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Riparian willow structural complexity assessment (Parulidae)
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Description
Combined vertical (Robel pole) and horizontal (line intercept) measurements to quantify willow habitat structural complexity including height diversity, average height, patchiness, frequency and cover.
Typical Equipment
- modified Robel pole
- 3x200-cm PVC pipe marked at 0.5 m intervals
- meter tape
- GIS software
- aerial photographs
Output Measurements
- foliage height diversity
- average height
- coefficient of variation in height
- willow frequency
- patchiness
- horizontal cover
- willow cover