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Seagrass

Photos: salicicola.com

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Overview

Estuarine or marine sparsely to densely vegetated communities, dominated by eelgrass with a strong invertebrate component in the community that is completely submerged at high tide.

Permanently submerged saline to brackish, subtidal to intertidal sand/mud flats that support vascular plant beds, in open ocean or near shore in, usually, less than 2m of water. Includes beds of tidal creeks draining salt marshes and river mouths. The salinity of the water changes with the tides and flow of rivers or streams. Actual species present at any place depend on salinity, water temperature, depth, and substrate type.

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 Seagrass natural community page.

 

SEMPBA Archives: Seagrass

 

Species Name

eelgrass (Zostera marina)

widgeon grass (Ruppia maritima)

waterweed (Elodea nuttallii)

coontail (Ceratophyllum demersum)

sago pondweed (Stuckenia pectinata)

horned pondweed (Zannichellia palustris)

sea lettuce (Ulva spp.)

red algae (Polysiphonia spp.)

wild rice (Zizania aquatica)

river arrowhead (Sagittaria subulata)

Parker's pipewort (Eriocaulon parkeri)

Long's bitter-cress (Cardamine longii)

quillwort (Isoetes riparia)

saltpond spike-rush (Eleocharis parvula)

 

eelgrass (Zostera marina)

By User Lamiot on fr.wikipedia - F Lamiot, CC BY-SA 1.0, https://commons.wikimedia.org/w/index.php?curid=1316764

widgeon grass (Ruppia maritima)
widgeon grass (Ruppia maritima)
widgeon grass (Ruppia maritima)
widgeon grass (Ruppia maritima)
waterweed (Elodea nuttallii)
waterweed (Elodea nuttallii)
waterweed (Elodea nuttallii)
waterweed (Elodea nuttallii)
coontail (Ceratophyllum demersum)
coontail (Ceratophyllum demersum)
coontail (Ceratophyllum demersum)
coontail (Ceratophyllum demersum)
sago pondweed (Stuckenia pectinata)

horned pondweed (Zannichellia palustris)

 

By Christian Fischer, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=21435401

sea lettuce (Ulva lactuca)

By Kristian Peters -- Fabelfroh 08:32, 12 December 2006 (UTC) - photographed by myself, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=1453578

red algae (Polysiphonia spp.)

 

Photo credit: Malcolm Storey, http://www.inaturalist.org/guide_taxa/293080

wild rice (Zizania aquatica)
wild rice (Zizania aquatica)
wild rice (Zizania aquatica)
wild rice (Zizania aquatica)

river arrowhead (Sagittaria subulata)

 

Photo credit: Barre, http://alismataceae.e-monocot.org/taxonomy/term/142

Parker's pipewort (Eriocaulon parkeri)

 

Photo credit: Sean Blaney, https://www.inaturalist.org/observations/4871596

Long's bitter-cress (Cardamine longii)

 

Photo credit: http://southbaytaskforce.blogspot.com

shore quillwort (Isoetes riparia)

 

Photo credit: Carl Taylor, http://nefern.info/picpages/isorippx.htm

saltpond spike-rush (Eleocharis parvula)
saltpond spike-rush (Eleocharis parvula)
saltpond spike-rush (Eleocharis parvula)
saltpond spike-rush (Eleocharis parvula)