PP14A:
Subsurface and Subseasonal Productivity: Mechanisms, Magnitudes, Variability, and Key Species III Posters
Submit an Abstract to this Session
PP14A:
Subsurface and Subseasonal Productivity: Mechanisms, Magnitudes, Variability, and Key Species III Posters
Subsurface and Subseasonal Productivity: Mechanisms, Magnitudes, Variability, and Key Species III Posters
Session ID#: 9342
Session Description:
Our understanding of oceanic primary production and producers has been dominated by sampling of the surface ocean (typically < 20m). Similarly, our knowledge of global patterns of primary production has been led by ocean colour measurements from satellite sensors that again, have surface bias. During the 20th Century there were few systematic attempts to target the subsurface resulting in a gap dating back to Schimper’s pioneering use of closing nets on the 1898 Valdivia cruise. Over the past two decades, however, a burgeoning suite of observations has highlighted the significance of subsurface production. A range of mechanisms have been identified including the ability to grow in low light in subsurface chlorophyll maxima, exploitation of mixing events at the pycnocline/ nutricline, buoyancy regulation allowing the mining of deep nutrients. Significantly, new research is also demonstrating that this subsurface production may be of major significance for carbon export. With climate change driving increased ocean stratification, these styles of subsurface production may become more significant so it is timely to focus on them. This session will aim to bring together observation, theory and modelling of the subsurface to synergistically improve understanding and to identify new targets and priorities for research.
Primary Chair: Alan E S Kemp, University of Southampton, Southampton, SO14, United Kingdom
Chairs: Bror Jönsson, PhD, Ocean Process Analysis Lab, University of New Hampshire, Durham, United States, Tracy A Villareal, The University of Texas at Austin, Port Aransas, TX, United States and Joseph Salisbury II, University of New Hampshire, Durham, United States
Moderators: Alan E S Kemp, University of Southampton, Southampton, SO14, United Kingdom and Bror Jönsson, PhD, Ocean Process Analysis Lab, University of New Hampshire, Durham, United States
Student Paper Review Liaison: Alan E S Kemp, University of Southampton, Southampton, SO14, United Kingdom
Index Terms:
4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4845 Nutrients and nutrient cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4855 Phytoplankton [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4858 Population dynamics and ecology [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Co-Sponsor(s):
- B - Biogeochemistry and Nutrients
- ME - Marine Ecosystems
- MM - Microbiology and Molecular Biology
- PC - Past, Present and Future Climate
Abstracts Submitted to this Session:
Seasonal Variability in Phytoplankton Responses to Water Accommodated Petroleum Hydrocarbons in the Northern Gulf of Mexico (93405)
Seasonal variation of the phytoplankton in the Southern Atlantic Ocean (18°20'-21°S - 41-37°W) (93458)
Mixed layer depth and chlorophyll a: profiling float observations in the Kuroshio-Oyashio Extension region (87794)
Elucidating the Relationship Between Phytoplankton and Primary Production in the Sargasso Sea Using New Observations of Nanoplankton and Picoplankton. (88418)
Photophysiology and Light Absorption Properties of the Phytoplankton Community in the Northern Gulf Of Mexico (89880)
Continuous Silicate Utilization Over Multiple 14L:10D Day:Night Cycles Confirms Night Metabolism in Lake Michigan Diatom Enrichments Using Either Nitrate or Ammonium as a Nitrogen Source (91467)
Picocyanobacteria Dominance in Deep Biomass Layers: Relation to Diatom Presence and Episodic Events. (93034)
Nutrient Interactions of Deep Phytoplankton Biomass Layers in Lake Michigan and Modeling of Layer Conditions (93668)
The Importance of Subsurface Production for Carbon Export – Evidence from Past Oceans (89491)
Seasonal effects on the population structure of Prochlorococcus in the North Pacific Ocean (93392)
Increase in Dominance of Eukaryote Over Prokaryote Phytoplankton Biomass Between the Surface and the Deep Chlorophyll Maximum in the Summertime Western North Atlantic Ocean (92904)
Seasonal Variation of Phytoplankton and Primary Production in the Thames River, Southeastern Connecticut (93494)
Small-Scale Spatial Dynamics of Phytoplankton in Apalachicola Bay, Florida, a River-Dominated Estuary (93412)
Global Marine Productivity and Living-Phytoplankton Carbon Biomass Estimated from a Physiological Growth Model (88676)
Predicting global oceanic net primary productivity with reduced-dimension, linear dynamical spatiotemporal models (89744)
See more of: Phytoplankton and Primary Production