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travislongcore.bsky.social
Travis Longcore
@travislongcore.bsky.social
860 followers 330 following 110 posts

Cities & nature, light pollution, species & landscape conservation, maps & spatial analysis 🌎 Adj. Prof. UCLA Inst. of the Environment and Sustainability

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Environmental science 63%
Geography 16%
Posts Replies Media Videos

Reposted by Travis Longcore

kylesaunders.bsky.social
Kyle Saunders @kylesaunders.bsky.social · 3d
A sympathetic response to Ryan Briggs on trust in social science.
My argument: the deepest problem isn’t error, but epistemic incommensurability-when fields lose shared standards for weighing evidence, experience, and interpretation.
Trust depends on commensuration.
open.substack.com/pub/kylesaun...
Trust, Incommensurability, and the Limits of Intersubjectivity
A response to “Can We Trust Social Science Yet?” by Ryan Briggs
open.substack.com

Reposted by Travis Longcore

macgregorfors.bsky.social
Ian MacGregor-Fors @macgregorfors.bsky.social · 10d
📢 NEW SPECIAL ISSUE OUT!

Excited to share a special issue I co-edited on bird–window collisions, a major yet overlooked source of bird mortality

Bringing together 8 papers, this issue advances methods, evidence, and solutions to inform bird-friendly(er) built environments

OA: tinyurl.com/yss5mvf2

Reposted by Travis Longcore

uclaioes.bsky.social
UCLA Environment @uclaioes.bsky.social · 23d
A new UCLA–NRDC report shows massive pricing disparities in who pays what for water from the #ColoradoRiverBasin.

Some California urban water agencies shell out over $2,500 per acre-foot of surface water, while some irrigation districts pay $0—for the exact same water. ucla.in/4pC6ODH @nrdc.org

Reposted by Travis Longcore, Tuomas Kankaanpää

ulrikacandolin.bsky.social
Ulrika Candolin @ulrikacandolin.bsky.social · 23d
NEW PAPER on impact of #lightpollution, led by Yuhan He who recently defended her PhD thesis.
Historical Exposure to Artificial Light at Night Shapes Daphnia Responses: An Experiment Across an Urban–Rural Gradient - He - 2025 - Ecology and Evolution onlinelibrary.wiley.com/doi/10.1002/...

Reposted by Travis Longcore

ulrikacandolin.bsky.social
Ulrika Candolin @ulrikacandolin.bsky.social · 24d
Grateful for received #funding from @koneensaatio.fi for our project on impact of light pollution on the flux of insects between aquatic and terrestrial habitats. Will be looking for a #postdoc and a #PhD for 4 years – take contact if interested.
koneensaatio.fi/apurahat-ja-...
Light pollution – a biodiversity threat: Impact on insect fluxes across ecosystem boundaries - Koneen Säätiö
Insect biodiversity is declining at an alarming rate. Light pollution has been identified as one contributing factor, yet its impact remains poorly known. Aquatic insects with terrestrial life stages ...
koneensaatio.fi

Reposted by Travis Longcore

uclasustainablela.bsky.social
Sustainable LA @ UCLA @uclasustainablela.bsky.social · Dec 4
Join us for Policymaking Under Uncertainty: Zone 0 and Vegetation Management on Friday December 12, 2025 at 12 p.m. PT
👉 Register today: ucla.zoom.us/webinar/regi...

@edithdeguzman.bsky.social | @travislongcore.bsky.social | Max Moritz | Alessandro Ossola | Nurit Katz
Policymaking Under Uncertainty: Zone 0 and Vegetation Clearance webinar announcement, Friday December 12, 2025 at 12PM PT. Panelists: Edith de Guzman, Travis Longcore, Max Moritz and Alessandro Ossola. Moderated by Nurit Katz and hosted by the UCLA Sustainable LA Grand Challenge.

Reposted by Travis Longcore

Reposted by Travis Longcore

uclalawemmett.bsky.social
UCLA Emmett Institute @uclalawemmett.bsky.social · Nov 24
Read our suggestions for how to kickstart the important transformation of our urban environment to help shield residents from the worst effects of rising temperatures @uclaioes.bsky.social @law.ucla.edu @uclasustainablela.bsky.social @luskininnovation.bsky.social

law.ucla.edu/news/reducin...
A woman using an umbrella to shield the sun on a park bench

travislongcore.bsky.social
Travis Longcore @travislongcore.bsky.social · Nov 19
You don't say. Quality of news outlets shared is lower on conservative social platforms. Bluesky --> more liberal and higher quality news outlets shared. PNAS paper: www.pnas.org/doi/10.1073/... Since you nerds asked, news outlet quality rankings from this paper: academic.oup.com/pnasnexus/ar...

travislongcore.bsky.social
Travis Longcore @travislongcore.bsky.social · Nov 14
Looks like a well-conceived and very necessary initiative; count me in!

travislongcore.bsky.social
Travis Longcore @travislongcore.bsky.social · Nov 14
Media picked up our latest extreme heat work and writes better headlines than I do.. www.yahoo.com/news/article... #urbanecology #extremeheat #parks
Researchers make surprising discovery while studying people's behavior at public parks: 'One compelling exception'
They conducted the research using smartphone location data.
www.yahoo.com

Reposted by Patrick A. Jansen, Travis Longcore

dmevans.bsky.social
Darren Evans @dmevans.bsky.social · Nov 13
If you are interested in helping us to mitigate the impacts of light pollution #ALAN on biodiversity, and work on street lighting mitigation and road safety, consider joining our Knowledge Network: www.ncl.ac.uk/press/articl...
Lighting the way to safer, smarter and sustainable roads
A new European research initiative, SAFELUX – The Light We Need, is set to transform how we light our roads at night - improving safety while reducing energy use and environmental impacts.
www.ncl.ac.uk

Reposted by Travis Longcore

Reposted by Travis Longcore

travislongcore.bsky.social
Travis Longcore @travislongcore.bsky.social · Nov 6
My projects have always done all-sky measurements under all conditions because I'm concerned with the effects on wildlife, as well as interested in seeing the stars. For example, this paper --> iopscience.iop.org/article/10.1... where we show the influence of the % clouds on illuminance.
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To ensure we keep this website safe, please can you confirm you are a human by ticking the box below.
iopscience.iop.org

Reposted by Travis Longcore

ricardonature.bsky.social
Ricardo Rocha @ricardonature.bsky.social · Nov 3
In 2010-2013, conservation teams on #Chichijima - 1 of the main islands in the #Ogasawara chain - captured & removed 131 feral cats. The goal was to reduce predation pressure on an endangered pigeon. The results were immediate: adult pigeon numbers rose from 111 to 966 www.nature.com/articles/s42...

Reposted by Travis Longcore, Peter Jacobs

cira-csu.bsky.social
cira-csu.bsky.social @cira-csu.bsky.social · Oct 30
A look at the devastating power loss across Jamaica following the historic crossing of Hurricane Melissa, captured by NOAA-21.

Reposted by Mark Lubell, Silvia Secchi, Travis Longcore

dustinmulvaney.bsky.social
Dustin Mulvaney @dustinmulvaney.bsky.social · Oct 30
TIL the National Environmental Policy Act is the only thing preventing Donald Trump from dropping nuclear weapons all over the American West.
usili.bsky.social SPOOKY Mistress Usili (Sage) 🏳️‍⚧️ @usili.bsky.social · Oct 30
Good news everyone.

We have the EIS process to come to the rescue here, since I'm not joking, nuclear testing in the 70s and on was required to proceed an Environmental Impact Statement...

www.nrc.gov/docs/ML0331/...

travislongcore.bsky.social
Travis Longcore @travislongcore.bsky.social · Oct 28
The global biomass of mammals since 1850. On the bright side, a few more whales since the 1980s. www.nature.com/articles/s41...

travislongcore.bsky.social
Travis Longcore @travislongcore.bsky.social · Oct 28
Healthy forests have native pollinators.
marcofesta.bsky.social Marco Festa-Bianchet 🇨🇦 @marcofesta.bsky.social · Oct 28
Allowing domestic bees in a national park is akin to letting cattle graze in it. If beekeepers wanted healthy forests they would not introduce a competitor to wild pollinators.

Reposted by Travis Longcore

marcofesta.bsky.social
Marco Festa-Bianchet 🇨🇦 @marcofesta.bsky.social · Oct 28
Allowing domestic bees in a national park is akin to letting cattle graze in it. If beekeepers wanted healthy forests they would not introduce a competitor to wild pollinators.

Reposted by Travis Longcore

travislongcore.bsky.social
Travis Longcore @travislongcore.bsky.social · Sep 29
Big thanks to @uclasustainablela.bsky.social at for funding the Heat Resilient LA project and @countyofla.bsky.social for their collaboration. end/

travislongcore.bsky.social
Travis Longcore @travislongcore.bsky.social · Sep 29
Put these papers together and when it comes to _outdoor_ exposure to extreme heat, you need to bring shade to the people where they are -- bus stops, parking lots, dropoff/pickup locations -- and similarly provide cooling locations close to where they are (minimize walking to get there). 7/

travislongcore.bsky.social
Travis Longcore @travislongcore.bsky.social · Sep 29
And: Space-time dynamics in hazard exposure analysis: smartphone locations show pedestrian routes are inflexible to extreme heat events. www.nature.com/articles/s44... 6/
Space-time dynamics in hazard exposure analysis: smartphone locations show pedestrian routes are inflexible to extreme heat events - npj Natural Hazards
npj Natural Hazards - Space-time dynamics in hazard exposure analysis: smartphone locations show pedestrian routes are inflexible to extreme heat events
www.nature.com

travislongcore.bsky.social
Travis Longcore @travislongcore.bsky.social · Sep 29
This is part of our series of papers using 📱 smartphone data to understand extreme heat impacts in Los Angeles. See: Smartphone locations reveal patterns of cooling center use as a heat mitigation strategy 🧊 www.sciencedirect.com/science/arti... 5/
Smartphone locations reveal patterns of cooling center use as a heat mitigation strategy
The increasing frequency and duration of extreme heat events prompts questions regarding mitigation proposals and evaluation of current strategies suc…
www.sciencedirect.com

travislongcore.bsky.social
Travis Longcore @travislongcore.bsky.social · Sep 29
Planners should focus shade for cooling in areas of greater convenience (i.e. along daily routes) during extreme heat. Invest in cooling centers, streetscapes, workplaces, and residential comfort. 🌳🌳🌳🌳🌳🌳🌳 4/