July 21, 2014
GECSC Geologist Ren Thompson and Tien Grauch of the USGS Crustal Geophysics and Geochemistry Science Center served as instructors and regional experts for a NASA astronaut training exercise in the application of geophysics and geologic mapping to field investigation of the volcano-tectonic evolution of the northern Rio Grande rift. Eight students of the current NASA astronaut candidate class were immersed in field studies from July 14-18 in the Rio Grande del Norte National Monument of northern New Mexico. This exercise was coordinated by NASA, in cooperation with the USGS, the New Mexico Bureau of Geology and Mineral Resources, the Bureau of Land Management, and a number of academic research institutions.
July 15, 2014
Harvest estimates and economic valuation of native consumption of Northern Pintails (Anas acuta) in Arctic and sub-Arctic North America
By Joshua Goldstein, Wayne Thogmartin, Ken Bagstad (GECSC), James Dubovsky, Brady Mattsson, Darius Semmens (GECSC), Laura López-Hoffman, and Jay Diffendorfer (GECSC). Published in Human Dimensions of Wildlife.
In this case study, regional and sub-regional economic values of subsistence pintail harvests by indigenous communities in Arctic U.S. and Canada were quantified using the replacement cost method, which compares the cost of the most similar store-bought replacement for hunted duck meat. For an estimated annual subsistence harvest of ~15,000 pintail, a mean estimate for the total replacement cost was ~$63,000/year (in 2010 USD), with sub-regional values ranging from $263/year to $21,930/year. These results provide an order-of-magnitude, conservative estimate of one component of the regional ecosystem-service values of pintails while presenting spatially explicit values that can inform migratory species conservation.
July 7, 2014
From theoretical to actual ecosystem services: Accounting for beneficiaries and spatial flows in ecosystem service assessments
By Ken Bagstad (GECSC), Ferdinando Villa, David Batker, Jennifer Harrison-Cox, Brian Voigt, and Gary Johnson. Published in Ecology and Society.
New ecosystem services modeling approaches that map and quantify service-specific sources, sinks, users, and spatial flows can provide a more complete understanding of ecosystem services than the approaches that solely map ecosystems' capacity to provide a service (i.e., sources). This article presents results of a case study conducted in the Puget Sound in Washington that aimed to quantify and differentiate between the theoretical provision of services and their actual provision using this newer method. The service supply, demand, and flow of five ecosystem services were mapped using the ARIES methodology, with the outcome showing the importance of mapping flow paths between people and ecosystems when mapping ecosystem services.