GIS-based riparian proximity measurement (Picidae)

Knowledge graph centered on GIS-based riparian proximity measurement (Picidae) with 68 nodes and 162 connections. Top connected: Hummingbird, Populus, elevational gradients, Populus tremuloides, small mammals.

Method synopsis

Measurement of distances from bird survey points to nearest riparian features using aerial photography, field measurements, and GIS analysis to quantify habitat proximity effects.

Synthesized from method descriptions across 3 papers using this protocol.

Procedure from a recent peer-reviewed implementation

Steps below were extracted from the most recent peer-reviewed implementation of this protocol in the corpus — Effects of proximity to riparian zones on avian species richness and abundance in montane aspen woodlands. (2015), Journal of Field Ornithology. Implementations in other papers (listed below) may differ.

1. Measure distances to riparian features
   Measured minimum distances from point count centers to edges of nearest willow patches (major >6500 m², minor <6500 m²), water bodies (major and minor), and meadows using aerial photos, tape measures, and laser range finders. Distances to willows ≥200 m away and water bodies were estimated from aerial photos at 15 cm/pixel resolution.
   Quantities: Distances measured to nearest features in each category, major willow patches ≥6500 m², minor willow patches <6500 m²Duration: Measurements taken during field season concurrent with bird surveysConditions: Measurements taken in field and from aerial photography
   Equipment: aerial photos (15 cm/pixel resolution), tape measure, laser range finder, ArcGIS

Typical Equipment

• aerial photos (15 cm/pixel resolution)
• tape measure
• laser range finder
• ArcGIS

Output Measurements

• distance to willow patches
• distance to water bodies
• distance to meadows

Papers Using This Protocol (3)

Species Studied With This Protocol