Figure 1. Sampling location and design.

(A) Location of sampling area within New York state and images of upstream and downstream sampling sites. The location of the effluent pipe of the fish rearing facility is circled in the upstream image. Photo credit: J. E. McKenna. (B) Schematic of relative positions of paired downstream and upstream autosamplers. For brevity, samplers are referred to by letter codes (A–D) in subsequent figures, and similar color schemes are also used throughout to link figure elements to the sampler from which they derive. Effluent denotes the outflow from the Tunison Aquatic Laboratory fish rearing facility. (C) Tempo of sampling by each autosampler. Each composite sample is initiated at a time in minutes since the start of the experiment, and consists of 12 45-mL volumes composited over 3 h. These are indicated by single points of the appropriate color. Triplicate grab samples (represented by three points) were taken consecutively at the intervals indicated. Composite samples initiated at approximately the same time as a set of triplicate grab samples, and paired with those for some analyses, are indicated by colored boxes.