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Submerged Aquatic Vegetation

Conceptual Model

The ability to restore or enhance coastal habitats successfully depends on resource managers’ understanding of the relationships that occur within them. Conceptual models have become an increasingly popular tool used to document these relationships to support coastal habitat restoration planning (Ogden et al. 2005, Rudnick et al. 2005). To facilitate our understanding of coastal habitats in the Gulf of Mexico, GoMRC has developed an ecological conceptual model for submerged aquatic vegetation (SAV), including seagrasses, that occur throughout the Gulf of Mexico.

For definitions and more information on each element of the conceptual model, click on the terms below. A web-based version that illustrates relationships among these elements can be found in the Conceptual Model Explorer.

Stressor Controlling Factor Seagrass Process Function Value

BIOLOGICAL

Algae
Bioturbation
Disease
Herbivory
Invasive Species
Overfishing

CHEMICAL

Contaminants
Nutrient Discharge
Large River Contaminants
Large River Nutrient Discharge

CLIMATIC EVENTS

Flooding
Sea Level Rise
Storm Events

PHYSICAL

Aquaculture
Dredging
Filling
Large River Fresh Water Volume
Harvest
Impervious Surfaces
Marinas
Overwater Structures
Large River Sediment
Shoreline Armoring
Subsidence
Thermal Pollution
Vessel Activity (Scouring)
Vessel Activity (Anchoring)
Vessel Activity (Grounding)
Vessel Activity (Wakes)
Water Diversion

BIOLOGICAL

Top Down Mechanisms

CHEMICAL

Dissolved Oxygen
Nutrients
Salinity
Substrate Quality
Water Quality

PHYSICAL

Bathymetry/Elevation
Current
Inundation
Light
Temperature
Sediment Dynamics
Substrate Type
Wave Exposure

STRUCTURE

Halodule wrightii
Halophila decipiens
Halophila engelmannii
Ruppia maritima
Syringodium filiforme
Thalassia testudinum
Vallisneria Americana

PROCESS

Carbon Sequestration
Filtration & Uptake of Nutrients
Food Web Support
Geochemical Cycling
Habitat (Rearing)
Habitat (Refuge)
Habitat (Spawning)
Habitat (Epiphytes)
Organic Contaminant Processing
Organic Matter Export
Oxygen Production
Primary Production
Sediment Stabilization
Sediment Trapping
Wave & Current Energy Dampening

FUNCTION

Avifauna Production
Biodiversity Maintenance
Trophic Links
Erosion Prevention
Fish Production
Invertebrate Production
Storm Surge Protection
Water Quality Maintenance
Wildlife Production

VALUE

Aesthetics
Clean Water
Cultural
Fishing
Non-Use Values
Property Protection
Recreation
Tourism

 

More on SAV >>