How Climate Change Threatens the Eastern Shore Way of Life
A recent article in the Atlantic Monthly reports in detail about a growing threat to Eastern Shore agriculture. It comes from rising levels of salinity in soils, as saltwater intrudes into aquifers or moves inland through drainage ditches or is deposited by storm surges—especially in low-lying fields or those near the Chesapeake Bay. While some weeds can cope with salty soils, corn typically won’t grow in soil where salt is present at more than 0.8 parts per thousand. At still higher levels, salt will kill everything, even trees.
The full extent of rising salinity is not known, although a new effort is underway to test soils and map affected areas. But it’s clear that Somerset County is already seeing a significant impact (over 4000 acres retired from farming in recent decades because of salinity ), and there is a lot of low-lying, near-shore land in parts of Dorchester, Talbot, Queen Anne’s, and Kent counties as well.
A primary cause of increased salinity is sea-level rise, which in the Chesapeake Bay is twice as high as the global average. That is partly because of atmospheric warming, melting polar ice, and expanding waters—in a word, climate change. But the Eastern Shore is also subsiding, in part because of withdrawal of water from aquifers for household use and for crop irrigation.
Waters warmed by a changing climate can also affect fisheries, causing species to migrate north or fail to thrive. Warmer waters can also promote toxic algal blooms. In addition, the marinas that service the fishing fleets as well as recreational boats are increasingly at risk from higher storm surges and more intense storms. And it’s not just boats that are at risk. As reported here in an earlier issue, more than 21,000 people on Maryland’s Eastern Shore live in homes less than 6 feet above high tide; a direct hit from hurricanes of the intensity of last year’s Harvey and Irma could easily exceed that.
The bottom line is that climate change is a real and growing threat to livelihoods and the way of life on the Eastern Shore. So it would make sense if the United States supported growing global efforts to prevent or combat climate change—and if our elected representatives were advocates for such policies.
Common Sense for the Eastern Shore




