Fig. 4
From: Real-time nodes permit adaptive management of endangered species of fishes
Home page of Biotelemetry Autonomous and Real-Time Database (BARD) website that displays the detections of fish carrying acoustical tags from both autonomous and real-time nodes in the Sacramento–San Joaquin watershed. The circular symbols indicate autonomous nodes; triangles designate the real-time nodes. The frequencies of receivers are indicated by orange for a node with only a 69-kHz-sensitive receiver, denoting the addition of a 180-kHz-sensitive receiver, a green color informing of the presence of a JSATS receiver