Joan Navarro

Today, presenting the #ALLIES project together with Tomas Montalvo (@salutpublicabcn.bsky.social),also with the @isglobal-bsky.social team, to the students of the Master’s in Biodiversity at the @ub.edu during one of their urban ecology field trips.

ICM-CSIC
Joan Navarro

Nesting the city: long-term spatiotemporal dynamics of nest distribution in a synanthropic gull within a high density European city - Urban Ecosystems Urbanization alters biodiversity by displacing some species while favouring others that exploit human-modified environments. The Yellow-legged gull (Larus michahellis) is a successful urban colonizer ...

The Three Magic Kings brought a new study from #BCNGULLS👑🏙️🎉

We studied the nesting patterns of yellow-legged gulls over 12 years of data in Barcelona! 🪺🐦📈

@salutpublicabcn.bsky.social @icmcsic.bsky.social @igue-aeet.bsky.social
@imares-group.bsky.social

link.springer.com/article/10.1...

🌊✨ From @iMARES_group, we wish you a Merry Christmas and a 2026 full of ocean discoveries!
We’ll keep advancing knowledge to conserve marine ecosystems and ensure their sustainable use.
Thank you for being part of this mission!

#MerryChristmas #Happy2026 #BlueScience

@icmcsic.bsky.social

📄 Want to dive deeper?
🔗Read the full article in Forest Ecology and Management: www.sciencedirect.co...

📢 This new paper, co-authored by @carlestobella.bsky.social and @jnavarro.bsky.social, isn’t strictly about marine science, but their integrative perspective helps us connect land and sea: resilience and trophic dynamics matter everywhere.

@icmcsic.bsky.social
@mediambientudg
@udgrecerca

🚨 New Research Alert!
Urban air pollution harms wildlife too. A study in Journal of Hazardous Materials shows yellow-legged gull chicks in Barcelona act as sentinels for air quality. 🐦🌆

🔗 https://doi.org/10.1016/j.jhazmat.2025.140518
#OneHealth

@icmcsic.bsky.social 
@jnavarro.bsky.social

@icmcsic.bsky.social

Interested in spatial ecology & One Health in urban gulls?
🧪 Join us at @imares-group.bsky.social @icmcsic.bsky.social as a #JdC postdoc in the #ALLIES project!
📅 Apply by Dec 10
📩 Contact: joan@icm.csic.es
🔗 See the call: acortar.link/yhYLRt
#Postdoc #AppliedEcology #UrbanEcology #OneHealth

🚀 PhD calls at the ICM-CSIC — for early-career researchers!

🐦 ALLIES: Urban ecosystem, One Health, tracking wildlife pathogens & pollutants

🌋AVATAR: Seismic + geodynamics of Atlantic margin volcano-tectonic systems

More info👉 https://www.icm.csic.es/en/job-offers

Co-funded by the @fondoseuropeoses.bsky.social and the @fbiodiversidad.bsky.social through the #Pleamar programme, the #COTI project advances the conservation of deep-sea sharks in the Mediterranean.

#FEMPA #FondosEuropeos
@icmcsic.bsky.social
@ZooBarcelona
@confrariapescadorsblanes

2️⃣ Installation of electronic tracking devices

#COTI #FEMPA #FondosEuropeos #Pleamar
@fondoseuropeoses.bsky.social
@fbiodiversidad.bsky.social
@confrariapescadorsblanes
@ZooBarcelona

3️⃣ Release back into the sea

🔁 Tracking begins now!

#COTI #FEMPA #FondosEuropeos #Pleamar
@fondoseuropeoses.bsky.social
@fbiodiversidad.bsky.social
@confrariapescadorsblanes
@ZooBarcelona

Cofinanciado por @fondoseuropeoses.bsky.social y la @fbiodiversidad.bsky.social a través del programa #Pleamar, el proyecto #COTI avanza en la conservación de los tiburones🦈 de profundidad en el Mediterráneo.

#FEMPA #FondosEuropeos
@icmcsic.bsky.social
@ZooBarcelona
@confrariapescadorsblanes

2️⃣ Instalamos dispositivos electrónicos de seguimiento

#COTI #FEMPA #FondosEuropeos #Pleamar
@fondoseuropeoses.bsky.social @fbiodiversidad.bsky.social
@ZooBarcelona

Trophic niche partitioning between the white shark (Carcharodon carcharias) and the shortfin mako (Isurus oxyrinchus) in the central Mediterranean Sea Context Large predatory sharks such as the white shark (WS) and shortfin mako (SMK) have been historically depleted to Critically Endangered levels in the Mediterranean Sea. Despite their low abundanc...

📢 New paper in Wildlife Research!

@elenafcorr.bsky.social, PhD researcher at group, co-authors a study revealing how juvenile white sharks 🦈 & shortfin makos coexist in the Mediterranean by dividing their trophic niches.

📖 Read here 👉 doi.org/10.1071/WR25...
@icmcsic.bsky.social

#sharks

📍Fieldwork day in #ALLIES project: post-breeding colony check.

No gulls remained, but we recovered the GPS from a yellow-legged gull tagged in June that sadly died.

We keep monitoring environmental health to better understand urban ecosystem dynamics 🌍🩺.

@icmcsic.bsky.social

🎣Last week blue shark tagging was a big hit!
We tagged 14 individuals and got fin samples and cloacal swabs for diet 🍽️ and genetic studies🧬

This is part of the #COTI project🦈, funded by #FEMPA, #FondosEuropeos and #Pleamar
@fbiodiversidad.bsky.social @icmcsic.bsky.social @jnavarro.bsky.social

🎓4-year PhD📍 Barcelona
🔬 Urban, animal ecology, environmental science, and public health!
🌍 Interdisciplinary team
🎁 GPS tracking + lab + modelling
📅 Deadline for applicants: 15/10/2025
📩joan@icm.csic.es, victormartin@icm.csic.es
More info: acortar.link/nNqaop

The second chapter of my Ph.D. is out!
🐟 We evaluated how oceanography and fisheries influence the diet of #swordfish, a key species in Mediterranean and Atlantic foodwebs
🤟 Thanks to coauthors
@jnavarro.bsky.social @joangimenez.bsky.social @martacoll.bsky.social @salvagaviotas.bsky.social

Back from fieldwork on the Chafarinas Islands! Sampling and GPS-tracking of yellow-legged #gulls for #PCBio and #IsoPlastic projects. Grateful to the amazing team! @ebdonana.bsky.social @victormartinvel.bsky.social @jnavarro.bsky.social @sanchezmarta.bsky.social

Tagging with GPSs Audouin gulls at Cullatra Island (Portugal) with Vitor H Pavia (U. Coimbra), will give us good data on the interaction with fisheries, during breeding, migration and wintering

@ebdonana.bsky.social
@catarinalopes90.bsky.social
@jnavarro.bsky.social
@joangimenez.bsky.social

Some picture of the feeding travels of Audouin gulls tagged with GPS at Culatra Island (Portugal). They followed us to Doñana coast….!!!
@sanchezmarta.bsky.social
@ebdonana.bsky.social
@catarinalopes90.bsky.social
@jnavarro.bsky.social

Shearwater team working at Chafarinas Islands to deploy GPS and taking blood and feather samples to study foraging and interaction with fisheries in the project #PlanComplementarioBiodiversidadAndaluz
@catarinalopes90.bsky.social
@jnavarro.bsky.social

Please follow and share this starter pack if you like and/or study gulls or skuas! 🪶 go.bsky.app/Vd8zWBU

Opportunistic Gulls Infected by Antibiotic-Resistant Bacteria Show Contrasting Movement Behaviour | doi.org/10.1002/ece3... | Ecology and Evolution | #ornithology

Opportunistic Gulls Infected by Antibiotic‐Resistant Bacteria Show Contrasting Movement Behaviour Our work addresses a major research gap in animal ecology and movement behaviour by investigating differences between infected and uninfected gull individuals with Escherichia coli. More specifically...

Have you ever wondered if #AMR affects the movement behaviour of the host?🧪🧫

As a first approach, we show how #gulls carrying antibiotic-resistant E. coli show different movement patterns in travelled distances and covered areas! 👇

onlinelibrary.wiley.com/doi/10.1002/...

NEW PAPER from Lambert et al using an energyscape approach to map marine megafauna prey consumption over the entire Mediterranean basin!

Full paper can be found here - www.pnas.org/doi/10.1073/...

🌐🌍🦑🦤🧪🌊🦈

Extinction of experience among ecologists Fieldwork-based research and education in ecology are under multiple threats and are progressively declining. We call for greater attention to this ongoing loss of direct field experience within the ecology community, as it could have widespread consequences for science and education, ultimately hindering efforts to address the ongoing biodiversity crisis.

"There has been a progressive decline in fieldwork-based research and education in ecology over recent decades", precisely at a time when we most urgently need a better understanding of how natural systems work. So sad.

Trends in Ecology & Evolution [paywalled] www.cell.com/trends/ecolo...

Ontogeny of foraging behaviour in an opportunistic gull inhabiting urban marine ecosystems Urbanization affects ecosystems by reducing biodiversity and displacing species from native habitats. While some suffer, others, like urban wildlife, adapt through innovative feeding and behaviours t...

Paper alert 📣 🚨

Feeling old after new year? #BCNGULLS too!

#GPS tracking revealed that gulls at different ages showed different spatial, diet and foraging strategies 👇

doi.org/10.1002/wlb3...

@jnavarro.bsky.social @joangimenez.bsky.social @tmontal.bsky.social @wildlifebiology.bsky.social