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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

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

Kevin Flynn

Plenary 2: Food web sensitivity to enhanced stratification

Paul Wassmann
10:45-11:15 Coffee Break

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

Baroclinic instability: The physical transport route through stratification

John Allen

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

Regulation of maximal water column photosynthesis by stratification

Zachary Johnson

Influence of stratification on DOM dynamics in the Mediterranean Sea

Chiara Santinelli

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

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

Sanae Chiba

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

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

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

Shuhei Masuda

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

Angelica Pena

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

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