The wide-spread use of DDT decimated once robust populations of raptors nationally. The osprey, once common on Prudence Island and then absent for decades, is a very visual example of the recovery of many raptor species. Systematic monitoring for osprey nest sites and reproductive success (number of fledglings) provides a measure of population recovery.
Bi-weekly monitoring of ticks occurs from April through November. The relative abundance by growth stage (larvae, nymphs, adults) for each of three species of ticks (lone star, deer, wood [or dog]) is captured. This effort may contribute to a greater understanding of the relationship between deer density, tick abundance, and the incidence of tick-borne disease.
Long-term monitoring provides insight into the current (and potentially changing) status of resources, habitat, and species. Trends over time capture response to a change in condition (e.g. climate change, environmental policy) indicated by shifts in relative abundance or distribution on the landscape.