L11 salt marshes ap


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L11 salt marshes ap

  1. 1. Aim: To understand a unique coastal environment: A salt marsh 1. What are salt marshes? 2. Why are they special?
  2. 2. What is a salt marsh? • Watch the video here. • What are they? • A salt marsh is an accumulation of mud and silt in a sheltered part of the coastline. They usually form behind a spit (p167). • Why are they special? • They support a unique ecosystem e.g. Plants that are salt tolerant (plants that like a salty environment). LO; To know what a Salt Marsh is and why they are special
  3. 3. Keyhaven Salt Marsh
  4. 4. Keyhaven Salt Marsh
  5. 5. Keyhaven Salt Marsh
  6. 6. Keyhaven Salt Marsh
  7. 7. How does a salt marsh form? • Read the two paragraphs on page 167. LO; To know what a Salt Marsh is and why they are special
  8. 8. Key terms…… Copy these down into your exercise book Pioneer plants First plant to colonise an area that has adapted to the living environment. Vegetation Sequence of vegetation species succession that colonise an environment. Accumulation Build up of material Species A group of living organisms made up of similar individuals Colonise The establishment of a new species in an area. LO; To know what a Salt Marsh is and why they are special
  9. 9. Flow Diagram – salt marsh formation Have a go with your cards (don’t stick them onto your book yet!) Mud and silt accumulate in a sheltered part of the coastline Salt tolerant plants such as cord grass start to colonise the mudflats The early plants like cord grass are called Pioneer plants Its tangled roots help to stabilise the sediment and trap mud Over time as rainwater washes out the salt, the decomposing plant matter improves the fertility of the soil New plant species start to colonise the area Over hundreds of years a secession of vegetation and plants develop. LO; To know what a Salt Marsh is and why they are special
  10. 10. Case Study: Keyhaven Marshes p168 • Rich natural habitat that supports rich diversity of wildlife.
  11. 11. Case Study: Keyhaven Salt Marsh • Produce an information booklet on Keyhaven Salt Marshe for the local tourist office. • It need to include the following features for tourists; 1. How it is being conserved (1996) 2. How it is being used sustainably in the area 3. A map 4. Photos 5. 5 point guide to protect the marsh on the tourists visit 6. Wildlife species guide  for the ornithologists. • Good website; www.conservancy.co.uk/learn/wildlife/saltmarsh.htm LO; To know what a Salt Marsh is and why they are special
  12. 12. Guide to Keyhaven Salt Marshes All you ever need to know about where this amazing coastal ecosystem How is it being conserved? How is it being used sustainably? Where is Keyhaven Salt Marsh? How to Protect the marsh on your visit. 1. Don’t forget a lot of the plants are fragile so don’t go walking on any! 2. Birds nest are ……