AI Article Synopsis
- - Understanding biodiversity changes over geological time requires addressing biases in how fossils are sampled due to rock exposure and age variability.
- - Data from New Zealand suggests that the area where rocks are visible (outcrop area) is a good indicator of the amount of rock available for study, especially in stable geological areas.
- - Conversely, just counting the number of rock formations does not effectively predict how much rock is actually exposed for sampling in New Zealand.
Article Abstract
To interpret changes in biodiversity through geological time, it is necessary first to correct for biases in sampling effort related to variations in the exposure of rocks and recovery of fossils with age. Data from New Zealand indicate that outcrop area is likely to be a reliable proxy of rock volume in both stable cratonic regions, where the paleobiodiversity record is strongly correlated with relative sea level, and on tectonically active margins. In contrast, another potential proxy, the number of rock formations, is a poor predictor of outcrop area or sampling effort in the New Zealand case.
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| http://dx.doi.org/10.1126/science.1085075 | DOI Listing |
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