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CHESAPEAKE BIOLOGICAL LABORATORY | SOLOMONS, MDAUGUST 2023ISSUE 84Lab Lines1IN THIS ISSUE:DIRECTOR’S VIEW24SAFETY CORNER / IN THE NEWS61IN CASE YOU MISSED IT /NEW FACES/RECENT PUBLICATIONSConnuing on with transions here at CBL, we welcomed our Fall 2023 semester on August 23rd with an aernoon ice cream social with Bee’z Knees ice cream sandwiches. We bid farewell to our summer cohort of REU students who, together with the REUs from the Horn Point Lab gave nal presentaons of their research projects across campus on August 7th. Elaine Proctor has started her rerement journey aer a great send-o on August 17th that brought many past CBL’ers back to campus to celebrate with her. But with goodbyes, there are also hellos and we welcome to CBL a number of graduate students working in sheries and ecological sci-ences. Kylie Cherneskie has joined Dr. Bi and Dr. Liang’s labs and Lael Collins is connuing on in Dr. Wilberg’s lab. Matheus Ogasawara has joined Dr. Filoso’s lab as a vising doctoral student from Brazil. The search for the next UMCES President is underway (announced on August 10th) and the search commiee includes CBL members; Isabel Sanchez-Viruet, Lora Harris, and Mario Tamburri. Our Wednesday seminar series (11am BFL) has restarted. Join us on September 6th to hear all about ‘Aack of the sable sh’ and other highlights from Dr. Laura Lapham and Anna Hildebrand’s recent adventures on the R/V Atlans. The Open House plans are coming together, this has always been a highlight for me and our chance to bring together the CBL com-munity to showcase the beauful grounds, our facilies, and research and educaonal programs. If you haven’t already done so please sign up to volunteer for this event, maybe even join in some of the fun acvies! Other events are in the planning stages for this semester so please remember to check out the CBL events Gmail calendar.5DOLPHINWATCH

In Case You Missed It2Dr. Hongsheng Bi is parcipang in the NOAA AFSC Eco-FOCI fall mooring cruise in the Bering Sea, scheduled from August 15th to September 8th. Collaborang with colleagues from NOAA AFSC, their primary objecve is to con-duct nocturnal zooplankton sampling ulizing their advanced in situ plankton imaging system. Sampling will take place both around the Bering Canyon and on the shelf area. Their research focus is centered on understanding the impact of canyon-induced cross-isobath transports on the distribuon of krill within the southeastern Bering Sea. Addionally, a key component of their mission involves tesng the feasibility of swily assessing zooplankton pop-ulaons through the ulizaon of the PlanktonScope, accompanied by its cung-edge deep learning-based rec-ognion system. Plankton images will be processed on board immediately subsequent to their collecon. This will ensure that preliminary data on zooplankton abundance and sizes will be available as soon as the cruise concludes.Aer four years as Execuve Assistant to the CBL Director, Renee Arnold has accepted a new posion within CBL. She will now serve, alongside Mike Peters, as an addional Coordinator of Sponsored Programs. Renee completed her Master's in December 2022 and also holds a cercate of compleon from USM's ORAA cercaon program. Feel free to stop by her new oce in Mansue! Lee Cooper is a co-author of a paper published in Nature Geoscience on August 21, "Recent trends in the chemistry of major northern rivers signal widespread Arcc change," Nature Geoscience, which is an outcome of the Arcc Great Rivers Observatory (Arcc GRO) project funded by the Naonal Science Foundaon. The paper describes long-term changes in river biogeochemistry in the six largest Arcc rivers that contribute 10% of the earth's fresh-water runo to the Arcc Ocean. Among the ndings are a long-term decrease in nitrate concentraons in river runo that may have impacts on Arcc Ocean producvity, even as sea ice declines are expected to increase pro-ducon. Annually, CBL's stable isotope instrumentaon supports the long-term project through measurements of the stable isotopes of oxygen and hydrogen in the six major Arcc rivers.Lora Harris parcipated as an invited panelist in the American Geophysical Union's Advancing Jusce-Centered Community Science Discussion in early August. This panel was part of a retreat for a new program led by the Thriv-ing Earth Exchange to imagine and create new curriculum in higher educaon that supports community engage-ment with under-resourced communies around geoscience research.Slava Lyubchich aended the 2023 Smart Shellsh Aquaculture Summit in Grasonville, Maryland. The summit featured a boat tour of a local oyster farm (see photos). Lyubchich, Gray, and Silsbe also recently published online a report on machine learning analysis of producon yields at the Horn Point Oyster Hatchery, explaining the contribu-on of individual variables to high and low yields. URL: hps://rpubs.com/vlyubchich/hatchery

In Case You Missed ItThe Lapham lab just returned from their cruise oshore Oregon coast in the Pacic Ocean. The goal of the project is to follow methane-derived carbon through the shallow sediments and boom ocean waters. We used the human occupied vehicle named Alvin on the R/V Atlans to get sediment and water samples from a methane seep site. The weather was not in our favor but we were able to get a lot done. Graduate student Anna Hildebrand made her rst dive on Alvin and collected some very snky mud! FRA Maureen Strauss ran over 500 water samples on the ion chro-matograph during the very short cruise and summer REU student Maddie Glenna worked relessly to process samples collected. Everyone should ask Anna about the sable sh, they were a highlight of the cruise. Stay tuned to hear what the lab learned from this trip.3

New FacesSolange Filoso would like to share the news that she is hosng a doctoral student from Brazil in her lab for a few months. His name is Matheus Ogasawara and he is coming to CBL with support from the Sao Paulo Research Foundaon (FAPESP) through a program called Research Internships Abroad. This program supports short and medium-term research internships abroad for recipients of FAPESP fellowships in the State of São Paulo. Please welcome Matheus to CBL if you see him around!The new semester means new students. Lael Collins (not pictured) is transioning from a FRA to GRA with Dr. Wilberg and Kylie Cherneskie (picture - right) has joined UMCES as a new PhD student with Drs. Liang and Bi. N.S. Pereira, K.H. Kilbourne, R.K.P. Kikuchi, C.M. Chiessi, B.R. Pinheiro, M.M. Gregório, M.P. dos Santos, A.N. Sial (2023). Sr/Ca-temperature calibraon for the coral Montastraea cavernosa. Journal of South American Earth Sci-ences 129, hps://doi.org/10.1016/j.jsames.2023.104524. [UMCES Cont. No. 6314] Recent PublicationsDave Secor received the OE See Award for Outstanding Marine Fishery Biologist, presented by the Marine Fisheries Secon of the American Fisheries Society. His body of research in sh migraon, otolith applicaons and oshore wind studies was noted as was his record in graduate student mentorship and advisory work. With this honor, Dave joined a list of 30 other eminent US and Canadian sheries sciensts, including UMCES faculty Ed Houde and Kenny Rose, who have received this award since 1991.In Case You Missed ItSecor Lab group in 2007. Recognize anyone?4

Chesapeake DolphinWatch is in the middle of its 7th year collect-ing bolenose dolphin sighngs from Bay residents and visitors. Last year, DolphinWatch surpassed 13,000 registered app users who entered nearly 2,000 dolphin sighngs, our highest reporng rate on record! The most notable sighng locaons in 2022 were far north in the Upper Bay, especially in the Elk River and C&D Canal (see screenshot of app from 2022). This locaon is of par-cular interest as it may be a site for populaon mixing between the Northern Migratory Coastal Stock (DE Bay dolphins) & South-ern Migratory Coastal Stock (Ches. Bay dolphins). NOAA's most recent stock report (2020) demarcated the dierence in stocks at the southern p of Assateague Island (Virginia, see black and white map). We'll connue to keep a close eye on sighngs re-ported in this area to see if it was an anomalous year or becomes a common locaon.DolphinWatch5

Safety Corner: Electrical SafetyThe primary hazards of electrical equipment are electrocuon, shock, burns, explosions, res and falls due to improper use or poor maintenance. Our bodies oer low resistance to the ow of current which makes it easy for a person to be-come part of the electrical circuit, resulng in serious injury or death. Here are some guidelines to help you use electri-cal equipment safely in the laboratory. You should also be aware of any parcular electrical needs of your workspace to avoid any possibility of injury to personnel or overloading of the circuits.1. All wiring and connecons must be properly insulated to prevent contact with electrical current.2. Electrical equipment needs to be UL cered and not modied in some way.3. Inspect cords daily for damage. Replace any frayed or damaged cords.4. eep equipment away from water sources, sinks and ood zones. If there is an outlet near a sink, it should be a GFCI (ground fault circuit interrupter) outlet.5. Use only spark free equipment near ammables.6. Place equipment in areas to lessen any possibility of a spill onto it or vapors being carried into it.7. Always turn o or unplug power (from the wall, not the equipment) before doing any maintenance or repairs.8. Know the locaon of the circuit breaker panels and how to operate the shuto switch.9. Do not force a plug into an outlet. Use the proper receptacle/plug combinaon and do not use three-to-two prong adapters.10. Cords should not dangle from counters or hoods. They should also be in a place where they will not come into con-tact with hot surfaces.11. Avoid extension cord use if possible because equipment should be plugged directly into an outlet. Make sure the extension cord is the correct amperage for the device in use and place the cord where it will not be a trip hazard. If you are having to use extension cords or strip plugs regularly, you may need more outlets.12. Do not “daisy-chain” power strips or cords. This may cause the outlet to overheat and catch re.13. In the case of electrocuon – DO NOT TOUCH THE PERSON!! You will become part of the circuit. If it is possible, pull the plug from the outlet or got to the circuit breaker panel and push the shuto switch. If you have to, you can use non-conducve material such as a wooden broom handle to move the person from the source. Call 911.References and other sourceshps://ehs.research.uiowa.edu/electrical-safety-laboratoryhps://ehs.unc.edu/topics/electrical-safety/hps://www.drs.illinois.edu/Page/SafetyLibrary/ElectricalSafetyInTheResearchLaboratoryhps://www.safety.fsu.edu/safety_manual/Electrical%20Safety%20in%20the%20Laboratory.pdfhps://www.mynewlab.com/blog/guide-electrical-safety-lab/hps://www.osha.gov/sites/default/les/publicaons/OSHAquickfacts-lab-safety-electrical-hazards.pdfhps://www.labmanager.com/electrical-safety-in-the-lab-200596www.umces.edu/cbl | 410-326-4281P.O. Box 38 | 146 Williams Street | Solomons, MD 20688-0038In the News!UMCES’ Chesapeake Biological Laboratory Receives Transformave Gi To Study Contaminated Waterways (The Bay Net) University of Maryland Receives $1M Gi for Estuarine Research (Southern Maryland Chronicle)Click HERE!