Department of Estuarine and Ocean Sciences Seminar
When: Wednesday,
October 21, 2015
12:30 PM
-
1:30 PM
Where: > See description for location
Description: The School for Marine Science and Technology
Department of Estuarine and Ocean Sciences
Seminar Announcement
Dissolved gas tracers of metabolism in a salt marsh pond: daily to seasonal time scales
Evan Howard
Marine Chemistry and Geochemistry
Woods Hole Oceanographic Institutions
Wednesday, October 21, 2015
12:30 pm - 1:30 pm
SMASTI, Room 204
706 S. Rodney French Blvd., New Bedford, MA
Abstract:
Salt marshes are globally distributed hotspots of biogeochemical cycling, and have large primary production and organic matter burial fluxes. Shallow (10s of cm deep) marshtop ponds cover large areas of salt marshes, and may change in extent and abundance with altered anthropogenic pressures. These environments are understudied compared to the grass covered marsh platform, and it is unclear how they contribute to marsh biological productivity or how a changing environment may alter primary production fluxes. Here, I present a time series of in-situ, natural abundance dissolved gas tracers in a salt marsh pond in Rowley, MA, over hourly to seasonal time scales. Community fluxes of gross primary production, net ecosystem metabolism, and respiration are evaluated. The novel triple oxygen isotope tracer is used to distinguish light an dark respiration; oxygen consumption in the light is shown to be much higher than in the dark in this system.
Note: Seminar will be simulcast to SMAST II, Room 325.
You can view the seminar live by logging into
https://echosystem.umassd.edu:8443/ess/portal/section/9f732442-8871-46c1-a9c1-d11db930bb39.
Please note: the earliest you will be able to log in is
15 minutes before the regularly scheduled time.
To view a video of an SMAST seminar (post-October 1st), go to
http://www.umassd.edu/smast/newsandevents/seminarseries/
and click on a highlighted title.
for additional information, please contact Sue Silva at s1silva@umassd.edu.
Department of Estuarine and Ocean Sciences
Seminar Announcement
Dissolved gas tracers of metabolism in a salt marsh pond: daily to seasonal time scales
Evan Howard
Marine Chemistry and Geochemistry
Woods Hole Oceanographic Institutions
Wednesday, October 21, 2015
12:30 pm - 1:30 pm
SMASTI, Room 204
706 S. Rodney French Blvd., New Bedford, MA
Abstract:
Salt marshes are globally distributed hotspots of biogeochemical cycling, and have large primary production and organic matter burial fluxes. Shallow (10s of cm deep) marshtop ponds cover large areas of salt marshes, and may change in extent and abundance with altered anthropogenic pressures. These environments are understudied compared to the grass covered marsh platform, and it is unclear how they contribute to marsh biological productivity or how a changing environment may alter primary production fluxes. Here, I present a time series of in-situ, natural abundance dissolved gas tracers in a salt marsh pond in Rowley, MA, over hourly to seasonal time scales. Community fluxes of gross primary production, net ecosystem metabolism, and respiration are evaluated. The novel triple oxygen isotope tracer is used to distinguish light an dark respiration; oxygen consumption in the light is shown to be much higher than in the dark in this system.
Note: Seminar will be simulcast to SMAST II, Room 325.
You can view the seminar live by logging into
https://echosystem.umassd.edu:8443/ess/portal/section/9f732442-8871-46c1-a9c1-d11db930bb39.
Please note: the earliest you will be able to log in is
15 minutes before the regularly scheduled time.
To view a video of an SMAST seminar (post-October 1st), go to
http://www.umassd.edu/smast/newsandevents/seminarseries/
and click on a highlighted title.
for additional information, please contact Sue Silva at s1silva@umassd.edu.
Contact: > See Description for contact information
Topical Areas: University Community