Authors: Sean Fitzpatrick*, Western Washington University, Addie Beal*, Western Washington University, Elias Gurel*, Western Washington University
Topics: Biogeography, Land Use and Land Cover Change, Paleoenvironmental Change
Keywords: Shore Pine, biogeography, Oregon, dunes, off-road vehicles, ATV
Session Type: Poster
Presentation File: No File Uploaded
Our project applies dendrochronological techniques to study the biogeography of the Oregon Dunes Recreation Area. Specifically, we analyzed the establishment of Shore Pine (Pinus contorta) in six vegetated depressions, and two elevated vegetation islands, in an area where motorized off-highway vehicles were banned in the late 1970s. These six depressions are interspersed between the two relict elevated vegetation islands which contain flora analogs to the continuous forest that once covered all of the study area. Shore Pine ages on the elevated vegetation islands are consistent with those of the continuous forest further inland, while more recent Shore Pine establishment in the depressions corresponds with the off-highway vehicle ban.