Juan Rodríguez-Márquez
@juanrdguezmarq.bsky.social
🔬 PhD candidate in Maritime Sciences and Technologies at @univcadiz.bsky.social
🌊 Interested in phytoplankton ecology 🦠, biological oceanography 🐟, and microbial ecology 🧬
📍Cádiz | Huelva
🌊 Interested in phytoplankton ecology 🦠, biological oceanography 🐟, and microbial ecology 🧬
📍Cádiz | Huelva
Pinned
Proud to share our new paper in Marine Environmental Research! 🎉
We reveal how 🌑 darkness reshapes the production of polyunsaturated aldehydes (PUAs) in coastal diatoms, key compounds for defense 🛡️ and ecosystem interactions 🌊.
🔗 doi.org/10.1016/j.ma...
We reveal how 🌑 darkness reshapes the production of polyunsaturated aldehydes (PUAs) in coastal diatoms, key compounds for defense 🛡️ and ecosystem interactions 🌊.
🔗 doi.org/10.1016/j.ma...
Reposted by Juan Rodríguez-Márquez
A few recent diatoms.
Paralia sulcata
Actinoptychus splendens and Actinoptychus vulgaris
Amphitetras antediluviana
Coscinodiscus radiatus
Not sure - can anyone help with this one? Synedra? Fragilaria?
Paralia sulcata
Actinoptychus splendens and Actinoptychus vulgaris
Amphitetras antediluviana
Coscinodiscus radiatus
Not sure - can anyone help with this one? Synedra? Fragilaria?
November 26, 2025 at 8:55 PM
A few recent diatoms.
Paralia sulcata
Actinoptychus splendens and Actinoptychus vulgaris
Amphitetras antediluviana
Coscinodiscus radiatus
Not sure - can anyone help with this one? Synedra? Fragilaria?
Paralia sulcata
Actinoptychus splendens and Actinoptychus vulgaris
Amphitetras antediluviana
Coscinodiscus radiatus
Not sure - can anyone help with this one? Synedra? Fragilaria?
Reposted by Juan Rodríguez-Márquez
Anyone good with marine flagellates? I thought this was quite a distinctive-looking chap with a reasonable chance of an ID? Any ideas?
#marineplankton #protistsonsky 🦑
#marineplankton #protistsonsky 🦑
November 27, 2025 at 2:05 PM
Anyone good with marine flagellates? I thought this was quite a distinctive-looking chap with a reasonable chance of an ID? Any ideas?
#marineplankton #protistsonsky 🦑
#marineplankton #protistsonsky 🦑
Reposted by Juan Rodríguez-Márquez
In our latest, we tackle a long-standing conundrum: when and where do diatoms reproduce sexually? Using a lab-to-field strategy, we designed conserved sex markers applied to microcosms & Tara Oceans metatranscriptomes, revealing widespread sex in the global ocean. Read all about it now in NatComm:
Conserved genetic markers reveal widespread diatom sexual reproduction in the global ocean - Nature Communications
Diatoms dominate the oceans, yet sexual reproduction - key to bloom dynamics and species evolvability - is rarely observed. Using a lab-to-field approach, this study presents conserved markers applica...
www.nature.com
November 18, 2025 at 6:31 AM
In our latest, we tackle a long-standing conundrum: when and where do diatoms reproduce sexually? Using a lab-to-field strategy, we designed conserved sex markers applied to microcosms & Tara Oceans metatranscriptomes, revealing widespread sex in the global ocean. Read all about it now in NatComm:
Reposted by Juan Rodríguez-Márquez
🌑🔬 La @univcadiz.bsky.social descubre que la oscura calma del fondo marino despierta la creación de moléculas bioactivas: las diatomeas aumentan su producción de aldehídos poliinsaturados tras largos periodos sin luz
📄 Descubre más en https://f.mtr.cool/foygjhrnho
📄 Descubre más en https://f.mtr.cool/foygjhrnho
November 17, 2025 at 1:11 PM
🌑🔬 La @univcadiz.bsky.social descubre que la oscura calma del fondo marino despierta la creación de moléculas bioactivas: las diatomeas aumentan su producción de aldehídos poliinsaturados tras largos periodos sin luz
📄 Descubre más en https://f.mtr.cool/foygjhrnho
📄 Descubre más en https://f.mtr.cool/foygjhrnho
Reposted by Juan Rodríguez-Márquez
Now that the Sept and Oct data are (belatedly) in, it looks like 2025 will be the second warmest year in the record (~80% probability). The last three years are in a class of their own.
November 15, 2025 at 4:54 PM
Now that the Sept and Oct data are (belatedly) in, it looks like 2025 will be the second warmest year in the record (~80% probability). The last three years are in a class of their own.
Reposted by Juan Rodríguez-Márquez
A hydrozoa medusa from the family Eirenidae (I think).
#marineplankton 🦑
#marineplankton 🦑
November 15, 2025 at 6:53 PM
A hydrozoa medusa from the family Eirenidae (I think).
#marineplankton 🦑
#marineplankton 🦑
Reposted by Juan Rodríguez-Márquez
Un estudio de la @univcadiz.bsky.social ha revelado un aspecto de las #diatomeas desconocido hasta ahora: ¿cómo aprovechan la oscuridad? Nos lo cuentan dos de sus autores @juanrdguezmarq.bsky.social y Ana Bartual:
Las diatomeas, una caja de sorpresas químicas para sobrevivir en la oscuridad
Las diatomeas, un ejemplo de éxito de supervivencia, generan unos compuestos químicos que les sirven para protegerse de depredadores y para comunicarse entre ellas. Estudios recientes demuestran que s...
theconversation.com
November 6, 2025 at 10:07 AM
Un estudio de la @univcadiz.bsky.social ha revelado un aspecto de las #diatomeas desconocido hasta ahora: ¿cómo aprovechan la oscuridad? Nos lo cuentan dos de sus autores @juanrdguezmarq.bsky.social y Ana Bartual:
Me hace mucha ilusión poder compartir un trocito de nuestra investigación más allá de lo puramente académico.
Gracias a @es.theconversation.com por darnos el altavoz y la oportunidad.
¡Espero que lo disfrutéis!😄
Gracias a @es.theconversation.com por darnos el altavoz y la oportunidad.
¡Espero que lo disfrutéis!😄
Las diatomeas, microalgas que generan el 20 % del carbono del planeta, no solo sobreviven en la oscuridad: un estudio revela que duplican su arsenal químico defensivo tras semanas sin luz.
Las diatomeas, una caja de sorpresas químicas para sobrevivir en la oscuridad
Las diatomeas, un ejemplo de éxito de supervivencia, generan unos compuestos químicos que les sirven para protegerse de depredadores y para comunicarse entre ellas. Estudios recientes demuestran que su capacidad de producirlos se incrementa tras periodos de latencia en la oscuridad.
theconversation.com
November 5, 2025 at 8:09 PM
Me hace mucha ilusión poder compartir un trocito de nuestra investigación más allá de lo puramente académico.
Gracias a @es.theconversation.com por darnos el altavoz y la oportunidad.
¡Espero que lo disfrutéis!😄
Gracias a @es.theconversation.com por darnos el altavoz y la oportunidad.
¡Espero que lo disfrutéis!😄
Reposted by Juan Rodríguez-Márquez
🐟Nuevo trabajo de Juan Rodriguez y su equipo, titulado: Darkness modulates polyunsaturated aldehyde production in two coastal diatoms.
#diatomeas #investigación #divulgación #INMAR
#diatomeas #investigación #divulgación #INMAR
November 5, 2025 at 1:03 PM
🐟Nuevo trabajo de Juan Rodriguez y su equipo, titulado: Darkness modulates polyunsaturated aldehyde production in two coastal diatoms.
#diatomeas #investigación #divulgación #INMAR
#diatomeas #investigación #divulgación #INMAR
Check out this article on science news: www.sciencenews.org/article/cora...
Coral collapse signals Earth's first climate tipping point
The global die-off of coral reefs signals a critical shift in Earth’s climate system with global environmental consequences along with economic ones.
www.sciencenews.org
October 25, 2025 at 12:14 PM
Check out this article on science news: www.sciencenews.org/article/cora...
Reposted by Juan Rodríguez-Márquez
How perturbed does the planet need to get for ecological systems to exceed their limits to survive? It depends on the parameter we look at. Some (like sea ice extent) are still at risk even under low-emissions scenarios. In high emissions - everything's red. 🧪
Link: bg.copernicus.org/articles/22/...
Link: bg.copernicus.org/articles/22/...
October 25, 2025 at 7:23 AM
How perturbed does the planet need to get for ecological systems to exceed their limits to survive? It depends on the parameter we look at. Some (like sea ice extent) are still at risk even under low-emissions scenarios. In high emissions - everything's red. 🧪
Link: bg.copernicus.org/articles/22/...
Link: bg.copernicus.org/articles/22/...
Reposted by Juan Rodríguez-Márquez
Silvana Estrada's powerful, yet elegant voice finds a way to bend wounds to her will and become whole. n.pr/4oat8DP
Silvana Estrada: Tiny Desk Concert
Silvana Estrada's powerful, yet elegant voice finds a way to bend wounds to her will and become whole.
n.pr
October 15, 2025 at 12:01 PM
Silvana Estrada's powerful, yet elegant voice finds a way to bend wounds to her will and become whole. n.pr/4oat8DP
Check out this article on science news: www.sciencenews.org/article/jane...
What Jane Goodall taught me about bones, loss and not wasting anything
A personal reflection recalls Jane Goodall’s quiet pragmatism, her deep bond with Gombe’s chimps and the scientific legacy of her skeletal collection.
www.sciencenews.org
October 6, 2025 at 2:52 PM
Check out this article on science news: www.sciencenews.org/article/jane...
Reposted by Juan Rodríguez-Márquez
Jane Goodall has died at the age of 91.
In 2020, Goodall spoke with Science Editor-in-Chief H. Holden Thorp for a #ScienceEditorial reflecting on the 60th anniversary of her arrival in Gombe to study wild chimpanzees. Read more: https://scim.ag/472Chb8
In 2020, Goodall spoke with Science Editor-in-Chief H. Holden Thorp for a #ScienceEditorial reflecting on the 60th anniversary of her arrival in Gombe to study wild chimpanzees. Read more: https://scim.ag/472Chb8
October 1, 2025 at 7:13 PM
Jane Goodall has died at the age of 91.
In 2020, Goodall spoke with Science Editor-in-Chief H. Holden Thorp for a #ScienceEditorial reflecting on the 60th anniversary of her arrival in Gombe to study wild chimpanzees. Read more: https://scim.ag/472Chb8
In 2020, Goodall spoke with Science Editor-in-Chief H. Holden Thorp for a #ScienceEditorial reflecting on the 60th anniversary of her arrival in Gombe to study wild chimpanzees. Read more: https://scim.ag/472Chb8
Reposted by Juan Rodríguez-Márquez
🔴 ÚLTIMA HORA | Muere la etóloga y primatóloga británica Jane Goodall a los 91 años social.elpais.com/wmfcr4
Muere la etóloga británica Jane Goodall a los 91 años
Revolucionó la ciencia desde los sesenta con sus métodos innovadores y fascinantes descubrimientos sobre los chimpancés salvajes
social.elpais.com
October 1, 2025 at 6:22 PM
🔴 ÚLTIMA HORA | Muere la etóloga y primatóloga británica Jane Goodall a los 91 años social.elpais.com/wmfcr4
Check out this article on science news: www.sciencenews.org/article/rive...
River turbulence can push toxic pollutants into the air
Levels of hydrogen sulfide gas soared near a raging section of the Tijuana River in San Diego, exposing residents to potentially harmful air pollution.
www.sciencenews.org
September 29, 2025 at 2:27 PM
Check out this article on science news: www.sciencenews.org/article/rive...
Reposted by Juan Rodríguez-Márquez
Proud to share our new paper in Marine Environmental Research! 🎉
We reveal how 🌑 darkness reshapes the production of polyunsaturated aldehydes (PUAs) in coastal diatoms, key compounds for defense 🛡️ and ecosystem interactions 🌊.
🔗 doi.org/10.1016/j.ma...
We reveal how 🌑 darkness reshapes the production of polyunsaturated aldehydes (PUAs) in coastal diatoms, key compounds for defense 🛡️ and ecosystem interactions 🌊.
🔗 doi.org/10.1016/j.ma...
September 15, 2025 at 5:22 PM
Proud to share our new paper in Marine Environmental Research! 🎉
We reveal how 🌑 darkness reshapes the production of polyunsaturated aldehydes (PUAs) in coastal diatoms, key compounds for defense 🛡️ and ecosystem interactions 🌊.
🔗 doi.org/10.1016/j.ma...
We reveal how 🌑 darkness reshapes the production of polyunsaturated aldehydes (PUAs) in coastal diatoms, key compounds for defense 🛡️ and ecosystem interactions 🌊.
🔗 doi.org/10.1016/j.ma...
Reposted by Juan Rodríguez-Márquez
The colours of terricolous #cyanobacteria and #algae are absolutely stunning.
August 23, 2025 at 9:34 PM
The colours of terricolous #cyanobacteria and #algae are absolutely stunning.
Check out this article on science news: www.sciencenews.org/article/avoi...
Want to avoid mosquito bites? Step away from the beer
A Dutch music festival turned into a mosquito lab, revealing how beer, weed, sleep and sunscreen affect your bite appeal.
www.sciencenews.org
September 24, 2025 at 6:03 AM
Check out this article on science news: www.sciencenews.org/article/avoi...
Reposted by Juan Rodríguez-Márquez
🐟 La investigadora Rocío Quintana y su equipo han publicado un nuevo #artículo científico titulado: Vertical Distribution and Composition of Plastics in Coastal Areas of the Gulf of Cádiz: Insights into Transport Dynamics.
#divulgación #Inmar #investigación
#divulgación #Inmar #investigación
September 23, 2025 at 11:05 AM
🐟 La investigadora Rocío Quintana y su equipo han publicado un nuevo #artículo científico titulado: Vertical Distribution and Composition of Plastics in Coastal Areas of the Gulf of Cádiz: Insights into Transport Dynamics.
#divulgación #Inmar #investigación
#divulgación #Inmar #investigación
Check out this article on science news: www.sciencenews.org/article/anta...
Antarctic lake microbes have flexible survival strategies
Life teems under the Antarctic ice sheet. In subglacial Lake Mercer, it is surprisingly versatile and isolated from the rest of the world.
www.sciencenews.org
September 19, 2025 at 11:53 AM
Check out this article on science news: www.sciencenews.org/article/anta...
Reposted by Juan Rodríguez-Márquez
⚠️ This summer, 16,500 heat-related deaths in Europe were linked to climate change, as reported by the latest study from Imperial College London.
🇪🇺 EU, time to step up climate efforts and adopt a science-based 2040 target!
No more loopholes or delays. Every failure costs lives.
🇪🇺 EU, time to step up climate efforts and adopt a science-based 2040 target!
No more loopholes or delays. Every failure costs lives.
📍On the EU Day for the Victims of the Global Climate Crisis, we remember those who lost their lives due to the devastating impacts of climate change. This day is also a call to action. Check below to see what we need to avoid the worst 👇
@cbmireland.bsky.social
@cbmireland.bsky.social
September 19, 2025 at 9:16 AM
⚠️ This summer, 16,500 heat-related deaths in Europe were linked to climate change, as reported by the latest study from Imperial College London.
🇪🇺 EU, time to step up climate efforts and adopt a science-based 2040 target!
No more loopholes or delays. Every failure costs lives.
🇪🇺 EU, time to step up climate efforts and adopt a science-based 2040 target!
No more loopholes or delays. Every failure costs lives.
Reposted by Juan Rodríguez-Márquez
A couple of marine mites (Halacaridae) from my latest plankton sample.
#marineplankton 🦑
#marineplankton 🦑
September 19, 2025 at 8:11 AM
A couple of marine mites (Halacaridae) from my latest plankton sample.
#marineplankton 🦑
#marineplankton 🦑
Proud to share our new paper in Marine Environmental Research! 🎉
We reveal how 🌑 darkness reshapes the production of polyunsaturated aldehydes (PUAs) in coastal diatoms, key compounds for defense 🛡️ and ecosystem interactions 🌊.
🔗 doi.org/10.1016/j.ma...
We reveal how 🌑 darkness reshapes the production of polyunsaturated aldehydes (PUAs) in coastal diatoms, key compounds for defense 🛡️ and ecosystem interactions 🌊.
🔗 doi.org/10.1016/j.ma...
September 15, 2025 at 5:22 PM
Proud to share our new paper in Marine Environmental Research! 🎉
We reveal how 🌑 darkness reshapes the production of polyunsaturated aldehydes (PUAs) in coastal diatoms, key compounds for defense 🛡️ and ecosystem interactions 🌊.
🔗 doi.org/10.1016/j.ma...
We reveal how 🌑 darkness reshapes the production of polyunsaturated aldehydes (PUAs) in coastal diatoms, key compounds for defense 🛡️ and ecosystem interactions 🌊.
🔗 doi.org/10.1016/j.ma...