Publications by authors named "Carlos C Martinez Rivera"
Article Synopsis
- - Systematic assessments of species extinction risk are crucial for effective conservation, and the second Global Amphibian Assessment evaluated over 8,000 species for their threat levels.
- - Amphibians are the most at-risk vertebrates, with 40.7% of species globally threatened, and their status has worsened since previous assessments, especially in salamanders and the Neotropics.
- - The major threats contributing to declining amphibian populations include disease, habitat loss, and increasing impacts from climate change, highlighting the urgent need for more conservation funding and initiatives to reverse negative trends.
Senders and receivers influence dynamic characteristics of the signals used for mate attraction over different time scales. On a moment-to-moment basis, interactions among senders competing for a mate influence dynamic characteristics, whereas the preferences of receivers of the opposite gender exert an influence over evolutionary time. We observed and recorded the calling patterns of the bird-voiced treefrog Hyla avivoca, to assess how the dynamic characters of calls vary during interactions among groups of males in a chorus.
View Article and Find Full Text PDFFrogs have two inner ear organs, each tuned to a different range of frequencies. Female treefrogs (Hylidae) of three species in which males produce calls with a bimodal spectrum (Hyla chrysoscelis, H. versicolor, H.
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