Jon Sweetman

Mesocosm tanks in a field with insect emergence traps

Severe thunderstorm and tornado warning this evening. We will see how our floating emergence traps fare.. the joys of outdoor mesocosms! @masonsward.bsky.social

A Home Made of Microplastics - bioGraphic Caddisfly cases from museum collections reveal that microplastics infiltrated “pristine” freshwater environments far earlier than suspected.

www.biographic.com/a-home-made-...

Plastic in every level of food web, say Sussex scientists The university study analyses more than 580 invertebrate samples from 51 sites across Sussex.

Plastic is everywhere. Even in earthworms! Find out about our new research funded by @hedgehogsociety.bsky.social and @sussex.ac.uk. www.bbc.co.uk/news/article...
@emilyzoologist1.bsky.social

Thanks for a great meeting @freshwaterscience.bsky.social!

@masonsward.bsky.social

Party on! Really enjoyable talk by Mason Ward about invertebrate residents of vernal ponds and their determinants at #sfs2025

Setting up and filling mesocosms today with @masonsward.bsky.social M

Not completely set up yet, but they will be out at Rock Springs. agsci.psu.edu/research/cen...

Pulling mesocosm tanks out of storage and cleaning them in preparation for summer experiment! Quill was happy to come out and help..

📣Join the Early Career Committee for their workshop on navigating mentorship in freshwater science!

📆Thursday, May 9, 12:00 PM EST

🌐Registration: ua-edu.zoom.us/meeting/regi...

Freshwater macroinvertebrates have been incorporating microplastics for more than 50 years.
👇 Caddisfly cases with plastics from 1971 and 1986
Paper: www.sciencedirect.com/science/arti... and @science.org news: www.science.org/content/arti...

Crane fly larvae (Tipulidae) Nice big chonker (technical term)..

Sampling aquatic invertebrate substrate cages with PhD student Ibrahim Fagbohun and colleague Dan Allen in Maryland today. A little drizzly but otherwise good field day!

Eubranchipus vernalis (Branchiopoda: Anostraca). eastern fairy shrimp #macroinvertebrates #fairyshrimp

Happy Spring! Fairy shrimp (Eubranchipus vernalis) are hatching in the local vernal
ponds

Litobranch recurvata (Ephemeroptera: Ephemeridae) larvae

Mandibular tusks

Antennae lack the big whorl like setae like in Hexagenia

1st abdominal gill is small, a single filament

A cool burrowing mayfly (Ephemeroptera: Ephemeridae) from eastern North America - from last year's class samples from a stream in central Pennsylvania. Litobrancha recurvata (McCafferty, 1971). #macroinvertebrates #Ephemeroptera

Climate.gov Home Science & information for a climate-smart nation

Welcome to Climate.gov & thanks for following us! Let us introduce ourselves. We provide timely & authoritative scientific data & information about climate science, adaptation, & mitigation. In short, our mission is to provide science & information for a climate-smart nation.

Winter sampling with my aquatic invertebrate ecology class! Always impressed in how diverse and abundant these streams are in the winter.

Ameletus (Ephemeroptera) showing distinctive row of comb-like spines on the maxillae

Ameletus spp. (Ephemeroptera: Ameletidae)

Happy New Year! A couple pictures of an Ameletus spp, the comb-mouthed minnow mayfly. (Ephemeroptera: Ameletidae)

*they’re

Let's get #MayflyMonday going! Here's a pretty little Epeorus from Yukon in northern Canada.

Mayfly gills are amazingly diverse. Often the fragile gills of Family Leptophlebiidae fall off in preserved specimens, but sometimes their relatively intact #mayflymonday #Ephemeroptera #macroinvertebrates

We are currently seeking a MSc domestic student (i.e. Canadian citizen or permanent resident). The project will focus on developing and testing novel stream biomonitoring methods incorporating eDNA to assay community membership from microbes to fish. These rapid bioassessment techniques will be tested against traditional approaches in their ability to produce functional, community and multitrophic indicators of ecosystem integrity and biodiversity along a gradient of impact recovery. The student will be hosted at Laurentian University (Dr. Brie Edwards) and co-supervised by Dr. Erik Emilson (Natural Resources Canada). The advisory committee for the project will also include PIs from more than a single institution, and will reflect the collaborative, team-based approach to the research, both in lab and field environments. Additional project collaborators are located at Queen's, Laurier, Ontario Tech and Acadia universities, and in MNR and MECP. Field work will begin in Spring of 2025 and will be conducted in the Sudbury area. Ideal candidates will have a strong background in aquatic ecology and an interest in benthic bioindicators, molecular techniques, and population and community responses to environmental change. Quantitative skills in statistical analysis are desired but can be provided through training programs at the respective institutions. Interested students should send a CV, cover letter expressing interest and relevant skills, as well as a copy of unofficial transcripts to Brie Edwards (bedwards2@laurentian.ca). Please include “CRADLES graduate interest” as the subject line. Review of applications will occur as they are received, but only those selected for an interview will be contacted. While the positions are targeted at domestic students, we encourage all qualified applicants from diverse cultural backgrounds and gender identities, Indigenous persons, women and visible minorities to apply.

MSc Opportunity: Conservation and Restoration of Aquatic Diversity in the face of Legacy and Emerging Stressors (CRADLES) project is seeking a MSc student to develop novel stream biomonitoring methods incorporating eDNA to assay communities. See further details below & ALT text. #AcademicSky

How to stop plastic pollution: three strategies that actually work Countries are meeting to agree the first ever global treaty on curbing plastic pollution. Research suggests where bans and incentives can make a difference.

"How to stop plastic pollution: three strategies that actually work"
Countries are meeting to agree the first ever global treaty on curbing plastic pollution. Research suggests where bans and incentives can make a difference.
www.nature.com/articles/d41...

Our little aquatic bug pack is growing! Let’s keep on with it! Like, repost and let me know if you want to be added!

go.bsky.app/F3WGCuV

Hydropsyche

Dorsal view showing sclerites and prosternal plate

From (Wiggins, 1996)

Hydropsyche (Hydropsychidae: Trichoptera). Drawing from Wiggins, 1996..

Cheumatopsyche (Hydropsychidae: Trichoptera)

small sclerites

Notched frontoclypeus of Cheumatopsyche spp.

ventral view from Wiggins, 1996

Cheumatopsyche (Hydropsychidae: Trichoptera)

Nice mug shot..

Drunella

Drunella spp. showing enlarged femurs and frontoclypeal projections

Do you even flex, bro?
Drunella spp. (Ephemeroptera: Ephemerellidae) #macroinvertebrates #Ephemeroptera #mayflies #FlexFridays

Do you want to test your knowledge of freshwater trivia?? We are hosting a zoom trivia event on December 4th at 7 pm EST. Please use the following link to register for the event! shorturl.at/fBqCv