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Reposted by Harkness Laboratory of Fisheries Research

Arctic Science Journal @arcticsciencej.bsky.social · 9d

New in Arctic Science: Long-term vertebrate research and monitoring sites in Arctic Canada explores decades of wildlife studies across the North and the lasting legacy of these field stations.

Read more ▶️ buff.ly/hluh47u

#ArcticScience #WildlifeResearch #ArcticCanada

Small shorebird with brown and white feathers standing in shallow Arctic water surrounded by seaweed and ripples.

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Scott Milne (Milne Technologies) @milnetechnologies.ca · Sep 10

Wishing you calm seas @alltooclearfilm.bsky.social! In partnership with @harknesslab.bsky.social and @lakeheaduniversity.bsky.social, we will be sinking an autonomous up-looking echosounder that will ping 24/7 to help understand the diel behaviour of fish and zoop at Sup Shoal. Be sure to tune in!

All Too Clear Film @alltooclearfilm.bsky.social · Sep 10

Pre-dawn departure from Duluth - steaming for 24 hours to get to the Superior Shoal. @CTVLondon picked up the story, check it out:
www.ctvnews.ca/london/artic...

See the Superior Shoal for yourself on the LIVEstream this Sunday 3-5pm ET. www.youtube.com/live/oKB_iw8...

Bruce County filmmakers searching Great Lake for ‘Freshwater Everest’

The research vessel, Blue Heron, left Duluth this morning, steaming towards a once in a lifetime underwater research opportunity in Lake Superior.

www.ctvnews.ca

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John Wares @johnwares.bsky.social · Aug 19

Aren't they lovely? Congratulations to my great colleague Bud Freeman, this is the culmination of over a decade of work!

www.mapress.com/zt/article/v...

Two new species of Micropterus (Centrarchidae) endemic to Atlantic Slope river drainages in Georgia, South Carolina and North Carolina, U.S.A. | Zootaxa

www.mapress.com

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Anthony Ricciardi @ecoinvasions.bsky.social · Aug 15

1/ Who published the first freshwater food web? American ecologist Victor Shelford may have done so (see below) in his classic 1913 monograph "Animal communities in temperate America as illustrated in the Chicago region", a book that inspired Charles Elton (who cited it in Animal Ecology)...

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Bradley E. Howell @bradhowell.bsky.social · Jul 10

Some great talks on fish metabolism, thermal tolerance, and bioenergetics by folks from @trentuniversity.bsky.social at this year’s #SEBconference in Antwerp, Belgium.

@sebiology.bsky.social
@erinmcstewart.bsky.social
@jaydebon.bsky.social
@chris-on-fish.bsky.social

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EcoNana @eco-nana.bsky.social · Jul 9

Think La Niña years are “cool”? Not anymore. Even our coolest years today are hotter than the hottest El Niño years of the past. Climate change is flipping the script — fast. A huge thank you to @zacklabe.com for his amazing graphic!

La Niña Years—Our “Cool” Years—Are Now Warmer Than El Niño Years

Every year, Earth’s temperature changes a little. Sometimes it gets hotter, and sometimes cooler. Scientists track this closely to understand how our climate is changing. But it’s not just about clima...

eco-nana.com

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Harkness Laboratory of Fisheries Research @harknesslab.bsky.social · Jul 9

LMB

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Conservation Physiology @conphysjournal.bsky.social · Apr 9

Home is where the heat is (for brook trout that is)

Intrigued? Then check out this latest #ConPhys in Action piece, explaining the importance of local conditions to 🐟 temperature tolerance, and therefore for #Conservation planning.

Comments on Stewart et al (links in 🧵⬇️ )

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Beth Hoots @whatahoot.bsky.social · Jul 8

A terrific afternoon for fish biology here at #SEBconference ❤️🐟 Great talks by @leeuwisrobin.bsky.social, Moa Metz, and @erinmcstewart.bsky.social about different ways that fish respond to climate warming!

A scientist presents her take-away slide on a large dark stage. It reads: Take-away
• Zebrafish can evolve improved growth at warmer temperatures
• Thermal performance curves can undergo a left or right shift
• Ectothermic vertebrates may adapt to global warming by enhancing performance
• Role of selection in shaping thermal resilence

A scientist presents her title slide on a large stage, it features a beautiful picture of a brook trout.

A scientist presents the methods of her research on a large screen

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Canadian Journal of Zoology @canjzoology.bsky.social · May 6

Meta-analysis reveals that density-dependent growth, survival, and their trade-off vary systematically among habitats and taxa
buff.ly/DgfgJYQ

Line graph with error showing relationship between growth and survival across birds, fish, herptiles, invertebrates, and mammals.

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Algonquin Ice Out Bot @iceoutbot.bsky.social · Apr 26

Current #IceOut conditions in #AlgonquinPark. Image courtesy of The Friends of Algonquin Park.

A webcam shot of Lake of Two Rivers in Algonquin Park.

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Harkness Laboratory of Fisheries Research @harknesslab.bsky.social · Apr 25

And often at high densities, so important food web participants

Matthew L. Miller @matthewlmiller.bsky.social · Apr 25

Did you know there are around 78 sucker species, and all but 2 are found exclusively in North America?

They are not "trash fish" but rather vitally important to freshwater ecosystems. Many have fascinating life histories. And, for anglers, they're great fun to pursue.

Silver redhorse, caught in Minnesota. The redhorse species make spawning runs in large numbers in the Midwest, an often-overlooked natural phenomenon.

White sucker, a common species in the eastern and midwestern United States. I caught this one in Theodore Roosevelt National Park, North Dakota.

Sacramento sucker, caught in California.

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Tom Near @tjnear.bsky.social · Apr 25

Second paper this week from #NearLab!

Chase Brownstein @chasedbrownstein.bsky.social · Apr 25

1/10 🚨🚨 New paper with @tjnear.bsky.social! Here, we revise the systematics of sturgeons using a phylogenetic approach! We confirm an Early Cretaceous origin for the sturgeon total clade and resurrect several genera for living species!

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Harkness Laboratory of Fisheries Research @harknesslab.bsky.social · Apr 5

We're not attending ICFT. Bigger issues at hand. We've put a lot of effort over the years in fine-scale positioning arrays, so we were looking forward to attending.
Oh well....

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Harkness Laboratory of Fisheries Research @harknesslab.bsky.social · Mar 29

Later in the 1930s, Elton visited the station on Lk Opeongo.
It likely reflected correspondence over the years between him and Dymond.

Harkness Laboratory of Fisheries Research @harknesslab.bsky.social · Mar 29

Later in the 1930s, Charles Elton visited the park & Harkness... greeted by folks from Harkness at the train station in Pembroke, Ontario.
Elton & Harkness Lab...now that's something.
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Harkness Laboratory of Fisheries Research @harknesslab.bsky.social · Mar 29

Elton's book, Dymond & MacDougall were pivotal in bringing a modern ecosystem view to Algonquin Park.
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Harkness Laboratory of Fisheries Research @harknesslab.bsky.social · Mar 29

Frank MacDougall, superintendent of Algonquin Park at the time, worked closely with Dymond to bring a science element to new park directions. Elton's concepts of food chains, pyramids, and productivity were promoted by Dymond.

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Harkness Laboratory of Fisheries Research @harknesslab.bsky.social · Mar 29

First review of Elton's Animal Ecology (I believe) was by JR Dymond in Canadian Field Naturalist. A glowing review by Dymond. Dymond was curator of ichthyology at Royal Ontario Museum, U of Toronto. He was also working closely with new leadership managing Algonquin Park...
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Harkness Laboratory of Fisheries Research @harknesslab.bsky.social · Mar 29

Elton's day.
@ecoinvasions.bsky.social thanks for the reminder

Interesting Harkness connection...

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Anthony Ricciardi @ecoinvasions.bsky.social · Mar 28

Born on March 29, 125 years ago:
One of the most influential ecologists of the 20th century and the father of animal ecology, who turned natural history into a science: Charles Sutherland Elton (1900-1991).
A birthday thread… 🧵[1/8]

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Benjamin Hlina, PhD @benjaminhlina.bsky.social · Mar 22

Trophic Ecologists - new pkg alert - {trps} (pronounced ‘tropes’): Bayesian Trophic Position Models using 'Stan'. Estimates trophic position using equations from Post (2002), Vander Zanden & Vadeboncoeur (2002), & Heuvel et al. (2024).

benjaminhlina.github.io/trps/

#rstats #ecology #foodwebs

Bayesian Trophic Position Models using stan

Bayesian trophic position models using stan by leveraging brms for stable isotope data. Trophic position models are derived by using equations from Post (2002) <doi:10.1890/0012-9658(2002)083[0703:USI...

benjaminhlina.github.io

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Canadian Science Publishing @cdnsciencepub.com · Mar 20

How do habitat conditions, water flow, and #climatechange shape fish populations? A new CJFAS collection honours Dr. Boisclair’s research on these key topics ▶️ ow.ly/B4vl50UYTCf

📸 Eva Enders

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Harkness Laboratory of Fisheries Research @harknesslab.bsky.social · Feb 21

3-2 in overtime
Amazing game on ice;
Perfect ... off ice

Harkness Laboratory of Fisheries Research @harknesslab.bsky.social · Feb 14

Today at Harkness. Thanks Lucas....

Feb 14 2025 at Harkness Laboratory of Fisheries Research

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