Fig. 1: Map of the study area with sampling sites for fish collection.

Sampling site on the Penobscot River, Maine. Inset 1—the United States of America. Inset 2—State of Maine showing the project area and Penobscot Watershed.
Sampling site on the Penobscot River, Maine. Inset 1—the United States of America. Inset 2—State of Maine showing the project area and Penobscot Watershed.