APRIL 2014

The Connecticut salt marsh had been filled in during the 1940s, restored during the 1980s, overrun with too many tourists enjoying its beauty in the 1990s, and finally declared an ecologically protected area in 2004. Although it proved impossible to completely eliminate the invasive nonnative plant species, the natural floral layering of back-barrier marsh was returning. At the lowest level, where the tide brought surges of salt water twice a day, cordgrass and glassworts dominated. Higher up, it was salt hay. Higher still, on the upland border of the marsh, the ground was thick with black rush and marsh elder.

A particularly large marsh elder, nearly eight feet high, held a half-finished nest. A red-winged blackbird brought another piece of grass, laid it in the nest, and flew off. The shrub’s still furled buds, which would soon become greenish-white flowers, bobbed in a wind from the sea.

Below ground, bacteria mutated again. This time it found the lower salinity much more congenial than it had the roots of cordgrass, a month ago. The bacterial slime engaged in all its metabolic processes, including mitosis and fermentation. Alcohol began to accumulate on the marsh elder’s roots.

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