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Julian Olden

@oldenfish.bsky.social

1.9K followers 860 following 55 posts

Professor @ UW | ecologist | freshwater | consumer of flat whites & craft 🍺 | gentle 🐟 squeezer | 🇨🇦 | EiC Water Biology and Biosecurity | AE @ESA Frontiers and Eco Apps | www.oldenfish.com | Views are my own ✊

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Julian Olden @oldenfish.bsky.social · 1d

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

Julian Olden @oldenfish.bsky.social · 9d

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 · 9d

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.

fieldnotesjournal.org

Julian Olden @oldenfish.bsky.social · 14d

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

Julian Olden @oldenfish.bsky.social · 18d

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

Julian Olden @oldenfish.bsky.social · 18d

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 · 18d

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.

Julian Olden @oldenfish.bsky.social · 18d

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.

Julian Olden @oldenfish.bsky.social · 18d

This study leveraged a comprehensive database of stable isotope values for fish communities worldwide. doi.org/10.1051/kmae.... And yes, stable isotopes have limitations ... isotopic vs. trophic niches. We cover all of this in our paper!

IsoFresh: A global stable isotope database of freshwater food webs | Knowledge and Management of Aquatic Ecosystems

Knowledge and management of aquatic ecosystems (formerly Bulletin Français de la Pèche et de la Pisciculture), an international journal on freshwater ecosystem

Julian Olden @oldenfish.bsky.social · 18d

In a global test, we show that morphological traits show weak (ca. 10% var exp) associations with d13C & d15N for freshwater fish species. At the individual level, morphology explained 4% in isotopic variation within populations. Body size & jaw length explained some var, albeit not much.

Julian Olden @oldenfish.bsky.social · 18d

Support of such claims depends on the fundamental, albeit often unspoken, assumption that morphological characteristics of fish, such as body size & shape, fin configuration, & the size & orientation of the mouth and eyes, serve as reliable indicators of their feeding strategies & prey preferences.

Julian Olden @oldenfish.bsky.social · 18d

Fish ecologists routinely posit that functional trait analyses, founded either solely or in part on morphological traits, provide opportunities to guide global biodiversity conservation. Our paper just published in GEB sought to explore this claim. doi.org/10.1111/geb.... Read thread below.

Julian Olden @oldenfish.bsky.social · 27d

Agree, we all definitely need this type of encouraging feedback! :)

Julian Olden @oldenfish.bsky.social · Sep 7

Absolutely! I'm experiencing the same thing as AE for a few journals. Authors are getting frustrated with me (I feel awful), and often, the additional burden shifts to me to provide a second review. 😒

Julian Olden @oldenfish.bsky.social · Sep 3

Congrats!

Julian Olden @oldenfish.bsky.social · Aug 29

Really important science and message - thank you Miguel!

Julian Olden @oldenfish.bsky.social · Aug 26

It was a real pleasure to participate in the Mazama Newt Workshop at Crater Lake hosted by the @oregonzoo.bsky.social and the National Park Service. Discussions focused on a recovery plan for the Mazama newt in light of an exploding invasive signal crayfish. Great to see @ericrlarson.bsky.social!

Julian Olden @oldenfish.bsky.social · Jul 22

Yep, the University of Washington also did this about 2 years ago, and it was (and still is) an utter trainwreck!

Julian Olden @oldenfish.bsky.social · Jul 6

Just out: Few-shot transfer learning enables robust acoustic monitoring of wildlife communities at the landscape scale. Super great work by Gio Jacuzzi. doi.org/10.1016/j.ec.... Github release: zenodo.org/records/1569...

Julian Olden @oldenfish.bsky.social · Jul 6

To play devil’s advocate (not having watched the clip), Suzuki is likely trying to trigger more emotion and action to prove his statement wrong!

Julian Olden @oldenfish.bsky.social · Jun 26

Thanks Ana Clara! It's great to be visiting!

Julian Olden @oldenfish.bsky.social · Jun 26

Wonderful to be able to spend some time at @iea-udg.bsky.social at @univgirona.bsky.social with my host and friend @garciaberthou.bsky.social. Looking forward to my seminar in a few hours!

Julian Olden @oldenfish.bsky.social · Jun 23

A huge congrats to Dr. Diallo @jessdiallo.bsky.social! Many more great things lay ahead!

Jessica Diallo @jessdiallo.bsky.social · Jun 20

I'm excited to share that I've graduated with my PhD from @uwsafs.bsky.social, with a dissertation focused on the lifetime trophic ecology of fishes and invasive species management!
🐟 📈 🔬

Thank you to @oldenfish.bsky.social for your mentorship and support!

Julian Olden @oldenfish.bsky.social · Jun 14

Another wonderful CESAB FOOD-WEBS working group meeting!. Such a wonderful and productive time (managed to submit 2 papers during the meeting) Special thanks to @profchrisharrod.bsky.social for hosting us at @sceneuog.bsky.social in Scotland! Funding: @frbiodiv.bsky.social

Julian Olden @oldenfish.bsky.social · Jun 7

Thanks Jono. Writing that piece was among one of the highlights of my Leopold Fellowship. Very therapeutic to write and the message is constantly in the forefront of my mind.

Reposted by Julian Olden

Jessica Diallo @jessdiallo.bsky.social · Jun 3

The impact of invasive fishes lasts a lifetime -
we found lifetime trophic shifts in native species using fish eye lens stable isotope analysis coupled with otolith growth measurements 🐟 👁️ 📈

Check out the new pub with @oldenfish.bsky.social
esajournals.onlinelibrary.wiley.com/doi/10.1002/...