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Workshop 3

Sensitivity of marine food webs and biogeochemical cycles to enhanced stratification

Workshop 3 presentations

Day 1 - Monday Oct. 11, 2010

8:45-9:15 Opening Session / Welcome  Julie Hall
9:15-10:00

Plenary 1: Stoichiometry, trophic dynamics, and all that jazz

Kevin Flynn
10:00-10:45

Plenary 2: Food web sensitivity to enhanced stratification

Paul Wassmann
10:45-11:15 Coffee Break
11:15-12:45

Plenary 3: Controls on ecosystem structure: The need for an integrated fisheries to biogeochemistry approach
 Part I: Controls on ecosystem structure: the need for an integrated fisheries to biogeochemistry approach

 Part II: A biogeochemical perspective

Ken Frank
 Chris Sabine
12:45-13:45 Lunch
13:45-14:00 Introduction and plans for the Stratification Workshop Michio Kishi /
Michael Landry
14:00-14:30 Brief self introductions of workshop participants  
14:30-15:30 Session 1 "Physics of stratification" Kelvin Richards
14:30-14:50

Baroclinic instability: The physical transport route through stratification

John Allen
14:50-15:10

Multi-decadal shoaling of the euphotic zone in the southern sector of the California Current System

Ohman_IMBIZOII.pdf 255.16 kB
Mark Ohman
15:10-15:30 Discussion of issues in stratification physics  
15:30-16:00 Coffee Break
16:00-18:00  Session 2 "Stratification effects on key processes" Juan-Carlos Miquel
 16:00-16:20

Regulation of maximal water column photosynthesis by stratification

Zachary Johnson
16:20-16:40

Influence of stratification on DOM dynamics in the Mediterranean Sea

Chiara Santinelli
16:40-17:00

Vertical distribution of plankton in the mixed layer, turbulence and climate change

Diego Macias
17:00-17:20 Is the deep vertical export related to surface biotic and abiotic processes? Pieter Vandromme
17:20-18:00 Discussion of stratification issues affecting production and export  
18:00 Ice breaker

Day 2 - Tuesday Oct. 12, 2010

 
9:00-9:10 Information regarding Day 2 discussions M. Kishi / M. Landry
9:10-10:30  Session 3 "Stratification and food webs" Michael Roman
9:10-9:25

Change in lower trophic level seasonality and community structure in the warming ocean

Sanae Chiba
9:25-9:40

End to end comparison of cold and warm years in the subtropical waters of the Canary Current

Santiago Hernández-León
9:40-9:55 Comparison of structure and energy patterns in different representations of Southern Ocean ecosystems Tosca Ballerini
9:55-10:10

Exploring the paradigm of a global expansion in jellyfish blooms: Implications for biogeochemical cycles and food webs in a changing ocean

Rob Condon
10:10-10:30 Discussion of stratification effects on food webs  
10:30-11:00 Coffee Break
11:00-12:30 Session 4 - Breakout: small group discussion  
  Key food-web and biogeochemical cycling issues relating to changing ocean stratification  
12:30-13:30 Lunch
13:30-14:00 Short reports from breakout discussion groups – 3-5 minutes each  
14:00-15:00  Session 5 "Climate change impacts and ecosystem modelling" Stephanie Dutkiewicz
14:00-14:15

Global estimation of parameters for a lower trophic level ecosystem model by Green’s function approach

Shuhei Masuda
14:15-14:30

Modelling plankton dynamics on the Pacific coast of Canada: Potential impacts of changes in stratification on biogeochemical cycles

Angelica Pena
14:30-14:45

Decoupling of the temperature-nutrient relationship in the California Current ecosystem with global climate change

Ryan Rykaczewski
14:45-15:00 Discussion on climate change modelling  
15:00-15:30 Coffee Break
15:30-16:30 Session 6: "Paleo-climate reconstructions of community properties and biogeochemical cycles" Alexandra Gogou
15:30-15:50 Introduction: Reconstructions of paleo-physics and productivity trends in the Mediterranean Sea Alexandra Gogou
15:50-16:10

The response of diatom production and export to enhanced stratification – insights from the paleo-record and modern observations

Alan Kemp
16:10-16:30 Discussion of paleo-climate issues and opportunities  
16:30-19:00 Joint Poster Session

Day 3 - Wednesday Oct. 13, 2010

 
9:00-9:30  Session 7 "Stratification issues for presentation and discussion in cross-cutting sessions" Sanae Chiba
9:30-10:30 Breakout: Small group discussions
 - Global patterns relating to stratification: What are the quantifiable differences in community properties (biomass, composition, production, export, food web relationships) that can be readily ascribed to stratification?
 - Is there an optimal stratification?
 - Open questions and feedbacks that confound predictions of future change.
 
10:30-11:00 Coffee Break
11:00-12:30 Breakout sessions: discussion of issues that cross-cut all three workshops  
12:30-13:30 Lunch Buffet
13:30-15:00 Breakout sessions: discussion of issues that cross-cut all three workshops  
15:00-15:30 Coffee Break
15:30-16:00 Short reports from breakout discussion groups (3-5 minutes each)  
16:00-17:30 Session 8 "General Discussion: Patterns, questions, hypotheses" Kendra Daly
  - What can we predict from knowledge of present patterns and mechanisms about food web relationships and biogeochemical cycles under conditions of increased ocean warming and stratification?
- How can we test these hypotheses - observational baselines, paleo-opportunities, time-series trends, process studies, models?
 
19:30 Conference Dinner

Day 4 - Thursday Oct. 14, 2010

 
9:00-10:30 Session 9 - Discussion: Synthesis and the way forward  
  - Recommendations for implementing future studies relating to warming / stratification effects on marine food webs and biogeochemical cycles
 - Organizing workshop report and contributed papers
 
10:30-11:00 Coffee Break
11:00-12:30 Discussion: Writing and preparation for plenary presentations  
12:30-13:30 Lunch
  Workshop 1 Final Report Dan Repeta
  Workshop 2 Final Report Raleigh Hood
  Workshop 3 Final Report Mickael Landry
  Best young scientist Award - Closing IMBIZO Julie Hall