Bill Crouch Introduction Drift Fence & Pitfall Arrays Calling Anuran Surveys Egg Mass Counts Preliminary Results

Scientists in the Field Preliminary Results ( data should not be cited) Ponds with maximum surface areas of only 612 m2 (pond 1) and 1455 m2 (pond 2) yielded populations of adults of 1432 and 480 and populations of metamorphs and juveniles of 2083 and 2332 respectively. Pond 1 is located within the 13,817 acre Arcadia Management Area and Pond 2 on private land surrounded on two sides by state roads and 50 acres of upland forest. By running the Drift Fence Array (DFA) daily for the period from February through November, we are able to assess: the total number of individuals of each species using each pond; [figures 1 & 2] seasonal and daily chronology at each pond, thereby allowing quantification of seasonal changes in community structure; [figure 3] productivity for each species, that is the number of larvae undergoing metamorphosis and therefore leaving the pond [figures 1 & 2]. These figures are only sample and preliminary data and should not be cited without the consent of the authors.

Figure 1. Amphibians at Pond 1. Amphibian Species Adult Juvenile Metamorph Totals Marbled Salamander 53 2 1475 1530 Wood Frog 295 104 207 606 American Toad 27 24 211 262 Red-backed Salamander 98 7 0 105 Green Frog 12 42 24 78 Spotted Salamander 24 0 2 26 Bullfrog 8 7 4 19 Spring Peeper 16 0 0 16 Pickerel Frog 5 1 5 11 Four-toed Salamander 2 0 0 2 Two-lined Salamander 1 0 0 1 Gray Tree Frog 0 0 0 0 Red-spotted Newt 0 0 0 0 TOTAL 541 187 1928 2656 Figure 1. Amphibians at Pond 2. Amphibian Species Adult Juvenile Metamorph Totals Green Frog 17 15 1745 1777 Wood Frog 815 6 8 829 Spring Peeper 258 0 4 262 Spotted Salamander 113 0 70 183 Marbled Salamander 118 0 44 162 Red-spotted Newt 45 1 66 112 American Toad 18 26 53 97 Bullfrog 41 31 0 72 Red-backed Salamander 35 9 0 44 Pickerel Frog 3 7 3 13 Gray Tree Frog 4 0 3 7 Four-toed Salamander 0 0 0 0 Two-lined Salamander 0 0 0 0 TOTAL 1467 95 1996 3558 Figure 3. Wood Frog Activity at Pond 2.