| Description | Indicates |
---|---|---|
Global metrics (individual fish) | Â | |
Node density | Proportion of nodes used out of all possible nodes | Proportion of the network used by an individual |
Edge density | Proportion of edges used out of all possible edges | Mobility of an individual |
Network diameter | Longest of shortest paths along observed edges between all pairs of observed nodes | Spatial extent of the network used by an individual |
Clustering coefficient | Probability that two neighbours of a given node are themselves connected by an edge | Circulation within a region (high clustering coefficient) or directed movements (low clustering coefficient) |
Total distance | Minimum total distance, from Coppermine River, along observed edges, back to Coppermine River | Minimum observed mobility of an individual |
Furthest distance | Furthest distance from the Coppermine River to a receiver where an individual was detected | Minimum furthest distance traveled by an individual |
Days undetected | Proportion of days during the ice-free season (until freshwater return) that an individual was not detected | Absence from array or movement outside detection range of receivers |
Freshwater return | Decimal day of year when an individual returned to freshwater (the Coppermine River) to overwinter | Time that marine foraging ceased |
Local metrics (receiver locations) | Â | |
Node strength | Number of movements to and from a given node, including self-edges | Locations with high activity (number of movements) |
Restricted betweenness | Number of movements that pass through a given node | Movement corridors |
Local Getis G* | Duration of residence events within 6000 m1of a given receiver, relative to time spent at all locations | Regions with high activity (duration of residence events) |