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CHESAPEAKE BIOLOGICAL LABORATORY | SOLOMONS, MDAUGUST 2022ISSUE 72Lab Lines1IN THIS ISSUE:DIRECTOR’S VIEW235This is always an exciting time of year at CBL – it is a period of transition. We say farewell to interns who have spent the summer with us, bringing their enthusiasm and energy to our research. This was particularly true this year as we returned to active research activities across the lab. We also said farewell to three graduate students – Sarah Jones, Stefenie Shenoy and Alex Gibbs who all successfully defended their MS degrees. But, August also sees us welcome new students and new faces to the lab. This year, we welcome 8 new graduate students who will be conducting research in the area of sheries, ecology and ecological economics. We also welcome 7 new CSM interns who will spend up to 100 hours with us this autumn exploring STEM careers with our faculty and students. As we think about these transitions, I encourage all of you to maintain and expand your engagement with the lab. We will oer in person seminars on Wednesday afternoons during the autumn semester in BFL 1101. Students and FRAs will have the opportunity to meet the speakers over lunch each Wednesday. This is a great opportunity to practice your pitches of what you do and why it is important. It is also a great opportunity to hear from researchers with dierent career paths. The seminar speakers cover a range of topics from microplastics to hydrology and from spatial ecology to emerging contaminants. The seminars start on September 21st, and will all be announced on the CBL events calendar. From Friday September 9th, we will again host the Friday Informal Lunchtime Lecture – so you can get your FILL. These too will be in person. For the rst week, we will have a discussion on the statement of mutual expectation and go over business oce practices. After that, I hope many of our students, FRAs and faculty will sign up to give seminars. Finally, on September 12, Bagel Mondays will return. This is a great opportunity to get to know everyone at the lab. I look forward to seeing you there.OUTREACHIN CASE YOU MISSED IT/ PUBLICATIONS4SAFETY CORNER

In Case You Missed ItKohma Arai and David H. Secor (CBL) gave an oral presentation at the 152nd Annual American Fisheries Society (AFS) Meeting, Spokane, WA. Presentation details: Arai K, Best JE, Craig CA, Secor DH. “Hudson river striped bass recruitment to “extra” nurseries.” Lauren Rodriguez traveled to West Palm Beach for the Society for Marine Mammals conference at the beginning of August to attend a professional-development workshop focused on environmental DNA as well as present a talk about Chesapeake DolphinWatch.Mike Wilberg was recently appointed to the International Whaling Commission's Scientic Committee conveners group in the capacity of co-convener (i.e., co-chair) of the sub-committee on Implementation Simulation Trials. This is the group that conducts and reviews simulation studies to inform subsistence and commercial harvest of large ceta-ceans. Mike Wilberg was in Honolulu, Hawaii Aug. 1-5 for an international crustacean shery science and management meeting that included participants from the U.S., China, the Philippines, and Indonesia.

In Case You Missed It Cont.PublicationsCooper, L.W.; Magen, C.; Grebmeier, J.M. Changes in the oxygen isotope composition of the Bering Sea contribution to the Arctic Ocean are an independent measure of increasing freshwater uxes through the Bering Strait. PLoS ONE 2022, https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0273065. (UMCES Contribution No. 6207)Cooper, L.W.; Grebmeier, J.M.. A chlorophyll biomass time-series for the Distributed Biological Observatory in the context of seasonal sea ice declines in the Pacic Arctic region. Geosciences 2022, 12 https://doi.org/10.3390/geosciences12080307. (UMCES Contribution No. 6208)Grebmeier, J.M. Applying understanding of Earth systems, including climate change, to exploration of other ocean worlds. Oceanography 2022, 35, 45-53, doi: https://doi.org/10.5670/oceanog.2021.413. (UMCES Contribution No. 6206)Arai K. and Lyubchich V. (2022) “Book review: Modern Data Science with R (2nd ed.).” Technometrics 64:3, 429. (https://doi.org/10.1080/00401706.2022.2087421) (UMCES Contribution No. 6199)Dave Secor has recently contributed to a variety of news articles discussing the potential impacts that a proposed massive salmon farming facility would have on the endangered Atlantic sturgeon, which spawns in the Marshyhope Creek. https://www.washingtonpost.com/local/proposed-salmon-farm-stirs-concern-for-last-of-md-sturgeon/2022/08/16/504a560c-1c2f-11ed-8d30-84c409e82eb3_story.html https://www.marylandmatters.org/2022/08/08/opinion-aquacons-proposed-industrial-salmon-farm-represents-a-major-environmental-risk-for-maryland/ https://www.baltimoresun.com/opinion/op-ed/bs-ed-op-0821-aquacon-sturgeon-20220818-atgslkl3rfd35hh22epqbesvyi-story.htmlUMCES student Nicholas Coleman and MD DNR scientist Matt Baldwin release a tagged Atlantic sturgeon into the Marshyhope Creek. Named “Igor” this sh has been detected every fall for the past 8 years, participating in the Marshyhope Creek spawning run. Photo taken by Ashlee Horn (MD DNR) September 15, 2021.

PHYSICAL HAZARDS (excerpted from OSHA 29 CFR 1910.1200)Physical hazard is a material that is classied as posing one of the following hazardous eects: explosive; ammable (gases, aerosols, liquids, or solids); oxidizer (liquid, solid or gas); self-reactive; pyrophoric (liquid or solid); self-heating; organic peroxide; corrosive to metal; gas under pressure; or in contact with water emits ammable gas (29CFR 1910.1200—Physical Hazard Criteria).Some chemicals have both health and physical hazards associated with them. Physical hazards are the most common and will be present in most workplaces at one time or another. They include unsafe conditions that can cause injury, illness and death.Physical hazards may manifest as res, explosions, excessive temperatures, or the release of large volumes of gas or toxic or ammable gases or vapors.DenitionsThe auto ignition temperature or kindling point of a substance is the lowest temperature at which it will spontaneously ignite in a normal atmosphere without an external source of ignition, such as a ame or spark.Compressed gas causes asphyxiation, re, explosions, and can penetrate the skin like a needle injection.The ash point of a volatile material is the lowest temperature at which it can vaporize to form an ignitable mixture in air. Measuring a ash point requires an ignition source. The lower the ashpoint the more dangerous it is. Gasoline is more ammable than diesel. Gasoline will ignite from negative 45°F and upwards. Whereas, diesel needs to be at 144°F before it will ignite. Materials that have a ashpoint below 100 degrees Fahrenheit (38⁰C) are considered ammable. Materials with a ashpoint between 100⁰F -200⁰F are considered combustible. FUEL FLASH POINT AUTO-IGNITION TEMP.GASOLINE 43°C (-45°F) 280⁰C (536⁰F)ETHANOL 70% 16.6°C (61.9°F) 363⁰C (685⁰F)DIESEL >62°C (144°F) 210⁰C (410⁰F)JET FUEL > >60°C(140°F) 210⁰C (410⁰F)KEROSENE >38°-72°C (100-162°F) 220⁰C (428⁰F)VEGETABLE OIL 327°C (621°F)BIODIESEL >130°C (266 °F)An explosive material causes a sudden almost instantaneous release of pressure, gas, and heat when subjected to sudden shock, pressure, or high temperature. The lower explosion limit (LEL) or lower ammable limit (LFL) is the lowest concentration of vapor in air which will burn or explode upon contact with a source of ignition. Below the LEL/LFL, the mixture is too lean (i.e. there is insucient fuel) to burn or explode. The upper explosion limit (UEL) or upper ammable limit (UFL) is the highest concentration of vapor in air, which will burn or explode upon contact with a source of ignition. Above the UEL, the mixture is too rich (i.e. there is insucient oxygen) to burn or explode. The LEL and UEL are usually indicated by the percentage by volume of vapor in air. Example - For diethyl ether, the LEL is 1.9% and the UEL is 36% by volume of air. The range between 1.9% and 36% is the dangerous range of diethyl ether.FUEL LEL/LFL % UEL/UFL %Acetaldehyde 4 60Ethyl Alcohol 3 19Benzene 1.35 6.65Gasoline 1.4 7.6Fuel Oil 0.7 5Hydrogen sulde 4.3 46Toluene 1.27 6.75Oxidizers bring about an oxidation reaction causing a re of itself or through the release of oxygen or other gases.Pyrophoric materials will ignite spontaneously in air at 1300F or below without an ignition source.Reactive chemicals cause damage by the release of gases that will burn, explode, or produce high pressure that can cause injury to a person. Organic peroxides, unstable materials, and water-reactive materials are examples of reactive chemicals.Source: P:\SAFETY\PLANS & POLICIES\RTK Training Docs\2017scienceRTK

CBL Visitor Center – Volunteer RecruitmentThe Chesapeake Biological Laboratory is recruiting volunteers from the Southern Maryland community to serve as docents in our Visitor Center! The CBL Visitor Center provides guests with the opportunity to learn about cutting-edge research being pioneered by CBL’s team of faculty, sta, and student scientists on Solomons Island. CBL’s dedicated Visitor Center docents serve a vital role in explaining our research to the public and helping guests understand the importance of the work we do. Simply put, they help CBL raise public awareness of who we are, what we do, and why it is important.Volunteer docents independently run the CBL Visitor Center! They are responsible for:• Opening and closing the Visitor Center • Playing a welcome video for guests• Educating guests about CBL and its associated research, education, and outreach eorts • Interpreting exhibits for visitors• Providing general information about Solomons Island• Managing and recording sales of Visitor Center merchandise• Maintaining adequate supply of handout materials on displayVisitor Center Docents must be age 18 or older, willing to work with a partner or in small groups, and are outgoing, polite, & personable. Volunteers should also be interested in the Chesapeake Bay, scientic research, and/or public education. Training will be provided prior to a rst volunteer shift. Click here to learn more about the CBL Visitor Center Volunteer Program.If you know a community member who would like to join the docent team, or if you would like to continue to volunteer this fall, please contact Sarah Brzezinski at brzezins@umces.edu.A Volunteer Orientation Training Session is scheduled for August 30th.www.umces.edu/cbl | 410-326-4281P.O. Box 38 | 146 Williams Street | Solomons, MD 20688-0038OutreachExhibit & Sign DevelopmentNew exhibits and interpretive materials are coming to the CBL Visitor Center! Aquarium sh ID signs and a watershed model have been installed. Panels and booklets about the watershed and water quality are in development. Additionally, a wall mural about plastic marine debris will be designed. Fabrication of a new campus sign highlighting the historic decline of bay grasses around Solomons Island is scheduled for completion in September.