Colorado mountains
From Long-Term Data to Understanding: Toward a Predictive Ecology
2015 LTER ASM Estes Park, CO - August 30 - September 2, 2015

Exploring the structure of variability in NPP measurements

Printer-friendly versionPrinter-friendly versionOne of the break-out groups at the 2014 Science Council Meeting at Konza Prairie focused on how changes in the variability of NPP could provide insights beyond the magnitude and trend of annual means. The group identified three areas where insights could potentially be gained from analyses of long-term observations of NPP: 1) Analyze the spatial variability of NPP through time. Spatial variance of plot-scale measures could be useful for determining the scale of driver interactions. 2) Evaluate whether there are synchronous changes in the spatial variability of NPP through time. Synchronicity would suggest that there is a common driver of variability regardless of the direction of changes in means. 3) Analyze the temporal variability of NPP through time. Rates of change through time of either annual means or variability would provide an estimate of sensitivity to drivers. The proposed working group at the ASM will provide an opportunity to follow up on these ideas with the goal of producing a cross-site synthesis of NPP variation at LTER sites and a potential publication.

Merryl Alber
Katharine Suding
Michael Gooseff
Jim Morris
Number of 2 hour sessions requested: 
Equipment requested: 
Projector and screen.
Additional Comments: 
We welcome participation from all LTER sites. We will contact representatives from each site before the meeting and ask that they come prepared with plot-scale annual measurements of NPP, grouped by habitat/land cover; a short summary of how they measure NPP; and characteristics of the dominant producer and whether it has changed through time.
Room Assignment: 
Ruesch Auditorium – Bilheimer (Capacity 50)