Erin Dunlop

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!

Lake Simcoe never disappoints- lots of prey fish to see with our echosounder tonight. #LakeSimcoe

Beautiful morning to be out pinging in Parry Sound (Georgian Bay, Lake Huron).

Quadrillions of invasive mussels are damaging the Great Lakes, documentary shows Since the late 1990s, the lake whitefish population has declined as much as 80 percent in parts of the Great Lakes. The culprit is a tiny invasive species called the quagga mussel.

Many reasons why the feds need to keep science staff. Invasive species & water know no boundaries. The quagga mussel is in at least 17 states & Canada. There needs to be strong cooperative programs & research to deal with invasives.
🌊🌊
@alltooclearfilm.bsky.social

www.wpr.org/environment/...

Trump administration layoffs hit NOAA, agency that forecasts weather, hurricanes The National Oceanic and Atmospheric Administration houses key groups like the National Weather Service. Experts warn the consequences of employee cuts could be drastic.

Experts warn the consequences of employee cuts could be drastic.

Story by @npr.org: www.npr.org/2025/02/27/n...

📣 TWO WEEKS UNTIL WE STAND UP FOR SCIENCE! 📣

On March 7th, we’re Standing Up for Science in DC & ALL 50 STATES to make our voices heard. We hope you’ll join us! ☀️

#sciencenotsilence #scienceforall #standupforscience2025

Trump firings hit Great Lakes sea lamprey program, Michigan forestry workers | Bridge Michigan Fish and wildlife officials tasked with holding back a species that would otherwise decimate the Great Lakes fishery were among those caught up in a mass purge of federal workers. Dozens, if not hundr...

It is tough to do sea lamprey control in the US waters of the Great Lakes when front line control agents are fired. Just one of the consequences associated with random terminations of environmental professionals in the US.
www.bridgemi.com/michigan-env...

Lake Erie, other Great Lakes could be hurt by federal cuts and hiring freezes Two of the biggest threats to the Great Lakes region’s $7 billion fishery — invasive carp and sea lampreys — will get worse if the Trump Administration’s ...

Lake Erie, other Great Lakes could be damaged by Trump’s funding cuts, hiring freezes

www.toledoblade.com/local/enviro...

Mortality drives production dynamics of Atlantic cod through 1100 years of commercial fishing Fishing in the Viking era did not affect the Icelandic cod population, but foreign markets in the 14th century changed everything.

🚨Paper alert

Steve Campana et al rewrite the history of Atlantic cod and the #Iceland ground fishery

A must read!

#Fish #Fisheries #OceansPast

Mortality drives production dynamics of Atlantic cod through 1100 years of commercial fishing | Science Advances www.science.org/doi/10.1126/...

Age-dependent juvenile mortality explains delayed smolting in a declining steelhead population Fish populations in the Laurentian Great Lakes have undergone major changes over recent decades. Demographic changes in fish populations are often acc…

Age-dependent juvenile mortality explains delayed smolting in a declining steelhead population

#GreatLakes 🧪

www.sciencedirect.com/science/arti...

@not-klaatu.bsky.social @airydunlop.bsky.social

New data shows winters in Great Lakes region shrinking by two or more weeks since 1995 The study fills in more gaps about what goes on out in the lakes during the winter months. Until now, most Great Lakes research has been done on land.

The winters they are a-changin’ www.jsonline.com/story/news/l...

A poster for our pub talk Islands of Water in a Sea of Land: Newly Discovered Species Diversity of Fish in Algonquin Park. Feb 11, 7:30 pm, the Publican. Dr. Mark Ridgway is pictured holding up a 2 foot fish with blue lakewater stretching out in the background

We're back in February for more conservation science! Join Dr. Mark Ridgway for the scoop on Algonquin Park lake fish. There's more going on beneath the waters than we thought!

🌍 Just published: "Knowledge brokers at the interface of environmental science and policy: A review of knowledge and research needs."

We explore how KBs build capacity for evidence-informed decision-making & shine a light on the often 'invisible' work they do.

www.sciencedirect.com/science/arti...

Walleye Numbers are Down in Lake Erie | Great Lakes Now Numbers for walleye are down but up for perch with steelhead fishing soon in Cleveland — according to Ohio Division of Wildlife 2024 trawl survey.

This year’s results bring an end to a streak of wildly successful hatches for walleye.

www.greatlakesnow.org/2024/12/wall...

Alewife in the #GreatLakes are sensitive to seiche-driven upwelling events, forcing large schools to go tight to shore. Implications for potential fish entrainment at cooling-water intake facilities. Results from a fish diversion system monitoring study using #acoustics. 🐟
doi.org/10.1080/0275...

Editor’s Choice-Nearly 6 decades of recruitment trends for Lake whitefish & Cisco in the Great Lakes YouTube video by ICES - International Council for the Exploration of the Sea

🐟 What drives fish recruitment in the Great Lakes?
✍️ In the latest #IJMS #EditorsChoice, @tabrown.bsky.social examines 60 years of Lake Whitefish & Cisco trends, offering key insights for fisheries management.
👉 Read more: doi.org/10.1093/ices...

youtu.be/-jQvHyKBqNo?...

How Many Fish Species Are in North America? Le Comité sur les Noms des Poissons, un comité conjoint de la Société Americaine de Pêcheries et de la Société Americaine des Ichtyologistes et Herpetologistes, a publié la dernière édition de la list...

How Many Fish Species Are in North America?

Nice work @jjschmittersoto.bsky.social et al.

bioone.org/journals/ich...

They wanted to be engineers.

Geneviève Bergeron
Maryse Laganière
Hélène Colgan
Maryse Leclair
Nathalie Croteau
Anne-Marie Lemay
Barbara Daigneault
Sonia Pelletier
Anne-Marie Edward
Michèle Richard
Maud Haviernick
Annie StArneault
Barbara Klucznik-Widajewicz
Annie Turcotte

#ÉcolePolytechnique #Dec6

Check out this new paper led by @tabrown.bsky.social on recruitment trends in coregonines dating back to the 1960s in the #GreatLakes and #LakeSimcoe. Lake whitefish showed synchrony across lakes whereas cisco were more sporadic. academic.oup.com/icesjms/adva...

Registration for the award-winning Michigan State University Extension Introduction to Lakes Online course is open! This introductory six-week online class is designed for anyone interested in gaining a greater appreciation for inland lakes including concerned residents, decision makers, local leaders, and lakefront property owners. Course instructors include faculty from MSU Extension and state agency personnel. The course covers a variety of topics including lake ecology, watershed management, shoreline protection, aquatic plants, Michigan water law, and community engagement. These topics are explored online through video lectures, interactive activities, and discussion forums. Additional resources are also provided for those looking to dive deeper. Participants communicate with each other and instructors through lively discussion forums and biweekly Ask-an-Expert webinars which include guests from organizations such as the Michigan Department of Natural Resources and the Michigan Department of Environment, Great Lakes, and Energy. Registration is open now through January 28, 2025. The cost of the course is $115 per person. Register by January 6 for an early bird price of $95 per person. Scholarships are available. Current individual members of the Michigan Lakes and Streams Association are eligible to receive a $95 reimbursement upon successful completion of the course. A certificate of completion is awarded to those who complete the class. Participants also can receive continuing education credits including 16 Michigan Department of Agriculture and Rural Development Pesticide Applicator Re-Certification credits (8 commercial core and 8 aquatic) and educational hours in the MSU Extension Master Gardener, Master Citizen Planner, and Michigan Naturalist programs. Learn more and register at www.canr.msu.edu/lakesonline.

Registration for Michigan State University Extension's award-winning Introduction to Lakes Online course is open! This six-week online class is designed for anyone interested in gaining a greater appreciation for inland lakes.

Come learn about lakes with us!

www.canr.msu.edu/courses/intr...

Check out this new paper led by @tabrown.bsky.social on recruitment trends in coregonines dating back to the 1960s in the #GreatLakes and #LakeSimcoe. Lake whitefish showed synchrony across lakes whereas cisco were more sporadic. academic.oup.com/icesjms/adva...

Photo of 3 printed colour pages splayed out on dock deck boards. The pages shown are from the Milne Technologies promotional flyer that can be downloaded from https://www.milnetechnologies.ca/MilneTech_Docs/MilneTech_eFlyer.pdf.

Wanna learn more about what we do? Have a look at some of the #hydroacoustic services we provide. Our promo doc includes clickable links to videos, echograms, case studies and examples. Thx for check'n it out! 📌
www.milnetechnologies.ca/MilneTech_Do...

Yesterday was our final day of tagging spawning lake whitefish on Lake Simcoe. We will be tracking the movements of these fish around the lake.

International Conference on Fish Telemetry (7th ICFT) Fourwaves - International Conference on Fish Telemetry (7th ICFT)

Are you a fish telemetry practitioner? The 7th International Conference on Fish Telemetry will take place June 8-13, 2025 in Traverse City, Michigan, USA. The conference website is now live for abstract submission and details on the venue. Help spread the word. event.fourwaves.com/7thicft/pages

Weaving ways of knowing in practice: a collaborative approach to prioritizing community knowledge and values in wildlife camera monitoring with Magnetawan First Nation There is not one singular way to weave together Indigenous and Western knowledges; creating meaningful cross-cultural collaborations requires a foundation of relationships rooted in the context of spe...

Very happy to share our new paper (also my 1st, first-author pub!), which is the result of several years of relationship building, planning, adapting, learning, and reflecting amongst an incredible collaborative team. So awesome to see it out in the world! www.facetsjournal.com/doi/10.1139/...

Just for fun, here is the echogram video for Lake Trout Tag ID 4 from Fig 6 panel b. Note the Cisco school displaying "Fountain Effect" upon Lake Trout attack from below. Super windy day so hope video doesn't make you feel too sea-sick!

FIGURE 6 from TAFS (139) page 420 to 432. 3D plots of the relative positions of tagged lake trout, untagged fish, and Cisco schools. Examples of the associations between tagged lake trout (plus signs) and cisco schools (triangles) and unknown fish targets (circles). The arrows indicate the first observation for each time series shown; distances are relative to that observation. Panel (a) shows lake trout tag number 1, tracked on July 6, 2007

The video animated from Fig 6. We found that Lake Trout are often "pack hunters", displaying coord'd attacks on Cisco schools from below. Obs attack speeds >3 m/s at 5 m from school! The #sonar tag detection tool could track the fine-scale movements of individuals and map out their prey fields.

#ThrowbackThursday; this one from 2007. Tracking tagged (and untagged) Lake Trout using multibeam #sonar and 200 kHz #acoustic tags. 3D model from "Tag01" in TAFS paper by @airydunlop.bsky.social , @harknesslab.bsky.social , @echoview.bsky.social , et al. doi.org/10.1577/T08-...
#hydroacoustics

Black Bass Symposium San Antonio, Texas • August 10 -14, 2025

Black Bass 2025.

storymaps.com/stories/baf0...

This was a cool study and fun paper to write. We followed acoustically tagged lake around with a multibeam sonar to study their behaviour. Observed attacks on prey fish schools and interactions with other lake trout.