Seminars – Page 5 – Moss Landing Marine Laboratories

Virtual Seminar – Edible particles, inedible particles, and the development of the feeding larvae of marine invertebrates – April 21st

March 29, 2022April 25, 2022Taylor Azizeh

Bruno Pernet is a Professor of Biological Sciences at CSU Long Beach, where he studies the development, functional morphology, and evolution of the larvae of marine invertebrates. He earned a B.A. in Biology from UC Santa Cruz, then a Ph.D. in Zoology from the University of Washington. After postdoctoral research at the Smithsonian Marine Station at Fort Pierce, Florida, he spent several years teaching and doing research at the Oregon Institute of Marine Biology and the Friday Harbor Marine Laboratories before starting his position at CSU Long Beach.

Virtual Seminar – The impact of microbial production of organic ligands on the cycling of iron in seawater – April 14th

March 28, 2022April 18, 2022Keenan Guillas

Randie studies trace metal biogeochemistry in seawater, with a focus on how organic compounds impact their global cycling. Her research has taken her on many research cruises, ranging from the tropics to the poles. She did her PhD at Scripps Institution of Oceanography, followed by her postdoc at Woods Hole Oceanographic Institution. She is now an Assistant Professor in the School of Oceanography at the University of Washington. In her free time she is an avid surfer, loves outdoor activities of any kind, and reading.

Virtual Seminar – Revealing the hidden diversity, abundance, and feeding interactions at the base of aquatic food webs – April 7th

March 25, 2022April 12, 2022Taylor Azizeh

Dr. Michelle Jungbluth is currently a Researcher at the San Francisco State University's Estuary and Ocean Science Center. She has a Bachelor's Degree in Biology from the University of Wisconsin Madison, and a M.S. and Ph.D. in Oceanography from the University of Hawai'i at Mānoa. After completing her Ph.D. she began exploring the complexities of food webs and wetland ecology in the San Francisco Estuary in the lab of Dr. Wim Kimmerer and continues there to this day.She is an ecologist, naturalist, oceanographer and marine biologist interested in the phenomena occurring at the base of aquatic food webs. In her career as a scientist she has focused on studies involving mainly zooplankton - the animals that "drift" in the sea. But they aren't just passive particles, they have unique behaviors that make them very interesting and important members of ecosystems. Her technical expertise includes characterizing life in marine and estuarine ecosystems through DNA barcoding, quantitative PCR-based studies of animal life history and food web connections, and next-generation DNA sequencing. She has also dabbled in DNA barcoding of deep-sea larval invertebrates, which is a location where we know almost nothing about organism diversity and even less about larval ecology.

Virtual Seminar – How to survive a shark attack: lessons from hagfish – March 24th

March 24, 2022March 30, 2022Keenan Guillas

Virtual Seminar – Phytoplankton compositional shifts as indicators of oceanographic change in Central California – March 17th

March 17, 2022March 24, 2022Taylor Azizeh

Alexis Pasulka is an Assistant Professor at Cal Poly, San Luis Obispo. Her research explores a diversity of questions related to the composition, distribution, and interactions of marine microorganisms. By using environmental gradients over time or space, she aims to can gain insight into how organisms at base of the food web might respond to a changing climate. Alexis’ research integrates field and lab-based studies as well as multiple complimentary approaches (e.g., microscopy, molecular, and geochemical techniques). She received her BS in Biology from Arizona State University and her PhD in Biological Oceanography from Scripps Institution of Oceanography.

Virtual Seminar – The influence of oceanographic and environmental features on plankton and seabird communities in the North Pacific- March 10th

February 13, 2022March 14, 2022Taylor Azizeh

Caitie’s research is centered on understanding the direct and indirect effects of oceanic and climatological forcing on the energy balance, movement patterns, and distributions of marine organisms. She earned her Ph.D. in Ocean Science from the University of California Santa Cruz, where she studied the ecophysiology of sub-Antarctic albatrosses and co-founded a science communication group. She then joined the Farallon Institute as a postdoctoral researcher, where she explored the effects of marine mesoscale eddies on structuring plankton and seabird communities and used spatial-temporal models to map seabird distributions for oil-spill risk assessment. She recently joined MLML as a postdoctoral researcher in the Vertebrate Ecology Lab where she’s investigating the foraging ecology and habitat use of emperor penguins.

Virtual Seminar – Molecular ecology and evolution of Eastern Pacific reef fishes – March 3rd

February 12, 2022March 24, 2022Taylor Azizeh

Seminar abstract:

Giacomo Bernardi’s lab at the University of California Santa Cruz focuses on speciation in fishes, primarily using genomic tools. His work uses population genetic, phylogeographic and molecular ecological approaches on Pacific, Atlantic, and Mediterranean fishes. Giacomo Bernardi also contributes to Long Term Ecological studies on tropical fishes in French Polynesia and Micronesia. His work in Micronesia includes a strong component of work driven by indigenous people to address together reef health issues.

Virtual Seminar – When the Fast Beats the Furious: How tiny diatoms can change the world – Feb 17

February 11, 2022March 24, 2022Keenan Guillas

Seminar abstract:

Silica diagenesis is arguably one of the most important diagenetic processes in marine sediments since it causes regional-scale changes in the structure of the shallow lithosphere. In this seminar I will present for the first time the results of a recent (2019) deep-sea drilling expedition (IODP Expedition 385) of the R/V JOIDES Resolution to the northern region of the Guaymas Basin (GB) in the Gulf of California, a nascent, young ocean. The analysis of the cores recovered by the expedition at three of the drill sites unveils a new and somewhat unexpected picture of the relationships between export of amorphous silica (opal-A in diatom tests) under extremely productive surface waters, very fast burial of diatom ooze (up to 1m/kyr) at super-high geothermal gradients (~220–510 °C/km), and silica diagenesis (mainly the transformation of opal-A to the mineral form opal-CT). Thanks to modern drilling technology and collection of in situ temperatures we have discovered that in this basin amorphous opal-A diatom tests are preserved at much greater depths than we expected, where ambient temperatures are as high as ~80ºC which is more than ~30ºC higher than ever reported in other ocean settings, rock outcrops or hypothesized by kinetic studies. We suggest that the high temperature for silica diagenesis could be the result of the superfast sedimentation rates that outpace the time amorphous silica requires to recrystallize: in biosiliceous (diatom-rich) basins such as GB, the depth of the opal-A to opal-CT boundary is not just a function of the geothermal gradient but also of sedimentation rates and we present a conceptual model whereby similar depths of this silica-phase change are expected in deposition areas with different geothermal gradients if the hotter (sub)basin has the higher sedimentation rate. The second important finding of the expedition is that massive sill intrusions of magma split the opal-CT zone, not only suggesting that the sill formation postdates the silica phase change, but also that this diagenetic interface controls the way magma moves in the GB subseafloor whereby the opal-A/opal-CT transition zone as major physical anisotropy in the sedimentary column to reroute magma from vertical to lateral movement. This study establishes a fascinating connection between seemingly disconnected processes in the natural world: surface water biological productivity and crustal architecture of a newborn ocean. If surface water productivity in the GB was less extensive than it has been during the Pleistocene, the opal-A to opal-CT boundary would have occurred at much shallower depths, possibly allowing magmatic eruption and formation of seafloor basalts which is presently absent.

Virtual Seminar – What lies beneath: Internal waves in the nearshore coastal environment – Feb 10

January 2, 2022February 11, 2022Taylor Azizeh

About the speaker:

Ryan Walter received his B.S. degree from Cornell University, and his M.S. and Ph.D. from Stanford University in Environmental Engineering. His research interests are in the field of environmental fluid mechanics, and involve the application of fluid mechanics principles to the study of flow and transport processes in the environment. His research focuses on the interdisciplinary nature of environmental fluid mechanics, specifically how various physical processes affect ecosystem health and biological processes in coastal systems. His current research projects include investigating shallow water internal wave dynamics, circulation and transport processes in upwelling bays, nearshore dissolved oxygen dynamics, scenarios for offshore wind energy along the California coast, and the role that estuarine hydrodynamics play in shaping seagrass systems in a local estuary. He also runs an ocean observing network along the Central California Coast.

Virtual Seminar – Recent lessons from gelatinous zooplankton – February 3rd

December 4, 2021March 4, 2022Taylor Azizeh

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Bruno Pernet, California State University Long Beach

Presenting: "Edible particles, inedible particles, and the development of the feeding larvae of marine invertebrates"

Randie Bundy, University of Washington

Presenting: "The impact of microbial production of organic ligands on the cycling of iron in seawater"

Dr. Randie Bundy Presents: The impact of microbial production of organic ligands on the cycling of iron in seawater

Michelle Jungbluth, San Francisco State University

Presenting: "Revealing the hidden diversity, abundance, and feeding interactions at the base of aquatic food webs"

Dr. Michelle Jungbluth Presents: Revealing the hidden diversity, abundance, and feeding interactions at the base of aquatic food webs

Doug Fudge, Chapman University

Presenting: "Biochemistry of hagfish slime"

Alexis Pasulka, California Polytechnic State University SLO

Presenting: "Phytoplankton compositional shifts as indicators of oceanographic change in Central California"

Caitie Kroeger, Moss Landing Marine Laboratories/Farallon Institute

Presenting: "The influence of oceanographic and environmental features on plankton and seabird communities in the North Pacific"

Giacomo Bernardi, University of California Santa Cruz

Presenting: "Molecular ecology and evolution of Eastern Pacific reef fishes"

Giacomo Bernardi Presents: Molecular ecology and evolution of Eastern Pacific reef fishes

Ivano Aiello, Moss Landing Marine Laboratories/San Jose State University

Presenting: "When the Fast Beats the Furious: How tiny diatoms can change the world"

Ivano Aiello Presents: When the Fast Beats the Furious: How tiny diatoms can change the world

Ryan Walter, California Polytechnic State University - SLO

Presenting: "What lies beneath: Internal waves in the nearshore coastal environment"

Casey Dunn, Yale University

Presenting: "Recent lessons from gelatinous zooplankton"