Multicellular Primary Producers Flashcards
Macroalgae produce approximately ____ of the oxygen in our atmosphere,
25%
what is structurally more complex and have more elaborate
reproduction than unicellular algae
macroalgae
1Kelp general structure. bottom to top
rock or hard sediment
marine microbes produce __of the oxygen in our atmosphere
50%
2Kelp general structure. bottom to top
holdfast (roots)
4Kelp general structure. bottom to top
pneumatocyst (round structure)
3Kelp general structure. bottom to top
stipe (vines)
5Kelp general structure. bottom to top
blades (leaves)
blades, pneumatocyst, and stipe
thallus
what is 1000x more dense than air
seawater
states that a body immersed in fluid is buoyed up by a force equal to the
weight of the displaced liquid
Archimedes Principle
the body immersed in the fluid is __ up by a force equal to the weight of the __
fluid; displaced liquid
Buoyancy of seawater allows marine organisms to have
reduced structural materials
Buoyancy of seawater allows marine organisms to have the
presence of
planktonic communities
Chlorophyta
green algae
Rhodophyta
red algae
Coralline red algae are important
reef builders
Phaeophyta
brown algae
Sargassum
brown algae community, floats in the Gulf of Mexico and Caribbean Sea
Invasive species of macroalgae are often transported via
ballast water, in aquaculture, the
aquarium trade
Invasive species of macroalgae are often transported as__ on vessels.
fouling growth
Caulerpa
ex: a genus of macroalgae invasive to the Mediterranean.
True vascular plants that live completely underwater in the ocean are
seagrasses
sediment stabilizers, habitat for marine life, tourism
Seagrasses are valuable
manatees and green sea turtles
eat seaweed
eutrophication, dredging, boating, and commercial fishing
Seagrasses threats
Plants that grow well in saltwater
halophytes
what cant Saltmarsh grasses tolerate for long
complete submersion
Spartina alterniflora
smooth cordgrass
smooth cordgrass is an important species of what
saltmarsh grass in Louisiana
One of the most important saltmarsh zones for juvenile marine organisms is the
edge
subsidence, erosion, sea-level rise, and sediment starvation
lost of Louisiana coastal wetlands
trees and shrubs adapted to living in seawater and brackish water along tropical and
subtropical coasts.
Mangroves
Mangrove seedlings
propagules
Mangrove seedlings propagules
germinate on the tree
what is expanding to replace smooth cordgrass in South Louisiana
black mangroves
