Program Overview and Results of the 2014 Field Season
This was our 5th full year of the Olympic Marmot Monitoring Program, and the 3rd year adding lands on Olympic National Forest. With the addition of USFS lands the program now encompasses the entire range of the species –pretty sobering. In 2014 we had 70 volunteers in 28 groups participate in the program;a total of 3040 volunteer hours were donated.Volunteer training was held on four Wednesdays in the months of August and September.Following training, surveyors spent from 1-8 days in a variety of areas of the Park and Forest, ranging from the front-country on Hurricane Hill to deep in the parkon Skyline Ridge.Volunteer surveyors in all regions traversed high-elevation meadows and rock-fields looking for and documenting sign of marmots and marmot burrows. The late season snowpack was below average;consequently access was not limited by snowfields in 2014. Volunteers surveyed for marmots in 239 survey units located in 50 habitat clusters. Surveyors were able to completely survey 215 units and partially survey 24 others (Figure 2).
Of the units that were completely surveyed in the core clusters in the Park in 2014, 52% were found to be occupied by marmots, 18% were abandoned (surveyors saw past but not recent sign of marmot use) and 30% had no sign of marmots.The rate of occupancy has varied between 53 and 48 % during the 5 years of the survey, and appears to be stable (Figure 3).
USFS Sites: Unlike the survey units in the park, the USFS survey units were not ground-truthed prior to the 2012 survey season. Ground-truthing occurred throughout the 2012 and 2013 season. Of the 46 survey units identified on USFS lands, volunteers were able to completely survey 17, partially survey 8, and unable to survey 21. The reasons for the incomplete or lack of survey varied, ranging from unsuitable habitat, too steep, or not enough time to get to all the units in the allotted time frame. Of the 17 units that were completely surveyed, only 12% (2) were occupied by marmots in 2013. As these survey areas are continuing to be refined, these data should be viewed with caution.
Last updated: February 25, 2019