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Seagrass Bed (Biotic Group)

Component: Biotic

Unique Identifier: 567

Biotic Setting Benthic/Attached Biota
Biotic Class Aquatic Vegetation Bed
Biotic Subclass Aquatic Vascular Vegetation
Biotic Group Seagrass Bed
Biotic Community Ruppia maritima Herbaceous Vegetation
Syringodium filiformis - (Thalassia testudinum) Herbaceous Vegetation
Halodule wrightii Herbaceous Vegetation
Halophila decipiens Herbaceous Vegetation [Provisional]
Halophila engelmannii Herbaceous Vegetation
Halophila hawaiiana Herbaceous Vegetation [Provisional]
Halophila johnsonii Herbaceous Vegetation [Provisional]
Halophila minor Herbaceous Vegetation [Provisional]
Halophila ovalis Herbaceous Vegetation [Provisional]
Phyllospadix scouleri Herbaceous Vegetation [Provisional]
Phyllospadix serrultus Herbaceous Vegetation[Provisional]
Phyllospadix torreyi Herbaceous Vegetation [Provisional]
Thalassia testudinum - Syringodium filiformis Herbaceous Vegetation
Thalassia testudinum Herbaceous Vegetation
Vallisneria americana Estuarine Bayou Herbaceous Vegetation
Zostera marina Herbaceous Vegetation

Definition Tidal aquatic vegetation beds dominated by any number of seagrass or eelgrass species, including Cymocedea sp., Halodule sp., Thalassia sp., Halophilla sp., Vallisnera sp., Ruppia sp., Phyllospadix sp., and Zostera sp. Seagrass beds (Figure 8.15) may occur in true marine salinities, and they may extend into the lower salinity zones of estuaries.

Seagrass beds are complex structural habitats that provide refuge and foraging opportunities for abundant and diverse faunal communities in shallow waters. Seagrass beds require a specific set of ecological conditions for success, and they are generally perceived as areas of high environmental quality.

The list of biotic communities for this group is long: a few examples are provided below, and the complete list is available in Appendix F.