Julian D. Olden | Lightnews

Julian Olden

@oldenfish.bsky.social

Videos

Environmental science 73%

Geography 18%

Posts Replies Media Videos

Pinned

Julian Olden @oldenfish.bsky.social · 26d

National assessment of river protection in the U.S.

Article: doi.org/10.1038/s418...
Policy Brief: doi.org/10.1038/s418...
Rivers Explorer: map.myriver.americanrivers.org

Collaboration b/t American Rivers, Conservation Science Partners, Univ WA @americanrivers.bsky.social

Thread 👇 | DM for PDF

Image of river protection status in the United States

Julian Olden @oldenfish.bsky.social · 9d

‪Another wonderful CESAB FOOD-WEBS working group meeting in Montpellier! Super productive and creative time together. Funding: @frbiodiv.bsky.social

Reposted by Julian D. Olden

Jeff Opperman @jjopperman.bsky.social · 13d

River need greater protection, but to date our methods for tracking protection status have been limited. In this post I describe a new method from @oldenfish.bsky.social @americanrivers.bsky.social and Conservation Science Partners - the Protected River Index

www.forbes.com/sites/jeffop...

Improving How We Track Progress For River Protection

Rivers have relatively less protection than do land or oceans and we lack effective mechanisms for measuring protection. A new study offers an improved mechanism for tracking progress.

www.forbes.com

Reposted by Julian D. Olden

FieldNotes @fieldnotes-uw.bsky.social · 19d

Welcome the editors for FieldNotes 2026! pt. 1

We're so excited to introduce the editors of our editorial team! Stay tuned for the remaining editors and other updates!

Julian Olden @oldenfish.bsky.social · 22d

So glad that you investigated this issue! PISS is crappy, and it needs to be called out.

Reposted by Julian D. Olden

American Rivers @americanrivers.bsky.social · 25d

🗣️ MAJOR ANNOUNCEMENT: Over 80% of our nation’s 4.4M miles of rivers aren’t adequately protected!

Our brand new peer-reviewed research with Conservation Science Partners published in Nature Sustainability shows just how vulnerable our rivers are.

➡️ Learn more: www.americanrivers.org/npra-explore...

Julian Olden @oldenfish.bsky.social · 26d

Expanding river-specific protections, such as new federal and state Wild and Scenic Rivers and Outstanding Resource Waters, would ensure effective, durable protection measures tailored to rivers.

Julian Olden @oldenfish.bsky.social · 26d

Individual states can promote river protection through new or strengthened riparian buffer legislation, administrative rules, or agricultural/forestry best practices. Protecting rivers flowing through private lands, such as those offered by easements or land trust acquisitions/agreements, is key.

Julian Olden @oldenfish.bsky.social · 26d

Federal public lands have an outsized role in protecting rivers nationwide, and multiple-use lands provide a major opportunity to scale protections; weakening or eliminating existing environmental policy mechanisms would undermine these safeguards.

Julian Olden @oldenfish.bsky.social · 26d

Protection often does not coincide with other conservation objectives, where only a small fraction of watersheds with high biodiversity, habitat intactness and importance to drinking water supply are adequately protected.

Julian Olden @oldenfish.bsky.social · 26d

Protection is overwhelmingly driven by land-based mechanisms, which are often spatially misaligned with hotspots of freshwater biodiversity and may inadequately safeguard rivers from upstream threats. Protection is also uneven across river types (intermittent rivers less protected) and geographies.

Julian Olden @oldenfish.bsky.social · 26d

America’s rivers are alarmingly under protected. Just over one-tenth (12%) of rivers in the contiguous United States and less than one-fifth (19%) nationwide are currently protected at a level deemed viable, while two-thirds remain entirely unprotected under the mechanisms assessed in this study.

Julian Olden @oldenfish.bsky.social · Dec 19

Unraveling multipredator impacts in salmon-bearing rivers using quantitative DNA metabarcoding. A wonderful collaboration with @jwinkfish.bsky.social.

@uwsafs.bsky.social @uwenvironment.bsky.social @uwfreshwater.bsky.social

👇
esajournals.onlinelibrary.wiley.com/doi/10.1002/...

Reposted by Julian D. Olden

Chris Harrod @profchrisharrod.bsky.social · Dec 15

hot off the press! Led by the mighty Marie Perga, including many members of the Fooδ-webs team, and kindly funded by the Foundation for Research on Biodiversity/CESAB

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

A global estimator of C and N isotope baselines for fresh waters

Baselines are the pebbles in the shoes of isotope ecologists. The extreme variability of the isotope composition of resources at the base of food webs governs the spatial differences of consumers'...

besjournals.onlinelibrary.wiley.com

Julian Olden @oldenfish.bsky.social · Dec 10

A huge congrats Tim!

Julian Olden @oldenfish.bsky.social · Nov 28

I enjoyed your talk Miguel. It was early for me (6:30 am), but it was well worth it!

Julian Olden @oldenfish.bsky.social · Nov 25

Nah ... I end up buying caps on eBay. I mostly use uncrimped caps (i.e., before they are used).

Julian Olden @oldenfish.bsky.social · Nov 24

Late night, but there is no better feeling that having stable isotope samples all prepped! ⚛️🎉

Julian Olden @oldenfish.bsky.social · Nov 24

Finally found some time to reconnect with my caps. Red swamp crayfish in all its glory. Adding it to my office wall! @newbelgium.bsky.social @pikebrewing.bsky.social

Julian Olden @oldenfish.bsky.social · Nov 21

Sunrise from UW SAFS @uwsafs.bsky.social. Not a bad way to start the day! ☀️

Julian Olden @oldenfish.bsky.social · Nov 13

Thanks Corey!

Reposted by Julie L. Lockwood

Julian Olden @oldenfish.bsky.social · Nov 13

Is Facebook fueling the online trade in aquatic invasive species?

Survey of hobbyists indicates that over half engage in peer-to-peer organism exchange, transport across state lines & release them into the wild.

AI Podcast: open.substack.com/pub/oldenfis....

Paper: www.reabic.net/journals/mbi...

www.reabic.net

Julian Olden @oldenfish.bsky.social · Oct 6

The current website of the US Department of Agriculture. What a nightmare.

Reposted by Julie L. Lockwood, Trevor A. Branch

Julian Olden @oldenfish.bsky.social · Sep 28

I've been proud to serve as the faculty leader for this effort. It has been a pleasure to interact with passionate students and emerging science communicators for many years now! We publish annually. I encourage you to check out past issues and follow! @uwsafs.bsky.social @trevorabranch.bsky.social

FieldNotes @fieldnotes-uw.bsky.social · Sep 28

FieldNotes (fieldnotesjournal.org) is a student-run undergraduate journal and digital storytelling platform at @uwenvironment.bsky.social. We have focused on highlighting undergraduate research and publishing through-provoking articles about gnarly environmental issues since 2018. Please follow.

FIELDNOTES

fieldnotesjournal.org

Reposted by Julian D. Olden

FieldNotes @fieldnotes-uw.bsky.social · Sep 28

FIELDNOTES

fieldnotesjournal.org

Julian Olden @oldenfish.bsky.social · Sep 23

Interesting! I'm on my reading list for the week.

Julian Olden @oldenfish.bsky.social · Sep 19

Absolutely ... and very much our message! Thanks for your comment.

Julian Olden @oldenfish.bsky.social · Sep 19

Funding: CESAB programme of @frbiodiv.bsky.social. Great list of co-authors and fun working group! @uwsafs.bsky.social @uwfreshwater.bsky.social @profchrisharrod.bsky.social @profchrisharrod.bsky.social

Julian Olden @oldenfish.bsky.social · Sep 19

Importantly, we continue to believe that morphological traits hold VALUE in depicting habitat use, ecological diversity & offering insight into fish movement! But our results do raise concerns of whether such traits are ‘functional’ in that they are a reasonable proxy of a species' trophic ecology.

Reposted by Joaquín Hortal

Julian Olden @oldenfish.bsky.social · Sep 19

The growing enthusiasm for trait-based ecology, particularly approaches grounded in morphological traits, is increasingly shaping science. However, we caution that this enthusiasm should not overlook the limitations of morphological traits as a meaningful lens or currency for functional inference.

Add to Home Screen

Light up
your news

Add to Home Screen

Light upyour news

Sign in to Lightnews

Sign up to start reading

Connect Bluesky

Connect with Bluesky

Light up
your news