Sign in

Shahar Chaikin

@shaharchaikin.bsky.social
276 followers 526 following 91 posts

PhD | Marine Ecologist | Postdoctoral Fellow @mncn-bgcg.bsky.social | Effects of Climate Change on Marine Biodiversity | he/ him | Dad

PostsRepliesMedia
Shahar Chaikin @shaharchaikin.bsky.social · 15/09/2026
Happy to present at the NOAA Science Seminar Series this Thursday! 🌊🐟 I'll be diving into how chronic warming and marine heatwaves differentially reshape marine populations and what that means for transboundary conservation. 📅 Thursday, September 17 ⏰ 18:00 CEST 📍 Registration details below!
star.nesdis.noaa.gov
Center for Satellite Applications and Research - NOAA / NESDIS / STAR
STAR translates raw satellite data into critical information needed to inform the public and safeguard the environment across the country and around the world.
110
Shahar Chaikin @shaharchaikin.bsky.social · 01/09/2026
To all freshwater biogeographers and ecologists out there! A new paper led by @gvagenas.bsky.social #SDMs #Freshwater #Fish #ClimateChange #Methods
onlinelibrary.wiley.com
Hierarchical Modelling of Aquatic Species Distributions
Aim Species Distribution Models (SDMs) have traditionally been developed in a terrestrial context, and their application to aquatic ecosystems presents unique challenges. These include predicting sp...
001
Shahar Chaikin @shaharchaikin.bsky.social · 24/08/2026
Does marine biodiversity always decline with depth? Our new paper, led by Inbar Dahan, reveals divergent species richness patterns and their proximate mechanisms across Red Sea fishes, corals, and sponges. Discover how abundance shapes these trends! 🔓 Open access link in the last thread!
120
Shahar Chaikin @shaharchaikin.bsky.social · 29/07/2026
Thank you @britishecologicalsociety.org for the opportunity to communicate our findings through your dedicated podcast!
030
Shahar Chaikin @shaharchaikin.bsky.social · 06/07/2026
Read our #animalecology in focus blog post! Who is next in line? Predicting which Red Sea fish will invade the Mediterranean Sea Thank you @animalecology.bsky.social for this opportunity! #biologicalinvasions #tropicalfish #rangeexpansion #SuezCanal
animalecologyinfocus.com
Who is next in line? Predicting which Red Sea fish will invade the Mediterranean Sea
This blog post is provided by Shahar Chaikin and tells the #StoryBehindThePaper for the article, “Native habitat affinities predict fish invasions with post-invasion habitat shifts”, which was rece…
020
Shahar Chaikin @shaharchaikin.bsky.social · 02/07/2026
Can we predict which fish will become an invader? 🐟 Our new paper in @animalecology.bsky.social uses video surveys to track 179 fish populations across the Red Sea and Mediterranean. We found that the biggest predictor of invasion is whether a fish can leave coral habitats behind! 🪸 #FishEcology
192
Reposted by Shahar Chaikin
Lesley Lancaster @lancasterlt.bsky.social · 01/06/2026
Funding-guaranteed PhD position in plant ecosphysiology and macroecology: data synthesis and tropical fieldwork opportunities. www.findaphd.com/phds/project...
findaphd.com
Plant thermal tolerances across scales: from a single tree to global trends at University of Aberdeen on FindAPhD.com
PhD Project - Plant thermal tolerances across scales: from a single tree to global trends at University of Aberdeen , listed on FindAPhD.com
0913
Shahar Chaikin @shaharchaikin.bsky.social · 10/05/2026
📢 New Opportunity: Join the Biodiversity Futures Working Groups! 🌍 The @miguelbaraujo.bsky.social lab is excited to announce a call for experts to help shape the future of biodiversity science. We are looking for collaborative minds! Read more and apply: www.maraujolab.eu/2026/05/09/2...
maraujolab.eu
2026 Announcement - Biodiversity Futures Working Groups -
At a glance Up to €10,000 in catalytic support per working group Two in-person meetings (3-5 days each) […]
020
Reposted by Shahar Chaikin
Jérémy Carlot @jerem-carlot.bsky.social · 07/04/2026
Wrapping up the Easter holidays with a new paper in #EcologyLetters. Our latest study shows how ocean acidification reshapes temperate marine communities and their ecosystem functioning 🌐🌊🦑🧪👇🧵

 onlinelibrary.wiley.com/doi/10.1111/...

 @sorbonne-universite.fr @imev-mer.fr @icmcsic.bsky.social
1154
Shahar Chaikin @shaharchaikin.bsky.social · 06/04/2026
Important new contribution to the study of species range shifts #rangeshifts #redistributions #climatechange
pnas.org
Species range shifts often speed ahead of their modeled climatic niches | PNAS
Anticipating how species distributions will shift with climate change is key for biodiversity conservation and management. Commonly, species’ range...
051
Shahar Chaikin @shaharchaikin.bsky.social · 03/04/2026
Our research on ocean warming and fish populations just made it into @lemonde.fr 🌊 #MarineScience #ClimateChange #Fisheries @miguelbaraujo.bsky.social @jdgonzalezt.bsky.social
lemonde.fr
With average temperatures above 21°C, oceans approach new heat records
Surface waters are now nearly 0.5°C warmer than the average estimated between 1993 and 2022, according to data from the European Copernicus program.
1100
Shahar Chaikin @shaharchaikin.bsky.social · 02/04/2026
Happy to share my recent 🎧 interview on Ecoshock Radio! We discussed our new findings on how long-term and short-term ocean warming is impacting fish biomass across the Northern Hemisphere. Take a listen here: www.ecoshock.net/downloads/ES... #ECOSHOCK #podcast #climate #fisheries #marine #ecology
141
Shahar Chaikin @shaharchaikin.bsky.social · 18/03/2026
Our recent paper on warming impacts on fish biomass is featured in @euronews.com #ClimateChange #MarineEcology #OceanWarming #Fisheries @miguelbaraujo.bsky.social @mncn-bgcg.bsky.social @jdgonzalezt.bsky.social @csic.es @mncn-csic.bsky.social
euronews.com
Europe’s warming oceans are losing fish faster than we thought
Researchers warn against falling for 'fool's gold' of rising fish numbers spurred by marine heatwaves.
281
Shahar Chaikin @shaharchaikin.bsky.social · 11/03/2026
Our paper on ocean warming & fish biomass made headlines—but now it needs to make an impact. 🌊🐟 Science matters more if it leads to action. I’m looking to connect with fisheries managers & policymakers. Who can help bridge this gap? Please share or connect us! #SciPolicy #MarineEcology #SciComm
262
Shahar Chaikin @shaharchaikin.bsky.social · 09/03/2026
Happy to share News and Views in @natecoevo.nature.com about our paper: www.nature.com/articles/s41... Thank you, Martin Marzloff, for highlighting this work. #climatechange #heatwaves #fish @miguelbaraujo.bsky.social @jdgonzalezt.bsky.social
nature.com
Range-edge effects of marine heatwaves - Nature Ecology & Evolution
An analysis of hundreds of fish biomass surveys shows that warmer years combined with marine heatwaves can enhance regional population abundances in the cold edges of species’ biogeographical distribu...
170
Shahar Chaikin @shaharchaikin.bsky.social · 25/02/2026
A huge thank you to @efe.com for their fantastic coverage of our new paper in Nature Ecology & Evolution today! 🌊🐟 efe.com/medio-ambien... @mncn-csic.bsky.social @mncn-bgcg.bsky.social @miguelbaraujo.bsky.social @jdgonzalezt.bsky.social
efe.com
El calentamiento oceánico provoca un descenso de la cantidad de peces del 20% anual - EFE
El calentamiento crónico y prolongado que sufren los mares está detrás del descenso de casi el 20 por ciento anual de la biomasa de peces.
133
Shahar Chaikin @shaharchaikin.bsky.social · 25/02/2026
Thank you to @theguardian.com for doing such a fantastic job communicating our findings to the public today. You can read their coverage here: @mncn-csic.bsky.social @miguelbaraujo.bsky.social @csic.es www.theguardian.com/environment/...
theguardian.com
Chronic ocean heating fuels ‘staggering’ loss of marine life, study finds
Fish levels fall by 7.2% with as little as 0.1C of warming per decade, northern hemisphere research shows
032
Shahar Chaikin @shaharchaikin.bsky.social · 25/02/2026
Are warmer oceans good or bad for #fish? 🐟 The answer is a dangerous paradox. Our new paper in @natecoevo.nature.com shows how marine heatwaves may create “fake” fish gains that mask a large-scale crash. Read our findings here: www.nature.com/articles/s41... @mncn-csic.bsky.social #ClimateChange
1114
Reposted by Shahar Chaikin
Juan Carvajal-Quintero @juancarvq.bsky.social · 19/02/2026
New paper out examining fish food web degradation in the Anthropocene. We show the structure of aquatic food webs are changing-- even when species richness doesn’t. These signals are strongly associated with decreases in body size within fish communities. www.science.org/doi/10.1126/... 🌐🐠🐡🦈🐟
science.org
Degradation of fish food webs in the Anthropocene
The decrease in body size driven by the selective species turnover is widely altering fish food web topology and function.
011566
Reposted by Shahar Chaikin
Coral City Camera @coralcitycamera.bsky.social · 09/02/2026
We are proud to unveil the world’s longest underwater timelapse, starting May 1st 2023 and running 1,000 days through January 28, 2026. This 10fps period covers summer 2023’s coral bleaching mortality event, but then recovering and growing through ‘24 & ‘25 into ‘26 #coralcitycamera
14646201
Shahar Chaikin @shaharchaikin.bsky.social · 28/01/2026
We should not isolate #range_expansions and #Introductions! 🌊🦀 "An invasion is an invasion". Whether a species arrives via ballast water or a warming-driven poleward shift, it is a historical newcomer to that community. Essential reading for anyone in #Biogeography or #InvasionEcology
royalsocietypublishing.org
The concept of biological invasions in the Anthropocene: introductions and range expansions
Abstract. In the warming world of the Anthropocene, as well as classically, biological invasions include introductions (introduced species) and range expan
130
Shahar Chaikin @shaharchaikin.bsky.social · 27/01/2026
The thermal position of marine population matters for #kelp persistence in the face of #marineheatwaves Warm-edge populations of foundation species suffer more from acute short-term warming compared to cold-edge ones. #goldenkelp #climatechange onlinelibrary.wiley.com/doi/10.1111/...
130
Shahar Chaikin @shaharchaikin.bsky.social · 21/01/2026
Israel’s gov considers quitting the Paris Agreement, calling the climate crisis a "hoax". The Trump effect is sadly taking us down... So much lack of responsibility and #egoism May this government fall soon. #ClimateChange #MarineScience #ocean #Research #Israel #climate_crisis
120
Shahar Chaikin @shaharchaikin.bsky.social · 10/01/2026
It was pleasure attending the TIBS conference in Aarhus! I had some fantastic discussions with researchers on how we can better quantify the impacts of climate change on marine species. Leaving with new ideas and collaborations. 🌊🐟 @tibsaarhus2026.bsky.social #oceans #fish @biogeography.bsky.social
0163
Shahar Chaikin @shaharchaikin.bsky.social · 07/01/2026
📢 We’ve published a comprehensive depth dataset for 230 fish species in the Eastern Med & Northern Red Sea. Derived from systematic stereo-BRUVs surveys, it includes: Modeled central depth niches🔹 Abundance🔹 Body size🔹habitats (link in thread below) #data #fishes #marine #invasions #depth #aliens
100
Shahar Chaikin @shaharchaikin.bsky.social · 06/01/2026
Does ocean warming mean fewer fish? It’s complicated. 🐟 We analyzed 33k+ populations and found that while long-term warming drives declines, heatwaves create sharp "winners" and "losers" at range edges. 🗓️ Fri, Jan 9 | 14:10 - 15:40📍Session: Aquatic Biogeography #TIBS2026 @miguelbaraujo.bsky.social
050
Shahar Chaikin @shaharchaikin.bsky.social · 10/12/2025
Another successful lab retreat at @miguelbaraujo.bsky.social Lab! Thanks everybody for providing important, instructive comments on binding fish biomass data with species-level thermal limits. This project is about to be very interesting. #macroecology #macrophysiology #climatechange
010
Shahar Chaikin @shaharchaikin.bsky.social · 07/12/2025
It took twenty years for the horizon to disappear. I made this to capture the specific sadness of watching the open fields of my childhood turn into concrete. It wasn’t just a change in scenery; it felt like the world actually got smaller. 🧵 #Urbanization #Nostalgia #ShiftingBaselineSyndrome
120
Reposted by Shahar Chaikin
Marten Winter @smartenwinter.bsky.social · 30/09/2025
#iDiv sabbatical @miguelbaraujo.bsky.social kicks of the annual conference of @idiv-research.bsky.social w an intro into modelling under #climatechange & a very interesting intro how to incorporate network properties into it #iDivconference2025
0144
Shahar Chaikin @shaharchaikin.bsky.social · 06/11/2025
Check this out! I took one of my old research studies and turned it into an engaging, public-friendly animation. Science for everyone! 🧠 #spacefortime #depthredistributions #warmingimpacts #fish youtu.be/I5C22DhwRDM?...
youtu.be
The Great Underwater Redistributions
YouTube video by shahar chaikin
000
Shahar Chaikin @shaharchaikin.bsky.social · 06/10/2025
I've been debating for a long time whether or not to share this publicly. I'm doing it now because I believe that only by sharing the raw, personal trauma may some understand that this isn't politics—it's about the basic right to life and dignity. #TwoYearsLater #CollectiveTrauma #October7th
120
Shahar Chaikin @shaharchaikin.bsky.social · 06/10/2025
"don't look up" #globalchange www.nature.com/articles/s41...
nature.com
Six actions for ecologists in times of planetary crisis - Nature Ecology & Evolution
Nature Ecology & Evolution - Six actions for ecologists in times of planetary crisis
000
Shahar Chaikin @shaharchaikin.bsky.social · 03/10/2025
Happy to have attended the @mncn-bgcg.bsky.social department gathering in El Ventorrillo! ☀️ It was inspiring to hear about the high-quality research others are doing, sparking ideas for future collaborations. I was also happy to get the chance to present my own research interests and recent work.
010
Shahar Chaikin @shaharchaikin.bsky.social · 14/08/2025
Nature is incredible (and sometimes incredibly painful). Physalia physalis #Asturias
000
Shahar Chaikin @shaharchaikin.bsky.social · 29/07/2025
New data on 2023's marine heatwaves is alarming. Oceans hit unprecedented temps & durations, with some events so extreme they're considered once-in-centuries occurrences. It's a clear signal that warming climate impacts are accelerating. www.science.org/doi/10.1126/... #unprecedented #oceanwarming
science.org
Record-breaking 2023 marine heatwaves
The year 2023 witnessed an extraordinary surge in marine heatwaves (MHWs) across Earth’s oceans, setting new records in duration, extent, and intensity, with MHW activity totaling 53.6 billion °C days...
021
Reposted by Shahar Chaikin
Asociación Española de Climatología @aeclim.org · 10/07/2025
9 de cada 10 muertes en Madrid por la reciente ola de calor se atribuyen al cambio climático climatica.coop/muertes-madr...
climatica.coop
9 de cada 10 muertes en Madrid por la reciente ola de calor se atribuyen al cambio climático - Climática, el medio especializado en clima y biodiversidad
El cambio climático estuvo detrás de casi 400 muertes en Madrid y Barcelona ocurridas durante la primera ola de calor del verano, según un estudio de atribución rápido.
021
Shahar Chaikin @shaharchaikin.bsky.social · 09/07/2025
Looking forward to reading this one in detail! #marineheatwaves #biodiversity www.nature.com/articles/s44...
nature.com
Marine heatwaves as hot spots of climate change and impacts on biodiversity and ecosystem services - Nature Reviews Biodiversity
Marine heatwaves (MHWs) have become more intense and widespread globally, affecting species, ecosystems and people. After summarizing how and why MHWs are changing, this Review explores these impacts ...
000
Shahar Chaikin @shaharchaikin.bsky.social · 04/07/2025
PhD opportunity for enthusiastic ecologists curious about modeling species abundance @miguelbaraujo.bsky.social Lab. #PhD #abundance #biogeography www.maraujolab.eu/2025/07/04/p...
maraujolab.eu
PhD candidate in species abundances modelling -
Project Description Understanding species abundance patterns is essential to addressing fundamental questions in macroecology and biogeography, specifically about […]
000
Shahar Chaikin @shaharchaikin.bsky.social · 24/06/2025
Looking for a nice underwater picture of European sprat (Sprattus sprattus) to be used in a publication with full credit 🙏 #fish #underwater #fishphoto #sprat #EuropeanSprat #SprattusSprattus #Ichthyology
000
Shahar Chaikin @shaharchaikin.bsky.social · 18/06/2025
Join us! Postdoc opportunity for marine ecologists that closely match the requirements. @miguelbaraujo.bsky.social www.maraujolab.eu/2025/06/18/p...
maraujolab.eu
Postdoctoral Researcher in Spatial Planning for Marine Protected Areas -
Postdoctoral Researcher in Spatial Planning for Marine Protected Areas Candidate Profile: Educational and Research Expertise: Candidates should possess a PhD in ecology, marine biology, oceanography,...
020
Shahar Chaikin @shaharchaikin.bsky.social · 07/06/2025
Presented my research this week on the long-term and short-term impacts of #climatechange on #fish biomass! A huge thanks to @sibecol.bsky.social for the platform and for fostering connections with inspiring researchers across the Iberian Peninsula and beyond. #Ecology @mncn-bgcg.bsky.social
The oceans' seabed is not safeguarded from warming
060
Reposted by Shahar Chaikin
Federico Riva @rivaecology.bsky.social · 03/06/2025
Our viewpoint made the cover of BioScience! Beautiful picture from Jean Marie Twambaze academic.oup.com/bioscience/a...
021
Reposted by Shahar Chaikin
Global Change Biology @globalchangebio.bsky.social · 27/05/2025
Global Decline in the Size of Sea Turtles 🔗 buff.ly/QKx3Sm8
033
Shahar Chaikin @shaharchaikin.bsky.social · 26/05/2025
Had a relaxing and insightful week at @miguelbaraujo.bsky.social lab retreat! 🌿 We presented our studies and gave each other feedback, which was super helpful. Plus, we got to enjoy some beautiful time in nature. Feeling refreshed and full of new ideas! @mncn-bgcg.bsky.social
020
Shahar Chaikin @shaharchaikin.bsky.social · 15/05/2025
Super interesting papers are about to come out now --> BioTIME 2.0 is published- Huge database on temporal biodiversity change Amazing work by Dornelas, her team, and authors willing to share their fieldwork data #biodiversity #macroecology #BioTIME onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
BioTIME 2.0: Expanding and Improving a Database of Biodiversity Time Series
Motivation Here, we make available a second version of the BioTIME database, which compiles records of abundance estimates for species in sample events of ecological assemblages through time. The up...
020
Reposted by Shahar Chaikin
Jonathan Lenoir 🌳🌲🌴 @jonlen.bsky.social · 09/05/2025
In response to climate change #CC, #species #shift in many dimensions, moving in space along many climatic clines, including #microclimatic ones (horizontally & vertically) & adjusting their #phenology & #behaviour in time 🧪🌐🌍🍁🌳🌲🌴🦔🦅🦎🐝🦐🦑🐠🦈🐋 @cp-trendsecolevo.bsky.social shorturl.at/W9fGd
13013
Reposted by Shahar Chaikin
The Conversation U.S. @us.theconversation.com · 04/05/2025
Claims by the Trump administration that marine protected areas are a heavy-handed restriction on the U.S. fishing industry do not hold water. Science shows these refuges for sea life help local economies and allow fish populations to thrive By @whysharksmatter.bsky.social
buff.ly
Trump is stripping protections from marine protected areas – why that’s a problem for fishing’s future, and for whales, corals and other ocean life
America’s marine protected areas help fish populations thrive. Trump’s plan to open them to industrial fishing may ultimately harm the fishing industry itself.
57440
Reposted by Shahar Chaikin
Nature @nature.com · 02/05/2025
US President Donald Trump’s proposed budget for fiscal year 2026 calls for unprecedented cuts to scientific agencies that, if enacted, would deal a devastating blow to US science, policy specialists say. go.nature.com/4jYv3IP
go.nature.com
Trump proposes unprecedented budget cuts to US science
Huge reductions, if enacted, could have ‘catastrophic’ effects on US competitiveness and the scientific pipeline, critics say.
812269
Shahar Chaikin @shaharchaikin.bsky.social · 01/05/2025
Looking forward to reading this one: "North American bird declines are greatest where species are most abundant" www.science.org/doi/10.1126/... @science.org
science.org
North American bird declines are greatest where species are most abundant
Efforts to address declines of North American birds have been constrained by limited availability of fine-scale information about population change. By using participatory science data from eBird, we ...
000
Shahar Chaikin @shaharchaikin.bsky.social · 30/04/2025
Looking forward to the first Range Edge Dynamics working group meeting @idiv-research.bsky.social in early May! 🦋🌍 We will be working on the demographic consequences of range shifts”. #Biodiversity #ClimateChange @bugecology.bsky.social @kemarshall.bsky.social www.idiv.de/research/sdi...
idiv.de
sRED | iDiv
083