Swimming through the carbonscape: A zooplankton-centric view of Puget Sound pH
Presentation Abstract
Understand the carbon chemistry environment experienced by zooplankton in Puget Sound is essential to predicting how ocean acidification will affect these species. Puget sound has a spatially variable and temporally dynamic carbon chemistry environment as a consequence of interacting physical and biological processes. Zooplankton have complex movement patterns as a consequence of passive drifting, active swimming toward or way from stimuli, daily vertical migrations (DVM), and density dependent interactions. We used an individual-based approach to simulate movement of several zooplankton species in a 3-d model of carbon chemistry dynamics in Puget Sound. The unstructured-grid model includes hydrodynamics and water quality variables such as nutrients and oxygen at spatial scales as small as ten meters (horizontal) and temporal scales as small as minutes. We added carbon chemistry to the model using empirically derived local relationships with oxygen, temperature and salinity. Zooplankton movement was modeled for species that exhibit a variety of behaviors exhibited by Puget Sound species. Model output consists of time series of carbon parameter exposure (e.g. pH) that can be used to create realistic conditions for laboratory experiments and to assess vulnerability of zooplankton species to current and future acidification. Vulnerability is a function of exposure (addressed in this study) and sensitivity (addressed in lab experiments). The exposure time series approach moves beyond simple assessment of average conditions to consider species where peak exposures or rates of change in carbon parameters may drive sensitivity.
Session Title
Session S-05A: Frontiers of Ocean Acidification Research in the Salish Sea
Conference Track
Ocean Acidification
Conference Name
Salish Sea Ecosystem Conference (2014 : Seattle, Wash.)
Document Type
Event
Start Date
1-5-2014 10:30 AM
End Date
1-5-2014 12:00 PM
Location
Room 615-616-617
Genre/Form
conference proceedings; presentations (communicative events)
Contributing Repository
Digital content made available by University Archives, Heritage Resources, Western Libraries, Western Washington University.
Subjects – Topical (LCSH)
Zooplankton--Effect of water acidification on--Washington (State)--Puget Sound; Zooplankton--Effect of temperature on--Washington (State)--Puget Sound; Carbon cycle (Biogeochemsitry)--Washington (State)--Puget Sound; Ocean acidifcation--Washington (State)--Puget Sound
Geographic Coverage
Salish Sea (B.C. and Wash.); Puget Sound (Wash.)
Rights
This resource is displayed for educational purposes only and may be subject to U.S. and international copyright laws. For more information about rights or obtaining copies of this resource, please contact University Archives, Heritage Resources, Western Libraries, Western Washington University, Bellingham, WA 98225-9103, USA (360-650-7534; heritage.resources@wwu.edu) and refer to the collection name and identifier. Any materials cited must be attributed to the Salish Sea Ecosystem Conference Records, University Archives, Heritage Resources, Western Libraries, Western Washington University.
Type
Text
Language
English
Format
application/pdf
Swimming through the carbonscape: A zooplankton-centric view of Puget Sound pH
Room 615-616-617
Understand the carbon chemistry environment experienced by zooplankton in Puget Sound is essential to predicting how ocean acidification will affect these species. Puget sound has a spatially variable and temporally dynamic carbon chemistry environment as a consequence of interacting physical and biological processes. Zooplankton have complex movement patterns as a consequence of passive drifting, active swimming toward or way from stimuli, daily vertical migrations (DVM), and density dependent interactions. We used an individual-based approach to simulate movement of several zooplankton species in a 3-d model of carbon chemistry dynamics in Puget Sound. The unstructured-grid model includes hydrodynamics and water quality variables such as nutrients and oxygen at spatial scales as small as ten meters (horizontal) and temporal scales as small as minutes. We added carbon chemistry to the model using empirically derived local relationships with oxygen, temperature and salinity. Zooplankton movement was modeled for species that exhibit a variety of behaviors exhibited by Puget Sound species. Model output consists of time series of carbon parameter exposure (e.g. pH) that can be used to create realistic conditions for laboratory experiments and to assess vulnerability of zooplankton species to current and future acidification. Vulnerability is a function of exposure (addressed in this study) and sensitivity (addressed in lab experiments). The exposure time series approach moves beyond simple assessment of average conditions to consider species where peak exposures or rates of change in carbon parameters may drive sensitivity.
