Julian Olden
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oldenfish.bsky.social
Julian Olden
@oldenfish.bsky.social
2K followers 880 following 76 posts

Professor @ UW | ecologist | freshwater | consumer of flat whites & craft ๐Ÿบ | gentle ๐ŸŸ squeezer | ๐Ÿ‡จ๐Ÿ‡ฆ | EiC Water Biology and Biosecurity | AE @ESA Frontiers and Eco Apps | www.oldenfish.com | Views are my own โœŠ

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Environmental science 73%
Geography 18%
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oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท Jan 9
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 ๐Ÿ‘‡ | DM for PDF
Image of river protection status in the United States

oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท 21h
@uwenvironment.bsky.social @uwsafs.bsky.social @cig-uw.bsky.social
fieldnotes-uw.bsky.social FieldNotes @fieldnotes-uw.bsky.social ยท 4d
New Blog post!

Rough Seas For Offshore Wind: The Legal Battles Shaping US Offshore Energy Development

Our first blog this quarter from Xander Smith!!
Check it out at the FieldNotes website: fieldnotesjournal.org/new-blog/202...

Reposted by Julian D. Olden

fieldnotes-uw.bsky.social
FieldNotes @fieldnotes-uw.bsky.social ยท 4d
New Blog post!

Rough Seas For Offshore Wind: The Legal Battles Shaping US Offshore Energy Development

Our first blog this quarter from Xander Smith!!
Check it out at the FieldNotes website: fieldnotesjournal.org/new-blog/202...

oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท 5d
Super happy to have @ulaskimarta.bsky.social joining us at @uwsafs.bsky.social! Looking forward to working together!
ulaskimarta.bsky.social Marta Ulaski @ulaskimarta.bsky.social ยท 5d
I am very excited to be joining the Freshwater Ecology and Conservation Lab and @oldenfish.bsky.social with the support of the Gordon and Betty Moore Foundation at the University of Washington @uwsafs.bsky.social this Fall!

Stay tuned for more work on habitat policy, climate, and salmon ๐Ÿ‘€
uwnews.uw.edu UW News @uwnews.uw.edu ยท 5d
@uofwa.uw.edu was awarded $2.5 million from the @moorefound.bsky.social to fund 16 postdoctoral fellows in a number of fields across the @uwartsci.bsky.social, the College of Engineering and the @uwenvironment.bsky.social.
www.washington.edu/news/2026/02...

Reposted by Julian D. Olden

ulaskimarta.bsky.social
Marta Ulaski @ulaskimarta.bsky.social ยท 5d
I am very excited to be joining the Freshwater Ecology and Conservation Lab and @oldenfish.bsky.social with the support of the Gordon and Betty Moore Foundation at the University of Washington @uwsafs.bsky.social this Fall!

Stay tuned for more work on habitat policy, climate, and salmon ๐Ÿ‘€
uwnews.uw.edu UW News @uwnews.uw.edu ยท 5d
@uofwa.uw.edu was awarded $2.5 million from the @moorefound.bsky.social to fund 16 postdoctoral fellows in a number of fields across the @uwartsci.bsky.social, the College of Engineering and the @uwenvironment.bsky.social.
www.washington.edu/news/2026/02...
People walking on a college campus

oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท 5d
Mismatches between invasive species policy, which relies on administrative borders, and scientific research conducted at ecological units complicate regulation, risk assessment, and biosecurity. Here we explore some solutions.

www.nature.com/articles/s44...

oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท 16d
โ€ชAnother wonderful CESAB FOOD-WEBS working group meeting in Montpellier! Super productive and creative time together. Funding: @frbiodiv.bsky.social

Reposted by Julian D. Olden

jjopperman.bsky.social
Jeff Opperman @jjopperman.bsky.social ยท 19d
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-uw.bsky.social
FieldNotes @fieldnotes-uw.bsky.social ยท 25d
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!

oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท 28d
So glad that you investigated this issue! PISS is crappy, and it needs to be called out.

Reposted by Julian D. Olden

americanrivers.bsky.social
American Rivers @americanrivers.bsky.social ยท Jan 10
๐Ÿ—ฃ๏ธ MAJOR ANNOUNCEMENT: Over 80% of our nationโ€™s 4.4M miles of rivers arenโ€™t adequately protected!

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

โžก๏ธ Learn more: www.americanrivers.org/npra-explore...

oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท Jan 9
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.

oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท Jan 9
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.

oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท Jan 9
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.

oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท Jan 9
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.

oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท Jan 9
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.

oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท Jan 9
Americaโ€™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.

oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท 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

๐Ÿ‘‡
esajournals.onlinelibrary.wiley.com/doi/10.1002/...

Reposted by Julian D. Olden

profchrisharrod.bsky.social
Chris Harrod @profchrisharrod.bsky.social ยท Dec 15
hot off the press! Led by the mighty Marie Perga, including many members of the Fooฮด-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

oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท Dec 10
A huge congrats Tim!

oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท Nov 28
I enjoyed your talk Miguel. It was early for me (6:30 am), but it was well worth it!

oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท Nov 25
Nah ... I end up buying caps on eBay. I mostly use uncrimped caps (i.e., before they are used).

oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท Nov 24
Late night, but there is no better feeling that having stable isotope samples all prepped! โš›๏ธ๐ŸŽ‰

oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท 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

oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท Nov 21
Sunrise from UW SAFS @uwsafs.bsky.social. Not a bad way to start the day! โ˜€๏ธ

oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท Nov 13
Thanks Corey!

Reposted by Julie L. Lockwood

oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท 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

oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท Oct 6
The current website of the US Department of Agriculture. What a nightmare.

Reposted by Julie L. Lockwood, Trevor A. Branch

oldenfish.bsky.social
Julian Olden @oldenfish.bsky.social ยท 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-uw.bsky.social FieldNotes @fieldnotes-uw.bsky.social ยท 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-uw.bsky.social
FieldNotes @fieldnotes-uw.bsky.social ยท 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