What alarming population decline estimate has been noted over the last decade for this species?
Answer
Plummeted by an alarming 50% or more.
Estimates suggest that the population of the Titicaca Water Frog has plummeted by an alarming 50% or more over the last decade alone.

Related Questions
What feature gives the Titicaca Water Frog its common name?How does the Titicaca Water Frog primarily sustain itself physiologically?At what approximate elevation above sea level is Lake Titicaca situated?According to official definitions, what is the IUCN conservation status of *Telmatobius culeus*?What alarming population decline estimate has been noted over the last decade for this species?What is the most pervasive threat contributing to the rapid decline of the species?Why does the frog's reliance on cutaneous respiration make it acutely sensitive to water pollution?For what purposes is the frog often harvested for local traditional remedies?What type of conservation strategy involves maintaining colonies outside of Lake Titicaca, such as at Chester Zoo?What must be aligned with the survival of the frog for long-term in-situ success?