Upload
mswilliams
View
257
Download
0
Embed Size (px)
DESCRIPTION
Citation preview
Marine Flowering Plants
Kingdom Plantae
Angiosperms
• Autotrophs• Have flowers used for sexual reproduction• Have pollen• Have seeds• Multicellular eukaryotes• Mostly on land-very few in the ocean• Evolved from land plants
Seaweeds (algae) vs. Flowering Plants
Anchor vs. Water/Nutrient Absorption
Structure/Support
Photosynthesis
Three Groups
• Seagrasses• Mangroves• Marsh grasses
• VERY IMPORTANT habitat for young marine organisms – they all act like nursery grounds for countless species!
Seagrasses• Not true grasses• Found in temperate & tropical coastal bays &
estuaries• Subtidal = must stay underwater• Prefer shallow, calm, clear waters• Many species• Zostera (eelgrass) is our type on Long Island
More about seagrasses: http://www.flseagrass.org/ecology.php
Pictures of seagrass meadows
Seagrass Reproduction• Sexually – stringy pollen carried away by currents• Life cycle like land flowering plants• Asexually – using rhizomes under the sediment
Mangroves
• Woody trees• Tropical & Subtropical• Intertidal=Not fully submerged • Often roots sticking out of the
water• Several species – obviously,
none on Long Island
Mangrove Reproduction• Reproduce sexually – with flowers• “Pencil seed” germinates while
still attached to parent– If it’s low tide: seed sticks in the mud– If it’s high tide: seed is carried away
by current
Salt marshes
• Found in calm, sheltered bays on East and Gulf Coasts of the US
• Intertidal• Several species - our common ones are:– Spartina alterniflora – salt marsh cordgrass– Spartina patens – salt marsh hay
Virtual field trip through a salt marsh: http://zottoli.wordpress.com/saltmarshes/spartina-alterniflora-zone-2
/
Pictures of Salt Marshes
Marsh Grass Reproduction
• Sexually – flowers like flowering land plants• Asexually - rhizomes
To Learn More…
• http://www.sglearnonline.com/seaweed-and-marine-plants.html
• https://www.oceanclassrooms.com/ms101_u9_c1_sa_1
• Watch this: http://www.oceanclassrooms.com/resources/storyline/unit9/MS101_U9_C1_SA_1/story.html