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H2O Summit 2014 Frogs and Toads in Montgomery County

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Presentation from the 2014 H2O Summit on Saturday, March 22.

Includes:
-What is FrogWatch?
-Why are frogs and toads important?
-Common frogs and toads found in Montgomery County

Published in: Education
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H2O Summit 2014 Frogs and Toads in Montgomery County

  1. 1. By:Virginia VassalottiBy:Virginia Vassalotti Chesapeake Conservation Corps Intern,Chesapeake Conservation Corps Intern, Montgomery County Department of Environmental ProtectionMontgomery County Department of Environmental Protection
  2. 2.  Nationwide program run by the Association of Zoos and Aquariums (AZA)  Volunteers identify frog and toad species calls at night For more information visit: www.mygreenmontgomery.org/frogwatch or www.frogwatch.org Ribbit, Ribbit Sue Muller, Howard County FrogWatch Chapter Coordinator © Jim Harding, MSU  Learn more about wetlands and species that live in them!  Help conserve local amphibians!
  3. 3.  Role in food web  Bioindicators – sensitive to the environment 1. Exposed to air (adult) and water toxins (larval tadpole) 2. Semi- permeable skin © www.berkley.edu© www.berkley.edu © Donna L. Watkins© Donna L. Watkins Tadpoles feed on algae; fed on by fish and birds Frogs feed on insects; fed on by fish, birds
  4. 4. 1) Spring Peeper 2) Wood Frog 3) Upland Chorus Frog 4) Pickerel Frog 5) Southern Leopard Frog 6) American Toad 7) American Bullfrog 7) Fowler’s Toad 8) Northern Green Frog 9) Gray Treefrog 10) Cope’s Gray Treefrog 11) Northern Cricket Frog
  5. 5. Species Feb March April May June July Aug Wood Frog x x Spring Peeper x x Upland Chorus Frog x x x Pickerel Frog x x Southern Leopard Frog x x x x American Toad x x x x x American Bullfrog x (late) x x x Fowler's Toad x (late) x x x Northern Green Frog x (late) x x x Gray Treefrog x x x Cope's Gray Treefrog x x x Northern Cricket Frog x x x x Note: calling dates differ year to year. 2013-2014 was a cold winter. Species began calling later!
  6. 6.  Able to thaw out from freezing solid!  Only frog found in Arctic Circle  Short, raspy quacks © Jim Harding, MSU© Jim Harding, MSU
  7. 7.  Sound of spring!  “Peep, peep, peep” © Jim Harding, MSU© Jim Harding, MSU  Easy to hear, hard to find!  Smallest frog in the County (¾”-1 ¼”) X on back – latin Pseudacris crucifer
  8. 8.  “Crrreek”  Sounds like a finger running over the teeth of a comb  Prefers slow or non-moving waters © John White© John White
  9. 9.  Steady, snore-like croak.  May last up to 2 seconds  More common than the Southern Leopard Frog  Found near streams Pickerel FrogPickerel Frog Southern Leopard FrogSouthern Leopard Frog Spots in rows down back Yellow underside White spot on tympanum or “ear”
  10. 10.  Series of short, throaty, chuckle- like croaks  More commonly found on the coastal plain (farther east)  Not common in the County White spot on the tympanum or ear
  11. 11.  Musical trill lasting 5-30 seconds  Simultaneous whistle and hum © Jim Harding, MSU© Jim Harding, MSU  1-2 warts per dark spot  Can be found anywhere – yards, fields, forests
  12. 12.  1-4 second “wraaaah”  3 or more warts per dark spot  More commonly found on coastal plain in sandy areas
  13. 13.  “Twang” of a banjo string  Tadpoles over-winter and metamorphose next year Dorsolateral ridge  Similar in appearance to American Bullfrog – smaller in size
  14. 14.  Deep-pitched “jug-o-rum”  Largest frog in Montgomery County  2-3 year tadpole stage Similar in appearance to Green Frog - no dorsolateral ridge
  15. 15.  Resonating trill, slower than Cope’s Gray Treefrog  Extra set of chromosomes (48 total)  Raspy resonating trill, faster and less musical than the Gray Treefrog  24 chromosomes  Visually indistinguishable  Differentiate by call or chromosome count Gray TreefrogGray Treefrog Cope’s Gray TreefrogCope’s Gray Treefrog © Jim Harding, MSU© Jim Harding, MSU
  16. 16.  Sounds like two glass marbles being tapped together  Or shaking of a spray paint can © Jim Harding, MSU © Jim Harding, MSU  Small treefrog that does not climb  Highly variable in color
  17. 17.  Powerpoint: www.slideshare.net/frogwatch  Montgomery County FrogWatch: www.mygreenmontgomery.org/frogwatch  Frogs and Toads in Montgomery County: http://www.montgomerycountymd.gov/dep/water/frogs- and-toads.html  Frog and Toad Calls CD:  Cornell Lab of Ornithology “Voices of the Night:The Calls of the Frogs and Toads of Eastern North America” Questions? Email: DEP.FrogWatch@montgomerycountymd.gov

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