New paper alert!!! 🚨📃🚨 Led by the awesome Sarah Magozzi and with @clivetrue.bsky.social and many other data contributors, we test isoscape construction in the Med using extensive compiled opportunistic data (1000's of measurments) doi.org/10.1016/j.po...
Jon Kuntz, PhD 🦈
@sharkeye.bsky.social
Shark eyes and stable isotopes | Lecturer UC Merced | Alaska Department of Fish & Game 🦀 | AK Sea Grant State Fellow | (He/Him)
stunning paper highlighted by @profcolinbean.bsky.social www.cambridge.org/core/journal... Time to change our thinking about fish distributions? This is amazing. Did stone age fishers introduce fishes to Scandinavian mountain lakes 5000 ybp? Were they doing the same elsewhere in Europe?
The introduction of fish to the Scandinavian mountains by hunter-fisher-gatherers 5000 BC | Antiquity | Cambridge Core
The introduction of fish to the Scandinavian mountains by hunter-fisher-gatherers 5000 BC
cambridge.org
In our Viewpoint (onlinelibrary.wiley.com/doi/abs/10.1...) we synthesize the gametic definition (outlined by Janicke et al below) and other definitions of sex (e.g., multivariate definition). We contend that is NO consensus on “biological sex” (maybe a consensus isn’t actually necessary…)
There is No Consensus on Biological Sex
At this critical moment when misinformation about sex is being applied to policy globally, scientific clarification on the definition of biological sex is valuable. Here, we evaluate the primary appr...
onlinelibrary.wiley.com
In a new #Viewpoint we argue that the binary definition of #BiologicalSex based on gamete size is a scientifically robust framework that is entirely compatible with the diversity of sexual phenotypes and human gender identities. onlinelibrary.wiley.com/doi/10.1111/...
The two body problem is so hard in science… like what do you mean I’m in my mid 30’s and might have to live halfway around the world from my partner while we both do postdocs?
Algae are prolific producers of oxygen (and consumers of carbon dioxide), en masse producing a huge proportion of the oxygen we breathe, which means that the greening of the Reflecting Pool might be the most pro-climate thing Trump has ever done.
Mona Khalil, Lebanon’s most well-known sea turtle conservationist, died of her wounds today after being injured by an Israeli strike I feel sick
Mona Khalil spent over 20 years protecting sea turtles on Mansouri Beach. After she was injured in an Israeli attack, activists continued her initiative at Rmeileh Beach, where they protected the first loggerhead nest of 73 eggs on Thursday. youtu.be/fbBKzK4JNRc
Disentangling shared and divergent life histories with age-based eye lens isotope records in a coastal sharK 🦑🌎🐟🦈 www.tandfonline.com/doi/pdf/10.1...
Favorite part of my PhD finally published 🦈👁️! 🦑🌎🧪 Disentangling shared and divergent life histories with age-based eye lens isotope records in a coastal shark www.tandfonline.com/doi/full/10....
Disentangling shared and divergent life histories with age-based eye lens isotope records in a coastal shark
Documenting lifetime diet preference and habitat use is critical for understanding how long-lived, mobile species respond to ecological change, yet such data remain sparse – particularly for compar...
tandfonline.com
New #OA article in @globalchangebio.bsky.social! Juvenile Chinook salmon split into distinct migratory 'groups'. We used #otolith and eye lens #isotopes to identify the origin and migration routes of salmon, and the frequency of each 'group' at sequential sampling points thru the life cycle. 1/3
🚨New 🦈 paper🚨 by Jack Elstner and team shows how nursery associated white sharks around San Diego responded to an anomalous tropical storm. Add extreme weather to the lengthy list of dynamic drivers of shark nursery function ⛈️ doi.org/10.1186/s404...
A rare tropical storm event drives partial nursery evacuation by juvenile white sharks, followed by rapid aggregation reformation - Movement Ecology
Movement Ecology - Extreme weather events, such as tropical storms, can pose profound disruption to nearshore marine environments. Although coastal ecosystems are particularly vulnerable to storm...
doi.org
Cool paper alert. Was trying to model the thermal performance curves of several farmed seaweed species and ran across this awesome, theoretical unifying paper: “A universal thermal performance curve arises in biology and ecology” www.pnas.org/doi/10.1073/...
Check out our new paper on cooperating bacteria led by @janamassing.bsky.social w/ @thilogross.bsky.social and @akfbio.bsky.social, where we explore the costs and benefits of metabolitic trade on stability in non-spatial and spatial contexts... exciting! royalsocietypublishing.org/rsif/article...
Generalized dynamics of cross-feeding bacteria
Abstract. Bacterial cooperation involves the exchange of metabolites, which can range from costless byproducts of metabolism to intentionally produced and
royalsocietypublishing.org
Very happy that our paper on regional-scale cold-water lake ecosystem functioning, examined using over 5000 salmonid isotope measurements, is out now open access in @aslo.org Limnology & Oceanography! aslopubs.onlinelibrary.wiley.com/doi/10.1002/...
Regional ecosystem responses to environmental drivers in cold‐water lakes evaluated using stable isotopes of salmonid fishes
Diverse environmental drivers influence food web energy and nutrient flows, a key ecosystem function, yet their relative importance remains poorly known. We compiled thousands of bulk stable isotope ....
aslopubs.onlinelibrary.wiley.com
Sun, Y., Ishikawa, N.F., Ogawa, N.O. et al. Carbon isotopic changes of 16 proteinogenic amino acids during trophic transfer in a cultured marine consumer. Prog Earth Planet Sci 13, 9 (2026). doi.org/10.1186/s406... #stableisotopes
Carbon isotopic changes of 16 proteinogenic amino acids during trophic transfer in a cultured marine consumer - Progress in Earth and Planetary Science
Stable carbon isotopic compositions of amino acids (δ13CAA) in organisms potentially record information on carbon sources and flow in food webs. In this study, we report δ13C values of 16 proteinogeni...
doi.org
The morphological evolution and phylogenetic diversity of skates and rays along the marine coastline of Mexico are linked to species diversity and extinction threats 🦑🌿🐟🦈 link.springer.com/article/10.1...
The morphological evolution and phylogenetic diversity of skates and rays along the marine coastline of Mexico are linked to species diversity and extinction threats - Hydrobiologia
The understanding of the interaction between morphological diversity, phylogenetic history, and biodiversity at various temporal and spatial scales is crucial for conservation of communities and speci...
link.springer.com
New #OA paper in Ecological Informatics comparing automated methods for provenance assignment using chronological chemical records deposited into archival structures such as #otoliths, #lenses, #statoliths. Our focus was on #salmon but it has much broader application. doi.org/10.1016/j.ec...
My co-authors and I are happy to present our framework "Collective Intelligence as Collective Information Processing (CIP)." Here we propose decomposing different information processing mechanisms to unify disparate phenomena traditionally classified as "collective intelligence."
Beneath the surface: a deep dive into the behaviour and interactions of elasmobranchs in a tropical South Atlantic archipelago 🦑🌿🐟🦈 link.springer.com/article/10.1...
Beneath the surface: a deep dive into the behaviour and interactions of elasmobranchs in a tropical South Atlantic archipelago - Environmental Biology of Fishes
Sharks and rays face significant population declines due to overfishing, habitat degradation, and climate change. Their behavioural patterns, such as feeding, territoriality, and interactions with oth...
link.springer.com
This is where I live!
🧪🛰️🌍🌊💨🧊 #highlatitudedust activity today in the Copper river delta in #Alaska. Nice successive views of the event by VIIRS-NOAA21/20/SNPP it gives an appreciation of the plume evolution with details that GOES can't match. Very cloudy , difficult scene and webcams nearby were not operating.
In my first Editorial as Associate Editor for @conphysjournal.bsky.social, we help combat this lack of training by providing some "tips and tricks" for writing constructive peer reviews, based on our collective experiences as editors for multiple scientific journals.
Tips and tricks for writing constructive peer reviews
Peer review has been the cornerstone of scientific inquiry for centuries and is considered the backbone of scientific quality and rigour (Spier, 2002). Des
academic.oup.com
After taking (too) many pictures of scales we finally have our new study out: Identifying escaped farmed salmon from scales using deep learning: academic.oup.com/biomethods/a... The model works well and covers the major Atlantic salmon rivers in Norway. Could be adpated to other fish and places!
Huzzah! After a lot of work, I'm happy to share that the results of my first chapter have been published and are available for your perusal. In this paper, I was interested in understanding how characteristics of urban environments influence the diel activity of cats academic.oup.com/jue/article/...
Housing proximity and vegetation cover affect diel activity patterns of domestic cats (Felis catus) in regionally protected shorelines
Abstract. Free-roaming domestic cats (Felis catus) are among the most impactful non-native species globally, causing the extinction of 63 endemic vertebrat
academic.oup.com
New pre-print with @psmaldino.bsky.social on an agent-based model of propaganda in online spaces. Using the voter model from physics, we simulate networks with stubborn agents (zealots) who do not change their opinions, asking about their optimal positioning for influencing the network.
Inter-method differences (SIMS vs. IRMS) in oxygen isotope fractionation: insights from Chinook salmon otoliths #stableisotopes www.sciencedirect.com/science/arti...
Inter-method differences (SIMS vs. IRMS) in oxygen isotope fractionation: insights from Chinook salmon otoliths
Stable oxygen isotopes (δ18O) in biogenic carbonates serve as a valuable proxy for reconstructing thermal history. Fish otoliths (ear stones) are part…
sciencedirect.com
Fine‐scale reconstruction of pelagic fish migration by iso‐logging of eye lens - Matsubayashi - Methods in Ecology and Evolution #stableisotopes besjournals.onlinelibrary.wiley.com/doi/full/10....
Fine‐scale reconstruction of pelagic fish migration by iso‐logging of eye lens
Understanding lifetime space use by pelagic animals is pivotal for ecology and fisheries management, but electronic tags are costly, labour-intensive and rarely able to capture juvenile movement. ...
besjournals.onlinelibrary.wiley.com
New paper where we explore how the dynamics of food webs can be explored when populations are ‘distilled’ to high and low states, or Boolean switches… Somehow this leads to a discussion involving Otodus megalodon :D nsojournals.onlinelibrary.wiley.com/doi/10.1002/...
Distilling food web dynamics: top–down and bottom–up drivers of extinction and trophic cascades
Quantifying population dynamics is a fundamental challenge in ecology and evolutionary biology, particularly for species that are cryptic, microscopic, or extinct. Traditional approaches rely on cont...
nsojournals.onlinelibrary.wiley.com
So delighted to have worked with Drs Christine France and Julianne Sarancha on this project. With deer samples, we created isoscapes (Sr, O, and S) for the state of Virginia. Potentially hella useful for archaeology in the region. 🏺🧪 www.tandfonline.com/doi/full/10....
tandfonline.com
"We found that despite the enormous spatial range of data, both pPOM and sPOM became 2.1‰ and 2.2‰ more 13C-depleted per decade, respectively, with parallel decreases in the δ13C values in consumers" journals.plos.org/plosone/arti...
Trophic niche variation across the pan-Arctic coastal continuum
We analyzed stable carbon and nitrogen isotope values (δ13C and δ15N, respectively) for pan-Arctic coastal primary producers and consumers to detect large-scale regional trends both temporally and spa...
journals.plos.org
The earliest appearance of gigantic lamniform #sharks has now been pushed back by ~15 Ma (upper Aptian, ~115 Ma) with the discovery of enormous cardabiodontid shark remains from northern Australia.🦈🧪 www.nature.com/articles/s42...
Early gigantic lamniform marks the onset of mega-body size in modern shark evolution - Communications Biology
The earliest appearance of mega-body size in sharks is pushed back by 15 million years with the discovery of new fossils from Northern Australia. Using a comprehensive dataset of living sharks to esti...
nature.com
New #sharkscience from Hilary Lewis and others: Challenging traditional methods of age estimation: elemental and isotopic characterisation of speartooth shark Glyphis glyphis vertebrae. www.int-res.com/abstracts/me... @iucnshark.bsky.social @austsocfishbiol.bsky.social @mickgrant.bsky.social
int-res.com