Workshop on Productivity, Diversity and Ecosystem FunctioningWorkshop on Productivity, Diversity and Ecosystem Functioning

Workshop on Productivity, Diversity and Ecosystem Functioning

In May 2009, twenty international scientist came together in the beautiful setting of the University of Washintons Field station in Friday Harbor (San Juan Island) to discuss the relationship between productivity, biodiversity and ecosystem functioning in the abyss.

To adress this matter, 31 data sets from the abyss were assembled before the workshop started. They include megafaunal, macrofaunal and meiofaunal data from the North Atlantic, South Atlantic, Southern Ocean, North Pacific, Indian Ocean, Gulf of Mexico and Mediterranean. In most data sets, fauna were identified to the species level, with counts provided for each sample. 

While the first day of the workshop was dedicated to presentations of the participants, the following two days were filled with discussions about the following topics:


- General productivity-diversity patterns in ecolog, drivers/mechanisms controlling these patterns and possible metrics for   

  assessing the strengths of these mechanisms

- The commonalities and limitations of the submitted data sets

- Key PDEF questions possible to address with analyses of the assembled data 

- Data organization and type of analyses needed to address these key questions


- Outline of additional synthetic papers, writing assignments

- Authorship

- Data policy

- Linkages to other projects like SYNDEEP, Comarge, FMAP

- Future tasks, marching orders and timelines.


Regarding the key questions, 3 main ones were identified as  


1)  What is the relationship between productivity (i.e., POC) and diversity in the abyss.


2)  What is the relationship between variability in productivity (i.e., POC) and diversity in the abyss.


3)  Are there environmental variables other than productivity that more strongly influence abyssal diversity and ecosystem function (e.g., sediment characteristics, oxygen, CaCO3 saturation, temperature, hydrostatic pressure, sediment Corg content, distance to nearest slope)? 


To approch these questions, it was agreed on comparing the species datasets with datasets on POC flux data (based on different models) that Derek has collected. For this analysis,d ifferent kinds of diversity measures and analysing models were discussed.


To see the summary of the workshop, the list of participants or the data agreement, download the files here: 

Participant List Workshop PDEF

Workshop Summary

Cedamar Data Sharing Agreement

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