Chapter 7 Section 2 Environmental Science Ms. Mandel.
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Transcript of Chapter 7 Section 2 Environmental Science Ms. Mandel.
Learning TargetsI can define a marine ecosystem.I can differentiate between the different types of marine
ecosystems.Coastal wetlandsEstuariesSalt marshesMangrove swampsRocky and sandy shoresCoral reefsOceansArcticAntarctic
Marine EcosystemsEcosystems that contain salt water
Coastal WetlandsCoastal land areas that are
covered by salt water for all or part of the time
Provides habitat and nesting areas
Absorbs excess rainProtects areas from
floodingFilters out pollutants and
sedimentsRecreational areas
BoatingFishingHunting
water.epa.gov
EstuariesArea in which fresh
water from a river mixes with salt water from the ocean
Considered to be a nutrient trap due to the mixing of the waters
Very productive ecosystem
Land masses protect them from the force of the ocean waves
Estuary Video
EstuariesWhat is the name of
our local estuary?Why is it an estuary?
Atlantic OceanHousatonic RiverConnecticut RiverThames RiverQuinnipiac River
ctcommunity.com
EstuariesSupport many
marine organismsPlenty of nutrients
PhytoplanktonBirdsClamsCrabsPlantsFish
ThreatsSewageIndustrial wasteAgricultural runoffHuman population
growth
Salt MarshesPart of an estuarySite where a river deposits mineral-rich mud
www.outerisland.org
Salt MarshOrganisms:ClamsFishBirdsPlantsTurtles
Acts as a nursery forShrimpCrabsFish
Protects them from predators
Absorb pollutantsProtects inland
areas
www.nhdfl.org
Mangrove SwampA marine swamp
characterized by the abundance of low to tall trees
Trees adapted to living in salt water
Mangrove treesWide, above ground
root system
www.globe-trotters.ch
Mangrove Swamp Video
Rocky and Sandy ShoresWhich one has more
plant and animal species?
Rocky shoreWhy?What is a barrier island?A long ridge of sand or
narrow island that lies parallel to the shore
Coral ReefsLimestone ridges built by tiny coral animals
called coral polyps and the algae that live inside them
Found in shallow, clear tropical seas
bailiffafrica.org www.glogster.com kodakboy.deviantart.com
Coral ReefsOne of the most
diverse ecosystems on earth
Fragile ecosystemWater cannot be too
hot, too cold, polluted, muddy or high in nutrients
What happens if this occurs?
Algae dies and coral bleaching happens
coralbleachingthefacts.blogspot.com
Coral Reefs in DangerWhy are coral reefs
in danger?Human activitiesGlobal warmingOil spillsPollutionOverfishing
Why is it important to not stress out or destroy a coral reef?
They grow back slowly and may not be able to repair itself
OceansOne of the least
productive of all ecosystems
Why?Not enough light and
nutrients for the phytoplankton
Depths of the ocean are perpetually darkMost food at the
ocean floor consists of dead organisms that fall from the surface
ThreatsPollution from
activities on landOverfishing
www.exploringnature.org
Arctic and Antarctic EcosystemsArctic ocean – rich
in nutrients from surrounding land masses
Supports large populations of plankton
Feeds a rich diversity of fish
Antarctic – only continent never colonized by humans
Plankton is the basis of its food web