In the fall of 2017, the last generation of eastern monarch butterflies (Danaus plexippus) is migrating southwest to the mountains of central Mexico. Some of the butterflies are stopping to sip nectar from the masses of smooth beggartick blossoms blooming in Dyke Marsh.
On September 23, 2017, FODMers joined Northern Virginia Conservation Trust (NVCT) and Porto Vecchio volunteers on a kayak and canoe trash cleanup of NVCT’s newest property, a two-acre wetland at the confluence of Cameron Run and Hunting Creek on Alexandria’s southern border, just north of Dyke Marsh. The tidal wetlands, under the Beltway/I-95 ramps and elevated highways, are favorite sites for roosting gulls, migrating shorebirds and other birds, especially at low tide, an eBird “hotspot.”
FODMers and friends learned about the importance, abundance and distribution of submerged aquatic vegetation (SAV) in the Potomac River on September 13, 2017, when Dr. Nancy Rybicki, U.S. Geological Survey aquatic plant biologist and hydrologist, spoke to 55 attendees.
On a walk that FODM announced as a “plant walk,” 25 Dyke Marsh enthusiasts enjoyed the flora, fauna and more on a balmy September 9, 2017, in Dyke Marsh. Retired George Washington University botany professor Elizabeth Wells led the group along the Haul Road trail out to the boardwalk for almost three hours. Ms. Wells depth of knowledge and the rich biodiversity of the marsh easily held everyone’s attention.
Many visitors to Dyke Marsh who walk along the Haul Road trail have questions about the cleared area on the west side of the trail across from “Dead Beaver Beach.”The answer: The National Park Service and FODM are creating a demonstration plat, clearing the area of a massive invasive plant infestation and eventually planting some native plants.
The bright, scarlet cardinal flowers (Lobelia cardinalis) blooming in Dyke Marsh in August and September 2017 are delighting many visitors, including migrating hummingbirds. “The tube-shaped flowers have two lips, the upper having two lobes and the lower lip so fragile, many insects cannot land on the plant to reach the nectar,” according to the guidebook, Walking the Wetlands.
