on surveyed areas and willow identification
-- Tidmarsh Farms, Plymouth, Sep--Nov 2011
During the survey of Tidmarsh Farms in the fall of 2011 we found a few solitary native willows
Salix cinerea / S. atrocinerea (= S. cinerea ssp.oleifolia).
Dots correspond to photographed mature plants, roughly depicting the area of infestation within the Farms.
The two areas examined more closely are shown pink on the map:
a small portion of an abandoned cranberry plantation in the northern part of the Farms
now covered with old willows
and a large recently drained pond with old willows on perimeter and abundant seedlings on the bottom
(presented in a separate report).
The exact identification of each willow proved to be somewhat difficult.
Only some mature willows could be decisively identified as S. atrocinerea or S. cinerea.
The majority of seedlings and saplings looked like S. atrocinerea, but
most of old willows fitted more to S. cinerea
by their leaf color, lack of reddish hairs, hairy branchlets and buds.
At the same time, many old willows had slender branchlets typical for S. atrocinerea.
and abundant European
Geotagging implemented by synchronizing camera
with standalone Garmin GPS,
coordinates kept in separate files,
exif headers left unmodified.
Maps created using online service by GPS Visualizer