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Explore the limits of pollen preservation
Use the interactive map to explore validated sites where pollen analysis produced non-productive or non-interpretable results. Records can be filtered by country, sample type, and sampling method. Click on any site to access the full record, including contextual information such as depositional setting, chronology notes, sample observations, related publications, and images where available.
This resource is continually updated as new contributions are submitted and validated.
Important note on interpretation
A mapped record should not be interpreted as direct evidence of absent past vegetation. Instead, it documents that, under the recorded environmental, taphonomic, sampling, and analytical conditions, the pollen proxy did not yield a reliable interpretive signal. To properly understand the conditions of analytical failure without overinterpreting the absence of pollen, each record must be read within its environmental and methodological context
NOTE: Small screens (e.g., mobile phones) may cause overlapping elements or pop-up windows. For best results, please view this interactive map on a tablet or desktop computer.