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The Chesapeake bay presentation

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					THE CHESAPEAKE   BAY
PRESENTATION
 What is a watershed

 It covers 64,000 square miles between
  Vermont North Carolina

The Chesapeake bay is huge
     The chesapeak bay is a ecosystem


 It covers a surface area of over 2,200 square
  miles approximately 3,500 square
  kilometers.
 Over 2500 different kinds of plants and
  animals live in the bay area
How is a bay like your
ecosystem
 Over 13 million people work, play, live. One
  way or another , pollutants from all of these
  people wind up in the bays waters .
 Chesapeake bay is covered with farms
  factories cities and highways schools and
  apartment buildings, landfills and
  campgrounds restaurants and marinas.
Its all down hill

 Just imagine industrial waste pouring out of Baltimore's factories
   ,puddles of motor oil on the highway, extra fertilizer and pesticides
   from lawns in virginal and Delaware, muddy runoff from
   construction sites in Maryland, acid from mines in west virginal , cow
   manure from Pennsylvania dairy farms, and sewage from 13 million
   people’s toilets.
 With all this human made pollution no wonder the bay is in trouble.
Too many pollutants

 Too many nutrients from human sewage,
  cows manure , and fertilizer overloading the
  bay.
 Too many algae cloud the water and keep
  light from reaching the grass below.
The importance of grass

 The grass beds are tensile to the bays health.
 Grass beds near the shore line help absorb
  the pounding of the waves.
Sediment kills

 Forests keep sediment out of the
  Chesapeake.

 Some sedimentation occurs naturally. But
  humans cause most of it, especially when we
  cut down trees and other vegetation.
Oysters natures filters

 Oysters serve as natural filters, helping keep
  the water clear. To trap its food, microscopic
  algae, an oyster pumps in water-up to two
  gallons per hour!

 Chesapeake was pilled high with oyster beds
  but only one percent of the oysters are left.
Go fish

 But you may have heard of others, such as
  shade, rockfish (striped bass), herring perch
  eel, and blue fish. Some eat plants and algae.
  Some are bottom feeders and hunt in oyster
  or grass beds for snails, small crabs, and
  worms. Some eat small fish
 Why are fisherman catching fewer fish? there
  are many reasons. People built dams across
  the rivers in watershed area.
Blue crabs: The last great
catch.
 The chesapeake bay sill produces about half
  of the nations blue crab harvest. They are the
  last great catch in the bay. Blue crabs are real
  survivors. They are scavengers who eat
  almost anything they can find.
Searching for the solution

 In the real world of the chesapeake bay, the
  problems are much more complex. And the
  pollutions are too
 Everyone agrees that the chesapeake bay has
  many problems, most of the human- made.

				
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posted:11/16/2012
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