Jon Sweetman @jonsweetman.bsky.social · 27/03/2026Out sampling ponds this morning with my aquatic invertebrate class. Lots of Chaoborus (phantom midges). 0307
Jon Sweetman @jonsweetman.bsky.social · 20/02/2026#Macroinvertebrate for this week: Chimarra (Trichoptera: Philopotamidae) a net-spinning caddisfly collected from Centre County, PA. T-shaped labrum; assymetrical notch on frontoclypeus and long slender process on coxa of foreleg.. #caddisflies 020
Jon Sweetman @jonsweetman.bsky.social · 12/02/2026Below are images of Ephemera (Ephemeroptera:Ephemeridae), who often contruct U-shaped burrows in depositional substrates. Note the forked frontal process.. #Ephemeroptera 2/6 171
Reposted by Jon SweetmanDonna Giberson (Elbows UP!) 🇨🇦🇺🇦 @donnag.bsky.social · 11/02/2026see also: diptera.de/CNC_Diptera/diptera.deTermination Diptera unit CNC OttawaHelp the Diptera unit at CNC!!! 036
Jon Sweetman @jonsweetman.bsky.social · 16/01/2026New semester, first lab of my aquatic invertebrate class. Had students looking through some old samples today with Mason Ward’s help @masonsward.bsky.social. Had a beautiful Philopotamidae specimen: Chimarra spp. in a sample from half Moon Creek, PA #macroinvertebrates #Trichoptera 062
Reposted by Jon SweetmanChristine M. Cornish, PhD @cmcornish.bsky.social · 22/12/2025Happy Yule to me and co-authors Marinus Otte and @jonsweetman.bsky.social!! Final PhD chapter out in @restorationecology.bsky.social Read about microbial communities in restored and natural wetlands in ND this holiday season 😊 doi.org/10.1111/rec....doi.orgSediment microbial communities in long‐term wetland restorations within the Prairie Pothole Region of the United StatesHydrologic wetland restoration in the Prairie Pothole Region is a common management practice to facilitate habitat and ecosystem recovery after degradation or drainage. Little is known about the reco... 051
Reposted by Jon SweetmanJill Hamilton @jillahamilton.bsky.social · 12/12/2025I just got off an extremely depressing call with my amazing Canadian collaborators at Natural Resources Canada who are facing cuts, retirement buy-outs, and layoffs for biologists across the board. This just seems a slap in the face to scientists in Canada. 2389
Reposted by Jon Sweetmanfreshwater fELA 🇨🇦 @not-klaatu.bsky.social · 05/12/2025This seems like kind of a big deal given the tumultuous history involved... www.cbc.ca/news/health/...cbc.caJournal retracts influential glyphosate safety study from 2000 | CBC NewsAn influential research article that claimed a popular weed-killer was safe has been retracted 25 years after it was published, prompting environmental groups in Canada to ask the federal government t... 022
Jon Sweetman @jonsweetman.bsky.social · 10/06/2025Severe thunderstorm and tornado warning this evening. We will see how our floating emergence traps fare.. the joys of outdoor mesocosms! @masonsward.bsky.social 391
Reposted by Jon SweetmanThe Ricciardians @ricciardilab.bsky.social · 27/05/2025www.biographic.com/a-home-made-...biographic.comA Home Made of Microplastics - bioGraphicCaddisfly cases from museum collections reveal that microplastics infiltrated “pristine” freshwater environments far earlier than suspected. 051
Reposted by Jon SweetmanFiona Mathews @fionamathews.bsky.social · 23/05/2025Plastic 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.socialbbc.co.ukPlastic in every level of food web, say Sussex scientistsThe university study analyses more than 580 invertebrate samples from 51 sites across Sussex. 02212
Jon Sweetman @jonsweetman.bsky.social · 22/05/2025Thanks for a great meeting @freshwaterscience.bsky.social! 1132
Reposted by Jon SweetmanMatthew A. Barnes @drbarnes.org · 21/05/2025Party on! Really enjoyable talk by Mason Ward about invertebrate residents of vernal ponds and their determinants at #sfs2025 1101
Jon Sweetman @jonsweetman.bsky.social · 07/05/2025Setting up and filling mesocosms today with @masonsward.bsky.social M 071
Jon Sweetman @jonsweetman.bsky.social · 26/04/2025Pulling mesocosm tanks out of storage and cleaning them in preparation for summer experiment! Quill was happy to come out and help.. 150
Reposted by Jon SweetmanSociety for Freshwater Science @freshwaterscience.bsky.social · 23/04/2025📣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... 189
Reposted by Jon SweetmanMiguel A Gómez Serrano @gomezserrano-ma.bsky.social · 13/04/2025Freshwater 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... 151
Jon Sweetman @jonsweetman.bsky.social · 03/04/2025Crane fly larvae (Tipulidae) Nice big chonker (technical term).. 060
Jon Sweetman @jonsweetman.bsky.social · 03/04/2025Sampling aquatic invertebrate substrate cages with PhD student Ibrahim Fagbohun and colleague Dan Allen in Maryland today. A little drizzly but otherwise good field day! 071
Jon Sweetman @jonsweetman.bsky.social · 21/03/2025Eubranchipus vernalis (Branchiopoda: Anostraca). eastern fairy shrimp #macroinvertebrates #fairyshrimp 2151
Jon Sweetman @jonsweetman.bsky.social · 21/03/2025Happy Spring! Fairy shrimp (Eubranchipus vernalis) are hatching in the local vernal ponds 082
Jon Sweetman @jonsweetman.bsky.social · 30/01/2025A 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 180
Reposted by Jon SweetmanNOAA Climate.gov @climate.noaa.gov · 28/01/2025Welcome 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.climate.govClimate.gov HomeScience & information for a climate-smart nation 29645114
Jon Sweetman @jonsweetman.bsky.social · 17/01/2025Winter sampling with my aquatic invertebrate ecology class! Always impressed in how diverse and abundant these streams are in the winter. 0142
Jon Sweetman @jonsweetman.bsky.social · 02/01/2025Happy New Year! A couple pictures of an Ameletus spp, the comb-mouthed minnow mayfly. (Ephemeroptera: Ameletidae) 0163
Reposted by Jon SweetmanDonna Giberson (Elbows UP!) 🇨🇦🇺🇦 @donnag.bsky.social · 02/12/2024Let's get #MayflyMonday going! Here's a pretty little Epeorus from Yukon in northern Canada. 183
Jon Sweetman @jonsweetman.bsky.social · 02/12/2024Mayfly gills are amazingly diverse. Often the fragile gills of Family Leptophlebiidae fall off in preserved specimens, but sometimes their relatively intact #mayflymonday #Ephemeroptera #macroinvertebrates 270
Reposted by Jon SweetmanAndrea Kirkwood (she/her) @kirkwoodlab.bsky.social · 29/11/2024MSc 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 073
Reposted by Jon SweetmanDr. Dawn Wright @deepseadawn.bsky.social · 27/11/2024"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...nature.comHow to stop plastic pollution: three strategies that actually workCountries are meeting to agree the first ever global treaty on curbing plastic pollution. Research suggests where bans and incentives can make a difference. 37517
Reposted by Jon SweetmanDarrin Hunt @benthicbuddy.bsky.social · 28/11/2024Our 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 7209
Jon Sweetman @jonsweetman.bsky.social · 27/11/2024Hydropsyche (Hydropsychidae: Trichoptera). Drawing from Wiggins, 1996.. 193
Jon Sweetman @jonsweetman.bsky.social · 22/11/2024Do you even flex, bro? Drunella spp. (Ephemeroptera: Ephemerellidae) #macroinvertebrates #Ephemeroptera #mayflies #FlexFridays 2130
Reposted by Jon SweetmanSFS Students @sfs-src.bsky.social · 21/11/2024Do 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 01210
Jon Sweetman @jonsweetman.bsky.social · 22/11/2024Mayfly larvae from Family Siphlonuridae (Ephemeroptera), central Pennsylvania, USA #macroinvertebrates #Ephemeroptera 181
Jon Sweetman @jonsweetman.bsky.social · 22/11/2024Job Alert! My Department in Ecosystem Science & Management at Penn State University is also currently hiring two TT positions . Please spread widely. Assistant Professor of Forest Ecophysiology tinyurl.com/yc7xtbs2 Assistant Professor of Soil-Water Interactions tinyurl.com/2drjp2xn 046
Jon Sweetman @jonsweetman.bsky.social · 22/11/2024Job Alert: My Department At Penn State University is currently hiring a Department Head! Please share widely! Department Head, Department of Ecosystem Science and Management tinyurl.com/3ut96uwd 044
Jon Sweetman @jonsweetman.bsky.social · 18/11/2024Spot the stonefly larvae! #Plecoptera #MacroinvertebrateMonday 010
Jon Sweetman @jonsweetman.bsky.social · 18/11/2024Fieldwork sampling macroinvertebrates in streams outside of Baltimore in early November with new PhD student Ibrahim Fagbohun and my colleague Dan Allen. Seeing how our new substrate samplers work (filled with either rocks or Leaves). #macroinvertebrates #FallFieldwork 140
Reposted by Jon SweetmanScience Furs @scifurs.bsky.social · 25/10/2024Twenty years of microplastic pollution research—what have we learned? Science www.science.org/doi/10.1126/...science.orgTwenty years of microplastic pollution research—what have we learned?Twenty years after the first publication that used the term microplastic, we review current understanding, refine definitions, and consider future prospects. Microplastics arise from multiple sources,... 163
Jon Sweetman @jonsweetman.bsky.social · 18/11/2024Enjoyed a break from social media, but ready to reengage. Hi all! I’m a freshwater ecologist interested in understanding our impacts on aquatic ecosystems. 070