radio-telemetry (Sciuridae)

Knowledge graph centered on radio-telemetry (Sciuridae) with 71 nodes and 167 connections. Top connected: Marmota flaviventris, Spruce, mark-recapture (Sciuridae), Populus, Populus tremuloides.

Method synopsis

Intensive monitoring of juvenile emergence and movements using daily visual observations and grid-based distance calculations to characterize dispersal timing, distance, and settlement patterns.

Synthesized from method descriptions across 8 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 — Dispersal of the golden-mantled ground squirrel (Callospermophilus lateralis) (2025), Journal of Mammalogy. The protocol was originally introduced by Investigating patterns of juvenile dispersal in golden mantled ground squirrels, <i>Callospermophilus lateralis</i> (2011). Implementations in other papers (listed below) may differ.

1. Juvenile monitoring and dispersal tracking
   Monitored reproductive females closely by searching home ranges several times per day for newly emerged juveniles. Recorded emergence date as day first juvenile was observed aboveground. Continued observation of newly emerged litter until all unmarked juveniles were trapped. Tracked individual juveniles to determine dispersal status and distance using last known location before disappearance.
   Quantities: Multiple daily searches of female home ranges, tracked all juveniles until trapped and marked or determined to have dispersedDuration: Intensive monitoring from emergence through end of active season for each litterConditions: Peak emergence period around 8 July (median), continued through active season
   Equipment: binoculars, trapping equipment for juvenile capture
2. Distance and dispersal calculations
   Calculated dispersal distances as Euclidean distance between center of natal burrow grid square and settlement location. Determined mean distance during intervals by choosing distance observation closest to midpoint of each interval. Classified individuals as philopatric if they remained in natal locality or as dispersed if they settled in different locality within study area.
   Quantities: Distance measurements in meters using Euclidean calculations, 5-day intervals for analysisDuration: Calculated retrospectively for all individuals with complete tracking data

Typical Equipment

• binoculars
• 7m × 7m grid map system

Output Measurements

• dispersal distances
• emergence dates
• settlement locations
• dispersal status

Papers Using This Protocol (8)

Species Studied With This Protocol