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Seagrass

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Jennifer Joseph

on 30 August 2013

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Transcript of Seagrass

Picture Gallery:
Seagrass Beds
Jennifer Joseph and Emma Kaufman

Physical Characteristics:
Zonation:
-Seagrasses are limited to certain depths because of their need for sunlight to perform photosynthesis.

-They are usually located in estuaries, lagoons, and bays, but are also found in deeper waters like on the continental shelf in the Gulf of Mexico. (paddle grass can live as deep as 130 ft)

-Salinity, light, air exposure are the factors that limit where seagrass can live. (Photic Zone)
Distribution:
-Six global bioregions are presented: four temperate and two tropical.
-The temperate bioregions include:
Dominant Plants & Animals:
Habitat Value:
Human Uses:
Human Abuses:
Bibliography:
This map shows the distribution of species of Seagrass worldwide.
Bay Scallops
Silverside Fish
-Grass-like plants that live completely submerged in marine and estuarine waters.

-Type of aquatic vegetation that has been specifically adapted to live under water

-They have evolved from terrestrial plants, but have some specialized characteristics that allow them to thrive underwater.

-Like terrestrial plants, seagrasses have leaves, roots, tissues, flowers, seed, and produce their own food through photosynthesis.

-However, seagrasses lack strong supportive stems and rely on their own buoyancy to keep near the surface.
Review:
- Seagrass produce their food by the use of photosynthesis

-Seagrass lack strong supportive stems and rely on their own buoyancy to keep near the surface.
Websites used:
http://www.dep.state.fl.us/coastal/habitats/seagrass/
http://www.sms.si.edu/IRLspec/Seagrass_Habitat.htm
Review:
-Seagrasses are limited to certain depths because of their need for sunlight

-Seagrasses are usually located in estuaries, lagoons, and bays

-Some important factors are salinity, light, air exposure
Websites used:
http://www.flmnh.ufl.edu/fish/southflorida/seagrass/zonation.html
-the Temperate North Atlantic,
-the Temperate North Pacific,
-the Mediterranean,
-the Temperate Southern Oceans.

Found almost on as coastlines.
Review:
-Six global bioregions are made up by
four temperate and two tropical.
Websites:
http://www.sciencedirect.com/science/article/pii/S002209810700305X
http://www.flmnh.ufl.edu/fish/southflorida/seagrass/Distribution.html

-Turtle Grass (Thalassia testudinum) (most abundant along florida coastline)

-Eel grass (Zostera marina) (most common NY)

-Widgeon grass (Ruppia maritime) (most common NY)
Plants:
Animals:

-Oyster Crassostrea virginica

-Bay Scallop Argopecten irradians

-Silverside Menidia berylina

-Green Turtle Chelonia mydas
Review:
Websites:
http://uwf.edu/rsnyder/ffnwf/seagras/seagras.html
-Seagrass beds stabilize sediments and limit erosion
-Seagrasses support nutrient cycling, oxygenate waters, and improve water quality.
-Seagrasses provide habitats for many species (like bluefish, bay scallops, and clams).
-Seagrass can also be used as an indicator for estuarine health and water quality because of the high levels of biodiversity supported by seagrasses.
-A single acre of seagrass may support as many as 40,00 fish (many of which are used in commercial fisheries)
Review:
-Seagrasses support nutrient cycling, oxygenate waters, and improve water quality.
-A single acre of seagrass may support as many as 40,000 fish.
-Seagrass beds stabilize sediments and limit erosion
Websites:
http://www.seagrant.sunysb.edu/Images/Uploads/PDFs/SeagrassMeeting07-Proceedings.pdfhttp://www.sms.si.edu/IRLspec/Seagrass_Habitat.htm
-Seagrass beds are vital to commercial fisheries. They provide food, shelter, and nursery areas that house commercial and recreational fishery species.

-Seagrass meadows also help dampen the effects of strong currents, which protects fish, invertebrates, and erosion of bottom areas.

- Overall, seagrass beds and the organisms living in it translate into a statewide economic benefit of 55.4 billion dollars annually.”

-Used in furniture and decorations

-People use the waters for recreational sports such as kayaking and fishing.
Review:
-Seagrass beds are vital to commercial fisheries. They provide food, shelter, and nursery areas that house commercial and recreational fishery species.
-People use the waters for recreational sports such as kayaking and fishing.
-Seagrass meadows also help dampen the effects of strong currents, which protects fish, invertebrates, and erosion of bottom areas.
Websites:
http://www.sms.si.edu/IRLspec/Seagrass_Habitat.htm
Physical Characteristics
http://www.dep.state.fl.us/coastal/habitats/seagrass/
http://www.sms.si.edu/IRLspec/Seagrass_Habitat.htm
Zonation
http://www.flmnh.ufl.edu/fish/southflorida/seagrass/zonation.html
Distribution
http://www.sciencedirect.com/science/article/pii/S002209810700305X
http://www.flmnh.ufl.edu/fish/southflorida/seagrass/Distribution.html
Dominant Plants and Animals
http://www.dep.state.fl.us/coastal/habitats/seagrass/
http://uwf.edu/rsnyder/ffnwf/seagras/seagras.html
Habitat Importance
http://www.seagrant.sunysb.edu/Images/Uploads/PDFs/SeagrassMeeting07-Proceedings.pdf
http://www.sms.si.edu/IRLspec/Seagrass_Habitat.htm
Human Uses
http://www.sms.si.edu/IRLspec/Seagrass_Habitat.htm
Human Abuses
http://www.sms.si.edu/IRLspec/Seagrass_Habitat.htm
-Pollution (both point and non-point sources), decreasing water clarity, and excessive nutrients in runoff (household chemicals, oils, pesticides, wastes, and other debris), are threatening seagrass populations and overall marine health.
-Overfishing
-Other threats to seagrass populations include storms, excessive grazing by herbivores, and diseases.
Review:
-Pollution (both point and non-point sources), decreasing water clarity, and excessive nutrients in runoff (household chemicals, oils, pesticides, wastes, and other debris), are threatening seagrass populations and overall marine health.
-Overfishing
-Other threats to seagrass populations include storms, excessive grazing by herbivores, and diseases.
-Eel grass (Zostera marina) (most common NY)
-Widgeon grass (Ruppia maritime) (most common NY)
-Oyster Crassostrea virginica
-Bay Scallop Argopecten irradians
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