Interdunal Marsh/Swale

Photos: salicicola.com

 

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Overview


Graminoid- or shrub-dominated coastal community occurring in shallow basins (swales) between sand dunes.

Interdunal Marsh/Swales (Interdunal Swales) form in barrier beach systems in low, shallow depressions between sand dunes. The best examples are complexes of multiple swales with varied conditions. Soils generally have a thin (1 cm) organic layer over coarse sand. The substrate may be seasonally flooded or permanently inundated, with water coming from groundwater and precipitation, with occasional brackish overwash from storms. The water regime controls the vegetation. The community is usually graminoid- or shrub-dominated, one variant has a pitch pine canopy.

Photos credit to salicicola.com (unless otherwise noted). Natural communities information extracted from the Massachusetts Division of Fisheries and Wildlife Natural Heritage and Endangered Species Program (NHESP). NHESP's Maritime Forest/Woodland natural community page.


SEMPBA Archives: Interdunal Marsh/Swale

large cranberry (Vaccinium macrocarpon)
sphagnum moss
pondshore rush (Juncus pelocarpus)
Canadian rush (Juncus canadensis)
spatulate-leaved sundews (Drosera intermedia)
thread-leaved sundews (Drosera filiformis)
brown beak-rush (Rhynchospora capitellata)
white beak-rush (Rhynchospora alba)
bog yellow-eyed grass (Xyris difformis)
twisted yellow-eyed grass (Xyris torta)
marsh St. John's-wort (Triadenum virginicum)
southern bog clubmoss (Lycopodiella appressa)
rose pogonia (Pogonia ophioglossoides)
grass-pink (Spiranthes cernua)
nodding ladies-tresses (Spiranthes cernua)
arethusa (Arethusa bulbosa)
ragged fringed orchis (Platanthera lacera)
Plymouth gentian (Sabatia kennedyana)
pitch pine (Pinus rigida)
eastern red cedar (Juniperus virginiana)
bayberry (Morella pensylvanica)
sheep laurel (Kalmia angustifolia)

large cranberry (Vaccinium macrocarpon)
large cranberry (Vaccinium macrocarpon)
large cranberry (Vaccinium macrocarpon)
large cranberry (Vaccinium macrocarpon)
sphagnum moss--Any species of moss within the genus Sphagnum. An example of sphagnum moss is in the background of this photograph, large cranberry (Vaccinium macrocarpon) is in the foreground.
sphagnum moss--An example of sphagnum moss is in the background of this photograph, pod grass (Scheuchzeria palustris) is in the foreground.
sphagnum moss--An example of sphagnum moss is in the background of this photograph, pod grass (Scheuchzeria palustris) is in the foreground.
pondshore rush (Juncus pelocarpus)
pondshore rush (Juncus pelocarpus)
pondshore rush (Juncus pelocarpus)
pondshore rush (Juncus pelocarpus)
Canadian rush (Juncus canadensis)
Canadian rush (Juncus canadensis)
Canadian rush (Juncus canadensis)
Canadian rush (Juncus canadensis)
spatulate-leaved sundews (Drosera intermedia)
spatulate-leaved sundews (Drosera intermedia)
spatulate-leaved sundews (Drosera intermedia)
spatulate-leaved sundews (Drosera intermedia)
thread-leaved sundews (Drosera filiformis)
thread-leaved sundews (Drosera filiformis)
thread-leaved sundews (Drosera filiformis)
thread-leaved sundews (Drosera filiformis)
brown beak-rush (Rhynchospora capitellata)
brown beak-rush (Rhynchospora capitellata)
brown beak-rush (Rhynchospora capitellata)
white beak-rush (Rhynchospora alba)
white beak-rush (Rhynchospora alba)
white beak-rush (Rhynchospora alba)
bog yellow-eyed grass (Xyris difformis)
bog yellow-eyed grass (Xyris difformis)
bog yellow-eyed grass (Xyris difformis)
bog yellow-eyed grass (Xyris difformis)
twisted yellow-eyed grass (Xyris torta)
twisted yellow-eyed grass (Xyris torta)
twisted yellow-eyed grass (Xyris torta)
twisted yellow-eyed grass (Xyris torta)
marsh St. John's-wort (Triadenum virginicum)
marsh St. John's-wort (Triadenum virginicum)
marsh St. John's-wort (Triadenum virginicum)
marsh St. John's-wort (Triadenum virginicum)
southern bog clubmoss (Lycopodiella appressa)
southern bog clubmoss (Lycopodiella appressa)
southern bog clubmoss (Lycopodiella appressa)
southern bog clubmoss (Lycopodiella appressa)
rose pogonia (Pogonia ophioglossoides)
rose pogonia (Pogonia ophioglossoides)
rose pogonia (Pogonia ophioglossoides)
rose pogonia (Pogonia ophioglossoides)
grass-pink (Spiranthes cernua)
grass-pink (Spiranthes cernua)
grass-pink (Spiranthes cernua)
grass-pink (Spiranthes cernua)
nodding ladies-tresses (Spiranthes cernua)
nodding ladies-tresses (Spiranthes cernua)
nodding ladies-tresses (Spiranthes cernua)
nodding ladies-tresses (Spiranthes cernua)
arethusa (Arethusa bulbosa)
arethusa (Arethusa bulbosa)
arethusa (Arethusa bulbosa)
arethusa (Arethusa bulbosa)
ragged fringed orchis (Platanthera lacera)
ragged fringed orchis (Platanthera lacera)
ragged fringed orchis (Platanthera lacera)
ragged fringed orchis (Platanthera lacera)
Plymouth gentian (Sabatia kennedyana)
Plymouth gentian (Sabatia kennedyana)
Plymouth gentian (Sabatia kennedyana)
Plymouth gentian (Sabatia kennedyana)
Plymouth gentian (Sabatia kennedyana)
pitch pine (Pinus rigida)
pitch pine (Pinus rigida)
pitch pine (Pinus rigida)
pitch pine (Pinus rigida)
eastern red cedar (Juniperus virginiana)
eastern red cedar (Juniperus virginiana)
eastern red cedar (Juniperus virginiana)
eastern red cedar (Juniperus virginiana)
bayberry (Morella pensylvanica)
bayberry (Morella pensylvanica)
bayberry (Morella pensylvanica)
bayberry (Morella pensylvanica)
sheep laurel (Kalmia angustifolia)
sheep laurel (Kalmia angustifolia)
sheep laurel (Kalmia angustifolia)
sheep laurel (Kalmia angustifolia)