The Neshaminy Creek

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The Neshaminy Creek

  1. 1. By Brad Dougherty & TJ Hunton The Neshaminy Creek
  2. 2. Our Project <ul><li>Our mission was to collect macroinvertebrates in the Neshaminy Creek to determine the water quality. </li></ul><ul><li>We researched the macroinvertebrates that we found in our samples, to determine the environment each one was capable of living in. </li></ul><ul><li>This identified the quality of the creek. </li></ul>
  3. 3. Collection Sites <ul><li>We collected samples from: </li></ul><ul><li>George School, near the train bridge </li></ul><ul><li>Tyler Park, the upper dam </li></ul><ul><li>Playwicki Park </li></ul>
  4. 4. Collection Sites <ul><li>Coordinates of collection sites at Tyler Park and Playwicki Park: </li></ul><ul><li>N 40 ° 13.933’ W 74 ° 58.449’ 88 ft </li></ul><ul><li>N 40 ° 13.935’ W 74 ° 58.449’ 89 ft </li></ul><ul><li>N 40 ° 13.893’ W 74 ° 58.435’ 109 ft </li></ul><ul><li>N 40 ° 10.655’ W 74 ° 57.389’ 34 ft </li></ul><ul><li>N 40 ° 10.663’ W 74 ° 57.389’ 53 ft </li></ul>
  5. 5. Types of Macroinvertebrates
  6. 6. Types of Macroinvertebrates
  7. 7. Types of Macroinvertebrates
  8. 8. Types of Macroinvertebrates
  9. 9. Types of Macroinvertebrates
  10. 10. Specimens <ul><li>We found three types of macroinvertebrates: </li></ul><ul><li>Zygoptera (Damselflies) </li></ul><ul><li>Hydropsychidae (Caddisflies) </li></ul><ul><li>Oligoneuriidae (Mayflies) </li></ul>
  11. 11. Zygoptera (Damselflies) <ul><li>Damselflies are found in good or fair quality water and are somewhat pollution sensitive. </li></ul>
  12. 12. Damselfly Facts <ul><li>Develop over one to four years </li></ul><ul><li>There are more than 4,700 species worldwide </li></ul><ul><li>Begin life underwater, hatching from eggs and spending their first stage of life as aquatic larva or nymphs </li></ul><ul><li>During this stage of their lives they breath through gills and are ferocious aquatic predators, feeding on other aquatic larva, tadpoles and small minnows </li></ul><ul><li>Damselflies are very similar to dragonflies and are hard to tell apart </li></ul>
  13. 13. Damselfly Description <ul><li>Large eyes </li></ul><ul><li>Large scoop-like lower lip </li></ul><ul><li>No gills on the sides or underneath the abdomen </li></ul><ul><li>Six long segmented legs on upper middle section of body </li></ul><ul><li>Long spindly legs </li></ul><ul><li>Narrow body with three oar-shaped tails (gills) that look like fans </li></ul>
  14. 14. Hydropsychidae (Caddisflies) <ul><li>Caddisflies are very pollution sensitive and are found only in good quality water. </li></ul>
  15. 15. Caddisfly Facts <ul><li>Some make houses or cases for themselves out of different materials such as rocks, sand, gravel, twigs or leaves using a glue-like substance secreted from their back end </li></ul><ul><li>Some spin webs to trap food from the flowing water </li></ul><ul><li>One generation hatches per year </li></ul><ul><li>Although most species are very sensitive to pollution, some are pollution tolerant </li></ul>
  16. 16. Caddisfly Description <ul><li>Up to 1 1/2 inches long </li></ul><ul><li>Very small or no antennae </li></ul><ul><li>Six segmented legs on upper middle section of body </li></ul><ul><li>Filamentous gills may be on the end of the body or on the underside </li></ul><ul><li>Two small, thick extensions at the end of the body and each has a single hook at the end </li></ul>
  17. 17. Oligoneuriidae (Mayflies) <ul><li>Mayflies are also pollution sensitive and found in good quality water. </li></ul>
  18. 18. Mayfly Facts <ul><li>About 700 species in North America </li></ul><ul><li>Develop in the stream over period of two weeks to two years </li></ul><ul><li>Live on exposed rock surfaces in fast current or buried in soft stream beds </li></ul><ul><li>Large numbers of flying adults may emerge from stream at the same time </li></ul>
  19. 19. Mayfly Description <ul><li>Platelike or feathery gills along the side of the abdomen </li></ul><ul><li>Two or three long hairlike tails </li></ul><ul><li>Six segmented legs on middle section of body </li></ul><ul><li>Each leg has one claw on the end </li></ul><ul><li>The body can be up to one inch long </li></ul><ul><li>Body is usually flat </li></ul><ul><li>Undeveloped mayflies are called nymphs </li></ul>
  20. 20. Stroud Water Research Center <ul><li>We consulted the Stroud Water Research Center’s Leaf Packet to identify the macroinvertebrates we found </li></ul><ul><li>The packet included flashcards and information on all types of stream macroinvertebrates </li></ul>
  21. 21. End
  22. 22. Bibliography <ul><li>http://www.people.virginia.edu/~sos-iwla/Stream-Study/Key/MacroKeyIntro.HTML </li></ul><ul><li>http://www.vtmnh.vt.edu/sos/page14.html </li></ul>

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