Philadelphia’s Diatom Archive Is a Way, Way, Wayback Machine

However, in recent decades, the sea has dominated the once-dynamic coastal margin, propelling farther inland as sea levels rise. Over the last century, the sea level along New Jersey has risen by 0.45 meters, more than double the global average of 0.18 meters. By 2100, the sea could rise by over a meter.

This dramatic rise in sea level has proven disastrous for the patchwork of marshes along New Jersey’s coastline, several of which have already succumbed to the sea. However, the full extent of the loss of these wetlands is difficult to parse because environmental monitoring only dates back a few decades.

Without a sense of a wetland’s natural conditions,

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