Coastal volunteers plant native marram grasses to reinforce ocean barrier sand dunes
Along wind-swept Atlantic and Pacific coastlines, thousands of community volunteers, local surfers, and environmental students are spending weekend mornings on their knees in the sand, planting resilient green ramparts against the sea.
Coordinated by grassroots chapters of the Surfrider Foundation alongside municipal parks departments, coastal dune restoration projects focus on re-establishing native beachgrass species—such as American beachgrass (Ammophila breviligulata) and sea oats (Uniola paniculata). Coastal sand dunes serve as nature's first line of defense against ocean storms, absorbing destructive wave energy and buffering inland homes and infrastructure from flooding.
However, heavy pedestrian foot traffic and intense storm activity frequently break down fragile dune ridges. To heal them, volunteers hand-plant individual grass culms in staggered patterns across exposed sand slopes. The plants possess an extraordinary botanical adaptation: as blowing sand settles around their stems, the grass rapidly sends out new horizontal and vertical roots, knitting the loose grains into a durable, interconnected underground matrix that locks the entire dune in place.
Alongside planting, volunteer crews erect light wooden post-and-rope pathways that direct beachgoers away from fragile vegetation toward designated boardwalk crossovers. Coastal engineers reported that beaches with restored, vegetated dune systems suffered virtually zero structural erosion during recent seasonal storm surges, proving that living nature-based defenses offer superior long-term coastal resilience.
Source: Coastal Dune Restoration and Nature-Based Shoreline Protection (Surfrider Foundation).
Written by the HappyGood desk from the primary source linked above and checked against it. Every story links its source. Corrections: [email protected].
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