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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

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Honors marine biology

Honors Marine Biology

Module 12

Continental Shelf Communities

Part 2

February 28, 2013


Class challenge
Class Challenge

Famous Autographs


Field trip
Field Trip

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.


Class quiz
Class Quiz

Define:

  • Benthos

  • Nekton

  • Plankton


Define
Define:

4. Subtitle

5. Infauna

  • Epifauna

    7. Meiofauna:


Define and draw
Define and Draw

8. Continental Shelf




Define and draw1
Define and Draw water regardless of the tides.

  • Continental Shelf: is a gently sloping area beginning at a point near land, just below the low-tide mark. It continues out to the shelf break, with is the outer-edge of the continental shelf.


Continental shelf communities
Continental Shelf Communities water regardless of the tides.

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.

  • Soft-bottom shelf communities

  • Hard-bottom shelf communities

    The type of substrate determines what types of organisms can populate the ocean floor.


Hard bottom subtidal communities
Hard-Bottom Subtidal Communities water regardless of the tides.

There are two major categories:

  • Rocky Bottomed Communities

  • Kelp Beds


Kelp beds and forests
Kelp Beds and Forests water regardless of the tides.

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.


Kelp forests
Kelp Forests 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.


Kelp bed
Kelp Bed communities, in the same way that trees create canopy structures in forests.

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 communities, in the same way that trees create canopy structures in forests.

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 communities, in the same way that trees create canopy structures in forests.


Kelp communities, in the same way that trees create canopy structures in forests.

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.


Kelp communities, in the same way that trees create canopy structures in forests.

As a result, they need constant movement of water flowing past them in order to obtain a regular supply of necessary nutrients.


Kelp communities, in the same way that trees create canopy structures in forests.

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 communities, in the same way that trees create canopy structures in forests.

http://youtu.be/GcbU4bfkDA4

JEAN-MICHEL COUSTEAU: OCEAN ADVENTURES | Kelp Forest | PBS

(food web)

http://youtu.be/v_aSl3iL7rM


Life In The Kelp Forest communities, in the same way that trees create canopy structures in forests.

http://youtu.be/CdRVBEaMo34


Lab animals and plants in a kelp forest
Lab: Animals and Plants in a Kelp Forest communities, in the same way that trees create canopy structures in forests.

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

Kelp: Producer

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

Bacteria: Decomposer

Fungus: Decomposer

Humans: Consumer, Omnivore

Shark: Consumer, carnivore

Killer Whale: :Consumer carnivore

Albatross:Consumer, Consumer, Carnivore

Annahinga: Consumer, Carnivore


Mapping
Mapping communities, in the same way that trees create canopy structures in forests.

  • Identify on your map where the major Kelp beds are located.

  • See figure 12.11


Dirty jobs
Dirty Jobs communities, in the same way that trees create canopy structures in forests.

First Mike gets dirty harvesting kelp to feed abalone. Netflex


Homework
Homework communities, in the same way that trees create canopy structures in forests.

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)


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