Honors Marine Biology. Module 12 Continental Shelf Communities Part 2 February 28, 2013. Class Challenge. Famous Autographs. Field Trip. Our next field trip is scheduled for Friday, April 19, 2013 Hart’s Landing Fishing Tournament 10:00am to Noon
Honors Marine Biology
Continental Shelf Communities
February 28, 2013
Our next field trip is scheduled for
Friday, April 19, 2013
Hart’s Landing Fishing Tournament
10:00am to Noon
If you are 16 or older Florida Law requires you to have a current Fishing Lisence.
8. Continental Shelf
In our last class we discussed different kinds of Continental shelf communities. They can be divided into two groups based upon the substrate of the ocean floor.
The type of substrate determines what types of organisms can populate the ocean floor.
There are two major categories:
In most of the cold temperate areas of the world, hard-bottom shelf substrates are inhabited by large, brown seaweeds known as kelps.
Kelps can grow quite tall (up to 30 meters) compared to other seaweeds.
Kelp Beds create a third dimension to the hard-bottom communities, in the same way that trees create canopy structures in forests.
In Kelp Forests a canopy is formed when the kelp is tall enough to stretch from the bottom of the subtidal community all the way up to the surface.
As a result, most of the kelp is underneath the water, but some of it is on top of the water as well.
When kelps are not tall enough to reach the surface and form a canopy, the community they form is called a kelp forest.
Marine Scientists use they terms interchangeably, but really should not.
Kelp attach to the substrate by a holdfast instead of true roots.
The trunk-like stipe extends upward from the holdfast and ends in one or more leaf-like blades.
These are hollow floats, called pneumatocytes, located at the base of the blades. This helps keep the blade at the water’s surface instead of sinding to the bottom.
Kelp do not need roots to absorb their nutrients from the sediment; rather, they directly absorb nutrients from seawater, just like phytoplankton and other algae.
As a result, they need constant movement of water flowing past them in order to obtain a regular supply of necessary nutrients.
Kelps can grow so large, however, because their leather-like surface keeps them from being fragile like other algae.
They can better survive strong currents that would otherwise tear their long, thin stipes.
Underwater Kelp Forests
JEAN-MICHEL COUSTEAU: OCEAN ADVENTURES | Kelp Forest | PBS
Life In The Kelp Forest
Categorize Plants and Animals as a Producer Consumer Herbivore carnivore scavenger decomposer
Senorita Fish : Preditor, carnivore, Consumer
Sea lion- Big Flippers, ear flap :Consumer carnivore
Seals – no ear flap: Consumer carnivore
Stone crab : Consumer, herbivore, scavenger
Sea otter: Consumer, carnivore
Nudibranch (Sea Slug): Scavenger
Sea lettuce: Producer
Jelly Fish:: Carnivore, Consumer
Commorant: Consumer, carnivore
Sea urchin: omnivore, scavengers
Sea Anemone : Consumer, herbivore
Coral: Consumer, omnivore
Sponge: Consumer, herbibore, decomposer
Sea Star: Consumer, carnivore
Humans: Consumer, Omnivore
Shark: Consumer, carnivore
Killer Whale: :Consumer carnivore
Albatross:Consumer, Consumer, Carnivore
Annahinga: Consumer, Carnivore
First Mike gets dirty harvesting kelp to feed abalone. Netflex
What 2 items found in your kitchen contain Algae
Finish Reading Module 12 to page 303
Answer OYO to 12.13
Answer Study Guide
Class Quiz: Kelp Beds
Class Challenge: Photo of Animal that you took
Notebook Check on March 7th (Module 11)