Events

The School for Marine Science and Technology Department of Estuarine and Ocean Sciences Seminar Announcement "Closing the Coastal Primary Production Budget: Air-Sea, Water Column, and Benthic Interactions" Dr. Matthew H. Long Marine Chemistry & Geochemistry Department Woods Hole Oceanographic Institution Woods Hole, Massachusetts Wednesday, October 24, 2018 12:30 pm - 1:30 pm SMAST East, Rooms 101/102 836 S Rodney French Blvd, New Bedford Abstract: Closing the oxygen mass balance in shallow coastal ecosystems is challenging due to the first-order importance of oxygen flux both within the water column and across the atmosphere-water and sediment-water boundaries. This study evaluated the oxygen budget in two contrasting oligotrophic ecosystems that are typically defined by the dominant benthic community; a Zostera marina seagrass meadow in Virginia, USA, and a sub-tropical coral reef in Bermuda. Benthic fluxes were evaluated by oxygen eddy covariance, water column fluxes where measured via a new automated water incubation system, and atmosphere-water fluxes were estimated by parameterizations based on either wind speed or turbulent kinetic energy dissipation rates. Hourly fluxes revealed significant temporal variations in all measured rates and the integrated rates revealed an approximately equal contribution of benthic and water column fluxes to the oxygen mass balance, despite the apparent dominance of the benthic communities in oligotrophic water. Atmosphere-water fluxes were a major short-term component in the shallow (~1.5m) seagrass meadow, driven by large magnitude diel atmosphere-water oxygen gradients while the deeper (~7.5m) reef site had small but consistent atmosphere-water fluxes due to persistent oxygen under-saturation. The large spatial extent of homogenous benthic communities and water depths, combined with long-residence time water, resulted in no detectable effect of horizontal advection at the study sites. Importantly, when the fluxes were integrated throughout the water column, the measured rates accurately predicted the observed time rate change of oxygen in the water column and provide an accurate, high temporal resolution closure of the oxygen mass balance for coastal ecosystems. To access the live broadcasting, go to https://echo360.org/ and click on "Alternate login". You will have to login as "smast@umassd.edu" with the password: smastumassd. After login you will have to click on ALL CLASSES (MAR 700-01 - DEOS Seminar or MAR 700-02 - DFO Seminar) and click on the green LIVE streaming. To view a video of an SMAST seminar (post-October 1, 2014), go to https://www.umassd.edu/smast/events/seminar-series/ and click on a highlighted title. For additional information, please contact Sue Silva at s1silva@umassd.edu.

Department of Fisheries Oceanography Climate-induced shifts in phenology: Case studies of fish, whales, and seabirds in the Gulf of Maine Michelle D. Staudinger, Ph.D. Science Coordinator, DOI Northeast Climate Adaptation Science Center Adjunct Assistant Professor, Department of Environmental Conservation University of Massachusetts Amherst Wednesday, October 24, 2018 2:30 - 3:30 pm SMAST-E rm. 101/102 836 South Rodney French Boulevard, New Bedford, MA Abstract: Marine communities in the Northwest Atlantic Ocean have strong seasonality, and the Gulf of Maine (GOM) supports a range of highly migratory species that coincide the timing of recurring life events with preferred conditions and peaks in forage. The timing and intensity of seasonal warming and cooling cycles have undergone significant shifts and are associated with regional oceanographic and atmospheric patterns. This talk will explore and contrast phenological responses to climate drivers across functional groups through three case studies in the GOM: 1) spring spawning migration of anadromous alewife (Alosa pseudoharengus), 2) patterns in habitat use of North Atlantic right (Eubalaena glacialis) whales, and 3) spring-summer foraging conditions and productivity of nesting seabirds (Sterna sp.). Overall phenological responses vary among species in strength, directionality, and spatial coherence as well as in relationship to different seasonal environmental drivers. This study provides new information on how higher trophic level species are responding to climate change through annual and seasonal variability, and considers the ecological and management implications in terms of resource mismatches and interactions with human activities. To access the live broadcasting, go to https://echo360.org/directLogin you will have to login as smast@umassd.edu with the password: smastumassd After logging in, you will have to click on ALL CLASSES (MAR 700-01 - DEOS Seminar or MAR 700-02 - DFO Seminar) and click on the green LIVE streaming. To view a video of an SMAST seminar (post October 1, 2014), go to https://www.umassd.edu/smast/events/seminar-series/ and click on a highlighted title. For more information, please contact cfox@umassd.edu

Department of Fisheries Oceanography Climate-induced shifts in phenology: Case studies of fish, whales, and seabirds in the Gulf of Maine Michelle D. Staudinger, Ph.D. Science Coordinator, DOI Northeast Climate Adaptation Science Center Adjunct Assistant Professor, Department of Environmental Conservation University of Massachusetts Amherst Wednesday, October 24, 2018 2:30 - 3:30 pm SMAST-E rm. 101/102 836 South Rodney French Boulevard, New Bedford, MA Abstract: Marine communities in the Northwest Atlantic Ocean have strong seasonality, and the Gulf of Maine (GOM) supports a range of highly migratory species that coincide the timing of recurring life events with preferred conditions and peaks in forage. The timing and intensity of seasonal warming and cooling cycles have undergone significant shifts and are associated with regional oceanographic and atmospheric patterns. This talk will explore and contrast phenological responses to climate drivers across functional groups through three case studies in the GOM: 1) spring spawning migration of anadromous alewife (Alosa pseudoharengus), 2) patterns in habitat use of North Atlantic right (Eubalaena glacialis) whales, and 3) spring-summer foraging conditions and productivity of nesting seabirds (Sterna sp.). Overall phenological responses vary among species in strength, directionality, and spatial coherence as well as in relationship to different seasonal environmental drivers. This study provides new information on how higher trophic level species are responding to climate change through annual and seasonal variability, and considers the ecological and management implications in terms of resource mismatches and interactions with human activities. To access the live broadcasting, go to https://echo360.org/directLogin you will have to login as smast@umassd.edu with the password: smastumassd After logging in, you will have to click on ALL CLASSES (MAR 700-01 - DEOS Seminar or MAR 700-02 - DFO Seminar) and click on the green LIVE streaming. To view a video of an SMAST seminar (post October 1, 2014), go to https://www.umassd.edu/smast/events/seminar-series/ and click on a highlighted title. For more information, please contact cfox@umassd.edu