Sentences with phrase «wood frog populations»

Introduction of ranavirus to isolated wood frog populations could cause local extinction.

In many of the wood frog populations studied, researchers found evidence of interacting temperature and precipitation influencing population size, such as warmer summers having less of a negative effect in areas that received more precipitation.

Similarly, they found higher than average rainfall in areas that typically experience lower annual rainfall saw positive effects on wood frog population growth.

Not exact matches

Since late February, researchers from the Peggy Notebaert Nature Museum and Lincoln Park Zoo have been monitoring levels of cortisol (known as the stress hormone) in three species that have been reintroduced or restored by the forest preserve: wood frogs (designated as «in great need of conservation» in Illinois); spotted salamanders, a rare species for northeastern Illinois; and spring peepers, a frog species whose local populations are in decline.

«But having said that, it appears that populations in the southern portion of the wood frog's range are vulnerable if we have more hot, dry summers.