Dramatic declines in amphibian populations, including population crashes and mass localized extinction, have been noted since the late 1980s from locations all over the world, and amphibian declines are thus perceived to be one of the most critical threats to global biodiversity.
dɹəmˈæɾɪk dᵻklˈaɪnz ɪn æmfˈɪbiən pˌɑːpjʊlˈeɪʃənz, ɪŋklˈuːdɪŋ pˌɑːpjʊlˈeɪʃən kɹˈæʃᵻz ænd mˈæs lˈoʊkəlˌaɪzd ɛkstˈɪŋkʃən, hɐvbɪn nˈoʊɾᵻd sˈɪns ðə lˈeɪt nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi z fɹʌm loʊkˈeɪʃənz ˈɔːl ˌoʊvɚ ðə wˈɜːld, ænd æmfˈɪbiən dᵻklˈaɪnz ɑːɹ ðˈʌs pɚsˈiːvd təbi wˈʌn ʌvðə mˈoʊst kɹˈɪɾɪkəl θɹˈɛts tə ɡlˈoʊbəl bˌaɪoʊdaɪvˈɜːsᵻɾi.