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Amphibians are sensitive indicators of environmental conditions and show measurable responses, such …


Biology Articles » Paleobiology » Paleoecology » Temporal response of the tiger salamander (Ambystoma tigrinum) to 3,000 years of climatic variation » Figures

Figures
- Temporal response of the tiger salamander (Ambystoma tigrinum) to 3,000 years of climatic variation

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Figure 1. Four age classes of cervical Ambystoma tigrinum vertebrae. Scale is in millimeters. Left to right: Young Larval show an open (unfused) neural arch and open centrum with little or no ossification; Young Terrestrial are characterized by an open neural arch and constricted, or partially fused, centrum with little ossification; the Paedomorphs are typified by a fused neural arch and an open centrum with some ossification present; the Old Terrestrial are described by a fused neural arch and a closed, or fused, centrum with visible ossification.

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Figure 2. Ambystoma tigrinum Body Size Index (BSI) for paedomorphic (dark bars) and terrestrial adults (light bars) in time intervals. Error bars represent one standard deviation around mean. Bracket indicates significance when intervals D and E are pooled together. (* is p

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Figure 3. Percent paedomorphosis in time intervals. Percent paedomorphosis is expressed as paedomorphic minimum number of individuals (MNI) divided by adult MNI. Error bars represent one standard deviation around mean.

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