Nature Atlas

How Nature Works
Sign In
Text size
100%
Theme
Biome

Seagrass Meadow

Marine and Coastal Biomes

A seagrass meadow is a marine biome formed by seagrasses, flowering plants that grow fully submerged in shallow coastal and estuarine waters and anchor themselves in seafloor sediment with roots and rhizomes rather than living free-floating the way algae do. These meadows are among the most productive ecosystems in the ocean, sheltering and feeding a wide range of marine life, from crabs and shrimp to commercial fish such as cod and flatfish, and serving as a refuge for vulnerable species including seahorses, sea turtles and dugongs as well as a nursery ground for young shrimp and scallops. Beyond the species they support directly, seagrass meadows dissipate wave energy to help protect coastlines, trap sediment and absorb excess nutrients to improve water quality, and lock large amounts of carbon into ocean floor sediment, making them an important natural carbon sink. The biome is in steep decline worldwide, lost to pollution, destructive fishing practices and overfishing that unbalances the food webs meadows depend on.

Facts
Climate
Annual Precipitation (mm)
990 1
Typical Low Temperature (C)
0 2
Source states seagrasses as a functional group inhabit broad temperature ranges from 0 to 45C; 0C is the lower bound of that group-wide range, not a single site figure. Individual species have narrower optima (roughly 11.5 to 32C depending on tropical or temperate species).
Typical High Temperature (C)
45 2
Source states seagrasses as a functional group inhabit broad temperature ranges from 0 to 45C; 45C is the upper bound of that group-wide range, not a single site figure. Individual species have narrower optima (roughly 11.5 to 32C depending on tropical or temperate species).
Seagrass Meadow
Filter Results12 entries
Connections

Demonstrates

Source Blue Carbon (Wikipedia)

Home To

Source Alligator pipefish (Wikipedia)
Blind shark, Species
Source Blind shark (Wikipedia)
Box Crab, Species
Source Wikipedia: Calappa (crab)
Dugong, Species
Source Dugong (Wikipedia)
Emerald Crab, Species
Source SeaLifeBase: Mithraculus sculptus
Source Giant Cuttlefish (Wikidata)
Source Green Sea Turtle (Wikipedia)
Source Holothuria edulis (Wikipedia)
Source Wikipedia: Tachypleus gigas
Source Wikipedia: Lined seahorse
Seed Shrimp, Species
Source Wikipedia: Ostracod
Source Slender Seahorse (Wikipedia)
Sources
1. Precipitation (Wikipedia)
WikipediaWikipedia, Precipitation, lead section (same ocean-surface figure as 7 sibling marine biomes)
Quote, Wikipedia, Precipitation, lead section (same ocean-surface figure as 7 sibling marine biomes)
the globally averaged annual precipitation is 990 millimetres (39 in), but over land it is only 715 millimetres (28.1 in)
View the Source
2. Optimum Temperatures for Net Primary Productivity of Three Tropical Seagrass Species (PMC)
PMC (National Library of Medicine)
  • Introduction section, seagrass thermal tolerance sentence (lower-bound figure)
    Seagrasses as a functional group inhabit broad temperature ranges from 0 to 45°C, and particular species can tolerate ambient water temperature that varies by more than 20°C annually
  • Introduction section, seagrass thermal tolerance sentence (upper-bound figure)
    Seagrasses as a functional group inhabit broad temperature ranges from 0 to 45°C, and particular species can tolerate ambient water temperature that varies by more than 20°C annually
View the Source
Dugong (Wikipedia)
Wikimedia FoundationHome To: Dugong, Wikipedia intro: "on seagrass communities for subsistence and is thus restricted to the coastal habitats that support seagrass meadows, with the largest dugong concentrations typ..."View the Source
Green Sea Turtle (Wikipedia)
Wikimedia FoundationHome To: Green Sea Turtle, Wikipedia 'Green sea turtle': inhabit shallow lagoons, feeding mostly on seagrassesView the Source
Giant Cuttlefish (Wikidata)
WikidataHome To: Giant Cuttlefish, IntroductionView the Source
Alligator pipefish (Wikipedia)
Home To: Alligator pipefish, Lead section
Quote, Home To: Alligator pipefish, Lead section
This fish lives in habitats of seagrass and seaweed, and hides by positioning itself vertically with its head down amidst the similar-coloured fronds of vegetation.
View the Source
Blind shark (Wikipedia)
Home To: Blind shark, Lead section
Quote, Home To: Blind shark, Lead section
Found along the coast of eastern Australia, this nocturnal, bottom-dwelling species is common in rocky areas and seagrass beds from the intertidal zone to a depth of 140 m (460 ft).
View the Source
Blue Carbon (Wikipedia)
Demonstrates: Carbon Cycle, Coastal ecosystems passage, carbon sink sentence
Quote, Demonstrates: Carbon Cycle, Coastal ecosystems passage, carbon sink sentence
Mangroves, salt marshes and seagrasses can store carbon and are highly efficient carbon sinks.
View the Source
Wikipedia: Calappa (crab)
WikipediaHome To: Box Crab, Distribution section
Quote, Home To: Box Crab, Distribution section
They are found from the shore to depths of around 150 m (500 ft), with some species being found deeper at around 250 m (820 ft). They commonly inhabit reef areas, seagrass beds, and sandy flats where they can easily burrow and camouflage with the surrounding environment.
View the Source
Holothuria edulis (Wikipedia)
Home To: Holothuria Edulis, article text (habitat biome), EntityId 342681, target B295969
Quote, Home To: Holothuria Edulis, article text (habitat biome), EntityId 342681, target B295969
It is found in a number of different habitats including on sandy or muddy substrates, on coral rubble and in seagrass meadows.
View the Source
Wikipedia: Lined seahorse
Home To: Lined Seahorse, Habitat and distribution
Quote, Home To: Lined Seahorse, Habitat and distribution
The habitat of the lined seahorse consists of marine vegetation, such as suspended Sargassum, seagrass, sponges, and mangroves.
View the Source
Wikipedia: Tachypleus gigas
Home To: Indo-Pacific Horseshoe Crab, Distribution and habitat
Quote, Home To: Indo-Pacific Horseshoe Crab, Distribution and habitat
Tachypleus gigas inhabits seagrass meadows, sandy and muddy shores at depths to 40 m (130 ft); it is the only horseshoe crab to have been observed swimming at the surface of the ocean.
View the Source
Slender Seahorse (Wikipedia)
Home To: Slender Seahorse, Habitat and distribution
Quote, Home To: Slender Seahorse, Habitat and distribution
The slender seahorse has an affinity for coral reefs and seagrass beds and can be found on gorgonian coral, seagrass, mangroves, and Sargassum.
View the Source
Wikipedia: Ostracod
Home To: Seed Shrimp, Bioluminescence
Quote, Home To: Seed Shrimp, Bioluminescence
The glowing courtship lasts for about an hour and begins shortly after sunset on moonless nights, when the ostracods, normally found on seagrass and coral reefs, sense that the water is dark enough.
View the Source
SeaLifeBase: Mithraculus sculptus
SeaLifeBaseHome To: Emerald Crab, Biology
Quote, Home To: Emerald Crab, Biology
Dwells in reef and seagrass habitats in Belize.
View the Source

Take a Related Quiz

Comments (0)
No comments yet. Be the first to share a thought.
Reader Challenges (0)
No disputes yet. Spotted an error or a better source? Open the first one.