multicellular primary producers seaweed, marine plants, seagrasses, salt marsh plants, mangroves
TRANSCRIPT
Multicellular Primary ProducersSeaweed, marine plants, seagrasses,
salt marsh plants, mangroves
What is seaweed?
• Are Seaweeds plants?
• No they are algae. Algae is a protist
What is algae?• Algae are photosynthetic, like
plants.• Algae are"simple" because
their tissues are not organized into the many distinct types found in land plants.
• Algae is either micro algae or macro algae
• Macro algae is called “seaweed”
Macro algae
Micro algae
Macro algae
Micro algae
unicellularunicellularmulticellularmulticellular
Structure of Seaweed
• Thallus• Lacks vascular tissue, roots, stems, leaves• Frond, or blade• Holdfast, NOT ROOTS• Stipe• Gas bladders
• importance of algae
Importance of Algae• 70% of foods, beverages, cosmetics, personal
care, pet care, etc... items in an average shoppers cart have algae ingredients. Yummy……….
• The cell wall of algae provides carrageenan:Thickening agent used in our products:
spirulena as a food
Algae good for people?????
Macroalgae “Seaweeds”
3 types of seaweed• Red• Brown• Green
• Based on light capturing pigments: Red and Brown algae can thrive in deeper waters.
Algae is not always good for you• Long Island toxic algae
• shellfish closing now
open• Moviemaker Alfred
Hitchcock appears to have drawn some inspiration for one of his classic thrillers, "The Birds," with the help of toxin-producing algae.
Reproduction of AlgaeAsexual
Sexual: Reproduce through__________
Name that algae,Red, Green, Brown?
Micro or Macro?
Name that algae,Red, Green, Brown?
Micro or Macro?
Name that AlgaeRed, Green, Brown?
Micro or Macro?r
Background is a kelp forest
Name that AlgaeRed, Green, Brown?
Micro or Macro?
What Criteria did you use to classify algae
Importance of Algae Take 5 minutes look through your
notes: Class work• 1. 9.• 2. 10.• 3. 11.• 4. 12.• 5. 13.• 6. 14.• 7. 15.• 8. 16.
Marine Flowering Plants/different Algae
• General characteristics they are just like land plants (angiosperms) they have:– Vascular tissue– Roots, stems, leaves– Seeds and fruitsExamples– Seagrass beds– Salt marshes– Mangrove forests
Mangrove forest in Florida Keyes
Seagrasses• Maintain water clarity, trapping
sediments with leaves.• They stabilize the bottom with their
roots • They provide shelter for fish,
shellfish.• manatees, urchins, conches and sea
turtles, eat seagrass blades..
Eel Grass beds on Long Island
Salt Marsh Plants• Marsh Plants
– Spartina alterniflora– Main marsh plant found On LI estuaries.– 60% to 80 % of the commercial marine fisheries
resources depend on estuaries for part of or all of their life cycle.
– http://life.bio.sunysb.edu/marinebio/spartina.html
How does the water travel on Long Island? What is the importance of
salt marshes?
• http://vimeo.com/2233233
Salt Marsh Plants• Once destroyed on Long
Island as “waste” property to develop and build homes; now they are preserved. Why?
Cedar Beach, Miller Place
Stony BrookLong Island, Note preserved and Unpreserved land
Forests of the Tide• At the intersection of land and sea, mangrove
forests support a wealth of life, from starfish to people, and may be more important to the health of the planet than we ever realized.
Mangrovevideo on mangroves