestal muy interesantes y si eres una persona curiosa seguro que no te dejarán indiferente.
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Marta Vallvé @martavallve.bsky.social · 29/12/2025
També les emissions de CO2 segueixen creixent. No pot venir de sorpresa que, segons l'Emission Gap Report de 2025 (UNEP), virtualment ja no es pugui evitar una pujada de 1,5 ºC per sobre els nivells preindustrials. www.unep.org/resources/em...
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Marta Vallvé @martavallve.bsky.social · 29/12/2025
El gràfic de l'evolució de les proporcions pot ser enganyós, ja que semblaria que les renovables pugen perquè els combustibles fòssils i la nuclear baixen. En realitat, els combustibles fòssils segueixen pujant i les renovables s'afegeixen a un mix energètic creixent.
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Marta Vallvé @martavallve.bsky.social · 29/12/2025
És cert que les renovables ja produeixen el 30% de l'electricitat mundial, tot i que només el 14,82% de l'energia primària. Però més important que això... 👇
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Jacobin @jacobinmag.bsky.social · 23/12/2025
Europe has often called itself a global leader in fighting climate change, even promising to halt the sale of new gas-powered cars by 2035. Yet now it’s dropped the plan, as part of a broader retreat from the green transition.
jacobin.com
The European Union Is Turning Away From the Green Transition
Europe has often called itself a global leader in fighting climate change, even promising to halt the sale of new gas-powered cars by 2035. Yet now it’s dropped the plan, as part of a broader retreat from the green transition.
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Mobility Behaviour👨‍🎓 @davidloisuned.bsky.social · 22/12/2025
La posesión de un eléctrico se asocia con mayor número de viajes y kilómetros recorridos en automóvil a costa de la reducción de desplazamientos a pie, bici y transporte público. Los autores: "si bien el uso de los VE reduce las externalidades derivadas de las emisiones puede exacerbar otras"
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Marta Vallvé @martavallve.bsky.social · 22/12/2025
De totes formes, hem trobat que la diferència en el suport a polítiques verdes entre zones rurals i urbanes a Espanya és molt petita. Possiblement, aquest no és un tema tan central de divisió política territorial com pot ser en altres països.
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Marta Vallvé @martavallve.bsky.social · 22/12/2025
Tanmateix, només les percepcions de perjudici expliquen part de la bretxa rural-urbana en el suport a les polítiques verdes, suggerint que la major oposició rural està relacionada amb una major percepció de perjudici i no amb una menor priorització del medi ambient respecte a qüestions econòmiques.
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Marta Vallvé @martavallve.bsky.social · 22/12/2025
Els nostres resultats mostren que tant els valors postmaterials i la priorització del medi ambient per sobre del creixement econòmic, per una banda, com la percepció de perjudici de les polítiques verdes, per l'altra, estan relacionats amb el suport.
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Marta Vallvé @martavallve.bsky.social · 22/12/2025
L'oposició a les polítiques verdes també s'ha relacionat amb el repartiment dels seus costos, que sovint afecten especialment les zones rurals. (Per cert, sobre la transició energètica en zones rurals del sud de Catalunya recomano el llibre "Molinos y gigantes", de Jaume Franquesa).
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Marta Vallvé @martavallve.bsky.social · 22/12/2025
El suport a les polítiques verdes s'ha relacionat amb els valors postmaterials, així com l'oposició a elles s'ha relacionat amb la priorització d'objectius materials (econòmics, de seguretat, etc.) per sobre d'objectius postmaterials com la protecció al medi ambient o la llibertat d'expressió.
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Marta Vallvé @martavallve.bsky.social · 22/12/2025
Vàries investigacions han assenyalat l'existència d'una bretxa rural-urbana en el suport a les polítiques verdes: les persones que viuen a les ciutats solen donar-hi més suport que les que viuen en zones rurals. L'@evaanduiza.bsky.social i jo volíem estudiar quins factors expliquen aquesta bretxa.
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Marta Vallvé @martavallve.bsky.social · 22/12/2025
Ens han donat 50 eprints. Aquí el l'enllaç a l'article complet, per a qui li interessi. www.tandfonline.com/eprint/PPDF6... Us faig un petit resum del plantejament i els resultats 🧵
tandfonline.com
The losers of ecological transitions: rural and urban support for green policies in Spain
Green policies can be contentious, with opposition often highlighting rural-urban divides. In this article we measure and analyse the perceptions of harm associated with several green policies (ren...
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Reposted by Marta Vallvé
Pedro Manuel Bellón @pedromaaa.bsky.social · 22/12/2025
📰 Escribimos en @agendapublica.es sobre los efectos de la equiparación del permiso del permiso de paternidad sobre la penalización por maternidad. “La ampliación del permiso funciona especialmente bien en hogares donde ya existía una cierta igualdad previa” ⬇️⬇️⬇️ agendapublica.es/noticia/2048...
agendapublica.es
Cómo condiciona la desigualdad dentro de la pareja los efectos del permiso de paternidad
España ha conseguido permisos de paternidad iguales e intransferibles en tiempo récord, una reforma celebrada dentro y fuera del país. Pero un nuevo estudio de los investigadores Dani Marinova y Pedro...
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Marta Vallvé @martavallve.bsky.social · 17/12/2025
Thank you @peterbrannen.bsky.social for taking us, the readers, seriously and explaining to non-natural scientists complex scientific stuff in depth, which is surprisingly not so common in scientific dissemination books.
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Marta Vallvé @martavallve.bsky.social · 17/12/2025
It's also amazing to realise that a metabolic perspective not only helps us better understand the sources of our ecological problems today, but also the emergence of life in the first place in a universe seeking to increase entropy.
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Marta Vallvé @martavallve.bsky.social · 17/12/2025
In The Story of CO2 is the Story of Everything, we learn that CO2 is both the source of the main element of life (carbon) and mediates the relationship between virtually the only source of energy for the biosphere (the Sun) and the Earth, regulating the climate.
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Marta Vallvé @martavallve.bsky.social · 17/12/2025
Interestingly, we also see that, as with human history, the evolution of life is not linear but rather dialectic, contradictory, discontinuous. Life innovations can enter into contradiction with existing life forms, provoking crises, but might set the ground for further opportunities for life.
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Marta Vallvé @martavallve.bsky.social · 17/12/2025
It also points out how, alarmingly, our times share important elements of past extinction events (rapid CO2 emissions, ocean acidification, eutrophication, etc.).
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Marta Vallvé @martavallve.bsky.social · 17/12/2025
The Ends of the World examines the causes of past extinction events since the Cambrian period, showing how destabilisation of the carbon cycle has reliably led to mass extinctions.
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Marta Vallvé @martavallve.bsky.social · 17/12/2025
Anyone interested in the science of the ecological crisis, the history of life on our planet, and the interaction of industrial capitalism's metabolism with the carbon cycle, I strongly recommend these two books.
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Marta Vallvé @martavallve.bsky.social · 17/12/2025
A couple of years ago I read "The Ends of the World", by @peterbrannen.bsky.social, and it was literally life-changing. I'm now reading his last book, "The Story of CO2 is the Story of Everything". Best book of the year.
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DEC @dec-gr.bsky.social · 17/12/2025
📢 New publication alert: "The losers of ecological transitions: rural and urban support for green policies in Spain" by @martavallve.bsky.social & @evaanduiza.bsky.social in @environmentalpol.bsky.social www.tandfonline.com/doi/full/10....
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Marta Vallvé @martavallve.bsky.social · 16/12/2025
Why do rural dwellers show lower support for green policies? Is it because they prioritise the environment less over material goals, or because they perceive higher costs of green policies? Check out our new article! @environmentalpol.bsky.social @evaanduiza.bsky.social tuit.cat/OP6Ph
tandfonline.com
The losers of ecological transitions: rural and urban support for green policies in Spain
Green policies can be contentious, with opposition often highlighting rural-urban divides. In this article we measure and analyse the perceptions of harm associated with several green policies (ren...
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