Monster Seminar JAM - Pattern Detection, Scope, and Perception in Riverine Landscapes
Dr. Christian Torgersen
USGS Forest & Rangeland Ecosystem Sci Center, Cascadia Field Station, &
College of Forest Resources, Univ of Washington
Better pattern detection in riverine ecology requires not just a transfer of technology or an incorporation of spatial data into statistical analyses but also a change in perception that will lead to new ways of visualizing riverine ecosystems. Despite the advances that have resulted from recent increased interest in heterogeneity and scale, stream ecologists still attempt to detect patterns by inferring associations and relationships from a selection of representative sites. In this presentation, I propose that in order to detect scale- and context-dependent patterns, we have to start looking for patterns in science the way we look for patterns with our eyes. I will describe new approaches for detecting spatial patterns in river systems through synoptic field sampling, extensive surveys, remote sensing, and geostatistical analysis, and I will illustrate how increasing the scope (i.e., the ratio of sampling extent to grain size) of data collection can lead to greater power and flexibility to evaluate ecological patterns and processes at multiple scales.
Date and Time:
October 6, 2005,
11:00 am - 12:30 pm