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Data from Bay Tree Beach 13 Sep 2001
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Abiotic Data |
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Bea, Mary Ellen, Tasha |
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Weather: Hot, no wind, sunny, low humidity |
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Temperatures C |
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Air |
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30 |
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Water |
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30 |
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Sediment |
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28 |
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Secchi disk (cm) |
50 |
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Salinity ppt |
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28 |
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Dissolved oxygen ppm |
5 |
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Tides: High |
5:33 AM |
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Low |
11:32 AM |
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Transect at Marsh w Phragmites |
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Distance (m) |
Heights (cm) |
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51 |
111 |
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48 |
91 |
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45 |
63 |
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42 |
57 |
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39 |
61 |
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36 |
40 |
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33 |
45 |
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30 |
64 |
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27 |
64 |
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24 |
51 |
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21 |
57 |
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18 |
35 |
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15 |
33 |
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12 |
39 |
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9 |
32 |
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6 |
30 |
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3 |
18 |
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0 |
0 |
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-3 |
-16 |
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-6 |
-28 |
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-9 |
-34 |
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-12 |
-34 |
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-15 |
-21 |
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-18 |
-8 |
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-21 |
-13 |
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-24 |
-18 |
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-27 |
-27 |
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-30 |
-36 |
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-33 |
-41 |
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-36 |
-47 |
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-39 |
-51 |
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-42 |
-49 |
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-45 |
-43 |
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Estimation of the population of Littorina
irrorata utilizing the
Lincoln/Peterson Capture/Recapture Method
N = M(n+1)/R+1
Where N is population size
M is original sample size
n is the second sample size
R is the recaptured snails
N = 249 (245 + 1) / (10 + 1) = 5,570 snails in the marsh next
to the beach area
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| Floristics
Sublittoral:
Ulva sp. - sea lettuce
Gracilius sp. - branched red algae
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| Fauna
nutrea (dead)
raccoon prints
deer feces
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Biomass: 0.5 m 2
Phragmites
australis |
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stem # |
length (cm) |
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1 |
127 |
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2 |
163 |
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3 |
171 |
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4 |
198 |
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5 |
206 |
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6 |
210 |
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7 |
213 |
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8 |
217 |
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9 |
230 |
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10 |
238 |
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11 |
288 |
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average |
205.5 |
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| Bay
Tree Beach, Seaford, VA |
Bay
Tree Beach Pictures 2001 |
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