Sentence examples for frog populations are from inspiring English sources

But even in some pristine areas of the world, safe from humans and local pollution, frog populations are also in decline, maybe indicating larger causes at work.

"I think it is risky to say that many species are rebounding, I would say that there is a chance the fungus is changing and eventually some frog populations are also changing and somehow adapting or tolerating the infection".

B. dendrobatidis is common in African frogs from Ghana, Kenya, South Africa, and Western Africa (12, 15 ) and declines in frog populations are poorly documented in Africa (7, 16 ).

Frog populations are dwindling because their breeding areas are disappearing.

This could be because the main protective measure in aposematic frog populations is their ability to warn predators of their toxicity.

Common frog populations were chosen based on their disease history.

Animals from all 15 wood frog populations were collected as early-stage embryos (Gosner 1960) within a 7-days period (Table S1).

In fact, the decline of the frog population is a complicated phenomenon (much of the evidence is anecdotal) for which few mainstream scientists link directly to atrazine usage.

Then the next generation of frog population is dynamically adjusted according to dynamic population strategy [ 29].

Since at least the 1970s, frog populations have been in decline.

"If frogs exposed and cured are therefore 'vaccinated' against Bd, then this study has big implications for mitigation of Bd outbreaks in the future and restoration of frog populations that are in captive holding now," writes biologist Kelly Zamudio of Cornell University, who was not involved in the study, in an e-mail.