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2:00 PM
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3:00 PM
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Coping with Loss Support Group
- Location: Online
- Cost: FREE
- Contact: Counseling Center
- Description: Grief and loss are common experiences that many of us share. We can grieve over many different losses, including the loss of a loved one, the loss of social connections, the loss of a pet, the loss of a job, the loss of our sense of self, etc. Although these experiences are common to most of us, grief and loss can feel isolating, lonely, and overwhelming, particularly during the
COVID-19 pandemic when social connections are already limited. If you have experienced, or are currently experiencing, any type of grief and loss, you may benefit from joining the Coping with Loss Support Group. This group is open to all UMass Dartmouth students and is a space for students to support each other and discuss their feelings and experiences with grief and loss.
If interested in joining, please contact Nancy Harper, LICSW: nharper@umassd.edu or Meghan Silvia, MA: msilvia4@umassd.edu or contact that Counseling Center at (508) 999-8648 for more information.
When: Thursdays, 2pm-3pm
Starting February 17, 2022
Zoom Information: https://umassdhipaa.zoom.us/j/98754963259
Meeting ID: 987 5496 3259
Passcode: 099338
- Topical Areas: Students, Students, Graduate, Students, Law, Students, Undergraduate
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10:00 AM
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11:00 AM
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Department of Estuarine and Ocean Sciences MS Thesis Defense by Neeharika Verma
- Location: > See description for location
- Contact: > See Description for contact information
- Description: The School for Marine Science and Technology
Department of Estuarine and Ocean Sciences
MS Thesis Defense
"Characterization of Optical Properties and Relationships to Phytoplankton Size Class and Particulate Composition in the Northern Gulf of Mexico"
By
Neeharika Verma
Advisor
Steven Lohrenz, School for Marine Science and Technology, University of Massachusetts Dartmouth
Committee
Cynthia Pilskaln, School for Marine Science and Technology, University of
Massachusetts Dartmouth
Cedric G. Fichot, Department of Earth and Environment, Boston University
Thursday, May 5, 2022
10:00 am to 11:00 am
SMAST East, Rooms 101/102
836 S. Rodney French Blvd, New Bedford, MA
and via Zoom
Abstract
The characterization of particulate and phytoplankton community composition is crucial to our understanding of the interactions amongst ecological, biogeochemical, and physical processes in the ocean. Relationships between seawater constituents and their optical properties can be used to understand their composition in various oceanic conditions. By validating and using hyperspectral remote sensing reflectance measurements and derived estimates of phytoplankton absorption, this thesis first addresses the influence of physical and biogeochemical gradients on sub-km scale phytoplankton community composition across the river plume–ocean mixing zone in the northern Gulf of Mexico.
Our observations reveal the existence of localized regions of dominant picophytoplankton communities in an area of the coastal margin, which are otherwise characteristically dominated by larger microphytoplankton. Secondly, this thesis examines relationships of backscattering and other inherent optical properties to particle composition, including chlorophyll concentrations and associated pigment proxies for phytoplankton size classes. Optical measurements across horizontal and vertical spatial scales included those acquired from in situ instrumentation and analyses of discrete water samples as well as values retrieved from hyperspectral radiometry. We demonstrate that the relationship between backscattering measurements, such as particulate backscattering and the backscattering ratio, and chlorophyll provide empirical support for the optical retrieval of particulate and phytoplankton community composition. Absorption and backscattering measurements are of primary significance to applications of
optical remote sensing in the ocean, and the use of such information along with in situ particulate and phytoplankton composition and pigment concentration data is crucial to our understanding of oceanic biogeochemical processes. Our findings and the novel data set presented here add to a growing body of literature on the use of inherent optical properties to discern characteristics of various biogeochemical constituents in optically complex coastal and open ocean waters.
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Meeting ID: 994 1304 3753
Passcode: 334890
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For additional information, please contact Sue Silva at s1silva@umassd.edu
- Topical Areas: School for Marine Sciences and Technology, SMAST Seminar Series
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