Abstract
Long-term monitoring for understanding status and trend of species of conservation concern is undeniably valuable, yet monitoring methods often evolve over time. From 1992 to 2017, two different monitoring methods were used to assess abundance and trends of seals in Glacier Bay National Park, Alaska: shore-based counts by observers (1992–2002) and aerial photographic surveys (2007–2017). In a recently published paper, we developed an analytical calibration between the two methods that improves continuity for long-term monitoring for a species of conservation concern by taking advantage of new sampling methods and innovations in analytical approaches. These photographs illustrate the article “Calibrating and Adjusting Counts of Harbor Seals in a Tidewater Glacier Fjord to Estimate Abundance and Trends 1992–2017” by Jamie N. Womble, Jay M. Ver Hoef, Scott M. Gende, Elizabeth A. Mathews published in Ecosphere. https://doi.org/10.1002/ecs2.3111
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